import CreateDirectory and FormatMessage : Windows API « Windows « C# / C Sharp
import CreateDirectory and FormatMessage
using System;
using System.Text;
using System.Runtime.InteropServices;
public class Starter {
public static void Main() {
bool resp = API.CreateDirectory(@"c*:\file.txt", IntPtr.Zero);
if (resp == false) {
StringBuilder message;
int errorcode = Marshal.GetLastWin32Error();
API.FormatMessage(API.FORMAT_MESSAGE_ALLOCATE_BUFFER | API.FORMAT_MESSAGE_FROM_SYSTEM | API.FORMAT_MESSAGE_IGNORE_INSERTS,IntPtr.Zero, errorcode,0, out message, 0, IntPtr.Zero);
Console.WriteLine(message);
}
}
}
public class API {
[DllImport("kernel32.dll", SetLastError = true)]
public static extern bool CreateDirectory(string lpPathName, IntPtr lpSecurityAttributes);
[DllImport("kernel32.dll", SetLastError = false)]
public static extern System.Int32 FormatMessage(
System.Int32 dwFlags,
IntPtr lpSource,
System.Int32 dwMessageId,
System.Int32 dwLanguageId,
out StringBuilder lpBuffer,
System.Int32 nSize,
IntPtr va_list);
public const int FORMAT_MESSAGE_ALLOCATE_BUFFER = 256;
public const int FORMAT_MESSAGE_IGNORE_INSERTS = 512;
public const int FORMAT_MESSAGE_FROM_STRING = 1024;
public const int FORMAT_MESSAGE_FROM_HMODULE = 2048;
public const int FORMAT_MESSAGE_FROM_SYSTEM = 4096;
public const int FORMAT_MESSAGE_ARGUMENT_ARRAY = 8192;
public const int FORMAT_MESSAGE_MAX_WIDTH_MASK = 255;
}
