C# / ASP
Can anyone help out with a simple thing but bear in mind I am a novice. I have a problem trying to implement dropdownlist selection dependant form content. I have a dropdownlist control which declared as: id="DropDownList2" runat="server" AutoPostBack="true" onSelectedIndexChanged="ChangeContent", where ChangeContent is a protected method written in C#. The whole thing works and when I change the dropdown selection the required information is displayed correctly but the problem is that instead of displaying everything on the same window it launches a second one which is bigger (where size comes from?) and sits on top of the whole application. Ideally I want it to work similar to windows application where you can change selection and everything happens without reloading the form if this is not possible then at least help me to get rid of the second window.
I would appreciate any contribution.