Develop Reference

C# SqlDataReader gets closed

I have no clue why I get an exception. It says that the reader got closed before I try to access it. Why is that so?
Here is the code:
//Load Projects from SQL Server (nothing else)
public SPpowerPlantList loadProjectsFromServer(DateTime timestamp, string note, string sqlServer, string database)
{
SqlConnection sqlConnection = new SqlConnection(String.Format(#"Integrated Security=SSPI;server={0};Initial Catalog={1};", sqlServer, database));
sqlConnection.Open();
string selectstring = "SELECT * FROM [dbo].[tblSPpowerPlant]"; //(WHERE note {0} = " + note + " AND timestamp {1} = " + timestamp;
SqlCommand sqlSelectCommand = new SqlCommand(selectstring, sqlConnection);
sqlSelectCommand.CommandType = CommandType.Text;
sqlSelectCommand.CommandText = selectstring;
SqlDataReader reader;
SPpowerPlantList powerPlantList = new SPpowerPlantList();
reader = sqlSelectCommand.ExecuteReader();
//this line trowhs the exeption
while (reader.Read())
{
foreach (SPpowerPlant powerPlant in powerPlantList)
{
powerPlant.ID = reader.GetInt32(0);
powerPlant.projectName = reader.GetString(1).ToString();
powerPlant.location = reader.GetString(2);
powerPlant.shortName = reader.GetString(3);
powerPlant.numberOfWtgs = reader.GetInt32(4);
powerPlant.mwWtg = reader.GetDouble(5);
powerPlant.mwTotal = reader.GetDouble(6);
powerPlant.projectShareWeb = reader.GetDouble(7);
powerPlant.mwWeb = reader.GetDouble(8);
powerPlant.phase = reader.GetString(9);
powerPlant.phaseNumber = reader.GetString(10);
powerPlant.phaseDescription = reader.GetString(11);
powerPlant.projectProgress = reader.GetDouble(12);
powerPlant.mwDeveloped = reader.GetDouble(13);
powerPlant.projectManager = reader.GetString(14);
powerPlant.spaceUrl = reader.GetString(15);
powerPlant.country = reader.GetString(16);
powerPlant.technology = reader.GetString(17);
powerPlant.state = reader.GetString(18);
powerPlant.allPermits = reader.GetDateTime(19);
powerPlant.cod = reader.GetDateTime(20);
powerPlant.stateSince = reader.GetDateTime(21);
powerPlant.spID = reader.GetInt32(22);
powerPlant.currency = reader.GetString(23);
powerPlant.possibleWtgTypes = reader.GetString(24);
powerPlant.hubHeight = reader.GetString(25);
powerPlant.visibility = reader.GetString(26);
powerPlant.templateName = reader.GetString(27);
powerPlantList.Add(powerPlant);
}
reader.Dispose();
sqlConnection.Close();
}
return powerPlantList;
}
Here is the exception (google translate):
Invalid attempt to Read access because the data reader has been closed.
I tried it with google but had no luck. So any help would be great. Thanks for your time.
BTW Sorry for my english not my native language but I work on it.

the code lines
reader.Dispose();
sqlConnection.Close();
are inside the while(reader.read()) loop.
Also, you better use using instead of calling Dispose() yourself.
public SPpowerPlantList loadProjectsFromServer(DateTime timestamp, string note, string sqlServer, string database)
{
using(var sqlConnection = new SqlConnection(String.Format(#"Integrated Security=SSPI;server={0};Initial Catalog={1};", sqlServer, database)))
{
sqlConnection.Open();
var selectstring = "SELECT * FROM [dbo].[tblSPpowerPlant]"; //(WHERE note {0} = " + note + " AND timestamp {1} = " + timestamp;
var sqlSelectCommand = new SqlCommand(selectstring, sqlConnection);
sqlSelectCommand.CommandType = CommandType.Text;
sqlSelectCommand.CommandText = selectstring;
SPpowerPlantList powerPlantList = new SPpowerPlantList();
using(var reader = sqlSelectCommand.ExecuteReader())
{
while (reader.Read())
{
foreach (SPpowerPlant powerPlant in powerPlantList)
{
powerPlant.ID = reader.GetInt32(0);
powerPlant.projectName = reader.GetString(1).ToString();
powerPlant.location = reader.GetString(2);
powerPlant.shortName = reader.GetString(3);
powerPlant.numberOfWtgs = reader.GetInt32(4);
powerPlant.mwWtg = reader.GetDouble(5);
powerPlant.mwTotal = reader.GetDouble(6);
powerPlant.projectShareWeb = reader.GetDouble(7);
powerPlant.mwWeb = reader.GetDouble(8);
powerPlant.phase = reader.GetString(9);
powerPlant.phaseNumber = reader.GetString(10);
powerPlant.phaseDescription = reader.GetString(11);
powerPlant.projectProgress = reader.GetDouble(12);
powerPlant.mwDeveloped = reader.GetDouble(13);
powerPlant.projectManager = reader.GetString(14);
powerPlant.spaceUrl = reader.GetString(15);
powerPlant.country = reader.GetString(16);
powerPlant.technology = reader.GetString(17);
powerPlant.state = reader.GetString(18);
powerPlant.allPermits = reader.GetDateTime(19);
powerPlant.cod = reader.GetDateTime(20);
powerPlant.stateSince = reader.GetDateTime(21);
powerPlant.spID = reader.GetInt32(22);
powerPlant.currency = reader.GetString(23);
powerPlant.possibleWtgTypes = reader.GetString(24);
powerPlant.hubHeight = reader.GetString(25);
powerPlant.visibility = reader.GetString(26);
powerPlant.templateName = reader.GetString(27);
powerPlantList.Add(powerPlant);
}
}
}
}
return powerPlantList;
}

