Question

我有以下DataTemplate：

<Window.Resources>
    <DataTemplate x:Key="MyDataGridCell_TextBox">
        <TextBlock Text="{Binding}" />
    </DataTemplate>
</Window.Resources>

我的DataGrid中的以下DataGridColumn：

<DataGrid ItemsSource="{Binding Logs}">
    <DataGrid.Columns>
        <DataGridTemplateColumn Header="A" CellTemplate="{StaticResource MyDataGridCell_TextBox} 
HOW_DO_I_SET_HERE_DisplayMember_To_PropA???"/> 
        <DataGridTemplateColumn Header="B" CellTemplate="{StaticResource MyDataGridCell_TextBox} 
HOW_DO_I_SET_HERE_DisplayMember_To_PropB???"/> 
    </DataGrid.Columns>
</DataGrid>

如何从DataGridTemplateColumn设置DataTemplate的DisplayMemberPath？

public class Log
{
    public string PropA {get;set;}
    public string PropB {get;set;}
}

Logs <=> ObservableCollection<Log>

PS：我删除了不相关的代码部分，如样式，一些道具等，并试图尽可能地简化代码。

Answer 1

<Window.Resources>
    <DataTemplate x:Key="MyDataGridCell_TextBoxA">
        <TextBlock Text="{Binding PropA}" />
    </DataTemplate>
    <DataTemplate x:Key="MyDataGridCell_TextBoxB">
        <TextBlock Text="{Binding PropB}" />
    </DataTemplate>
</Window.Resources>

如上所述定义2个模板，然后使用模板选择器

public class CellTextTemplateSelector : DataTemplateSelector
{
    public override DataTemplate SelectTemplate(object item, DependencyObject container)
    {
        ContentPresenter presenter = container as ContentPresenter;
        DataGridCell cell = presenter.Parent as DataGridCell;
        DataGridTemplateColumn it = cell.Column as DataGridTemplateColumn;
        if (it.Header == A)
        {
            //return logic depends on where you are adding this class
        }
        else
        {
            //return logic depends on where you are adding this class
        }

    }
}

然后添加您的资源：

<Window.Resources>
    <mypath:CellTextTemplateSelector x:Key = "mySelector"/>
    ...
</Window.Resources>

最后

<DataGrid ItemsSource="{Binding Logs}">
    <DataGrid.Columns>
        <DataGridTemplateColumn Header="A" CellTemplateSelector="{StaticResource mySelector}"/> 
        <DataGridTemplateColumn Header="B" CellTemplateSelector="{StaticResource mySelector}"/> 
    </DataGrid.Columns>
</DataGrid>

设置DataTemplate的DisplayMemberPath

1 个答案: