protected void Register_User_Click(object sender, EventArgs e)
        {
            string result = "";

            if (password_register.Text == "" || reenter_password_register.Text == "" || username_register.Text == "")
            {
                Error_register.ForeColor = System.Drawing.Color.Red;
                result = "All Fields Are Mandatory";
            }
            else if (password_register.Text.ToUpper().Trim().Equals(reenter_password_register.Text.ToUpper().Trim()))
            {
                StudentSystemServiceReferece.SystemUser user = new StudentSystemServiceReferece.SystemUser();
                user.User_Name        = username_register.Text.ToUpper();
                user.User_Password    = password_register.Text.ToUpper();
                user.User_Designation = "User";
                result = client.AddUser(user);
                Error_register.ForeColor = System.Drawing.Color.Green;
            }
            else
            {
                Error_register.ForeColor = System.Drawing.Color.Red;
                result = "Both Passwords Must Be Same";
            }
            Error_register.Text = result;
        }
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            string id  = GridView1.Rows[e.RowIndex].Cells[2].Text;
            int    id_ = Convert.ToInt32(id);

            if (TextBox1.Text == "" || TextBox2.Text == "" || TextBox3.Text == "")
            {
                Admin_User_Label.ForeColor = System.Drawing.Color.Red;
                Admin_User_Label.Text      = "Fill All TextBoxs With New Values To Update Row";
                return;
            }
            StudentSystemServiceReferece.SystemUser Student = new StudentSystemServiceReferece.SystemUser();
            Student.User_Name        = TextBox2.Text.ToUpper();
            Student.User_Password    = TextBox1.Text.ToUpper();
            Student.User_Designation = TextBox3.Text.ToUpper();

            string result = client.UpdateUser(id_, Student);

            Admin_User_Label.ForeColor = System.Drawing.Color.Green;
            Admin_User_Label.Text      = result;
            GridView1.DataSource       = client.ShowUser();
            GridView1.DataBind();
        }