I have assigned data to a usercontrol using below code.
function calendarPickerCSD(stat)
 	{	
 		//alert(stat);
 		var ret=window.showModalDialog('PopupCal.aspx?ShowDate='+ document.getElementById('Usrdate_txtSignDate').value+ '','calendarPopup',stat);				
 		if (ret!=null)
 		{
 			document.getElementById('UsrSite_txtSignDate'').innerText=ret
; 
			alert("Sign Date can not be changed after the page gets saved.");
 		}		
 	}	
 
But, on vb page when I am trying to access the same text using txtSignDate.text, it is returning null.
 
We are migrating from 1.1 framework to 4.0. Team, please suggest on this.