Realization of C Method for Reading Designated Disk Letter Hard Disk Sequence Number

In this paper, an example is given to describe the method of C # to read the serial number of hard disk with specified drive letter. Share it for your reference, as follows:

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using Microsoft.Win32;
namespace Wjb.ReadOrWriteIniAndReg
{
/**///////  Reads the hard disk serial number of the specified drive letter 
///
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
);
/**////
///  Get a drive letter of drvID The hard disk serial number of, and the default is 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:\\",
str1,
MAX_FILENAME_LEN,
ref retVal,
a,
b,
str2,
MAX_FILENAME_LEN
);
return retVal.ToString();
}
}

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