无法将DataTemplateSelector添加到wpf XAML

This is my first time ever doing anything with XAML and I'm a bit lost.

这是我第一次使用XAML做任何事情而且我有点失落。

I'm trying to add a DataTemplateSelector to my XAML page using the instructions found here. However I'm stuck on the part where I'm supposed to "declare the TaskListDataTemplateSelector as a resource". This is the example given:

我正在尝试使用此处的说明将DataTemplateSelector添加到我的XAML页面。但是我被困在我应该“将TaskListDataTemplateSelector声明为资源”的部分。这是给出的例子：

<Window.Resources>
     ...
     <local:TaskListDataTemplateSelector x:Key="myDataTemplateSelector"/>
     ...
</Window.Resources>

However, the top level tag in the XAML document is <UserControl>, and I don't see anything about Window or Window.Resources.

但是，XAML文档中的*标记是，我没有看到任何关于Window或Window.Resources的内容。

Under the <UserControl> tag is a <UserControl.Resources> tag, but when I try to put the example code there, it gives me an error saying "The namespace prefix 'local' is not defined". I tried replacing "local" with the actual namespace, but got the same error.

在标签下是一个标签，但是当我尝试将示例代码放在那里时，它给我一个错误，说“没有定义名称空间前缀'local'”。我尝试用实际命名空间替换“local”，但得到了同样的错误。

The custom DataTemplateSelector class is in the codebehind for the XAML page, and is in the same namespace.

自定义DataTemplateSelector类位于XAML页面的代码隐藏中，并且位于同一名称空间中。

1 个解决方案

#1

For anyone who googled this question like I did:

对于像我一样用谷歌搜索这个问题的人：

I think I found the answer.

我想我找到了答案。

You need to define the local prefix in your XAML file.
This can be done by placing the following namespace argument in the root element:

您需要在XAML文件中定义本地前缀。这可以通过在根元素中放置以下命名空间参数来完成：

   xmlns:local="clr-namespace:AssemblyName"

Change "AssemblyName" in your erm.. assembly's name.

在你的erm ..程序集的名称中更改“AssemblyName”。

#1