In C#. What is the differences between String and string? [duplicate]

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In C# what is the difference between String and string

In C# there are two string types. (The same for booleans, object, ect.). One that begins with upperc开发者_JAVA百科ase and one lowercase. String and string. They seem to have the same methods.

So whats is the difference between them?

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string is a keyword, while System.String is a class. You can consider string to be an alias for System.String.

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There is one difference... you can't use String without using System; beforehand.

What is the difference between String and string in C#?