Adding child control to dropdownlist control

Question

Hello I need to add child control(a textbox) based on the selected value of the dropdown list.I have done something like private void DropDownList1_SelectedIndexChanged(object sender System.EventArgs e) { if(DropDownList1.SelectedIndex==4) { TextBox txt = new TextBox(); DropDownList1.Controls.Add(txt); } } The above code gives the error saying 'System.Web.UI.WebControls.DropDownList' does not allow child controls. Any Help..????? Thanks Regards Soumya

soumya p n · Answer

Even i could not understand it entirely.. Need more explanation with an example.

suhail ahmed · Answer

can you please reply me with the code snippet. I am facing difficulty how to use and override that method. thnx in advance

jake shi · Answer

if you want to add child controls to dropdownlist you must inherit the base class:system.web.ui.controland implement the interface:INamingContainer then you can override the base class's method:CreateChildControls.In this method you can do like this Control.Add(your textbox's name) you can try it . good luck.