WebForm1.aspx:
<form action="WebForm2.aspx" method="post">
First name:
<input type="text" name="fname"><br>
Last name:
<input type="text" name="lname"><br>
<input type="submit" value="Submit">
</form>
WEBFORM2.aspx:
<body>
    WELCOME
    <%=formValue%>
</body>
SOURCE:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace HTMLPOST
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        public string formValue = string.Empty;
        protected void Page_Load(object sender, EventArgs e)
        {
            string formValue;
            if (!string.IsNullOrEmpty(Request.Form["fname"]))
            {
                formValue = Request.Form["fname"];
            }
        }
    }
}
ACTUAL RESULT: 
WELCOME 
EXCEPTING RESULT:
WELCOME MUTHUKUMAR