In this code I read the patient infos from database with patientId parameter passed with URL. Then I fill the 5 textboxes with this values at Page_Load. But at Update_Click the code can't reach the updated textbox values, it reads only initial values of the textboxes. I saw it at debugging. No problems at database level. When I remove the Page_Load code and leave the textboxes empty initially, the code from Update_Click can reach the user input and update the values. What is the problem?
using MySql.Data.MySqlClient;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
public partial class admin_Testadmin : System.Web.UI.Page
{
Patient patient = new Patient();
protected void Page_Load(object sender, EventArgs e)
{
String cs = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
using (MySqlConnection cn = new MySqlConnection(cs))
{
MySqlCommand command = new MySqlCommand(StoredProcedures.select_patient, cn);
command.CommandType = CommandType.StoredProcedure;
int pid = int.Parse(Request.QueryString["patientId"]);
command.Parameters.AddWithValue("pid", pid);
command.Parameters["pid"].Direction = ParameterDirection.Input;
cn.Open();
MySqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
txtName.Text = patient.Name = (String)reader[0];
txtSurname.Text = patient.Surname = (String)reader[1];
txtFathersname.Text = patient.Fathersname = (String)reader[2];
txtStatus.Text = patient.Status = (String)reader[3];
txtSuccessDescription.Text = patient.SuccessDescription = (String)reader[4];
patient.Id = (int)reader[5];
}
reader.Close();
cn.Close();
}
}
protected void Update_Click(object sender, EventArgs e)
{
String cs = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
using (MySqlConnection cn = new MySqlConnection(cs))
{
MySqlCommand command = new MySqlCommand(StoredProcedures.update_patient, cn);
command.CommandType = CommandType.StoredProcedure;
patient.Name = txtName.Text.Trim();
patient.Surname = txtSurname.Text.Trim();
patient.Fathersname = txtFathersname.Text.Trim();
patient.Status = txtStatus.Text.Trim();
patient.SuccessDescription = txtSuccessDescription.Text;
patient.Id = int.Parse(Request.QueryString["patientId"]);
command.Parameters.Add("pname", MySqlDbType.VarChar).Value = patient.Name;
command.Parameters.Add("psurname", MySqlDbType.VarChar).Value = patient.Surname;
command.Parameters.Add("pfathersname", MySqlDbType.VarChar).Value = patient.Fathersname;
command.Parameters.Add("pstatus", MySqlDbType.VarChar).Value = patient.Status;
command.Parameters.Add("psuccessdescription", MySqlDbType.Text).Value = patient.SuccessDescription;
command.Parameters.AddWithValue("pid", patient.Id);
command.Parameters["pid"].Direction = ParameterDirection.Input;
cn.Open();
if (command.ExecuteNonQuery() > 0)
{
ResultLabel.Text = "";
ResultLabel.Text = "Update success";
}
cn.Close();
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
return;
// Rest of your code here
}
In the case of a postback, you do not want to overwrite what the user typed.
Here are some docs about the ASP.NET page life cycle.
Related
Here is the code of my .aspx page,
When I click on update it runs the page doesn't show any errors and the row is not updated in my blog table.
The exception doesn't display anything, and i have a row with the id in my table.
The select command in the Page_Load() works perfectly.
