title: OnClientClick not working
body: <p>I have a back and next button in that there is a OnClientClick validation function.</p>
  
  <p>This function is not called when i click on that, Please help me </p>
  
  <p>Code has given below:</p>
  
  <pre><code>&lt;asp:Button ID="btn_view1_back" runat="server" Text="Back" 
              CausesValidation="False" ValidationGroup="Form2" /&gt;
  
  &lt;asp:Button ID="btn_View1_Next" runat="server" CausesValidation="true" Text="Next" 
              ValidationGroup="Form2" OnClientClick="return ValidateDropDown();" 
              UseSubmitBehavior ="true" /&gt;
  </code></pre>