C# 在 XAML 中设置 <Window.DataContext>
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Setting <Window.DataContext> in XAML
提问by David Beck
I followed a very simple MVVM example as a basis for my program. The author had one code behind instruction he used in the main page to set the DataContext. I'm thinking I should be able to do this in the XAML instead. The MainWindowViewModel is in a directory ViewModels. The code behind works.
我遵循了一个非常简单的 MVVM 示例作为我程序的基础。作者在主页面中使用了一个代码隐藏指令来设置DataContext. 我想我应该能够在 XAML 中做到这一点。MainWindowViewModel 位于目录 ViewModels 中。背后的代码有效。
namespace RDLfromSP
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = new ViewModels.MainWindowViewModel();
}
}
}
I can't seem to find the right combo to set it instead in the XAML
我似乎无法在 XAML 中找到正确的组合来设置它
<Window x:Class="RDLfromSP.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="300" Width="300" >
<Window.DataContext>
<local:ViewModels.MainWindowViewModel />
</Window.DataContext>
Thanks in advance for your help
在此先感谢您的帮助
回答by Reed Copsey
You'll need an xml namespace mapping to the ViewModelsnamespace. Once you add that, it would be:
您将需要一个映射到ViewModels命名空间的 xml 命名空间。添加后，它将是：
<Window.DataContext>
<vms:MainWindowViewModel />
</Window.DataContext>
(This is assuming you map vmsto the appropriate namespace.)
（这是假设您映射vms到适当的命名空间。）
This should look just like your current namespace mapping for local:, but called vms:with the appropriate namespace specified.
这应该看起来就像您当前的命名空间映射local:，但vms:使用指定的适当命名空间进行调用。
