Prevent double clicking asp.net button

Prevent Double Click .Please add below code in your aspx page.

<script type="text/javascript" language="javascript">   Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);   function BeginRequestHandler(sender, args) { var oControl = args.get_postBackElement(); oControl.disabled = true; }</script>

This solution is simple and effective. On your button include this code:

OnClientClick="return CheckDouble();"

And wherever you want your JavaScript - e.g. At the bottom of your page:

<script type="text/javascript">   var submit = 0;   function CheckDouble() {     if (++submit > 1) {     alert('This sometimes takes a few seconds - please be patient.');     return false;   } } </script>

You can prevent double-clicking using this code:

Me.btnSave.Attributes.Add("onclick", "this.disabled=true;")Me.btnSave.UseSubmitBehavior = False

So you can use btnSave_Click to call your API.

Usually I have a lot of Validators in my Page: setting Validator.SetFocusOnError = True I can run this code to reenable save button if a validation failed.

Me.YourControl.Attributes.Add("onfocus", Me.btnSave.ClientID & ".removeAttribute('disabled');")