wpf staticresource 是不允许向前引用(forward reference)的

不允许向前引用(forward reference)在C/C++中中很常见,即在语法上,未定义变量、类之前,不能使用。

没想到wpf中的wpf staticresource也遵循这种规则。资源字典中,进行引用时,要主要了。

详见MSDN:https://msdn.microsoft.com/en-gb/library/cc189045(v=vs.95).aspx

 Important Note:

StaticResource must not attempt to make a forward reference to a resource that is defined lexically further within the XAML file. Attempting to do so is not supported, and even if such a reference does not fail, attempting the forward reference incurs a load-time performance penalty when the internal hash tables representing a ResourceDictionary are searched. For best results, adjust the composition of your resource dictionaries such that forward references can be avoided.

 

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