Problem with ComboBox

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hi
guys i am having an unusual problem with a combo box
i have set a datasource for my combo box to display values in a table (oledb)
when i compile program it runs correctly and combo box shows the data
but when i select another value in combo box, it replaces the first value
for example my items are :

Dog
Cat
Monkey
Lion

when i select "Monkey" in combo box (in compile), then it becomes like this :

Monkey
Cat
Monkey
Lion

what should i do ?

[no coding involved here just drag and drop]

Posted 6-Jul-13 19:27pm

KababChi

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Aydin Homay 7-Jul-13 5:09am

Could you post your combo box binding and combo box properties code here ?

Ankush Bansal 7-Jul-13 10:46am

Looks like something is fishy in your datasource... can you post some code ?

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maneavnash · Answer 1 · 2013-07-08T01:42:00

try this code

Quote:
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.Data.OleDb;
namespace combox
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

string str = "";
OleDbCommand com;
private void Form1_Load(object sender, EventArgs e)
{
OleDbConnection con = new OleDbConnection(@"put your connection string");
con.Open();

// select query which fetch record to bind in combobox
str = "select * from tbl_name";

com = new OleDbCommand(str, con);

OleDbDataReader reader = com.ExecuteReader();

while (reader.Read())

{// replace your combobox name
comboBox1.Items.Add(reader["name"]);
}
reader.Close();
con.Close();
}
}
}