Question

I have a ValidationSummary on client side (which should be called by asp:LinkButton) that check my RequiredFieldValidator and CustomValidator :

<asp:ValidationSummary 
    ID="valSum" 
    runat="server" 
    CssClass="label" 
    HeaderText="There are these errors:" 
    ShowSummary="False" 
    ShowMessageBox="True" 
    EnableClientScript="True" 
    DisplayMode="BulletList">
</asp:ValidationSummary>

and I need, if there are the errors (so there are empty fields or the custom validators fail) call another javascript function.

I really hope that this is possible on .NET 3.5, right?

I’ve read a similar question on SO here, but is not clear at all.

Answer 1

Yes this is possible. You will need to change the OnClientClick property of your linkbutton and/or other controls causing the validation to perform. Also put your CausesValidation property to false.

  <asp:LinkButton ID="lnkButton1" runat="server" CausesValidation="false" OnClientClick="return DoValidation('');" ... />

Javascript function:

 function DoValidation(validationGroup) {
      var isValid = Page_ClientValidate(validationGroup);
      if (!isValid){
         isValid = DoSomethingElse();
      }
     return isValid;
 }

If you want to only validate a group you can pass the name of the group to the ‘DoValidation’ function.

  <asp:LinkButton ID="lnkButton1" runat="server" CausesValidation="false" OnClientClick="return DoValidation('NameOfGroup');" ... />