VB.NET项目属性命名空间vs Imports语句？

Question

在VB.NET项目中，在Project-Properties中导入命名空间和在文件开头使用Imports [NameSpace]语句之间有什么区别？

Answer 1

Imports in the project properties apply to all code files.

The Imports directive only applies to the class it is declared in.

From How to: Add or Remove Imported Namespaces (Visual Basic) on MSDN:

Imported namespaces are managed on the References page of the Project Designer. The imports you specify in this dialog box are passed directly to the compiler (/imports) and apply to all files in your project.