WPF DataGrid在单元格更改上立即更新 [英] WPF DataGrid immediate update on Cell Change

问题描述

我想让ViewModel在单元格的值更改时立即更新.现在必须等到焦点离开记录.

I would like to have the ViewModel updated immediately on change of value of a cell. Right now have to wait until focus leaves the record. Is there a XAML attribute I can set to cause immediate update?

推荐答案

尝试将Binding的UpdateSourceTrigger属性设置为PropertyChanged.默认值为LostFocus.

Try to set the UpdateSourceTrigger property of the Binding to PropertyChanged. The default is LostFocus.

<object UpdateSourceTrigger="UpdateSourceTrigger" .../>

请参考msdn以获取更多信息:
http://msdn.microsoft.com/en-us/library/system.windows.data.binding.updatesourcetrigger.aspx [ ^ ]

Please refer to msdn for further info:
http://msdn.microsoft.com/en-us/library/system.windows.data.binding.updatesourcetrigger.aspx[^]

了解此问题的最佳位置是http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/c71fe21a-6549 -4dcf-aee9-43d02e73194f [ ^ ].这是我的解决方案中的一些代码:

The best place to see about this problem is http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/c71fe21a-6549-4dcf-aee9-43d02e73194f[^]. Here is some of the code from my solution:

<datagrid>
   <datagrid.resources>
     <style x:key="TextBlockRightAlignStyle" xmlns:x="#unknown">
            TargetType="{x:Type TextBlock}">
       <setter property="TextAlignment">
               Value="Right" />
       <setter property="Padding">
               Value="5,0" />
       <setter property="VerticalAlignment">
               Value="Center" />
     </setter></setter></setter></style>
     <style x:key="TextBoxRightAlignStyle" xmlns:x="#unknown">
            TargetType="{x:Type TextBox}">
       <setter property="TextAlignment">
               Value="Right" />
       <setter property="Background">
               Value="Transparent" />
       <setter property="Padding">
               Value="5,0" />
       <setter property="VerticalAlignment">
               Value="Center" />
     </setter></setter></setter></setter></style>
   </datagrid.resources>
     <datagrid.columns>
     <datagridtextcolumn header="Amount">
           Binding="{Binding Amount, StringFormat={}{0:#\,###},
              UpdateSourceTrigger=LostFocus}"
           ElementStyle="{StaticResource TextBlockRightAlignStyle}"
           EditingElementStyle="{StaticResource TextBoxRightAlignStyle}"
           Width="130" />
   </datagridtextcolumn></datagrid.columns>
 </datagrid>

我包含了对齐内容，因为有人可能会觉得有用.

I included the alignment stuff since somebody may find it useful.

这可以100％

http://social.msdn.microsoft.com/Forums/en/wpf/thread/a814c74f-6fa0-48f7-a790-8e753da422a8

This works 100%

http://social.msdn.microsoft.com/Forums/en/wpf/thread/a814c74f-6fa0-48f7-a790-8e753da422a8

这篇关于WPF DataGrid在单元格更改上立即更新的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！