wpf 命名空间“System.Windows”中不存在类型或命名空间名称“Window”

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时间:2020-09-13 10:45:36  来源:igfitidea点击:

The type or namespace name 'Window' does not exist in the namespace 'System.Windows'

c#wpfnamespacesextension-methods

提问by JoeMjr2

I am trying to write an extension method for the WPF Window class. I am doing it in a class library project in my solution, so that I can use it in all my projects in the solution.

我正在尝试为 WPF Window 类编写扩展方法。我在我的解决方案中的类库项目中执行此操作,以便我可以在解决方案中的所有项目中使用它。

Here is my code:

这是我的代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace ExtensionMethods
{
    public static class MyExtensions
    {
        public static void ResizeToPrimaryScreenWorkingArea(this System.Windows.Window w)
        { 
        }
    }
}

When I try to compile this, I get the following error:

当我尝试编译它时,出现以下错误:

The type or namespace name 'Window' does not exist in the namespace 'System.Windows'

命名空间“System.Windows”中不存在类型或命名空间名称“Window”

Yes, I DID add references to System.Windows and System.Windows.Forms in my class library project, and they are showing under References in the project in Solution Explorer.

是的,我确实在我的类库项目中添加了对 System.Windows 和 System.Windows.Forms 的引用,它们显示在解决方案资源管理器中项目的引用下。

What am I doing wrong?

我究竟做错了什么?

回答by Carlos Landeras

Add PresentationFramework.dllreference to your project it contains the System.Windowsnamespace.

添加PresentationFramework.dll对包含System.Windows命名空间的项目的引用。

http://msdn.microsoft.com/es-es/library/system.windows.window(v=vs.110).aspx

http://msdn.microsoft.com/es-es/library/system.windows.window(v=vs.110).aspx