If you remove that foreach part you can see the problem.
You check if the reader is open
you iterate over the powerplant list, by the way this is reassigning each powerPlant to the same record in the reader
You close and dispose of the reader
Now you check if it is open again at the top of the while which throws the exception
I believe you want to create a new list of SPpowerPlant objects from your reader. You should change your code to the following which does that and releases the reader. Note that you should wrap all your Disposable objects in using statements like with the reader below.
using(var reader = sqlSelectCommand.ExecuteReader()) // closes and disposes reader once it is out of scope
{
while (reader.Read())
{
var powerPlant = new SPpowerPlant();
powerPlant.templateName = reader.GetString(27);
//// rest of calls to populate your item
SPpowerPlantList.Add(powerPlant);
}
}

asp.net A transport-level error has occurred when receiving results from the server

I am using ASP.Net C# with SQL Server 2012
My C# Code :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
public partial class autorefresh_create_emi : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["paconn"].ToString());
con.Open();
SqlCommand com1 = new SqlCommand("select max(f_casenum) from c_detail", con);
string check_max = com1.ExecuteScalar().ToString();
if (check_max == "0")
{
}
else
{
string st_id = "";
Int64 st = 0;
string max_id = "";
Int64 en = 0;
SqlCommand com2 = new SqlCommand("select top 1(f_casenum) from c_emi where f_casenum not in (select top 1 (f_casenum) from c_detail order by f_casenum) order by f_casenum", con);
com2.CommandTimeout = 0;
st_id = com2.ExecuteScalar().ToString();
st_id = st_id.Substring(2);
st = Convert.ToInt64(st_id);
max_id = check_max;
max_id = max_id.Substring(2);
en = Convert.ToInt64(max_id);
for (Int64 i = st; i <= en; i++)
{
string f_casenum = "PA" + i;
string c_status = "";
string f_tenure = "";
SqlCommand com3 = new SqlCommand("select * from c_detail where f_casenum=#f_casenum", con);
com3.CommandTimeout = 0;
com3.Parameters.AddWithValue("#f_casenum", f_casenum);
SqlDataReader reader3 = com3.ExecuteReader();
if (reader3.Read())
{
f_tenure = reader3["f_tenure"].ToString().Trim();
c_status = reader3["c_status"].ToString();
}
reader3.Close();
if (c_status == "Full Paid")
{
}
else
{
string row_check = "";
SqlCommand com4 = new SqlCommand("select count(f_invoice) from c_emi where f_casenum=#f_casenum", con);
com4.CommandTimeout = 0;
com4.Parameters.AddWithValue("#f_casenum", f_casenum);
row_check = com4.ExecuteScalar().ToString().Trim();
if (f_tenure.Equals(row_check))
{
}
else
{
string st_id_invoice = "";
Int64 st_invoice = 0;
string max_id_invoice = "";
Int64 en_invoice = 0;
SqlCommand com5 = new SqlCommand("select min(f_invoice) from c_emi where f_casenum=#f_casenum", con);
com5.CommandTimeout = 0;
com5.Parameters.AddWithValue("#f_casenum", f_casenum);
st_id_invoice = com5.ExecuteScalar().ToString();
st_id_invoice = st_id_invoice.Substring(3);
st_invoice = Convert.ToInt64(st_id_invoice);
SqlCommand com6 = new SqlCommand("select max(f_invoice) from c_emi where f_casenum=#f_casenum", con);
com6.CommandTimeout = 0;
com6.Parameters.AddWithValue("#f_casenum", f_casenum);
max_id_invoice = com6.ExecuteScalar().ToString();
max_id_invoice = max_id_invoice.Substring(3);
en_invoice = Convert.ToInt64(max_id_invoice);
for (Int64 j = st_invoice; j <= en_invoice; j++)
{
string invoice_date = "";
string f_emi_due = "";
string f_total_emi = "";
string f_emi = "";
string f_b_curr = "";
string f_invoice = "PAI" + j;
string f_casenum1 = "";
SqlCommand com7 = new SqlCommand("select * from c_emi where f_invoice=#f_invoice", con);
com7.CommandTimeout = 0;
com7.Parameters.AddWithValue("#f_invoice", f_invoice);
SqlDataReader reader7 = com7.ExecuteReader();
if (reader7.Read())
{
f_casenum1 = reader7["f_casenum"].ToString();
f_emi = reader7["f_emi"].ToString();
f_emi_due = reader7["f_emi_due"].ToString();
f_total_emi = reader7["f_total_emi"].ToString();
f_b_curr = reader7["f_b_curr"].ToString();
invoice_date = reader7["invoice_date"].ToString();
}
reader7.Close();
if (f_casenum == f_casenum1)
{
DateTime currr = DateTime.Now;
DateTime INDIAN_ZONE = TimeZoneInfo.ConvertTimeBySystemTimeZoneId(currr, "India Standard Time");
DateTime curr = INDIAN_ZONE;
string curr_invoicedate = curr.ToShortDateString();
DateTime check_invoicedate = Convert.ToDateTime(invoice_date);
check_invoicedate = check_invoicedate.AddDays(30);
check_invoicedate = Convert.ToDateTime(check_invoicedate);
string exit_date = check_invoicedate.ToShortDateString();
string f_emi_duedate = check_invoicedate.AddDays(10).ToShortDateString();
string invoice_date1 = check_invoicedate.ToShortDateString();
SqlCommand com8 = new SqlCommand("select f_casenum from c_emi where f_casenum=#f_casenum and CONVERT(date,invoice_date,101)=#invoice_date", con);
com8.CommandTimeout = 0;
com8.Parameters.AddWithValue("#f_casenum", f_casenum);
com8.Parameters.AddWithValue("#invoice_date", exit_date);
string check_exitdate = "";
SqlDataReader reader8 = com8.ExecuteReader();
if (reader8.Read())
{
check_exitdate = reader8["f_casenum"].ToString();
}
else
{
}
if (check_exitdate != "")
{
}
else
{
if (curr >= check_invoicedate)
{
string value = "0";
string owner = "";
string i_status = "Unlock";
SqlCommand com9 = new SqlCommand("select MAX(f_invoice) from c_emi", con);
com9.CommandTimeout = 0;
string maxid1 = com9.ExecuteScalar().ToString();
string id1 = maxid1;
Int64 code = 100000000001;
string c = "PAI";
if (id1.Substring(0, 1) != "P")
{
id1 = code.ToString();
id1 = c + id1.ToString();
}
else
{
id1 = id1.Substring(3);
Int64 a = Convert.ToInt64(id1);
a = a + 1;
id1 = c + a.ToString();
}
id1 = id1.ToString();
SqlCommand com11 = new SqlCommand("insert into c_emi values(#f_casenum,#f_b_amt,#f_emi,#f_emi_duedate,#f_invoice,#invoice_date,#f_overdue_amt,#f_emi_paid,#f_emi_due,#f_total_emi,#f_b_curr,#i_status,#owner,#convi_charges,#paidemi_date)", con);
com11.CommandTimeout = 0;
SqlParameter obj1 = new SqlParameter("#f_casenum", DbType.StringFixedLength);
obj1.Value = f_casenum;
com11.Parameters.Add(obj1);
SqlParameter obj2 = new SqlParameter("#f_overdue_amt", DbType.StringFixedLength);
obj2.Value = value;
com11.Parameters.Add(obj2);
SqlParameter obj3 = new SqlParameter("#f_emi_paid", DbType.StringFixedLength);
obj3.Value = value;
com11.Parameters.Add(obj3);
SqlParameter obj4 = new SqlParameter("#f_emi_due", DbType.StringFixedLength);
obj4.Value = value;
com11.Parameters.Add(obj4);
SqlParameter obj5 = new SqlParameter("#f_total_emi", DbType.StringFixedLength);
obj5.Value = f_emi;
com11.Parameters.Add(obj5);
SqlParameter obj6 = new SqlParameter("#f_emi", DbType.StringFixedLength);
obj6.Value = f_emi;
com11.Parameters.Add(obj6);
SqlParameter obj7 = new SqlParameter("#f_emi_duedate", DbType.StringFixedLength);
obj7.Value = f_emi_duedate;
com11.Parameters.Add(obj7);
SqlParameter obj8 = new SqlParameter("#f_invoice", DbType.StringFixedLength);
obj8.Value = id1;
com11.Parameters.Add(obj8);
SqlParameter obj9 = new SqlParameter("#invoice_date", DbType.StringFixedLength);
obj9.Value = invoice_date1;
com11.Parameters.Add(obj9);
SqlParameter obj10 = new SqlParameter("#f_b_amt", DbType.StringFixedLength);
obj10.Value = f_b_curr;
com11.Parameters.Add(obj10);
SqlParameter obj11 = new SqlParameter("#f_b_curr", DbType.StringFixedLength);
obj11.Value = f_b_curr;
com11.Parameters.Add(obj11);
SqlParameter obj12 = new SqlParameter("#i_status", DbType.StringFixedLength);
obj12.Value = i_status;
com11.Parameters.Add(obj12);
SqlParameter obj13 = new SqlParameter("#owner", DbType.StringFixedLength);
obj13.Value = owner;
com11.Parameters.Add(obj13);
SqlParameter obj14 = new SqlParameter("#convi_charges", DbType.StringFixedLength);
obj14.Value = value;
com11.Parameters.Add(obj14);
SqlParameter obj15 = new SqlParameter("#paidemi_date", DbType.StringFixedLength);
obj15.Value = owner;
com11.Parameters.Add(obj15);
com11.ExecuteNonQuery();
}
else
{
}
}
}
else
{
}
}
}
}
}
}
con.Close();
}
}
I have large database and my query is inserted many number of record on table when i run the web page
I recieve the following Error :
System.Data.SqlClient.SqlException: A transport-level error has
occurred when receiving results from the server. (provider: Session
Provider, error: 19 - Physical connection is not usable)
on the following Code
Line 111: com7.Parameters.AddWithValue("#f_invoice", f_invoice);
Line 112:
Line 113: SqlDataReader reader7 = com7.ExecuteReader();
Line 114: if (reader7.Read())
Line 115: {
My ErrorLog file says :
2015-01-13 11:27:23.96 Logon Error: 18456, Severity: 14, State:
8.
2015-01-13 11:27:23.96 Logon Login failed for user 'sa'.
Reason: Password did not match that for the login provided. [CLIENT:
108.171.243.19]
So what's the issue..??

