How to convert a GUID to a string in C

Question

I m new to C     I know in vb net  i can do this   Dim guid as string   System Guid NewGuid ToString   In C   I m trying to do   String guid   System Guid NewGuid   ToString    but i get an  Cannot convert method group  ToString  to non-delegate type  string   Did you intend to invoke the method   error

User · Answer

In Visual Basic  you can call a parameterless method without the braces       In C   they re mandatory  So you should write   String guid   System Guid NewGuid   ToString      Without the braces  you re assigning the method itself  instead of its result  to the variable guid  and obviously the method cannot be converted to a String  hence the error

User · Answer

String guid   System Guid NewGuid   ToString      Otherwise it s a delegate

User · Answer

Guid guidId   Guid Parse  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx    string guidValue   guidId ToString  D      return with hyphens

User · Answer

You need  String guid   System Guid NewGuid   ToString

User · Answer

you are missing    on the end of ToString

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Here are examples of output from each of the format specifiers   N  cd26ccf675d64521884f1693c62ed303 D  cd26ccf6-75d6-4521-884f-1693c62ed303 B   cd26ccf6-75d6-4521-884f-1693c62ed303  P   cd26ccf6-75d6-4521-884f-1693c62ed303  X   0xcd26ccf6 0x75d6 0x4521  0x88 0x4f 0x16 0x93 0xc6 0x2e 0xd3 0x03     The default is D   Run this yourself

User · Answer

According to MSDN the method Guid ToString string format  returns a string representation of the value of this Guid instance  according to the provided format specifier  Examples   guidVal ToString   or guidVal ToString  quot D quot   returns 32 hex digits separated by hyphens  00000000-0000-0000-0000-000000000000 guidVal ToString  quot N quot   returns 32 hex digits 00000000000000000000000000000000 guidVal ToString  quot B quot   returns 32 hex digits separated by hyphens  enclosed in braces  00000000-0000-0000-0000-000000000000  guidVal ToString  quot P quot   returns 32 hex digits separated by hyphens  enclosed in parentheses   00000000-0000-0000-0000-000000000000

User · Answer

Following Sonar rules  you should whenever you can try to protect yourself  and use  System globalisation whenever it s possible like for DateTime ToString     So regarding the other answers you could use     guid ToString     CultureInfo InvariantCulture    where    can be replaces by   N  D  B   P and X for more infos see this comment   Example here

User · Answer

You re missing the    after ToString that marks it as a function call vs  a function reference  the kind you pass to delegates   which incidentally is why c  has no AddressOf operator  it s implied by how you type it   Try this   string guid   System Guid NewGuid   ToString

User · Answer

Did you write  String guid   System Guid NewGuid   ToString    or  String guid   System Guid NewGuid   ToString      notice the paranthesis

[c#] How to convert a GUID to a string in C#?

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