C#实现读取指定盘符硬盘序列号的方法

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using Microsoft.Win32;
namespace Wjb.ReadOrWriteIniAndReg
{
/**/////// 读取指定盘符的硬盘序列号
///
public class HardDiskVal
{
[DllImport("kernel32.dll")]
private static extern int GetVolumeInformation(
string lpRootPathName,string lpVolumeNameBuffer,int nVolumeNameSize,ref int lpVolumeSerialNumber,int lpMaximumComponentLength,int lpFileSystemFlags,string lpFileSystemNameBuffer,int nFileSystemNameSize
);
/**////
/// 获得盘符为drvID的硬盘序列号，缺省为C
///
///
///
public string HDVal(string drvID)
{
const int MAX_FILENAME_LEN = 256;
int retVal = 0;
int a =0;
int b =0;
string str1 = null;
string str2 = null;
int i = GetVolumeInformation(
drvID + @":",str1,MAX_FILENAME_LEN,ref retVal,a,b,str2,MAX_FILENAME_LEN
);
return retVal.ToString();
}
public string HDVal()
{
const int MAX_FILENAME_LEN = 256;
int retVal = 0;
int a =0;
int b =0;
string str1 = null;
string str2 = null;
int i = GetVolumeInformation(
"c:",MAX_FILENAME_LEN
);
return retVal.ToString();
}
}