Calculating columns in a listview

I am new to programming and I have a price list in a list view, I would like to have another column that calculates the last column and a textbox together, please point me in the right direction as I am getting method and format errors.. here is my code:
listView1.Items.Clear();
OleDbConnection connection = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:xxxx;Persist Security Info=False");
OleDbCommand command = connection.CreateCommand();
if (comboBox1.Text == "Brickcom")
{
ListViewItem li;
command.CommandText = "SELECT [PartNo], [Category], [Product], [Resolution], [IncludedAccessories], [Price] FROM [Brickcom] WHERE ([Manufacturer] Like '" + comboBox1.Text.ToString() + "')";
connection.Open();
OleDbDataReader reader = command.ExecuteReader(CommandBehavior.Default);
while (reader.Read())
{
listView1.Columns[0].Text = null;
listView1.Columns[1].Text = null;
listView1.Columns[2].Text = null;
listView1.Columns[3].Text = null;
listView1.Columns[4].Text = null;
listView1.Columns[5].Text = null;
listView1.Columns[6].Text = null;
listView1.Columns[7].Text = null;
listView1.Columns[8].Text = null;
listView1.Columns[0].Text = "Part Number";
listView1.Columns[1].Text = "Category";
listView1.Columns[2].Text = "Product";
listView1.Columns[3].Text = "Resolution";
listView1.Columns[4].Text = "Included Accessories";
listView1.Columns[5].Text = "Price";
li = listView1.Items.Add(reader[0].ToString());
li.SubItems.Add(reader[1].ToString());
li.SubItems.Add(reader[2].ToString());
li.SubItems.Add(reader[3].ToString());
li.SubItems.Add(reader[4].ToString());
li.SubItems.Add(reader[5].ToString());
foreach (ListViewItem item in listView1.Items)
{
li.SubItems.Add(items[6].ToString());
//listView1.Columns[6].Text = (Int32.Parse(textBox1.Text) * Int32.Parse(textBox2.Text)).ToString();
item.SubItems[6].Text = (Int32.Parse(textBox1.Text) * Int32.Parse(textBox2.Text)).ToString();
}
}
connection.Close();
}

