对于#1可以执行以下操作:
foreach (DataGridCellInfo cellInfo in dataGrid.SelectedCells)
{
DataGridCell gridCell = TryToFindGridCell(dataGrid, cellInfo);
if (gridCell != null && gridCell.Content is TextBlock)
Console.WriteLine(((TextBlock)gridCell.Content).Text);
}
下面
是TryToFindGridCell过程实现:
static DataGridCell TryToFindGridCell(DataGrid grid, DataGridCellInfo cellInfo)
{
DataGridCell result = null;
DataGridRow row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromItem(cellInfo.Item);
if (row != null)
{
int columnIndex = grid.Columns.IndexOf(cellInfo.Column);
if (columnIndex > -1)
{
DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(row);
result = presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex) as DataGridCell;
}
}
return result;
}
static T GetVisualChild<T>(Visual parent) where T : Visual
{
T child = default(T);
int numVisuals = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < numVisuals; i++)
{
Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);
child = v as T;
if (child == null) child = GetVisualChild<T>(v);
if (child != null) break;
}
return child;
}
#2:
a.line“对象物obj =新的对象() ;”不需要;
b.you可以将cmd.ExecuteScalar的结果转换为DateTime。在投射之前,你也想检查它不是null或DBNull;否则您可能会收到“指定的演员无效”例外。
希望这会有所帮助,关注