Difference between string.Empty and "" [duplicate]

This question already has answers here: 开发者_如何学C Closed 12 years ago.

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In C#, should I use string.Empty or String.Empty or “” ?

Is there any difference in c# between the following declarations...

private string m_port = string.Empty;

or...

private string m_port = "";

Is it just coding standard that makes it look neater?

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Just coding standard...

http://msdn.microsoft.com/en-US/library/system.string.empty%28VS.80%29.aspx

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They are the same, but looks better.

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The main difference is one of semantics - string.Emtpy says that you meant to have an empty string. "" might be a mistake (" ", for instance).

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Since String.Empty is an instance it should remove the overhead of the object creation, however I think a parser should be smart enough to figure this out.

All string literals is also pulled from an object pool I believe, so the object creation might not even take place.