Trouble updating my datagrid in WPF

As the title indicates, I'm having trouble updating a datagrid in WPF. Basically what I'm trying to accomplish is a datagrid, that is connected to a SQL Server database, that updates automatically once a user enters information into a few textboxes and clicks a submit button. You'll notice that I have a command that joins two tables. The data from the Quote_Data table will be inserted by a different user at a later time. For now my only concern is getting the information from the textboxes and into the General_Info table, and from there into my datagrid. The code, which I'll include below compiles fine, but when I hit the submit button, nothing happens. This is the first application I've ever built working with a SQL Database so many of these concepts are new to me, which is why you'll probably look at my code and wonder what is he thinking.
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
public DataSet mds; // main data set (mds)
private void Window_Loaded_1(object sender, RoutedEventArgs e)
{
try
{
string connectionString = Sqtm.Properties.Settings.Default.SqtmDbConnectionString;
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
//Merging tables General_Info and Quote_Data
SqlCommand cmd = new SqlCommand("SELECT General_Info.Quote_ID, General_Info.Open_Quote, General_Info.Customer_Name,"
+ "General_Info.OEM_Name, General_Info.Qty, General_Info.Quote_Num, General_Info.Fab_Drawing_Num, "
+ "General_Info.Rfq_Num, General_Info.Rev_Num, Quote_Data.MOA, Quote_Data.MOQ, "
+ "Quote_Data.Markup, Quote_Data.FOB, Quote_Data.Shipping_Method, Quote_Data.Freight, "
+ "Quote_Data.Vendor_Price, Unit_Price, Quote_Data.Difference, Quote_Data.Vendor_NRE_ET, "
+ "Quote_Data.NRE, Quote_Data.ET, Quote_Data.STI_NET, Quote_Data.Mfg_Time, Quote_Data.Delivery_Time, "
+ "Quote_Data.Mfg_Name, Quote_Data.Mfg_Location "
+ "FROM General_Info INNER JOIN dbo.Quote_Data ON General_Info.Quote_ID = Quote_Data.Quote_ID",
connection);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
MainGrid.ItemsSource = dt.DefaultView;
mds = new DataSet();
da.Fill(mds, "General_Info");
MainGrid.DataContext = mds.Tables["General_Info"];
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
// renaming column names from the database so they are easier to read in the datagrid
MainGrid.Columns[0].Header = "#";
MainGrid.Columns[1].Header = "Date";
MainGrid.Columns[2].Header = "Customer";
MainGrid.Columns[3].Header = "OEM";
MainGrid.Columns[4].Header = "Qty";
MainGrid.Columns[5].Header = "Quote Number";
MainGrid.Columns[6].Header = "Fab Drawing Num";
MainGrid.Columns[7].Header = "RFQ Number";
MainGrid.Columns[8].Header = "Rev Number";
MainGrid.Columns[9].Header = "MOA";
MainGrid.Columns[10].Header = "MOQ";
MainGrid.Columns[11].Header = "Markup";
MainGrid.Columns[12].Header = "FOB";
MainGrid.Columns[13].Header = "Shipping";
MainGrid.Columns[14].Header = "Freight";
MainGrid.Columns[15].Header = "Vendor Price";
MainGrid.Columns[16].Header = "Unit Price";
MainGrid.Columns[17].Header = "Difference";
MainGrid.Columns[18].Header = "Vendor NRE/ET";
MainGrid.Columns[19].Header = "NRE";
MainGrid.Columns[20].Header = "ET";
MainGrid.Columns[21].Header = "STINET";
MainGrid.Columns[22].Header = "Mfg. Time";
MainGrid.Columns[23].Header = "Delivery Time";
MainGrid.Columns[24].Header = "Manufacturer";
MainGrid.Columns[25].Header = "Mfg. Location";
}
private void submitQuotebtn_Click(object sender, RoutedEventArgs e)
{
CustomerData newQuote = new CustomerData();
int quantity;
quantity = Convert.ToInt32(quantityTxt.Text);
string theDate = System.DateTime.Today.Date.ToString("d");
newQuote.OpenQuote = theDate;
newQuote.CustomerName = customerNameTxt.Text;
newQuote.OEMName = oemNameTxt.Text;
newQuote.Qty = quantity;
newQuote.QuoteNumber = quoteNumberTxt.Text;
newQuote.FdNumber = fabDrawingNumberTxt.Text;
newQuote.RfqNumber = rfqNumberTxt.Text;
newQuote.RevNumber = revNumberTxt.Text;
try
{
string insertConString = Sqtm.Properties.Settings.Default.SqtmDbConnectionString;
using (SqlConnection insertConnection = new SqlConnection(insertConString))
{
insertConnection.Open();
SqlDataAdapter adapter = new SqlDataAdapter(Sqtm.Properties.Settings.Default.SqtmDbConnectionString, insertConnection);
SqlCommand updateCmd = new SqlCommand("UPDATE General_Info " + "Quote_ID = #Quote_ID, "
+ "Open_Quote = #Open_Quote, " + "OEM_Name = #OEM_Name, " + "Qty = #Qty, "
+ "Quote_Num = #Quote_Num, " + "Fab_Drawing_Num = #Fab_Drawing_Num, "
+ "Rfq_Num = #Rfq_Num, " + "Rev_Num = #Rev_Num "
+ "WHERE Quote_ID = #Quote_ID");
updateCmd.Connection = insertConnection;
System.Data.SqlClient.SqlParameterCollection param = updateCmd.Parameters;
//
// Add new SqlParameters to the command.
//
param.AddWithValue("Open_Quote", newQuote.OpenQuote);
param.AddWithValue("Customer_Name", newQuote.CustomerName);
param.AddWithValue("OEM_Name", newQuote.OEMName);
param.AddWithValue("Qty", newQuote.Qty);
param.AddWithValue("Quote_Num", newQuote.QuoteNumber);
param.AddWithValue("Fab_Drawing_Num", newQuote.FdNumber);
param.AddWithValue("Rfq_Num", newQuote.RfqNumber);
param.AddWithValue("Rev_Num", newQuote.RevNumber);
adapter.UpdateCommand = updateCmd;
adapter.Update(mds.Tables[0]);
mds.AcceptChanges();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
Thanks in advance to anyone who can help, I really appreciate it,
Andrew

