How to use session so that the username will be displayed in another webform ASP C# ?

use session so that the username will be displayed in another webform asp c#

if (Context.Session != null)
              {
                  BindGrid();

              }else
              {
                  Response.Redirect("Login.aspx");
              }

private void BindGrid(string sortExpression = null)
       {
           conn.Open();

           SqlCommand cmd = new SqlCommand("SELECT * from [test].[dbo].[myform] ", conn);
           SqlDataAdapter sda = new SqlDataAdapter();

           cmd.Connection = conn;
           sda.SelectCommand = cmd;
           using (DataTable dt = new DataTable())
           {
               sda.Fill(dt);
               if (sortExpression != null)
               {
                   DataView dv = dt.AsDataView();
                   this.SortDirection = this.SortDirection == "ASC" ? "DESC" : "ASC";
                   dv.Sort = sortExpression + " " + this.SortDirection;
                   GridView2.DataSource = dv;
               }
               else
               {
                   GridView2.DataSource = dt;
               }
               GridView2.DataBind();
               conn.Close();

           }

       }