internal void OnSelected(object sender, DalcDataSourceSelectEventArgs e)
{
if (Selected != null)
{
Selected(sender, e);
}
}
public Query GetSelectQuery(string viewName)
{
Query q = new Query(viewName == TableName ? SelectTableName : viewName);
q.Condition = Condition;
DataSourceSelectArguments selectArgs = new DataSourceSelectArguments();
DataSet ds = DataSetFactory.GetDataSet(viewName);
DalcDataSourceSelectEventArgs eArgs = new DalcDataSourceSelectEventArgs(q, selectArgs, ds);
// raise event
OnSelecting(this, eArgs);
return(q);
}
protected override IEnumerable ExecuteSelect(DataSourceSelectArguments arguments)
{
Query q = new Query(Name == DataSource.TableName ? DataSource.SelectTableName : Name);
q.Condition = DataSource.Condition;
if (!String.IsNullOrEmpty(arguments.SortExpression))
{
q.Sort = arguments.SortExpression.Split(',').Select(v => (QSort)v).ToArray();
}
DataSet ds = GetDataSet();
DalcDataSourceSelectEventArgs eArgs = new DalcDataSourceSelectEventArgs(q, arguments, ds);
// raise event
DataSource.OnSelecting(DataSource, eArgs);
if (eArgs.Cancel)
{
return(null);
}
if (arguments.RetrieveTotalRowCount)
{
arguments.TotalRowCount = DataSource.Dalc.RecordsCount(q);
}
q.StartRecord = arguments.StartRowIndex;
if (arguments.MaximumRows > 0)
{
q.RecordCount = arguments.MaximumRows;
}
if (q.RecordCount > 0)
{
DataSource.Dalc.Load(q, ds);
}
// raise event
DataSource.OnSelected(DataSource, eArgs);
return(ds.Tables[q.Table].DefaultView);
}