You are not setting the Quote_ID parameter. So your update it likely running WHERE Quote_ID = null so nothing updates.

using LINQ I was able to resolve the issue. Here's the code:
var sqtmDC = new SqtmLinqDataContext();
var mainTable = from generalInfo in sqtmDC.GetTable<General_Info>()
//join quoteData in sqtmDataContext.GetTable<Quote_Data>() on generalInfo.Quote_ID equals quoteData.Quote_ID
select generalInfo;
myGrid.ItemsSource = mainTable;
}
private void submitBtn_Click(object sender, RoutedEventArgs e)
{
var sqtmDC = new SqtmLinqDataContext();
// string theDate = System.DateTime.Today.Date.ToString("d");
int quantity = Convert.ToInt32(quantityTxt.Text);
General_Info insert = new General_Info();
insert.Open_Quote = DateTime.UtcNow;
insert.Customer_Name = customerNameTxt.Text;
insert.OEM_Name = oemNameTxt.Text;
insert.Qty = quantity;
insert.Quote_Num = quoteNumberTxt.Text;
insert.Fab_Drawing_Num = fabDrawingNumTxt.Text;
insert.Rfq_Num = rfqNumberTxt.Text;
insert.Rev_Num = revNumberTxt.Text;
sqtmDC.General_Infos.InsertOnSubmit(insert);
sqtmDC.SubmitChanges();
int quoteID = insert.Quote_ID;
var mainTable = from generalInfo in sqtmDC.GetTable<General_Info>()
select generalInfo;
myGrid.ItemsSource = mainTable;

Are you trying to update an existing row or insert a new row?
Cause if you need to insert then the proper command is insert (not update).
To get the Identity value of the inserted row you use Scope_Identity().
And you can only insert into one table at a time.
Scope_Identity() is NOT a param
Do not try and use it as a param
See example below
INSERT INTO Sales.Customer ([TerritoryID],[PersonID]) VALUES (8,NULL);
GO
SELECT SCOPE_IDENTITY() AS [SCOPE_IDENTITY];
There are lots of examples on MSDN.Microsoft.com

How to store results returned from SqlDataReader?