using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace Blog
{
public partial class update : System.Web.UI.Page
{
SqlConnection connection = new SqlConnection(##################);
protected void Page_Load(object sender, EventArgs e)
{
string id = Request.QueryString["id"];
string sql = "select * from blog where Id=#id";
SqlCommand sqlCommand = new SqlCommand(sql,connection);
sqlCommand.Parameters.AddWithValue("#id", id);
connection.Open();
SqlDataReader dataReader = sqlCommand.ExecuteReader();
while (dataReader.Read())
{
DropDownListCategory.SelectedIndex = DropDownListCategory.Items.IndexOf(DropDownListCategory.Items.FindByText(dataReader["category"].ToString().Trim()));
TextBoxTitle.Text = dataReader["title"].ToString();
TextBoxDesc.Text = dataReader["description"].ToString();
}
connection.Close();
}
protected void Timer1_Tick(object sender, EventArgs e)
{
LabelDate.Text = DateTime.Now.ToString();
}
protected void Update_Click(object sender, EventArgs e)
{
try
{
int id = Convert.ToInt32(Request.QueryString["id"].Trim());
string sql2 = "UPDATE blog SET title = #title , category = #category , description = #description , posteddate = #posteddate WHERE Id=#id";
connection.Open();
SqlCommand sqlCommand2 = new SqlCommand(sql2, connection);
sqlCommand2.Parameters.AddWithValue("#id", id);
sqlCommand2.Parameters.AddWithValue("#title", TextBoxTitle.Text);
sqlCommand2.Parameters.AddWithValue("#category", DropDownListCategory.SelectedItem.Text.ToString());
sqlCommand2.Parameters.AddWithValue("#description", TextBoxDesc.Text);
sqlCommand2.Parameters.AddWithValue("#posteddate", DateTime.Now.ToString());
sqlCommand2.ExecuteNonQuery();
}
catch(Exception ex)
{
Label1.Text = ex.Message;
}
connection.Close();
//Response.Redirect("Default.aspx");
}
}
}
Added a if(!IsPostBack){} now works fine, Thank you
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string id = Request.QueryString["id"];
string sql = "select * from blog where Id=#id";
SqlCommand sqlCommand = new SqlCommand(sql, connection);
sqlCommand.Parameters.AddWithValue("#id", id);
connection.Open();
SqlDataReader dataReader = sqlCommand.ExecuteReader();
while (dataReader.Read())
{
DropDownListCategory.SelectedIndex = DropDownListCategory.Items.IndexOf(DropDownListCategory.Items.FindByText(dataReader["category"].ToString().Trim()));
TextBoxTitle.Text = dataReader["title"].ToString();
TextBoxDesc.Text = dataReader["description"].ToString();
}
connection.Close();
}
}
I am developing windows application .Net in C#
DB stored inside the C# Application ".....\SQliteExample\SQliteExample\bin\Debug\MyDatabase.sqlite"
I can insert,update ,view and Delete to the table with the above code and view its contents in another activity with no troubles at all. However, when I restart the application I found that what I have inserted data before I restart the application has gone!
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SQLite;
namespace SQliteExample
{
public partial class Form1 : Form
{
SQLiteConnection connection = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
public Form1()
{
InitializeComponent();
SQLiteConnection.CreateFile("MyDatabase.sqlite");
connection.Open();
string sql = "create table Employee1 (EmpID int,EmpName varchar(20), age int,Salary int,Phone int , Address Varchar(20))";
SQLiteCommand command = new SQLiteCommand(sql, connection);
command.ExecuteNonQuery();
connection.Close();
}
private void btnSave_Click(object sender, EventArgs e)
{
if (connection.State != ConnectionState.Open)
connection.Open();
string sql1 = "insert into Employee1 (EmpID,EmpName,Age,Salary,Phone,Address) values (?,?,?,?,?,?)";
SQLiteCommand command = connection.CreateCommand();
command.CommandText = sql1;
command.Parameters.AddWithValue("EmpID", textBox1.Text);
command.Parameters.AddWithValue("EmpName", textBox2.Text);
command.Parameters.AddWithValue("Age", textBox3.Text);
command.Parameters.AddWithValue("Salary", textBox4.Text);
command.Parameters.AddWithValue("Phone", textBox5.Text);
command.Parameters.AddWithValue("Address", textBox6.Text);
command.ExecuteNonQuery();
connection.Close();
MessageBox.Show("Data Saved");
Clear();
View();
}
private void Clear()
{
textBox1.Text = string.Empty;
textBox2.Text = string.Empty;
textBox3.Text = string.Empty;
textBox4.Text = string.Empty;
textBox5.Text = string.Empty;
textBox6.Text = string.Empty;
}
private void View()
{
string sql3 = "select * from Employee1 order by EmpID asc";
SQLiteCommand command3 = new SQLiteCommand(sql3, connection);
DataTable dt = new DataTable();
SQLiteDataAdapter da = new SQLiteDataAdapter(command3);
da.Fill(dt);
dataGridView1.DataSource = dt;
connection.Close();
}
private void btnSelect_Click(object sender, EventArgs e)
{
View();
}
private void btnDelete_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(textBox1.Text))
{
if (connection.State != ConnectionState.Open)
connection.Open();
string sql1 = "delete from Employee1 where EmpID = ?";
SQLiteCommand command = connection.CreateCommand();
command.CommandText = sql1;
command.Parameters.AddWithValue("EmpID", int.Parse(textBox1.Text));
command.ExecuteNonQuery();
connection.Close();
Clear();
View();
}
else
{
MessageBox.Show("Please Enter EmpID");
}
}
}
}
Thanks in Advance,
On recompilation you recreate the database file and recreate the table "employee". Therefore all your previous data is lost.
