Avoid page refresh on button click asp.net

Question

Hi.

Im using a button like this:

<asp:Button ID="btnShowAvailableReports" class="btnBasic" OnClick="btnShowAvailableReports_Click" runat="server" Text="View reports" />

and this button click event triggers a div placeholder which hold the available reports.

 

The problem is that this reloads the page and re-renders the basic information on the page.

If I then click the menu item where this information is it shows properly as it should - but I have to re-click the menu item to get back due to the page refresh.

 

I have tried:

 

- Add button property OnClientClick="return false;"

This blocks my onclick-event that I need.

- Use page header: <%@ Page Language="C#" MaintainScrollPositionOnPostBack="true" Title="Home" %>

 

This seems to do nothing at all.

 

Thankful for all help.

Cheers.