I'm a rookie, as evinced by my question, and I'm using a datareader to find the rows associated with a certain subId value. I used a while(dr.read) loop and nested a switch case statement with other readers in each case (code below), but I threw the exception "already an open data reader associated with this command which must be closed first." Is there a way to store the results of the first datareader (the relevant rows where subId = x) in an array, or list, and then close that reader before I enter my switch statement? (I understand what an array is to the extent that I imagine it would work, but I haven't a clue what the syntax would look like).
string viewQuery = "SELECT ProductId FROM SubmissionProducts WHERE SubmissionId =" + x;
using (SqlCommand viewcmd = new SqlCommand(viewQuery, editConn))
{
SqlDataReader dr = viewcmd.ExecuteReader();
while (dr.Read())
{
switch(dr.GetInt32(0))
{
case 1:
PanelEplShow.Visible = true;
using (SqlCommand eplviewcmd = new SqlCommand(epl, editConn))
{
SqlDataReader epldr = eplviewcmd.ExecuteReader();
epldr.Read();
LblEplShowEntity.Text = epldr.GetString(0);
LblEplShowTotalEmpl.Text = epldr.GetInt32(1).ToString();
LblEplShowCalEmpl.Text = epldr.GetInt32(2).ToString();
LblEplShowMichEmpl.Text = epldr.GetInt32(3).ToString();
LblEplShowNyEmpl.Text = epldr.GetInt32(4).ToString();
LblEplShowNjEmpl.Text = epldr.GetInt32(5).ToString();
LblEplShowPrimEx.Text = epldr.GetInt32(6).ToString();
LblEplShowLim.Text = epldr.GetInt32(7).ToString();
LblEplShowPrem.Text = epldr.GetInt32(8).ToString();
LblEplShowWage.Text = epldr.GetInt32(9).ToString();
LblEplShowInvestCost.Text = epldr.GetInt32(10).ToString();
epldr.Close();
}
break;
case 2:
PanelProfShow.Visible = true;
using (SqlCommand profcmd1 = new SqlCommand(prof, editConn))
{
SqlDataReader profdr = profcmd1.ExecuteReader();
profdr.Read();
LblProfShowPrimEx.Text = profdr.GetInt32(0).ToString();
LblProfShowType.Text = profdr.GetInt32(1).ToString();
LblProfShowLim.Text = profdr.GetInt32(2).ToString();
LblProfShowRetention.Text = profdr.GetInt32(3).ToString();
LblProfShowAtt.Text = profdr.GetInt32(4).ToString();
LblProfShowPrem.Text = profdr.GetInt32(5).ToString();
LblProfShowSublim.Text = profdr.GetInt32(5).ToString();
LblProfShowEntity.Text = profdr.GetInt32(6).ToString();
profdr.Close();
}
break;
case 3:
PanelCrimeShow.Visible = true;
using (SqlCommand crimcmd = new SqlCommand(crim, editConn))
{
SqlDataReader crimdr = crimcmd.ExecuteReader();
crimdr.Read();
LblCrimeShowEntity.Text = crimdr.GetString(0);
LblCrimeShowEmpl.Text = crimdr.GetInt32(1).ToString();
LblCrimeShowPrimEx.Text = crimdr.GetInt32(2).ToString();
LblCrimeShowLimA.Text = crimdr.GetInt32(3).ToString();
LblCrimeShowDedA.Text = crimdr.GetInt32(4).ToString();
LblCrimeShowPremA.Text = crimdr.GetInt32(5).ToString();
LblCrimeShowLimB.Text = crimdr.GetInt32(6).ToString();
LblCrimeShowDedB.Text = crimdr.GetInt32(7).ToString();
LblCrimeShowPremB.Text = crimdr.GetInt32(8).ToString();
crimdr.Close();
}
break;
case 4:
PanelFidShow.Visible = true;
using (SqlCommand fidcmd = new SqlCommand(fid, editConn))
{
SqlDataReader fiddr = fidcmd.ExecuteReader();
fiddr.Read();
LblFidShowEntity.Text = fiddr.GetString(0);
LblFidShowPrimEx.Text = fiddr.GetInt32(1).ToString();
LblFidShowLim.Text = fiddr.GetInt32(2).ToString();
LblFidShowSir.Text = fiddr.GetInt32(3).ToString();
LblFidShowAtt.Text = fiddr.GetInt32(4).ToString();
LblFidShowPrem.Text = fiddr.GetInt32(5).ToString();
LblFidShowSublim.Text = fiddr.GetInt32(6).ToString();
fiddr.Close();
}
break;
case 5:
PanelNotShow.Visible = true;
using (SqlCommand notcmd = new SqlCommand(not, editConn))
{
SqlDataReader notdr = notcmd.ExecuteReader();
notdr.Read();
LblNotShowPrimEx.Text = notdr.GetInt32(0).ToString();
LblNotShowCov.Text = notdr.GetInt32(1).ToString();
LblNotShowSharedLim.Text = notdr.GetInt32(2).ToString();
LblNotShowTradLim.Text = notdr.GetInt32(3).ToString();
LblNotShowTradSir.Text = notdr.GetInt32(4).ToString();
LblNotShowEplLim.Text = notdr.GetInt32(5).ToString();
LblNotShowEplSir.Text = notdr.GetInt32(6).ToString();
LblNotShowEplPrem.Text = notdr.GetInt32(7).ToString();
LblNotShowSublim.Text = notdr.GetInt32(8).ToString();
notdr.Close();
}
break;
case 6:
PanelPrivShow.Visible = true;
using (SqlCommand privcmd = new SqlCommand(priv, editConn))
{
SqlDataReader privdr = privcmd.ExecuteReader();
privdr.Read();
LblPrivShowPrimEx.Text = privdr.GetInt32(0).ToString();
LblPrivShowSharedLim.Text = privdr.GetInt32(1).ToString();
LblPrivShowTradLim.Text = privdr.GetInt32(2).ToString();
LblPrivShowTradAtt.Text = privdr.GetInt32(3).ToString();
LblPrivShowTradSir.Text = privdr.GetInt32(4).ToString();
LblPrivShowTradPrem.Text = privdr.GetInt32(5).ToString();
LblPrivShowEplLim.Text = privdr.GetInt32(6).ToString();
LblPrivShowEplSir.Text = privdr.GetInt32(7).ToString();
LblPrivShowEplAtt.Text = privdr.GetInt32(8).ToString();
LblPrivShowEplPrem.Text = privdr.GetInt32(9).ToString();
LblPrivShowEplWage.Text = privdr.GetInt32(10).ToString();
LblPrivShowEplSublim.Text = privdr.GetInt32(11).ToString();
LblPrivShowFidLim.Text = privdr.GetInt32(12).ToString();
LblPrivShowFidSir.Text = privdr.GetInt32(13).ToString();
LblPrivShowFidAtt.Text = privdr.GetInt32(14).ToString();
LblPrivShowFidPrem.Text = privdr.GetInt32(15).ToString();
LblPrivShowFidSublim.Text = privdr.GetInt32(16).ToString();
privdr.Close();
}
break;
case 7:
PanelPubShow.Visible = true;
using (SqlCommand pubcmd = new SqlCommand(pub, editConn))
{
SqlDataReader pubdr = pubcmd.ExecuteReader();
pubdr.Read();
LblPubShowMark.Text = pubdr.GetInt32(0).ToString();
LblPubShowTick.Text = pubdr.GetInt32(1).ToString();
LblPubShowTrad.Text = pubdr.GetInt32(2).ToString();
LblPubShowDic.Text = pubdr.GetInt32(3).ToString();
LblPubShowLim.Text = pubdr.GetInt32(4).ToString();
LblPubShowSecSir.Text = pubdr.GetInt32(5).ToString();
LblPubShowAllSir.Text = pubdr.GetInt32(6).ToString();
LblPubShowPrem.Text = pubdr.GetInt32(7).ToString();
LblPubShowPrimEx.Text = pubdr.GetInt32(8).ToString();
LblPubShowAtt.Text = pubdr.GetInt32(9).ToString();
LblPubShowSublim.Text = pubdr.GetInt32(10).ToString();
pubdr.Close();
}
break;
default:
break;
}
}
dr.Close();`

Load it into a DataTable.
SqlDataReader pubdr = pubcmd.ExecuteReader();
DataTable dt = new DataTable();
dt.Load(pubdr);
To expand on the comments:
foreach (DataRow dr in dt.Rows)
{
LblEplShowEntity.Text = dr["FIELDNAME"].ToString();
//...
}

Load a DataTable instead, which internally is a persisted DataReader anyway
For a DataReader you consume, use, discard. This is the nature of DataReaders. If you want the data to hang around, you'd use a DataTable. Simple, but a good rule of thumb.

