Other scripts and Asp.net scripts are prone to problems during verification.

However, when other scripts are used together with the Asp.net verification control for script verification, it is easy for Asp.net to verify the control without any effect. The following provides a better solution.

 

Code <Asp: button id = "btnok" runat = "server" text = "OK" onclick = "btnok_click" onclientclick = "If (typeof (page_clientvalidate) = 'function ') if (page_clientvalidate () {return isvalidusername ();}"
Style = "margin-left: 0px" width = "49px"/>

 

 

 

Here, isvalidusername () is what you want to verify. This will first let Asp.net verify the control and then verify your own stuff.