private void EnsureInit(IQueryableDataSource dataSource)
{
if (_filterUserControl == null)
{
MetaTable table = DynamicDataExtensions.GetMetaTable(dataSource, Context);
Column = table.GetColumn(DataField);
_filterUserControl = _filterLoader(Column, FilterUIHint);
_filterUserControl.Initialize(Column, dataSource, Context);
_filterUserControl.FilterChanged += new EventHandler(Child_FilterChanged);
Controls.Add(_filterUserControl);
}
}
internal void Page_InitComplete(object sender, EventArgs e)
{
if (_initialized)
{
return;
}
Debug.Assert(_dataSource != null);
MetaTable table = DynamicDataExtensions.GetMetaTable(_dataSource, Context);
int itemIndex = 0;
foreach (MetaColumn column in table.GetFilteredColumns())
{
FilterRepeaterItem item = new FilterRepeaterItem()
{
DataItemIndex = itemIndex, DisplayIndex = itemIndex
};
itemIndex++;
ItemTemplate.InstantiateIn(item);
Controls.Add(item);
DynamicFilter filter = item.FindControl(DynamicFilterContainerId) as DynamicFilter;
if (filter == null)
{
throw new InvalidOperationException(
String.Format(CultureInfo.CurrentCulture,
DynamicDataResources.FilterRepeater_CouldNotFindControlInTemplate,
ID,
typeof(QueryableFilterUserControl).FullName,
DynamicFilterContainerId));
}
filter.Context = Context; // needed for unit testing
filter.DataField = column.Name;
item.DataItem = column;
item.DataBind();
item.DataItem = null;
// Keep track of all the filters we create
_filters.Add(filter);
}
_filters.ForEach(f => f.Initialize(_dataSource));
_initialized = true;
}