WPF-通过DataContext绑定 [英] WPF - binding via DataContext

问题描述

我是WPF的一名新手.

我正在尝试绑定.

基本上，我在XAML文件的构造函数中设置了DataContext.

基本上，我创建一个.xaml表单，并通过在< textbox>之间添加以下内容来设置XAML中的Textbox绑定.标签:

Text ="{Binding Path = someProperty}"


加载表单时，在文本框中看到"someProperty"的值.

没问题.

如果"someProperty"不存在，则不会标记任何错误.

如果找不到该属性，是否有生成错误的方法?

I am a complete newbie to WPF.

I am experimenting with binding.

Basically I set the DataContext in the constructor of the XAML file

Basically I create a .xaml form and set a Textbox binding in XAML by adding the following between the <textbox> tag:

Text="{Binding Path=someProperty}"


When I load the form up, I see the value of "someProperty" in the textbox.

No problem.

If "someProperty" doesn''t exist, no error is flagged.

Is there a way to generate an error if the property cannot be found?

推荐答案

数据绑定错误将像输出"窗口中的警告一样引发.您可以在Visual Studio中打开输出"窗口，然后检查错误.

此处 [ XAML DataBinding中的调试技巧 [ ^ ]

如果有帮助，请将其标记为答案"

The Data Binding errors will be thrown like warning in the Output Window. You can open the Output Window in Visual Studio and check the error.

Here[^] is another example to listen these error.

or you can try Debugging Trick in XAML DataBinding[^] too

Mark it as Answer if it is helpful

您可以通过绑定来控制验证-请参见 ^ ].

You can control validations with binding - see here[^].

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