如何在代码中绑定WPF网格列宽？

Question

在WPF中,我有一个定义了多个列的Grid,每列的宽度都绑定到DataGrid列的宽度,如下所示:

<Grid.ColumnDefinitions>
   <ColumnDefinition Width="{Binding ElementName=dataGrid, Path=RowHeaderWidth}" />
   <ColumnDefinition Width="{Binding ElementName=Column0, Path=ActualWidth}" />
   <ColumnDefinition Width="{Binding ElementName=Column1, Path=ActualWidth}" />
   Etc.

<Controls:DataGrid BorderBrush="White"  ItemsSource="{Binding DataTable}"  
                   Name="datagrid1" Grid.Row="2" RowHeaderWidth="0">

    <Controls:DataGrid.Columns>
    <Controls:DataGridTextColumn  Header="Included"  Width="50" x:Name="Column0" />
    <Controls:DataGridTextColumn  Header="First" Width="100" x:Name="Column1" />
     Etc.

当我运行程序并手动调整列的大小时,我可以看到Grid列的大小调整(ShowGridLines = true)和绑定到特定Grid列的元素相应地移动.

但是,当我尝试在代码中添加数据网格和Grid列时,我无法使绑定工作(没有绑定错误).这是一个例子:

 binding = new Binding()
 {
    Source = dataGrid.Columns[col],
    Path = new PropertyPath("ActualWidth"),
    Mode = BindingMode.OneWay, 
 };

 colDef.SetBinding(WidthProperty, binding);

我尝试了其他变体(例如ElementName ="DataGridColumn1",Path = new PropertyPath("ActualWidth")但是没有错误(没有绑定)或'找不到绑定源'错误或BindingExpression路径错误.

必须有一种方法来设置代码中的绑定...？

Answer 1

我找到了答案.这一行:

 colDef.SetBinding(WidthProperty, binding);

应改为:

 colDef.SetBinding(ColumnDefinition.WidthProperty, binding);