Question

I need to concatenate a list of MFC CString objects into a single CSV string. .NET has String.Join for this task. Is there an established way to do this in MFC/C++?

Answer 1

The + operator is overloaded to allow string concatenation. I’d suggest take a look at the documentation on MSDN:

Basic CString Operations has the following example:

CString s1 = _T("This ");        // Cascading concatenation
s1 += _T("is a ");
CString s2 = _T("test");
CString message = s1 + _T("big ") + s2;  
// Message contains "This is a big test".

If you want the strings to be comma-separated, just add the commas yourself.