C# dropdownlist change event

Question

There\'s the a

Answer 1

Set AutoPostBack property of your DropDownList control to true.

<asp:DropDownList AutoPostBack="true" runat="server" ID="myListDropDown" 
                CssClass="text" OnSelectedIndexChanged="myListDropDown_Change" />

Answer 2

Autopostback property of the DropDownList needs to be set to 'true'.