Muszę przynieśćscope_identity() wartość z procedury przechowywanej po wstawieniu danych w kodzie C #.

Tutaj używam architektury trójwarstwowej. Proszę, pomóż mi

protected void Submit_Click(object sender, EventArgs e)
{
    this.CreateUserGroups(strGroupName, strDescription, strGroupType);
}

protected void CreateUserGroups(string strGroupName, string strDescription, string strGroupType)
{
    string strReturn = string.Empty;
    strReturn = objUser.SaveCreateGroups(strGroupName, strDescription, strGroupType);
}

public string SaveCreateGroups(string strGroupName, string strDescription, string strGroupType)
{
    try
    {
        DataManager.ParamBuilder param = new DataManager.ParamBuilder();
        if (strGroupName != string.Empty)
            param.AddParam(System.Data.SqlDbType.VarChar, "@c_groupname", strGroupName);
        else
            param.AddParam(System.Data.SqlDbType.Int, "@c_groupname", DBNull.Value);

        if (strDescription != string.Empty)
            param.AddParam(System.Data.SqlDbType.VarChar, "@c_description", strDescription);
        else
            param.AddParam(System.Data.SqlDbType.Int, "@c_description", DBNull.Value);

        if (strGroupType != string.Empty)
            param.AddParam(System.Data.SqlDbType.Int, "@n_grouptype", strGroupType);
        else
            param.AddParam(System.Data.SqlDbType.VarChar, "@n_grouptype", DBNull.Value);


        String strIsUserExitsInGroup = DataManager.ExecuteScalar("sp_create_user_groups", param.Parameters, true).ToString();

        return strIsUserExitsInGroup;
    }
    catch (Exception e)
    {
        throw new Exception(e.ToString());
    }
}

public static object ExecuteScalar(string procedureNameOrSql, List<SqlParameter> parameters, bool isStoredProcedure)
{
    object scalarValue;
    using (SqlConnection cn = createConnection())
    {
        SqlCommand cmd = new SqlCommand(procedureNameOrSql, cn);
        if (isStoredProcedure)
            cmd.CommandType = CommandType.StoredProcedure;
        if (parameters != null)
            cmd.Parameters.AddRange(parameters.ToArray());
        scalarValue = cmd.ExecuteScalar();
    }
    return scalarValue;
}

Moja procedura składowana:

CREATE Procedure [dbo].[sp_create_user_groups]
  @n_user_group_id int OUTPUT,
  @c_groupname varchar(200),
  @c_description varchar(200),
  @n_grouptype int
As
   Declare @IsGroupNameExists int,        
           @b_active bit

   select @IsGroupNameExists = 0
   set @b_active = 1

BEGIN
IF exists(select top 1 * from gdt_user_groups where c_group_name = @c_groupname)
BEGIN
 select @IsGroupNameExists = 1
END
ELSE
 BEGIN
    SET NOCOUNT ON;
    insert into gdt_user_groups(c_group_name,c_description,n_group_id,b_active,d_modified_dttm,
    d_created_dttm)values(@c_groupname,@c_description,@n_grouptype,@b_active,GETDATE(),GETDATE())
    select @n_user_group_id = SCOPE_IDENTITY();
    select @IsGroupNameExists = 0
 END 

 select @IsGroupNameExists
 END

Tutaj dokładnie mogę pobrać wartość scope_identity w kodzie C #. Czy ktoś pomaga?