ASP.NET 1.x's Client Side Postback Script is like this: 1) {Theform = Document.Forms ["Form1"];} else {theform = document.form1;} theform .__ evenettarget.value = eventtarget.split ("$"). Join (":"); Theform .__ Eventargument. Value = Eventargument; theform.submit ();} // ->
It is from form.submit () to Submit. This will have a problem, form.onusubmit events will not be triggered, so that some Client Side Validation Script is bypass. In ASP.NET 2.0, this issue is fixed by FIX. For ASP.NET 1.x, as far as I know, SP1 has not solved this problem. We can use the following code to solve this problem: