Get string from c++ dll in c#

[SBeier]

I found a solution.. I needed to change my struct in c# to

        struct SFILE_FIND_DATA
        {
            [MarshalAsAttribute(UnmanagedType.ByValTStr, SizeConst = 260)]
            public string cFileName;              // Name of the found file
            public IntPtr szPlainName;                      // Plain name of the found file
            public UInt32 dwHashIndex;                      // Hash table index for the file
            public UInt32 dwBlockIndex;                     // Block table index for the file
            public UInt32 dwFileSize;                       // Uncompressed size of the file, in bytes
            public UInt32 dwFileFlags;                      // MPQ file flags
            public UInt32 dwCompSize;                       // Compressed file size
            public UInt32 dwFileTimeLo;                     // Low 32-bits of the file time (0 if not present)
            public UInt32 dwFileTimeHi;                     // High 32-bits of the file time (0 if not present)
            public UInt32 lcLocale;                         // Locale version
        };