Onclientclick and button click event not work togather

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when popup window on , i give one value and click on button. problem is hear that when i click on button it will load the page and inserted value will clear . so, i want that when i click on button it should not tack load and my button click event must me run.

<asp:Button ID="btnfirstnext" TabIndex="1" runat="server" Text="Next" class="next1 action-button" OnClientClick="return false;" OnClick="btnfirstnext_Click" />

What I have tried:

OnClientClick="return false;" when i use this it will not fire a button click event
and i if i remove OnClientClick="return false;" , page will be load and i don't want it.

Posted 6-May-16 19:17pm

Kumbhani Bhavesh

Updated 6-May-16 19:35pm

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Karthik_Mahalingam · Accepted Answer · 2016-05-06T19:31:00

OnClientClick is an attribute for Asp:Button which takes boolean value as input from a javascript code or a function.
if the OnClientClick value is true, it will fire (PostBack) the server Event (OnClick), else it will remain same in that page.

JavaScript

OnClientClick ="return true" // It will fire OnCick event

JavaScript

OnClientClick ="return false" // It wont do any action.

Now you can write your code which suits your requirement.

By defalut the OnClientClick is set to true, if you have not added the attribute in the tag.

if you want to call it from a function.

C#

function SomeJsFunction()
      {
          // write some logic/Validation/etc in such a way that it returns boolean value ( true|false)
          if (....Your Code.....)
              return true;
          else
              return false;
      }

JavaScript

OnClientClick="return SomeJsFunction();"