[WPF]使用C#代码实现DataTemplate

不得不说DataTemplate是WPF中的一项重要技术组成，可以方便让我们实现各种各样的UI样式，大大丰富了应用程序的界面设计。

通常我们都会在XAML文件中定义出具体的DataTemplate, 我举一个ListView的例子：

Code <ListView IsSynchronizedWithCurrentItem="True" Background="#FFFFFFFF" Foreground="White" ItemsSource="{Binding}" Style="{DynamicResource SuperListViewStyle}" ItemContainerStyleSelector="{StaticResource listViewItemStyleSelector}" x:Name="lvExecutionTable" >                         <ListView.View>                             <GridView>                                 <GridViewColumn>                                     <GridViewColumn.CellTemplate>                                         <DataTemplate>                                             <CheckBox HorizontalAlignment="Center" IsChecked="{Binding Path=IsSelected}"/>                                         </DataTemplate>                                     </GridViewColumn.CellTemplate>                                     <GridViewColumnHeader Content="选择" Tag="IsSelected"/>                                 </GridViewColumn>                                 <GridViewColumn>                                     <GridViewColumn.CellTemplate>                                         <DataTemplate>                                             <TextBlock Text="{Binding Path=IsComfirmed, Converter={StaticResource IsComfirmedConverter}}" Foreground="{Binding Path=IsComfirmed, Converter={StaticResource IsComfirmedToColorConverter}}"/>                                         </DataTemplate>                                     </GridViewColumn.CellTemplate>                                     <GridViewColumnHeader Content="确认状态" Tag="IsComfirmed"/>                                 </GridViewColumn>                                 <GridViewColumn DisplayMemberBinding="{Binding Path=MarketIndicator}">                                     <GridViewColumnHeader Content="市场类型" Tag="MarketIndicator"/>                                 </GridViewColumn>                                 <GridViewColumn>                                     <GridViewColumn.CellTemplate>                                         <DataTemplate>                                             <TextBlock Text="{Binding Path=TradeType}"/>                                         </DataTemplate>                                     </GridViewColumn.CellTemplate>                                     <GridViewColumnHeader Content="成交方式" Tag="TradeType"/>                                 </GridViewColumn>                             </GridView>                         </ListView.View>                     </ListView

Code

例子中对每个Column定义了简单的DataTemplate。

我遇到的问题是如果这个List View需要动态编辑列，或者新加入一些列，就是如何用代码来实现对控件的DataTemplate的操作。

经过查阅MSDN的相关文档，最好找到了解决的办法，如下：

Code             GridViewColumn column = new GridViewColumn();             GridViewColumnHeader h = new GridViewColumnHeader();             h.Content = "??????";             h.Tag = "*******";             column.Header = h;             DataTemplate dt = new DataTemplate();             FrameworkElementFactory fef = new FrameworkElementFactory(typeof(CheckBox));             Binding binding = new Binding();             binding.Path = new PropertyPath("MarketIndicator");             fef.SetBinding(CheckBox.ContentProperty, binding);             fef.SetValue(CheckBox.ForegroundProperty, Brushes.White);             dt.VisualTree = fef;             column.CellTemplate = dt;             (this.lvExecutionTable.View as GridView).Columns.Add(column);

DataTemplate对象的VisualTree属性的类型是FrameworkElementFactory，用来存放具体的Control。FrameworkElementFactory fef = new FrameworkElementFactory(typeof(CheckBox))语句定义了DataTemplate的顶层元素是一个CheckBox控件，使用fef.SetValue方法可以设置顶层元素的属性，如绑定等等。如果你需要定义的DataTemplate不止一个层次，那么你就要花点时间去设置顶层元素的Content属性。

问题解决，如果大家有更好的办法或者建议请联系我，谢谢！

转载于:https://www.cnblogs.com/chenlhuaf/archive/2009/02/11/1388426.html

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