I'm not really sure where the SqlConnection, SqlCommand and the Open()/Close() goes. I want to use just the single variable cmd throughout the program, hence not using the SqlCommand cmd = new SqlCommand('SELCT * FROM blabla); format.
EDIT: My code below results to the textbox having the text "System.Data.SqlClient.SqlCommand" when i click the button.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Data.SqlTypes;
namespace WindowsFormsApplication2
{
public partial class Form1 : Form
{
SqlConnection con = new SqlConnection(#"Data Source=EDIOTH\SQLEXPRESS;
Initial Catalog=Try; Integrated Security=SSPI");
SqlCommand cmd = new SqlCommand();
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
con.Open();
cmd.CommandText = "SELECT Pnt_Lname FROM PATIENT WHERE Pnt_ID = 1;";
txtBox1.Text = cmd.ToString();
con.Close();
}
}
}
you can create constant string to hold the connection string and then you can do as below in your button1_Click
you don't need to call the close method of sql connection when you use using block as below
using(SqlConnection con = new SqlConnection(connectionString))
using(SqlCommand cmd = con.CreateCommand())
{
cmd.CommandText = "SELECT Pnt_Lname FROM PATIENT WHERE Pnt_ID = 1";
con.Open();
txtBox1.Text =cmd.ExecuteScalar() as string;
}
And also if you need to read Pnt_Lname from database you better use ExecuteScalar method
You can use this structure. Use using to properly close and dispose of SqlConnection.
Also, you can define the connection string in your config file and use it from there.
using (SqlConnection conn = new SqlConnection(#"Data Source=EDIOTH\SQLEXPRESS;
Initial Catalog=Try; Integrated Security=SSPI"))
{
conn.Open();
SqlCommand command = conn.CreateCommand();
command.CommandText = "SELECT Pnt_Lname FROM PATIENT WHERE Pnt_ID = 1";
txtBox1.Text = (String)command.ExecuteScalar();
}
In case this would be of help to anyone, this is the answer to my question:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace Book
{
public partial class frmBook : Form
{
SqlConnection con =
new SqlConnection(#"Data Source=EDIOTH\SQLEXPRESS;
Initial Catalog=XXDB; Integrated Security=SSPI");
SqlCommand cmd;
public frmBook()
{
InitializeComponent();
}
private void frmBook_Load(object sender, EventArgs e)
{
con.Open();
cmd = new SqlCommand("SELECT min(Book_ID) FROM Book;",con);
txtID.Text = cmd.ExecuteScalar().ToString();
cmd = new SqlCommand("SELECT title FROM Book WHERE Book_ID = '"
+ txtID.Text + "'", con);
txtTitle.Text = cmd.ExecuteScalar().ToString();
con.Close();
btnSave.Enabled = false;
}
private void btnNext_Click(object sender, EventArgs e)
{
int count = int.Parse(txtID.Text) + 1;
con.Open();
cmd = new SqlCommand("SELECT title FROM Book WHERE Book_ID = '"
+ count.ToString() +"'", con);
txtTitle.Text = cmd.ExecuteScalar().ToString();
txtID.Text = count.ToString();
con.Close();
}
private void btnNew_Click(object sender, EventArgs e)
{
txtID.Text = "";
txtTitle.Text = "";
txtAuthor.Text = "";
btnNew.Enabled = false;
btnSave.Enabled = true;
}
private void btnSave_Click(object sender, EventArgs e)
{
con.Open();
cmd = new SqlCommand("INSERT INTO Book (Book_ID, Title, Author) " +
"VALUES ('"+ txtID.Text +
"','"+ txtTitle.Text +
"','"+ txtAuthor.Text +"');", con);
cmd.ExecuteNonQuery();
con.Close();
