wpf无法加载程序集的元数据 可能已从web下载--解决办法！

wpf无法加载程序集的元数据 可能已从web下载--解决办法！

(2014-01-13 14:59:02)

最近遇到了一个问题，自己在笔记本上写的一个wpf程序，源代码放到别的电脑上，设计器加载就会出现问题，网上查了好久，最终还是在微软官网上找到了结局方案：以下就是解决方案，只需要对你所引用或者额外加载的dll文件进行“接触锁定”操作就行了。 

解除锁定步骤：找到你的dll->右键属性->通用选项卡->解除锁定即可。

This topic shows how to use an assembly that you download from the Web in Visual Studio. For security reasons, Visual Studio blocks you from loading a Web assembly in the Choose Items and Add
Reference dialog boxes.

Caution
Unblocking an assembly that is downloaded from the Web gives it Full Trust. Only unblock assemblies that you trust.

Unblocking
a Web Assembly

To unblock a Web assembly

Close Visual Studio.

Using Windows Explorer, browse to the assembly that you downloaded from the Web.

Right-click the assembly, and from the shortcut menu, select Properties.

The Properties dialog box opens.

On the General tab, click the Unblock button to indicate that this assembly is trusted

Note
The Unblock button will not appear if the assembly is already unblocked and available.

Click OK to close the Properties dialog box.

Restart Visual Studio and open your project.

You should now be able to browse to the assembly in the Choose Items or Add Reference dialog boxes.