protected internal virtual void OnSelect(DataAccessLayerDataSourceEventArgs args)
{
if (Select != null)
{
Select(this, args);
}
}
protected override IEnumerable ExecuteSelect(DataSourceSelectArguments arguments)
{
DataAccessLayerDataSourceEventArgs eventArgs = new DataAccessLayerDataSourceEventArgs();
_owner.OnSelect(eventArgs);
if (eventArgs.QueryCommand == null)
{
eventArgs.QueryCommand = new SqlCommand("select null as ColumnName");
arguments.TotalRowCount = 0;
return(new DataTable().AsEnumerable());
}
SqlConnection conn = (SqlConnection)_owner.CreateDataManager()._db.Connection;
eventArgs.QueryCommand.Connection = conn;
conn.Open();
if (eventArgs.QueryCommand.CommandText.Trim().ToUpper().StartsWith("SELECT"))
{
SqlCommand cmdRecordCount = eventArgs.QueryCommand.Clone();
cmdRecordCount.CommandText = "select Count(*) as RecordCount " + cmdRecordCount.CommandText.Substring(cmdRecordCount.CommandText.ToUpper().IndexOf("FROM"));
arguments.TotalRowCount = (int)cmdRecordCount.ExecuteScalar();
}
else
{
arguments.TotalRowCount = 1;
}
SqlDataAdapter da = new SqlDataAdapter(eventArgs.QueryCommand);
DataSet result = new DataSet();
if (arguments.MaximumRows > 0 && arguments.StartRowIndex >= 0)
{
da.Fill(result, arguments.StartRowIndex, arguments.MaximumRows, "Table");
}
else
{
da.Fill(result);
}
return(result.Tables[0].AsEnumerable());
}