MessageBox.Show("Data saved!");
btnSave.Enabled = false;
}
private void btnClose_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
I can display my data in my textbox, dropdownlist after retrieve data from sql database, but when i proceed with my update button, the information edited in the textbox or dropdownlist wouldn't update into the database. I tried to remove the code in page load, and re-key in all the data manually, it can be update. All I want is retrieve data from database and display it in the textbox, and it can be update into the database after make some changes from the textbox. Can someone help me on this? Thanks.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
public partial class UpdateCustomerDetails : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection con1 = new SqlConnection("Data Source=USER-PC;Initial Catalog=webservice_database;Integrated Security=True");
DataTable dt = new DataTable();
con1.Open();
SqlDataReader myReader = null;
SqlCommand myCommand = new SqlCommand("select * from customer_registration where username='" + Session["username"] + "'", con1);
myReader = myCommand.ExecuteReader();
while (myReader.Read())
{
TextBoxPassword.Text = (myReader["password"].ToString());
TextBoxRPassword.Text = (myReader["retypepassword"].ToString());
DropDownListGender.SelectedItem.Text = (myReader["gender"].ToString());
DropDownListMonth.Text = (myReader["birth"].ToString());
DropDownListYear.Text = (myReader["birth"].ToString());
TextBoxAddress.Text = (myReader["address"].ToString());
TextBoxCity.Text = (myReader["city"].ToString());
DropDownListCountry.SelectedItem.Text = (myReader["country"].ToString());
TextBoxPostcode.Text = (myReader["postcode"].ToString());
TextBoxEmail.Text = (myReader["email"].ToString());
TextBoxCarno.Text = (myReader["carno"].ToString());
}
con1.Close();
}
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection("Data Source=USER-PC;Initial Catalog=webservice_database;Integrated Security=True");
SqlCommand cmd = new SqlCommand("UPDATE customer_registration SET password = #password, retypepassword = #retypepassword, gender = #gender, birth = #birth, address = #address, city = #city, country = #country, postcode = #postcode, email = #email, carno = #carno where username='" + Session["username"] + "'", con);
con.Open();
cmd.Parameters.AddWithValue("#password", TextBoxPassword.Text);
cmd.Parameters.AddWithValue("#retypepassword", TextBoxRPassword.Text);
cmd.Parameters.AddWithValue("#gender", DropDownListGender.Text);
cmd.Parameters.AddWithValue("#birth", DropDownListDay.Text + DropDownListMonth.Text + DropDownListYear.Text);
cmd.Parameters.AddWithValue("#address", TextBoxAddress.Text);
cmd.Parameters.AddWithValue("#city", TextBoxCity.Text);
cmd.Parameters.AddWithValue("#country", DropDownListCountry.Text);
cmd.Parameters.AddWithValue("#postcode", TextBoxPostcode.Text);
cmd.Parameters.AddWithValue("#email", TextBoxEmail.Text);
cmd.Parameters.AddWithValue("#carno", TextBoxCarno.Text);
cmd.ExecuteNonQuery();
con.Close();
if (IsPostBack)
{
Response.Redirect("UpdateSuccess.aspx");
}
}
Wrap your all statements in !IsPostBack condition on page load.
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
// all statements
}
}
This will fix your issue.