Assuming SubmissionId is unique in the table SubmissionProducts , you don't need to use a data reader for the query. You can instead use the ExecuteScalar method of the command object.
If you want to get an array of all the collumn values in the current row from a DataReader you can use the GetValues method like this:
SqlDataReader reader; // assumming the data reader is already opened
object[] columns = new object[reader.FieldCount];
reader.GetValues(columns);// columns now contains all the values from the curent row

I found I had to adjust something in my connection string. I don't know if it's a .Net glitch or whether it's just a necessary adjustment when using nested readers, but I had to add MultipleActiveResultSets="true" to my stored connection string. Afterwards, everything worked properly, with no need for a datatable. Many thanks to everyone who answered. While I'm sure the answers above could also have worked, in case this question is of any utility to someone in the future, I'm posting the full code to show what worked for me. Word of caution: if you're new enough to coding to need this post, PARAMETERIZE your queries. This site was a training project where I was instructed to avoid parameterizing in the interest of learning other things first, but it's paramount. Bobby tables ftw.
Here's the code.
using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class View : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string x = Request.QueryString["SubmissionId"];
string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString;
string editCustQuery = "SELECT CustName, SicNaic, CustCity, CustAdd, CustState, CustZip FROM Customer WHERE SubId =" + x;
string editBroQuery = "SELECT BroName, BroAdd, BroCity, BroState, BroZip, EntityType FROM Broker WHERE SubId =" + x;
string editSubQuery = "SELECT Coverage, CurrentCoverage, PrimEx, Retention, EffectiveDate, Commission, Premium, Comments FROM Submission WHERE SubmissionId =" + x;
string epl = "SELECT Entity, Employees, CA, MI, NY, NJ, Primex, EplLim, EplSir, Premium, Wage, Sublim FROM EPL WHERE SubmissionId =" + x;
string prof = "SELECT Primex, EO, Limit, Retention, Att, Prem, Sublim, Entity FROM ProfessionalEO WHERE SubmissionId =" + x;
string crim = "SELECT Entity, Employees, PrimEx, LimA, DedA, PremA, LimitB, DedB, PremB FROM CrimeFidelity WHERE SubmissionId =" + x;
string fid = "SELECT Entity, PrimEx, Limit, SIR, Att, Premium, Sublim FROM Fiduciary WHERE SubmissionId =" + x;
string not = "SELECT PrimEx, Coverage, SharedSepLim, TradLim, TradDoSir, EplLim, EplSir, EplPrem, EplSublim FROM NotProfit WHERE SubmissionId =" + x;
string priv = "SELECT Primex, SharedSepLim, TradLim, TradAtt, TradDoSir, TradPrem, EplLim, EplSir, EplAtt, EplWage, EplPrem, EplInvest, FidLim, FidSir, FidAtt, FidPrem, FidSublim FROM PrivateCompany WHERE SubmissionId =" + x;
string pub = "SELECT Market, Ticker, TradABC, DIC, Limit, SecuritiesSir, OtherSir, Premium, PrimEx, Att, Sublim FROM PublicDO WHERE SubmissionId =" + x;
using (SqlConnection editConn = new SqlConnection(connectionString))
{
editConn.Open();
using (SqlCommand CustCommand = new SqlCommand(editCustQuery, editConn))
{
SqlDataReader dr = CustCommand.ExecuteReader();
dr.Read();
LblCustName.Text = dr.GetString(0);
LblSicNaic.Text = dr.GetString(1);
LblCustCity.Text = dr.GetString(2);
LblCustAddress.Text = dr.GetString(3);
LblCustState.Text = dr.GetString(4);
LblCustZip.Text = dr.GetInt32(5).ToString();
dr.Close();
}
using (SqlCommand BroCommand = new SqlCommand(editBroQuery, editConn))
{
SqlDataReader dr = BroCommand.ExecuteReader();
dr.Read();
LblBroName.Text = dr.GetString(0);
LblBroAddress.Text = dr.GetString(1);
LblBroCity.Text = dr.GetString(2);
LblBroState.Text = dr.GetString(3);
LblBroZip.Text = dr.GetInt32(4).ToString();
LblEntity.Text = dr.GetString(5);
dr.Close();
}
using (SqlCommand SubCommand = new SqlCommand(editSubQuery, editConn))
{
SqlDataReader dr = SubCommand.ExecuteReader();
dr.Read();
LblCoverage.Text = dr.GetInt32(0).ToString();
LblCurrentCoverage.Text = dr.GetInt32(1).ToString();
LblPrimEx.Text = dr.GetInt32(2).ToString();
LblRetention.Text = dr.GetInt32(3).ToString();
LblEffectDate.Text = dr.GetDateTime(4).ToString();
LblCommission.Text = dr.GetInt32(5).ToString();
LblPremium.Text = dr.GetInt32(6).ToString();
LblComments.Text = dr.GetString(7);
dr.Close();
HyperLink1.NavigateUrl = "~/ViewEdit.aspx?SubmissionId=" + x;
}
string viewQuery = "SELECT ProductId FROM SubmissionProducts WHERE SubmissionId =" + x;
SqlCommand viewcmd = new SqlCommand(viewQuery, editConn);
SqlDataReader drRows = viewcmd.ExecuteReader();
while (drRows.Read())
{
switch (drRows.GetInt32(0))
{
case 1:
PanelEplShow.Visible = true;
using (SqlCommand eplviewcmd = new SqlCommand(epl, editConn))
{
SqlDataReader epldr = eplviewcmd.ExecuteReader();
epldr.Read();
LblEplShowEntity.Text = epldr.GetString(0);
LblEplShowTotalEmpl.Text = epldr.GetInt32(1).ToString();
LblEplShowCalEmpl.Text = epldr.GetInt32(2).ToString();
