Develop Reference

How do i update picture using sqlconnection

it always show an error Incorrect syntax near ')'.
I didnt see any wrong inputs
See my code below
byte[] content = ImageToStream(fName);
cnn.Open();
string sql = "update tblbarangayofficials set pic=#pic,fname=#fname,mname=#mname,lname=#lname,position=#position,startterm=#startterm,endterm=#endterm where id=#id)";
SqlCommand cmd1 = new SqlCommand(sql, cnn);
cmd1.Parameters.AddWithValue("#pic", SqlDbType.Image).Value = content;
cmd1.Parameters.AddWithValue("#fname", SqlDbType.VarChar).Value = txtfirstname.Text;
cmd1.Parameters.AddWithValue("#mname", SqlDbType.VarChar).Value = textBox1.Text;
cmd1.Parameters.AddWithValue("#lname", SqlDbType.VarChar).Value = txtlastname.Text;
cmd1.Parameters.AddWithValue("#position", SqlDbType.VarChar).Value = comboBox2.Text;
cmd1.Parameters.AddWithValue("#startterm", SqlDbType.DateTime).Value = dateTimePicker2.Value.Date;
cmd1.Parameters.AddWithValue("#endterm", SqlDbType.DateTime).Value = dateTimePicker1.Value.Date;
cmd1.Parameters.AddWithValue("#id", SqlDbType.Int).Value = int.Parse(ID.Text);
cmd1.ExecuteNonQuery();
cnn.Close();
MessageBox.Show("successfully updated");
dataGridView1.DataSource = db.sp_viewofficials();
it should save to sql server my save works

Your update statement has extra ending bracket which is not needed.
"update tblbarangayofficials set pic=#pic,fname=#fname,mname=#mname,lname=#lname,position=#position,startterm=#startterm,endterm=#endterm where id=#id"

Input String Was Not In a Correct Format String to Datetime

using (SqlCommand sc = new SqlCommand("Purchase_Order_History", con))
{
MessageBox.Show("Agya");
sc.CommandType = CommandType.StoredProcedure;
sc.Parameters.Add("#Invoice_no", SqlDbType.Int).Value = Convert.ToInt32(dgv.Rows[i].Cells["Column1"].Value);
sc.Parameters.Add("#Date_of_Purchase", SqlDbType.Date).Value = Date_of_Purchase.Value.ToString("yyyy/MM/dd");
sc.Parameters.Add("#Item_Name", SqlDbType.NVarChar).Value = dgv.Rows[i].Cells["Column2"].Value;
sc.Parameters.Add("#Seller_Name", SqlDbType.NVarChar).Value = dgv.Rows[i].Cells["Column3"].Value;
sc.Parameters.Add("#Company_Name", SqlDbType.NVarChar).Value = dgv.Rows[i].Cells["Column4"].Value;
sc.Parameters.Add("#Quantity", SqlDbType.Int).Value = Convert.ToInt32(dgv.Rows[i].Cells["Column5"].Value);
sc.Parameters.Add("#Unit_Price", SqlDbType.Int).Value = Convert.ToInt32(dgv.Rows[i].Cells["Column6"].Value);
sc.Parameters.Add("#Total_Price", SqlDbType.Int).Value = Convert.ToInt32(dgv.Rows[i].Cells["Column7"].Value);
sc.Parameters.Add("#Discount", SqlDbType.Int).Value = Convert.ToInt32(Discount.Text);
sc.Parameters.Add("#Paid_Amount", SqlDbType.Int).Value = Convert.ToInt32(Paid_Amount.Text);
sc.Parameters.Add("#Remaining", SqlDbType.Int).Value = Convert.ToInt32(lbl_Remaining.Text);
sc.Parameters.Add("#Sub_Total", SqlDbType.Int).Value = Convert.ToInt32(lbl_Subtotal.Text);
sc.Parameters.Add("#Total", SqlDbType.Int).Value = Convert.ToInt32(lbl_Total.Text);
con.Open();
sc.ExecuteNonQuery();
con.Close();
}
I don't know what is happening here I am getting this exception Input String Was Not In a Correct Format

You are converting the date to a string with Date_of_Purchase.Value.ToString("yyyy/MM/dd"). But the parameter #Date_of_Purchase is of type SqlDbType.Date, not of a text type. Therefore, change the code line to
sc.Parameters.Add("#Date_of_Purchase", SqlDbType.Date).Value = Date_of_Purchase.Value;
(Assuming that Date_of_Purchase is a DateTime? and you checked that it is not null.)
Note: You cannot format a date when storing it in a date or date/time column. You have to format it when displaying it.