The answer is .IsPostBack as suggested by #Kundan Singh Chouhan. Just to add to it, move your code into a separate method from Page_Load
private void PopulateFields()
{
using(SqlConnection con1 = new SqlConnection("Data Source=USER-PC;Initial Catalog=webservice_database;Integrated Security=True"))
{
DataTable dt = new DataTable();
con1.Open();
SqlDataReader myReader = null;
SqlCommand myCommand = new SqlCommand("select * from customer_registration where username='" + Session["username"] + "'", con1);
myReader = myCommand.ExecuteReader();
while (myReader.Read())
{
TextBoxPassword.Text = (myReader["password"].ToString());
TextBoxRPassword.Text = (myReader["retypepassword"].ToString());
DropDownListGender.SelectedItem.Text = (myReader["gender"].ToString());
DropDownListMonth.Text = (myReader["birth"].ToString());
DropDownListYear.Text = (myReader["birth"].ToString());
TextBoxAddress.Text = (myReader["address"].ToString());
TextBoxCity.Text = (myReader["city"].ToString());
DropDownListCountry.SelectedItem.Text = (myReader["country"].ToString());
TextBoxPostcode.Text = (myReader["postcode"].ToString());
TextBoxEmail.Text = (myReader["email"].ToString());
TextBoxCarno.Text = (myReader["carno"].ToString());
}
con1.Close();
}//end using
}
Then call it in your Page_Load
protected void Page_Load(object sender, EventArgs e)
{
if(!Page.IsPostBack)
{
PopulateFields();
}
}
protected void Page_Load(object sender, EventArgs e)
{
DropDownTitle();
}
protected void DropDownTitle()
{
if (!Page.IsPostBack)
{
string connection = System.Configuration.ConfigurationManager.ConnectionStrings["AuzineConnection"].ConnectionString;
string selectSQL = "select DISTINCT ForumTitlesID,ForumTitles from ForumTtitle";
SqlConnection con = new SqlConnection(connection);
SqlCommand cmd = new SqlCommand(selectSQL, con);
SqlDataReader reader;
try
{
ListItem newItem = new ListItem();
newItem.Text = "Select";
newItem.Value = "0";
ForumTitleList.Items.Add(newItem);
con.Open();
reader = cmd.ExecuteReader();
while (reader.Read())
{
ListItem newItem1 = new ListItem();
newItem1.Text = reader["ForumTitles"].ToString();
newItem1.Value = reader["ForumTitlesID"].ToString();
ForumTitleList.Items.Add(newItem1);
}
reader.Close();
reader.Dispose();
con.Close();
con.Dispose();
cmd.Dispose();
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
}
Populate the text box values in the Page Init event as opposed to using the Postback.
protected void Page_Init(object sender, EventArgs e)
{
DropDownTitle();
}
[got a bit further so its updated]
Hello There, i really hope you are able to help me!
Now the first part of my code does work, and I do get my report numbers out in my combobox, and i'm able to write that number to a lbl. now I need to take that number and get the rest of my data from my Access 2003 database, and drop them in a string (my output). ( I dont really want all the data loaded into my mem when i open the program, so i belive only getting the [Rapport nr] until i choose one, where I will load the data into the string and save it there for now) :)
my problem is that this wont work!
