I have the following function in C#.
public static string[] StringValue()
{
.....
return MyString;
}
I am trying to call the function in C++ using,
array<String^>^ MyString;
MyString = MyClass.StringValue();
for(int iter=0; iter < MyString->Length; iter++)
{
printf("%s", MyString[iter]);
}
The Value of MyString[iter] is not coming properly. It is proper in C# while debugging. The Length of MyString is coming proper but not the value.
printf("%s", MyString[iter]);
This expects a pointer to null-terminated array of char. And MyString[iter] sure is not that. Since you have a managed string, in a C++/CLI assembly, you can output it like this:
Console::WriteLine(MyString[iter]);
print is a C function and, unless really needed, is very out of place in C++/CLI code.
auto myStrings = MyClass::StringValues();
for each (auto s in myStrings) {
Console::WriteLine(s);
}
Strings can be very difficult to work with but .NET makes it easier. If you can, keep them in .NET. Otherwise, you'll have to deal with different character sets, encodings, data structures, memory allocation and ownership transfer conventions.
Instead of
printf("%s", MyString[iter]);
try to use
for ( int i = 0; i < MyString[iter].Length; i++ )
std::wcout << MyString[iter][i];
EDIT: You could use
System::Console::WriteLine( MyString[iter] );
error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'System::String ^' (or there is no acceptable conversion) I got for this line.. :(
for eachsyntax in C++/cli. And don't mix C++ or C calls without marshaling the data-type to the correct type.