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); } }
public virtual QueryableFilterUserControl CreateFilterControl(MetaColumn column, string filterUIHint) { if (column == null) { throw new ArgumentNullException("column"); } string filterTemplatePath = GetFilterVirtualPathWithCaching(column, filterUIHint); Debug.Assert(filterTemplatePath != null); QueryableFilterUserControl filter = (QueryableFilterUserControl)BuildManager.CreateInstanceFromVirtualPath( filterTemplatePath, typeof(QueryableFilterUserControl)); return(filter); }