c# - 如何在WPF中禁用XamDataGrid单元格编辑

Question

我使用了xamdatagrid cellupdated事件，在该事件中，我必须在编辑中禁用特定的单元格，并希望在获得API调用的响应后启用它，问题是当我在禁用它后启用该单元格时，光标不会在正确的位置。

private async void RenewDataGrid_OnCellUpdated(object sender, CellUpdatedEventArgs e)
{
    row.Cells[4].IsEnabled = false;
    await datacontext.CalculateFdtotalAmount();
    row.Cells[4].IsEnabled = true;
}

Answer 1

在函数调用中，XamDataGrid存在类似类型的问题。我通过处理类似于旧Windows PeekMessage的语句解决了该问题。为此，请尝试以下操作:

private async void RenewDataGrid_OnCellUpdated(object sender, CellUpdatedEventArgs e)
{
    row.Cells[4].IsEnabled = false;
    DoEvents();
    await datacontext.CalculateFdtotalAmount();
    DoEvents();
    row.Cells[4].IsEnabled = true;
}



    public object ExitFrame(object f)
    {
        ((DispatcherFrame)f).Continue = false;
        return null;
    }
    public void DoEvents()
    {
        DispatcherFrame frame = new DispatcherFrame();
        Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background,
            new DispatcherOperationCallback(ExitFrame), frame);
        Dispatcher.PushFrame(frame);
    }