Removing a value from combobox

Question

I've two combo boxes listed with same values from the database.

If I select a value from the first combo box, that value should not be listed in the second combo box.

ComboBox1              ComboBox2 One                   One Two                   Two Three                 Three Four                   Four Five                   Five

If I select 'Three' from the ComboBox1, the value 'Three' should not be listed in ComboBox2 while making a selection from ComboBox2.

Satyapriya Nayak · Answer

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 { value2 = comboBox2.Items[i].ToString(); if (value1 == value2) { comboBox2.Items.RemoveAt(i); } } } } } Thanks

najir m · Answer

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.

Pravin Ghadge · Answer

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