output = dbReader.GetString(dbReader.GetOrdinal("Dato")).ToString();
OBS: my error is now that it says i dont have any data in my rows or coloums
my code is as follows:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.Data.OleDb;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private string aktuelRapportNR = "";
string output = "";
private string connectionName = "Provider=Microsoft.Jet.OLEDB.4.0;"
+ "Data Source=semcqdjh-access 2007.mdb;"
+ "Jet OLEDB:Database Password=;";
public Form1()
{
InitializeComponent();
#region Indlæsning af combobox, med rapport numre
OleDbConnection Myconnection = null;
OleDbDataReader dbReader = null;
Myconnection = new OleDbConnection(connectionName);
Myconnection.Open();
OleDbCommand cmd = Myconnection.CreateCommand();
cmd.CommandText = "SELECT [Rapport nr] FROM AVR";
dbReader = cmd.ExecuteReader();
int rapportNR;
while (dbReader.Read())
{
rapportNR = (int)dbReader.GetInt32(dbReader.GetOrdinal("Rapport nr"));
comboBox1.Items.Add(rapportNR);
}
dbReader.Close();
Myconnection.Close();
#endregion
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
aktuelRapportNR = comboBox1.SelectedItem.ToString();
lblAktuelRapportNR.Text = aktuelRapportNR;
OleDbConnection Myconnection = null;
OleDbDataReader dbReader = null;
Myconnection = new OleDbConnection(connectionName);
Myconnection.Open();
OleDbCommand cmd = Myconnection.CreateCommand();
cmd.CommandText = "SELECT [Dato] FROM AVR WHERE [Rapport nr] =" + aktuelRapportNR;
dbReader = cmd.ExecuteReader();
try
{
output = dbReader.GetString(dbReader.GetOrdinal("Dato")).ToString();
}
catch (Exception)
{
output = "fejl eller tom";
}
dbReader.Close();
Myconnection.Close();
label1.Text = output;
}
private void btnExport_Click(object sender, EventArgs e)
{
}
}
}
i figured this out :D after a break i went back to this and tried to see if there where enother method i could use and there was :P i figured by the error that it was properly something about the types so insted of taking one out and trying to work around that i took the hole row out and placed it in a object array :P by using GetValues in the dbReader i got it to work, so i can now move on :D for those who might be interested! here is my code :P its not pretty but it works :P i allso took in som try catch just to make sure i check for errors and getting a friendly respons on that :)
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.Data.OleDb;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private string aktuelRapportNR = "";
string output;
private string connectionName = "Provider=Microsoft.Jet.OLEDB.4.0;"
+ "Data Source=semcqdjh-access 2007.mdb;"
+ "Jet OLEDB:Database Password=;";
public Form1()
{
InitializeComponent();
#region Indlæsning af combobox, med rapport numre
try
{
OleDbConnection Myconnection = null;
OleDbDataReader dbReader = null;
Myconnection = new OleDbConnection(connectionName);
Myconnection.Open();
OleDbCommand cmd = Myconnection.CreateCommand();
cmd.CommandText = "SELECT [Rapport nr] FROM AVR";
dbReader = cmd.ExecuteReader();
int rapportNR;
while (dbReader.Read())
{
rapportNR = (int)dbReader.GetInt32(dbReader.GetOrdinal("Rapport nr"));
comboBox1.Items.Add(rapportNR);
}
dbReader.Close();
Myconnection.Close();
txtStatus.Text = "Indlæsning Fuldført! Vælg venligst en rapport";
}
catch (Exception)
{
txtStatus.Text = "Indlæsning Fejlet!";
}
#endregion
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
aktuelRapportNR = comboBox1.SelectedItem.ToString();
lblAktuelRapportNR.Text = aktuelRapportNR;
txtStatus.Text = "Du har valgt rapport nr.: " + aktuelRapportNR + "! Klik på export";
}
private void btnExport_Click(object sender, EventArgs e)
{
try
{
OleDbConnection Myconnection = null;
OleDbDataReader dbReader = null;
Myconnection = new OleDbConnection(connectionName);
Myconnection.Open();
OleDbCommand cmd = Myconnection.CreateCommand();
cmd.CommandText = "SELECT * FROM AVR WHERE [Rapport nr] =" + aktuelRapportNR;
dbReader = cmd.ExecuteReader();
object[] liste = new object[dbReader.FieldCount];
if (dbReader.Read() == true)
{
int NumberOfColums = dbReader.GetValues(liste);
for (int i = 0; i < NumberOfColums; i++)
{
output += "|" + liste[i].ToString();
}
}
dbReader.Close();
Myconnection.Close();
txtStatus.Text = "Export Lykkes! Luk programmet!";
}
catch (Exception)
{
txtStatus.Text = "Export Fejlet!";
}
}
}
}