Get C# String from "char*" returned from C++ library method?

Question

I have a C++ library that I use in my C# application. One of the methods in the C++ library returns a char *. How can I convert that char * into a string in my C# application?

Apparently in my C# application, the data type returned in this method is of type sbyte *.

P/Invoke or...? (Please tag with the approach used for access.) — user166390
– user166390, Commented May 28, 2012 at 23:02
@pst i am not sure since i am very new to C++ programming.. i have methods in the sources section and the methods that will be used by the c# application in the header section. In the header section there is the method signatures.. — user1317277
– user1317277, Commented May 28, 2012 at 23:04

Thomas Levesque · Accepted Answer · 2012-05-28 23:04:37Z

4

String has a constructor that takes a char*:

char* x = ...
string s = new string(x);

And another one that takes a sbyte*:

sbyte* x = ...
string s = new string(x);

answered May 28, 2012 at 23:04

Thomas Levesque

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2 Comments

user1317277 Over a year ago

the following error is being generated when I assign sbyte * x to the C++ method that returns the char * : Error 1 Pointers and fixed size buffers may only be used in an unsafe context.. Any ideas? thanks!

user1317277 Over a year ago

found what the problem was... i had to write unsafe in the method signature... :) thanks a lot !:)

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