Combobox SelectedIndexChanged in codebehind

Hi guys,

I want write the code for combobox  SelectedIndexChanged in codebehind said

Please help me any idea.

please find the below code

String[] arrCountries = {"English", "France", "Greek", "Germany""};
Combobox cbo1 = new Combobox();
cbo1.ID = "cbo1";
cbo1.Width = 120;
cbo1.Height = 220;
for (int i = 0; i < arrCountries.Length; i++)
{
cbo1.AddOption(arrCountries[i], arrCountries[i],"images/" + arrCountries[i].ToLower().Replace(" ", "_") + ".gif");
}
ph1.Controls.Add(cbo1);

Regards

Sambath
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