如何在代码中绑定WPF网格列宽?

时间:2009-05-27 23:28:44

标签: wpf binding grid

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

必须有办法在代码中设置绑定...?

3 个答案:

答案 0 :(得分:6)

我找到了答案。这一行:

 colDef.SetBinding(WidthProperty, binding);

应更改为:

 colDef.SetBinding(ColumnDefinition.WidthProperty, binding);

答案 1 :(得分:0)

DataGridTextColumn textColumn = new DataGridTextColumn();
textColumn.Width = DataGridLength.SizeToHeader;

Google DataGridLength获取其他选项....

答案 2 :(得分:0)

在我的项目中我喜欢这样 - 认为值得一提,因为在我得到它之前我遇到了很多问题:

    DataGridTextColumn c = new DataGridTextColumn
    {
          // Binding to my value (not directly related to the question)
          Binding = new Binding
          {
               Path = new PropertyPath(cd.Title + ".Value"),
               Mode = BindingMode.TwoWay
          }
     };

     // Binding the width 
     BindingOperations.SetBinding(c, DataGridTextColumn.WidthProperty, new Binding
     {
           Source = cd,                        // An INotifying object
           Path = new PropertyPath("Width"),   // A Property of that object
           Mode = BindingMode.TwoWay
      });