ＳＱＬ更新時のエラーについて

foreach (SystemMyData stMember in smd)//[cnt]

{

    if (!string.IsNullOrEmpty(stMember.UserName))

    {

         int nIsUser = 0;

         for (int i = 0; i < UserData.Length; ++i)

         {

                if (stMember.UserName == UserData[i].UserID)

                {

                     nIsUser = 1;

                     Session["SetteiUsermeiData"] = string.Format("{0}:{1}:{2}:{3}:{4}", UserData[i].UserID, stMember.UserPassword,

                             UserData[i].UserDisplayName, UserData[i].UserSort, stMember.Email);

                     SqlDataSource2.Update();

                     }

               }

               // 顧客が見つからなかったとき。（たぶん新規）

               if (nIsUser == 0)

               {

               Session["SetteiUsermeiData"] = string.Format("{0}:{1}:{2}:{3}:{4}", stMember.UserName, stMember.UserPassword,

                      "", "", stMember.Email);

               SqlDataSource2.Insert();

           }

     }

}

      :

      :

protected void SqlDataSource2_Inserting(object sender, SqlDataSourceCommandEventArgs e)

{

 // INSERT INTO SlSecureWord(UserID, UserPassword, UserDisplayName, UserSort, [E-mail]) 

           VALUES (@UserID, @UserPassword, @UserDisplayName, @UserSort, @Email)



    string mem = (string)Session["SetteiUsermeiData"];

    string[] md = mem.Split(':');



    e.Command.Parameters["@UserID"].Value = md[0];

    e.Command.Parameters["@UserPassword"].Value = md[1];

    e.Command.Parameters["@UserDisplayName"].Value = md[2];

    e.Command.Parameters["@UserSort"].Value = md[3];

    e.Command.Parameters["@Email"].Value = md[4];

}



protected void SqlDataSource2_Updating(object sender, SqlDataSourceCommandEventArgs e)

{

// UPDATE SlSecureWord SET UserPassword = @UserPassword, UserDisplayName = @UserDisplayName,

          UserSort = @UserSort, [E-mail] = @Email WHERE (UserID = @UserID)



     string mem = (string)Session["SetteiUsermeiData"];

     string[] md = mem.Split(':');



     e.Command.Parameters["@UserID"].Value = md[0];

     e.Command.Parameters["@UserPassword"].Value = md[1];

     e.Command.Parameters["@UserDisplayName"].Value = md[2];

     e.Command.Parameters["@UserSort"].Value = md[3];

     e.Command.Parameters["@Email"].Value = md[4];

}