The difference between a C # string and a string

both string and string exist in C #

Description of string in MSDN:

string is a alias for string in the. NET Framework. String is a string alias, string is a class in C #, string is the class of the framework, and C # string is mapped to a string of the framework. If a string is used, the compiler compiles it into a string, so the compiler can do a little bit less work if you use string directly.

If you use C #, it is recommended that you use string to compare to specifications. String always represents System.String (1.x) or:: System.String (2.0), string is only preceded by using System, and there is no type named string in the current namespace (class, struct, delegate, enum) is only representative of System.String.

• String is a class in C #, and string is a class of the. NET Framework (does not display blue in the C # IDE)
• C # string mapped to a string of the. NET Framework
• If a string is used, the compiler compiles it into a string, so the compiler can do a little bit less work if you use string directly
• If you use C #, we recommend that you use string to compare compliance
• String always represents System.String (1.x) or:: System.String (2.0), string is only preceded by using System, and there is no type named string in the current namespace (class, struct, delegate, enum) is only representative of System.String
• String is a keyword, string is not, that is, string cannot be the name of a class, struct, enumeration, field, variable, method, property, and string can

Reference Address: http://www.cnblogs.com/albertly/archive/2008/11/18/1335823.html

The difference between a C # string and a string