code for combo box

Question

i have two combo box1 and combo box 2. cb1 contain I - year. II - year. III - year... cb2 contains the first.second.third.forth.fifth.sixth. now i have to split each two items given to I - year... respectively.. i.e I - year ( first & second).. II - year ( third & forth ).. III - year ( fifth & sixth ).. now.. i have to select I - year in cb1 means first and second items only visible on cb2.. help me ... code for that in c#.net

Manu Prasad · Answer

Hi You may try something like this... public partial class Form1 : Form { Dictionary > cbsource = new Dictionary >(); public Form1() { InitializeComponent(); } private void Form1_Load(object sender EventArgs e) { //Intialize dictionary cbsource.Add(Ist new List { 1 2 }); cbsource.Add(IInd new List { 3 4 }); cbsource.Add(IIIrd new List { 5 6 }); //Add items to first combobox cb1.DataSource = cbsource.Keys.ToList(); } //Add items dynamically to combobox 2 private void cb1_SelectedIndexChanged(object sender EventArgs e) { cb2.DataSource = cbsource[cb1.SelectedItem.ToString()]; } }