如何在DataGrid列标题上设置DataContext [英] How to set the DataContext on a DataGrid Column Header

问题描述

在我的 Silverlight 3 用户控件中，我显示了一个基本的 DataGrid 控件。我需要以编程方式生成列，如下所示：

In my Silverlight 3 user control I am showing a basic DataGrid control. I need to generate the columns programmatically as follows:

Style headerStyle = (Style)Resources["ColumnHeaderStyle"];
DataGridTextColumn col = new DataGridTextColumn();
col.HeaderStyle = headerStyle;
dataGrid.Columns.Add(col);

风格定义如下：

<Style x:Name="ColumnStyle" x:Key="ColumnHeaderStyle" 
       TargetType="prim:DataGridColumnHeader">
    <Setter Property="ContentTemplate">
        <Setter.Value>
            <DataTemplate>
                <StackPanel Loaded="StackPanel_Loaded">
                    <TextBlock Text="{Binding Name}" />
                    <TextBlock Text="{Binding Data}" />
                </StackPanel>
            </DataTemplate>
        </Setter.Value>
    </Setter>
</Style>

我想将标题的数据上下文设置为header对象（具有DataTemplate中引用的Name和Data属性）。不幸的是，我不能像建议的其他地方使用StackPanel_Loaded事件，因为事件当用户启动列拖放操作时，也会调用处理程序。

I want to set the data context of the header to a "header" object (with "Name" and "Data" properties which are referenced in the DataTemplate). Unfortunately, I cannot use the StackPanel_Loaded event as suggested elsewhere, because the event handler is also called when the user starts a column drag&drop operation.

设置DataGrid列标题的DataContext的正确方法是什么？

What is the correct way of setting the DataContext of a DataGrid column header?

推荐答案

结果可以使用头文件属性（其类型为Object）作为 DataContext DataTemplate （设置如上所示）：

Turns out that one can use the Header property (which is of type Object) as the DataContext for the DataTemplate (set as shown above):

Style headerStyle = (Style)Resources["ColumnHeaderStyle"];
DataGridTextColumn col = new DataGridTextColumn();
col.HeaderStyle = headerStyle;
col.Header = myHeaderDataContext; // DataContext for ColumnHeaderStyle
dataGrid.Columns.Add(col);

这篇关于如何在DataGrid列标题上设置DataContext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！