ช่วยแก้ไขปัญหา เกี่ยวกับการ Update ข้อมูล หนอยครับ มันไม่ Update ให้อะครับ

        protected void send_Update1_Click(object sender, EventArgs e)
        {
            strConnection = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            Conn = new SqlConnection(strConnection);
            Conn.Open();
            sqlcmd.Connection = Conn;

            strSQL = new StringBuilder();
            strSQL.Append(" SELECT COUNT(*) FROM Member ");
            strSQL.Append(" WHERE Email = @Email AND Username <> @Username");
            sqlcmd = new SqlCommand(strSQL.ToString(), Conn);
            sqlcmd.Parameters.Add("@Email", SqlDbType.VarChar).Value = this.txtEmail.Text;
            sqlcmd.Parameters.Add("@Username", SqlDbType.VarChar).Value = Session["strUsername"];
            intCount = (int)sqlcmd.ExecuteScalar();
            if (intCount >= 1)
            {
                this.lblMsg.ForeColor = System.Drawing.Color.Red;
                this.lblMsg.Text = "Email already exists!!";
                return;
            }

            //'*** Update Profile ***//
            strSQL = new StringBuilder();
            strSQL.Append(" UPDATE Member ");
            strSQL.Append(" SET Password = @Password ");
            strSQL.Append(" ,Firstname = @Firstname ");
            strSQL.Append(" ,Lastname = @Lastname ");
            strSQL.Append(" ,Email = @Email ");
            strSQL.Append(" ,Telephone = @Telephone ");
            strSQL.Append(" ,Mobile = @Mobile ");
            strSQL.Append(" ,Address = @Address ");
            strSQL.Append(" ,Province = @Province ");
            strSQL.Append(" ,City = @City ");
            strSQL.Append(" ,Zipcode = @Zipcode ");
            strSQL.Append(" WHERE Username = @Username");

            sqlcmd = new SqlCommand(strSQL.ToString(), Conn);
            sqlcmd.Parameters.Add("@Password", SqlDbType.VarChar).Value = this.txtPassword.Text;
            sqlcmd.Parameters.Add("@Firstname", SqlDbType.VarChar).Value = this.txtFirstname.Text;
            sqlcmd.Parameters.Add("@Lastname", SqlDbType.VarChar).Value = this.txtLastname.Text;
            sqlcmd.Parameters.Add("@Email", SqlDbType.VarChar).Value = this.txtEmail.Text;
            sqlcmd.Parameters.Add("@Telephone", SqlDbType.VarChar).Value = this.txtTelephone.Text;
            sqlcmd.Parameters.Add("@Mobile", SqlDbType.VarChar).Value = this.txtMobile.Text;
            sqlcmd.Parameters.Add("@Address", SqlDbType.VarChar).Value = this.txtAddress.Text;
            sqlcmd.Parameters.Add("@Province", SqlDbType.VarChar).Value = this.txtProvince.Text;
            sqlcmd.Parameters.Add("@City", SqlDbType.VarChar).Value = this.txtCity.Text;
            sqlcmd.Parameters.Add("@Zipcode", SqlDbType.VarChar).Value = this.txtZipcode.Text;

            sqlcmd.Parameters.Add("@Username", SqlDbType.VarChar).Value = Session["strUsername"];
            sqlcmd.ExecuteNonQuery();

            Conn.Close();
            Conn = null;

        }