Question

I’ve added code the the OnClientClick property of an asp.net button and now the validation controls are not working. When I remove the OnClientClick code the validation works.

How can I get both of them to work?

<asp:Button 
ID="btnNext" 
runat="server" 
Text="Save & Continue" 
SkinID="btnContinue" 
OnClick="btnNext_Click"  
OnClientClick="_changesMade=false; return true;" 
ValidationGroup="vgPreMedSchool" Width="176px" />

Answer 1

Try this.

<asp:Button 
ID="btnNext" 
runat="server" 
Text="Save & Continue" 
SkinID="btnContinue" 
OnClick="btnNext_Click"  
OnClientClick="_changesMade=false; return Page_ClientValidate();" 
ValidationGroup="vgPreMedSchool" Width="176px" />

Page_ClientValidate() is a javascript function that asp.net uses to invoke the page validation.