private static object ResetNewItemTemplate(object obj)
{
DataGridControl datagrid = obj as DataGridControl;
if (null == datagrid)
{
return(null);
}
// Get the row for CollectionView.NewItemPlaceholder
DataGridRow row = datagrid.GetRow(CollectionView.NewItemPlaceholder);
if (null == row)
{
return(null);
}
// Ensure it's template is correct
ControlTemplate template = GetTemplate(datagrid);
if (null == template)
{
template = GetDefaultTemplate(datagrid);
}
if (row.Template != template)
{
row.Template = template;
row.UpdateLayout();
}
return(null);
}
/// <summary>
/// Gets the <c>DataGridRow</c> for the specified item.
/// </summary>
/// <param name="dataGrid">The <c>DataGrid</c>.</param>
/// <param name="item">The item.</param>
/// <returns>The <c>DataGridRow</c> for the specified item.</returns>
public static DataGridRow GetRow(this DataGridControl dataGrid, object item)
{
if (dataGrid == null)
{
throw new ArgumentNullException("dataGrid");
}
int index = dataGrid.Items.IndexOf(item);
// 3/23/2010 - Ensure index is valid (http://www.actiprosoftware.com/Support/Forums/ViewForumTopic.aspx?ForumTopicID=4710#17370)
return((index != -1) ? dataGrid.GetRow(index) : null);
}
/// <summary>
/// 获取DataGrid控件单元格
/// </summary>
/// <param name="dataGrid">DataGrid控件</param>
/// <param name="rowIndex">单元格所在的行号</param>
/// <param name="columnIndex">单元格所在的列号</param>
/// <returns>指定的单元格</returns>
public static DataGridCell GetCell(this DataGrid dataGrid, int rowIndex, int columnIndex)
{
DataGridRow rowContainer = dataGrid.GetRow(rowIndex);
if (rowContainer != null)
{
DataGridCellsPresenter presenter = GetVisualChild <DataGridCellsPresenter>(rowContainer);
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
if (cell == null)
{
dataGrid.ScrollIntoView(rowContainer, dataGrid.Columns[columnIndex]);
cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
}
return(cell);
}
return(null);
}