Removing a value from combobox

Hi Najir,


Better use DataReader instead of dataset.
Then the code pravin suggested will work.


Try this...


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 Datagridview_bind
{
    public partial class Form1 : Form
    {
        string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"];
        OleDbCommand com;
        OleDbDataAdapter oda;
        string str;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
          
            additems();

        }

        void additems()
        {
            OleDbConnection con = new OleDbConnection(ConnectionString);
            con.Open();
            str = "select * from tablename";
            com = new OleDbCommand(str, con);
            OleDbDataReader reader = com.ExecuteReader();
            while (reader.Read())
            {
                comboBox1.Items.Add(reader["name"]);
                comboBox2.Items.Add(reader["name"]);
            }
           
        }


        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            string value1 = comboBox1.Text;
            string value2 = "";
            for (int i = 0; i < comboBox2.Items.Count; i++)
            {
                value2 = comboBox2.Items[i].ToString();
                if (value1 == value2)
                {
                    comboBox2.Items.RemoveAt(i);
                }
            }
        }
    }
}



Thanks

I'm using a dataset to populate the values in the comboboxes and onload() the first value from the dataset is displayed in both the comboxes

With the above code once I select "One" from the combobox1, the same value is again displayed in combobox2.

With this code

value2 = comboBox2.Items[i].ToString();

value2 variable is not getting any values from combobox2.

try this

  private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            string value1 = comboBox1.Text;
            string value2 = "";
            //comboBox2.Items.r
            for (int i = 0; i < comboBox2.Items.Count; i++)
            {
                value2 = comboBox2.Items[i].ToString();
                if (value1 == value2)
                {
                    comboBox2.Items.RemoveAt(i);
                }
            }
        }