SqlException error when I insert into database

This is basically a method to insert a record into a table. It was working fine before I decided to add in a way to check if the Customer ID already exists in the database. I get a
'System.Data.SqlClient.SqlException' occurred in System.Data.dll but was not handled in user code
Additional information: Procedure or function InsertCustomer has too many arguments specified.
on the line
command.ExecuteNonQuery();
I don't understand what's wrong.
public void add()
{
lblMessage.Text = "";
command.Connection = conn;
command.CommandType = CommandType.StoredProcedure;
command.CommandText = "CheckDetails";
command.Parameters.AddWithValue("#CustID", txtCID.Text);
conn.Open();
int check = (int)command.ExecuteScalar();
if (check == 0)
{
command.CommandText = "InsertCustomer";
command.Parameters.Add("#CustID", SqlDbType.Int).Value = txtCID.Text;
command.Parameters.Add("#FirstName", SqlDbType.VarChar).Value = txtFName.Text;
command.Parameters.Add("#Surname", SqlDbType.VarChar).Value = txtLName.Text;
command.Parameters.Add("#Gender", SqlDbType.VarChar).Value = rdoGender.Text;
command.Parameters.Add("#Age", SqlDbType.Int).Value = txtAge.Text;
command.Parameters.Add("#Address1", SqlDbType.VarChar).Value = txtAdd1.Text;
command.Parameters.Add("#Address2", SqlDbType.VarChar).Value = txtAdd2.Text;
command.Parameters.Add("#City", SqlDbType.VarChar).Value = txtCity.Text;
command.Parameters.Add("#Phone", SqlDbType.VarChar).Value = txtPhone.Text;
command.Parameters.Add("#Mobile", SqlDbType.VarChar).Value = txtMobile.Text;
command.Parameters.Add("#Email", SqlDbType.VarChar).Value = txtEmail.Text;
command.ExecuteNonQuery();
lblMessage.Text = "Customer Details Added.";
}
else
{
lblMessage.Text = "Customer ID already exists.";
}
conn.Close();
}

You are adding the same parameter twice:
command.Parameters.AddWithValue("#CustID", txtCID.Text);
// ....
command.Parameters.Add("#CustID", SqlDbType.Int).Value = txtCID.Text;
You can use command.Parameters.Clear();. But i'd prefer to use two different SqlCommands for the two procedures CheckDetails and InsertCustomer to avoid such issues.
Side-note: don't let the database try-cast the value for you. Use int.TryParse.

Remove below parameter from your statement, you already add parameter in command:
command.Parameters.Add("#CustID", SqlDbType.Int).Value = txtCID.Text;

ExecutreNonQuery and Update Statement

Receiving this error when I try saving.
Incorrect Syntax near the word update.
Seems like an obvious fix but I can't seem to find it. Hoping fresh eyes will help! Thanks
protected void btnSave_Click(object sender, EventArgs e)
{
Button EditButton = (Button)EditLoginView.FindControl("EditButton");
Button SaveButton = (Button)EditLoginView.FindControl("SaveButton");
TitleLanguage.ActiveViewIndex = 0;
LanguageView.ActiveViewIndex = 0;
EditButton.Visible = true;
SaveButton.Visible = false;
//update the file in the database
string strQuery = "UPDATE pages SET en_content = #en_Content, fr_Content = #fr_content, fr_Title=#fr_title, en_Title=#en_title, update=#update WHERE link_title = #link_title";
SqlCommand cmd = new SqlCommand(strQuery);
cmd.Parameters.Add("#en_title", SqlDbType.VarChar).Value = Edit_EnglishT.Text;
cmd.Parameters.Add("#fr_title", SqlDbType.VarChar).Value = Edit_FrenchT.Text;
cmd.Parameters.Add("#en_content", SqlDbType.VarChar).Value = Edit_English.Text;
cmd.Parameters.Add("#fr_content", SqlDbType.VarChar).Value = Edit_French.Text;
cmd.Parameters.Add("#update", SqlDbType.DateTime).Value = DateTime.Now;
cmd.Parameters.Add("#link_", SqlDbType.VarChar).Value = linktitle;
UpdateData(cmd);
}
private Boolean UpdateData(SqlCommand cmd)
{
String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["randolphConnectionString"].ConnectionString;
SqlConnection con = new SqlConnection(strConnString);
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
try
{
con.Open();
cmd.ExecuteNonQuery();
return true;
}
catch (Exception ex)
{
Response.Write(ex.Message);
return false;
}
finally
{
con.Close();
con.Dispose();
}
}

