How to introduce namespaces in razor? ("Import namespace in razor view ")

After searching for half a day, it turns out that:

 

In aspx:

<% @ Import namespace = "Martian. Areas. SFC. Models" %>
<% @ Import namespace = "Martian. Areas. SFC. Tools" %>

In cshtml:

@ Using Martian. Areas. SFC. Models
@ Using Martian. Areas. SFC. Tools

 

The style I like now is added; because it seems that the only difference from C # is that there is an additional @

@ Using Martian. Areas. SFC. models;
@ Using Martian. Areas. SFC. tools;

 

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