/// <summary>
/// Raises the <see cref="Selecting"/> event.
/// </summary>
/// <param name="args">The <see cref="NIntegrate.Web.EventArgs.DataSourceSelectingEventArgs"/> instance containing the event data.</param>
internal void OnSelecting(DataSourceSelectingEventArgs args)
{
if (Selecting != null)
{
Selecting(this, args);
}
}
protected override IEnumerable ExecuteSelect(DataSourceSelectArguments arguments)
{
if (_owner.Criteria == null)
{
throw new ArgumentException("Missing QueryTableType or Criteria setting on QueryDataSource");
}
var adjustedParameterValues = _owner.CriteriaParameters.GetValues(HttpContext.Current, _owner);
var en = adjustedParameterValues.GetEnumerator();
while (en.MoveNext())
{
_owner.Criteria.UpdateIdentifiedParameterValue(en.Key.ToString(), en.Value);
}
var selectingArgs = new DataSourceSelectingEventArgs(_owner.Criteria, adjustedParameterValues);
_owner.OnSelecting(selectingArgs);
if (selectingArgs.Cancel)
{
return(selectingArgs.Result != null ? new DataView(selectingArgs.Result) : null);
}
var criteria = _owner.Criteria.Clone();
if (arguments != null && arguments != DataSourceSelectArguments.Empty)
{
//adjust criteria according to arguments
if (arguments.RetrieveTotalRowCount)
{
arguments.TotalRowCount = _owner.QueryService.Execute(criteria, true);
_owner.LastTotalCount = arguments.TotalRowCount;
}
if (arguments.MaximumRows > 0)
{
criteria.SetMaxResults(arguments.MaximumRows);
}
if (arguments.StartRowIndex > 0)
{
criteria.SetSkipResults(arguments.StartRowIndex);
}
if (!string.IsNullOrEmpty(arguments.SortExpression))
{
if (_owner.AlwaysAppendDefaultSortBysWhenSorting)
{
InsertSortExpressinAtTopOfSortBys(arguments.SortExpression, criteria);
}
else
{
criteria.SortBys.Clear();
AppendSortExpression(criteria, arguments.SortExpression);
}
}
}
var result = _owner.QueryService.Query(criteria);
_owner.OnSelected(new DataSourceSelectedEventArgs(result));
return(new DataView(result));
}
protected void jdsrefFirstDictionary_Selecting(object sender, DataSourceSelectingEventArgs e)
{
var parameters = new BrowseFilterParameters();
GetBrowseFilterParameters_refFirstDictionary(parameters, _gridColumns);
// todo: реализовать передачу SelectParameters
// jdsrefFirstDictionary.BaseView.SelectParameters = Get_refFirstDictionarySelectParameters();
var control =
jdsrefFirstDictionary.BaseView.CreateDefaultFilter(
"SampleDictionaries.UserControls.DIC_MyFirstDictionaryFilter",
"DIC_MyFirstDictionary",
"none",
null,
parameters,
e.DB);
e.FilterControl = control;
}
protected void Source_Selecting(object sender, DataSourceSelectingEventArgs e)
{
e.FilterControl = GetFilterControl((DBDataContext)e.DB);
}
