WPF编程创建树状的ItemTemplate /列 [英] WPF Programmatically create treeview itemtemplate/columns

问题描述

我有读取数据库表，并把它变成一个树状的应用程序。为树视图当前的ItemTemplate看起来是这样的：

<预类=郎咸平的XML prettyprint-覆盖> < ; TreeView.ItemTemplate>
< HierarchicalDataTemplate的ItemsSource ={结合SubOrganLocations}>
<网格和GT;
< Grid.ColumnDefinitions>
< ColumnDefinition WIDTH =*/>
< ColumnDefinition WIDTH =35/>
< ColumnDefinition WIDTH =35/>
< ColumnDefinition WIDTH =35/>
< /Grid.ColumnDefinitions>
< TextBlock的Grid.Column =0文本={结合OrganDisplayName}/>
<文本框Grid.Column =1IsEnabled =真/>
<文本框Grid.Column =2IsEnabled =真/>
<文本框Grid.Column =3IsEnabled =真/>
< /网格和GT;
< / HierarchicalDataTemplate>
< /TreeView.ItemTemplate>


但是，在将来有可能是需要添加更多的列（由数确定在表中不同的值），所以我试图动态地创建它。 ？我将如何去这样做。

解决方案

这样的事情是可能的：

 < TreeView.ItemTemplate> 
< HierarchicalDataTemplate的ItemsSource ={结合SubOrganLocations}> 
< StackPanel的方向=横向> 
< TextBlock的文本={结合OrganDisplayName}/> ！
 
<  - 如果字段绑定到可通过收集暴露：
<的ItemsControl的ItemsSource ={绑定字段}> - > 
<的ItemsControl的ItemsSource ={结合，转换器= {StaticResource的SomeCleverConverter}}> 
< ItemsControl.ItemsPanel> 
< ItemsPanelTemplate> 
< StackPanel的方向=横向/> 
< / ItemsPanelTemplate> 
< /ItemsControl.ItemsPanel> 
< ItemsControl.ItemTemplate> 
<&DataTemplate的GT; 
<文本框的文本={绑定值}WIDTH =35/> 
< / DataTemplate中> 
< /ItemsControl.ItemTemplate> 
< / ItemsControl的> 
 
< / StackPanel的> 
< / HierarchicalDataTemplate> 
< /TreeView.ItemTemplate> 
  

这取决于如果树型视图的DataContext的（该SubOrganLocation）可以公开字段的集合，或至少使用具有转换器来导出他们。最简单，最简单的可能会暴露领域的集合，所以你可以做 {绑定字段} 。

I have an application that reads database tables and puts it into a treeview. The current ItemTemplate for the treeview looks like this:

<TreeView.ItemTemplate>
    <HierarchicalDataTemplate ItemsSource="{Binding SubOrganLocations}">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="35" />
                <ColumnDefinition Width="35" />
                <ColumnDefinition Width="35" />
            </Grid.ColumnDefinitions>
            <TextBlock Grid.Column="0" Text="{Binding OrganDisplayName}" />
            <TextBox Grid.Column="1" IsEnabled="True" />
            <TextBox Grid.Column="2" IsEnabled="True" />
            <TextBox Grid.Column="3" IsEnabled="True" />
        </Grid>
    </HierarchicalDataTemplate>
</TreeView.ItemTemplate>

However, in the future there could be more columns that need to be added (determined by the number of distinct values in a table), so I'm trying to create it dynamically. How would I go about doing that?

解决方案

Something like this might be possible:

<TreeView.ItemTemplate>
    <HierarchicalDataTemplate ItemsSource="{Binding SubOrganLocations}">
        <StackPanel Orientation="Horizontal">
                <TextBlock Text="{Binding OrganDisplayName}" />

                <!-- If the fields to bind to can be exposed via a collection:
                <ItemsControl ItemsSource="{Binding Fields}"> -->
                <ItemsControl ItemsSource="{Binding, Converter={StaticResource SomeCleverConverter}}">
                    <ItemsControl.ItemsPanel>
                        <ItemsPanelTemplate>
                            <StackPanel Orientation="Horizontal" />
                        </ItemsPanelTemplate>
                    </ItemsControl.ItemsPanel>
                    <ItemsControl.ItemTemplate>
                        <DataTemplate>
                            <TextBox Text="{Binding Value}" Width="35" />
                        </DataTemplate>
                    </ItemsControl.ItemTemplate>
                </ItemsControl>

            </StackPanel>
    </HierarchicalDataTemplate>
</TreeView.ItemTemplate>

It depends if the DataContext of the TreeViewItem (the SubOrganLocation) can expose a collection of fields, or at least be used to derive them with a converter. The simplest and probably easiest would be to expose a collection of fields so you can just do {Binding Fields}.

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