C# Graphic.RefreshRow方法代码示例

		public void RefreshRow(Graphic graphic)
		{
#if SILVERLIGHT
			int idx = GetGraphicIndexInGraphicsCollection(graphic);
			IList gridRows = ItemsSource.AsList();
			if (idx > -1 && idx < gridRows.Count)
			{
				try
				{
					// In Silverlight refreshing a row corresponding to a graphic causes to lose current selection.
					// Preserving index of currently selected items in the FeatureDataGrid:
					int selCount = SelectedItems.Count;
					int[] selIndexes = new int[selCount];
					for (int i = 0; i < selCount; i++)
						selIndexes[i] = GetRowIndexInRowsCollection(SelectedItems[i]);
					// Unsubscribe from PagedCollectionView CollectionChanged event to perform a manual source 
					// collection update:
					(ItemsSource as PagedCollectionView).CollectionChanged -= PagedCollectionView_CollectionChanged;
					graphic.RefreshRow((ItemsSource as ICollectionView).SourceCollection, idx, objectType);
					gridRows = ItemsSource.AsList();	// Refresh needed as a row in the ItemsSource has changed
					// Subscribing back to the PagedCollectionView CollectionChanged event handler:
					(ItemsSource as PagedCollectionView).CollectionChanged += PagedCollectionView_CollectionChanged;
					// Restoring the selection stored before updating the row (Silverlight only):
					SelectedItems.Clear();
					for (int i = 0; i < selCount; i++)
						SelectedItems.Add(gridRows[selIndexes[i]]);
				}
				catch (Exception ex)
				{
					throw new ArgumentException(string.Format(Properties.Resources.FeatureDataGrid_RowUpdateFailed, idx.ToString()), ex);
				}
			}
#endif
		}