i have written this code and working properly.bt i dont knw how to encode and decode values..
can any one give me solution about hiding the values in the URL..
protected void btnadd_Click(object sender, EventArgs e)
{
string username = txtusername.Text;
string mname = txtmname.Text;
string lname = txtlname.Text;
Response.Redirect("QueryString2.aspx?name="+username+"&name2="+mname+"&name3="+lname);
}