Stopping onclick from firing when onclientclick is false?

Question

Is it possible to use the onclientclick property of a button to do a clientside check. If the check returns true, then fire the onclick

Answer 1

In the server page create the button:

var button1 = new Button();  
button1.ServerClick += new EventHandler(button1_ServerClick);
button1.OnClientClick = SetJsForSaveBtn();
button1.Attributes.Add("UseSubmitBehavior", "false");
panel.Controls.Add(button1 );

//Contains the server code

private void saveBtn_ServerClick(object sender, EventArgs e)
{
   //do something if ClientClick returns true
}

//Contains the JS code for the page

LiteralControl js = new LiteralControl();
panel.Controls.Add(js);
js.Text =@"   ";

private string SetJsForSaveBtn()
{
  var jsfunc = @" return CheckValidationOnClient()";
  return jsfunc ;
}