C# Frequently Asked Questions : What's the difference between <code>string</code> and <code>System.String</code>?

C# Frequently Asked Questions

The C# team posts answers to common questions

C# defines a number of aliases for CLR types. They may be used interchangably, and even mixed together, e.g.

string x = new System.String(' ', 5);.

These are the aliases defined:

[Author: Jon Skeet]

Published Friday, March 12, 2004 12:20 AM by CSharpFAQ

	Adam Weigert said: Are these aliases just like aliasing a type in the using statement? So in effect, I could create my own aliases that match VB.NET data types? using Byte = System.Byte using Short = System.Int16; using Integer = System.Int32; using Long = System.Int64; Not saying that I would want to, but hey you could, right? :p March 12, 2004 5:34 AM
	Boris Letocha said: I think that void is also System.Void, but it is not interchable in C#, isn't it? March 12, 2004 8:44 AM
	hai said: bool System.Boolean May 6, 2004 7:08 PM
	Max said: String s; DateTime dt; if (dt == null) // error, because DateTime is value type if (s == null) // ok (because reference type?) Response.Write(dt); // writes "01.01.0001 00:00:00" Response.Write(s); // writes "", although s=null, why? July 26, 2004 7:04 AM
	Afinal, qual a diferença de string e String? - Rafael Silva said: PingBack from http://sharpcode.com.br/blogs/rafaelsilva/archive/2008/08/28/afinal-qual-a-diferen-231-a-de-string-e-string.aspx August 28, 2008 10:27 AM

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