在wpf中进行数据绑定期间调用codebehind函数 [英] Call codebehind function during databinding in wpf

问题描述

你好朋友，



我是WPF的新手。目前我在WPF中创建DataGrid。



XAML代码：

 < DataGrid x：Name =DGMDStatusAutoGenerateColumns =FalseHeight =440Horizo​​ntalAlignment =LeftMargin =22,80,0,0VerticalAlignment =TopWidth =800BorderBrush =＃ FF000C21BorderThickness =0.5AlternatingRowremoved =＃fffHorizo​​ntalScrollBarVisibility =HiddenCanUserAddRows =FalseIsReadOnly =True> 
< DataGrid.Columns> 
< DataGridTextColumn Header =Status IdWidth =200Binding ={Binding StatusId}/> 
< DataGridTextColumn Header =StatusWidth =300Binding ={Binding Status}/> 
< /DataGrid.Columns> 
< / DataGrid> 

代码背后：

 DGMDStatus.ItemsSource = dbcon.sp_StatusMaster_SelectAll（）。ToList（）; 

那我该如何检查在后面的代码中进行数据绑定时，状态为空。

请帮帮我...谢谢。

解决方案

为此，您可以使用价值转换器。

Hello friends,

I am newbie in WPF. Currently i am creating DataGrid in WPF.

XAML CODE :

<DataGrid x:Name="DGMDStatus" AutoGenerateColumns="False" Height="440" HorizontalAlignment="Left" Margin="22,80,0,0" VerticalAlignment="Top" Width="800" BorderBrush="#FF000C21" BorderThickness="0.5" AlternatingRowremoved="#fff" HorizontalScrollBarVisibility="Hidden" CanUserAddRows="False" IsReadOnly="True">
	<DataGrid.Columns>
		<DataGridTextColumn Header="Status Id"  Width="200" Binding="{Binding StatusId}"/>
		<DataGridTextColumn Header="Status" Width="300" Binding="{Binding Status}"/>                       
	</DataGrid.Columns>
</DataGrid>

CODE BEHIND :

DGMDStatus.ItemsSource = dbcon.sp_StatusMaster_SelectAll().ToList();

So how can i check "Status" is null or not during databinding in code behind.
Please help me... Thanks.

解决方案

You can use a value-converter, for that purpose.

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