UPDATE is a reserved keyword in T-SQL. You should use it with square brackets like [UPDATE]
Like;
string strQuery = #"UPDATE pages SET en_content = #en_Content, fr_Content = #fr_content, fr_Title=#fr_title, en_Title=#en_title,
[update]=#update WHERE link_title = #link_title";
^^^^^^^^
As a general recomendation, don't use reserved keywords for your identifiers and object names in your database.
Also change your
cmd.Parameters.Add("#link_", SqlDbType.VarChar).Value = linktitle;
to
cmd.Parameters.Add("#link_title", SqlDbType.VarChar).Value = linktitle;
Because you declared your parameter name as #link_title not #link_ in your strQuery.
EDIT: For clarification, you don't need to use a method (UpdateData) for that such a process. Just use like this;
String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["randolphConnectionString"].ConnectionString;
using(SqlConnection con = new SqlConnection(strConnString))
using(SqlCommand cmd = con.CreateCommand())
{
string strQuery = #"UPDATE pages SET en_content = #en_Content, fr_Content = #fr_content, fr_Title=#fr_title, en_Title=#en_title, [update]=#update WHERE link_title = #link_title";
cmd.CommandText = strQuery;
cmd.Parameters...;
.....
.....
cmd.Connection.Open();
cmd.ExecuteNonQuery();
}

You define the field update which is a reserved keyword.
Try [update] instead like in this sample:
UPDATE pages
SET en_content = #en_Content
, fr_Content = #fr_content
, fr_Title=#fr_title
, en_Title=#en_title
, [update]=#update
WHERE link_title = #link_title

In your last parameter, you use #link_title
but in the Parameter.Add, you use:
cmd.Parameters.Add("#link_", SqlDbType.VarChar).Value = linktitle;
Try to change for this one:
cmd.Parameters.Add("#link_title", SqlDbType.VarChar).Value = linktitle;

failed to convert parameter value from a string to a decimal. c#?

Hi i want to update my ITEM_DETAILS table in C# using Sql server at the backend but when i am doing this i am getting the following error :
failed to convert parameter value from a string to a decimal. c#
Here is my code:
int x;
da.UpdateCommand = new SqlCommand("UPDATE ITEM_DETAILS SET ITEM_NAME=#ITEM_NAME,ITEM_DESCRIPTION=#ITEM_DESCRIPTION,VENDOR_NAME=#VENDOR_NAME,QUANTITY=#QUANTITY,RATE=#RATE,AMOUNT=#AMOUNT,INVOICE_NUM=#INVOICE_NUM,DATE=#DATE WHERE ITEM_MODEL=#ITEM_MODEL", con);
da.UpdateCommand.Parameters.Add("#ITEM_NAME", SqlDbType.VarChar).Value = txtItemName.Text;
da.UpdateCommand.Parameters.Add("#ITEM_DESCRIPTION", SqlDbType.VarChar).Value = txtItemDescription.Text;
da.UpdateCommand.Parameters.Add("#VENDOR_NAME", SqlDbType.VarChar).Value = txtVendor.Text;
da.UpdateCommand.Parameters.Add("#QUANTITY", SqlDbType.Int).Value = txtQuantity.Text;
da.UpdateCommand.Parameters.Add("#RATE", SqlDbType.Money).Value = txtRate.Text;
da.UpdateCommand.Parameters.Add("#AMOUNT", SqlDbType.Money).Value = txtAmount.Text;
da.UpdateCommand.Parameters.Add("#INVOICE_NUM", SqlDbType.Int).Value = txtInvoice.Text;
da.UpdateCommand.Parameters.Add("#DATE", SqlDbType.VarChar).Value = dateTimePicker1.Value;
da.UpdateCommand.Parameters.Add("#ITEM_MODEL", SqlDbType.VarChar).Value = ds.Tables[0].Rows[bs.Position][0];
con.Open();
x = da.UpdateCommand.ExecuteNonQuery();
con.Close();
if (x >= 1)
{
MessageBox.Show("Record(s) has been updated");
}
Can anyone explain me the solution to this problem?

da.UpdateCommand.Parameters.Add("#RATE", SqlDbType.Money).Value = txtRate.Text;
da.UpdateCommand.Parameters.Add("#AMOUNT", SqlDbType.Money).Value = txtAmount.Text;
You need to parse the txtRate.Text and txtAmount.Text to Currency.
string.Format("{0:#.00}", Convert.ToDecimal(myMoneyString) / 100);
See Convert String to Money
In VB, we would use the CType() conversion.