ASP.NET

 var label1=document.getElementById('hidden');<br />
<br />
       label1.value="Sandeep";<br />

System.NullReferenceException:Object reference not set to an instance of an object

txtHidden: <undefined value>:  System.Web.UI.HtmlControls.HtmlInputHidden

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Text;
using System.IO;
using System.Data.SqlClient;

namespace Web
{
	
	public class _3B2Temp : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Button btnclick;
		protected System.Web.UI.WebControls.Label lblmsg;
		protected System.Web.UI.WebControls.Label lblerr;
		protected System.Web.UI.HtmlControls.HtmlInputHidden txtHidden;
		
	
		private void Page_Load(object sender, System.EventArgs e)
		{	
			
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.btnclick.Click += new System.EventHandler(this.btnclick_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btnclick_Click(object sender, System.EventArgs e)
		{
			

				string val=txtHidden.Value;
		}
	}
}
			
</code>

P_Elza wrote:

document.getElementById('lblerr');

Christian Graus wrote:

odds are that lblerr is not a server control

if(Request.querystring["Value"]!=null)<br />
      {<br />
        Idval=Request.querystring["Value"];<br />
        label1.Text=Idval;   <br />
      }  <br />

Kasi Viswanathan wrote:

Request.querystring

R a jendran wrote:

give href= correct page.aspx...where u you want to dislay..

saravanan05 wrote:

i have 3 links
1.edit
2.delete
3.new

saravanan05 wrote:

how can i done this.