LblEplShowMichEmpl.Text = epldr.GetInt32(3).ToString();
LblEplShowNyEmpl.Text = epldr.GetInt32(4).ToString();
LblEplShowNjEmpl.Text = epldr.GetInt32(5).ToString();
LblEplShowPrimEx.Text = epldr.GetInt32(6).ToString();
LblEplShowLim.Text = epldr.GetInt32(7).ToString();
LblEplShowSir.Text = epldr.GetInt32(8).ToString();
LblEplShowPrem.Text = epldr.GetInt32(9).ToString();
LblEplShowWage.Text = epldr.GetInt32(10).ToString();
LblEplShowInvestCost.Text = epldr.GetInt32(11).ToString();
epldr.Close();
}
break;
case 2:
PanelProfShow.Visible = true;
using (SqlCommand profcmd = new SqlCommand(prof, editConn))
{
SqlDataReader profdr = profcmd.ExecuteReader();
profdr.Read();
LblProfShowPrimEx.Text = profdr.GetInt32(0).ToString();
LblProfShowType.Text = profdr.GetString(1);
LblProfShowLim.Text = profdr.GetInt32(2).ToString();
LblProfShowRetention.Text = profdr.GetInt32(3).ToString();
LblProfShowAtt.Text = profdr.GetInt32(4).ToString();
LblProfShowPrem.Text = profdr.GetInt32(5).ToString();
LblProfShowSublim.Text = profdr.GetInt32(6).ToString();
LblProfShowEntity.Text = profdr.GetString(7);
profdr.Close();
}
break;
case 3:
PanelCrimeShow.Visible = true;
using (SqlCommand crimcmd = new SqlCommand(crim, editConn))
{
SqlDataReader crimdr = crimcmd.ExecuteReader();
crimdr.Read();
LblCrimeShowEntity.Text = crimdr.GetString(0);
LblCrimeShowEmpl.Text = crimdr.GetInt32(1).ToString();
LblCrimeShowPrimEx.Text = crimdr.GetInt32(2).ToString();
LblCrimeShowLimA.Text = crimdr.GetInt32(3).ToString();
LblCrimeShowDedA.Text = crimdr.GetInt32(4).ToString();
LblCrimeShowPremA.Text = crimdr.GetInt32(5).ToString();
LblCrimeShowLimB.Text = crimdr.GetInt32(6).ToString();
LblCrimeShowDedB.Text = crimdr.GetInt32(7).ToString();
LblCrimeShowPremB.Text = crimdr.GetInt32(8).ToString();
crimdr.Close();
}
break;
case 4:
PanelFidShow.Visible = true;
using (SqlCommand fidcmd = new SqlCommand(fid, editConn))
{
SqlDataReader fiddr = fidcmd.ExecuteReader();
fiddr.Read();
LblFidShowEntity.Text = fiddr.GetString(0);
LblFidShowPrimEx.Text = fiddr.GetInt32(1).ToString();
LblFidShowLim.Text = fiddr.GetInt32(2).ToString();
LblFidShowSir.Text = fiddr.GetInt32(3).ToString();
LblFidShowAtt.Text = fiddr.GetInt32(4).ToString();
LblFidShowPrem.Text = fiddr.GetInt32(5).ToString();
LblFidShowSublim.Text = fiddr.GetInt32(6).ToString();
fiddr.Close();
}
break;
case 5:
PanelNotShow.Visible = true;
using (SqlCommand notcmd = new SqlCommand(not, editConn))
{
SqlDataReader notdr = notcmd.ExecuteReader();
notdr.Read();
LblNotShowPrimEx.Text = notdr.GetInt32(0).ToString();
LblNotShowCov.Text = notdr.GetInt32(1).ToString();
LblNotShowSharedLim.Text = notdr.GetInt32(2).ToString();
LblNotShowTradLim.Text = notdr.GetInt32(3).ToString();
LblNotShowTradSir.Text = notdr.GetInt32(4).ToString();
LblNotShowEplLim.Text = notdr.GetInt32(5).ToString();
LblNotShowEplSir.Text = notdr.GetInt32(6).ToString();
LblNotShowEplPrem.Text = notdr.GetInt32(7).ToString();
LblNotShowSublim.Text = notdr.GetInt32(8).ToString();
notdr.Close();
}
break;
case 6:
PanelPrivShow.Visible = true;
using (SqlCommand privcmd = new SqlCommand(priv, editConn))
{
SqlDataReader privdr = privcmd.ExecuteReader();
privdr.Read();
LblPrivShowPrimEx.Text = privdr.GetInt32(0).ToString();
LblPrivShowSharedLim.Text = privdr.GetInt32(1).ToString();
LblPrivShowTradLim.Text = privdr.GetInt32(2).ToString();
LblPrivShowTradAtt.Text = privdr.GetInt32(3).ToString();
LblPrivShowTradSir.Text = privdr.GetInt32(4).ToString();
LblPrivShowTradPrem.Text = privdr.GetInt32(5).ToString();
LblPrivShowEplLim.Text = privdr.GetInt32(6).ToString();
LblPrivShowEplSir.Text = privdr.GetInt32(7).ToString();
LblPrivShowEplAtt.Text = privdr.GetInt32(8).ToString();
LblPrivShowEplPrem.Text = privdr.GetInt32(9).ToString();
LblPrivShowEplWage.Text = privdr.GetInt32(10).ToString();
LblPrivShowEplSublim.Text = privdr.GetInt32(11).ToString();
LblPrivShowFidLim.Text = privdr.GetInt32(12).ToString();
LblPrivShowFidSir.Text = privdr.GetInt32(13).ToString();
LblPrivShowFidAtt.Text = privdr.GetInt32(14).ToString();
LblPrivShowFidPrem.Text = privdr.GetInt32(15).ToString();
LblPrivShowFidSublim.Text = privdr.GetInt32(16).ToString();
privdr.Close();
}
break;
case 7:
PanelPubShow.Visible = true;
using (SqlCommand pubcmd = new SqlCommand(pub, editConn))
{
SqlDataReader pubdr = pubcmd.ExecuteReader();
pubdr.Read();
LblPubShowMark.Text = pubdr.GetInt32(0).ToString();
LblPubShowTick.Text = pubdr.GetInt32(1).ToString();
LblPubShowTrad.Text = pubdr.GetInt32(2).ToString();
LblPubShowDic.Text = pubdr.GetString(3);
LblPubShowLim.Text = pubdr.GetInt32(4).ToString();
LblPubShowSecSir.Text = pubdr.GetInt32(5).ToString();
LblPubShowAllSir.Text = pubdr.GetInt32(6).ToString();
LblPubShowPrem.Text = pubdr.GetInt32(7).ToString();
LblPubShowPrimEx.Text = pubdr.GetInt32(8).ToString();
LblPubShowAtt.Text = pubdr.GetInt32(9).ToString();
LblPubShowSublim.Text = pubdr.GetInt32(10).ToString();
pubdr.Close();
}
break;
default:
break;
}
}
drRows.Close();
}
}
}