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结构定义
[StructLayout (LayoutKind.Sequential)]
public struct SYSTEMTIME
{
public short Year;
public short Month;
public short DayOfWeek;
public short Day;
public short Hour;
public short Minute;
public short Second;
public short Miliseconds;
}
api函数声明
[DllImport ("kernel32.dll", CharSet=CharSet.Ansi)]
public extern static bool SetSystemTime(ref SYSTEMTIME time);
调用代码
SYSTEMTIME t = new SYSTEMTIME ();
t.Year = 2000; t.Month = 1; t.Day = 2; t.Hour = 12; t.Minute = 5;
bool r = SetSystemTime(ref t);
Console.WriteLine(r.ToString());
调用后修改Hour错误，其它都正确，为什么！
网友回答：
标准时间和本地时间没算好!
给你一个我用过的
using System;
using System.ComponentModel;
using System.Management;
using System.Net;
using System.Runtime.InteropServices;
using System.Text;
namespace Gainer.Communal
{
/// <summary>
/// SystemMethod 的摘要说明。
/// 操作系统的一些方法
/// </summary>
public class SystemMethod
{
//定义时间结构
public struct SystemTime
{
public ushort wYear;
public ushort wMonth;
public ushort wDayOfWeek;
public ushort wDay;
public ushort wHour;
public ushort wMinute;
public ushort wSecond;
public ushort wMilliseconds;
}
//导入SetSystemTime()
[DllImport("kernel32.dll", SetLastError=true)]
static extern int SetSystemTime (ref SystemTime lpSystemTime);
[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
);
static SystemMethod()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public static string GetMacID()
{
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
string macAddress = String.Empty;
foreach(ManagementObject mo in moc)
{
if(macAddress == String.Empty) // only return MAC Address from first card
{
if((bool)mo["IPEnabled"] == true)
{
macAddress = mo["MacAddress"].ToString() ;
mo.Dispose();
break;
}
}
mo.Dispose();
}
moc.Dispose();
mc.Dispose();
macAddress = macAddress.Replace(":", "");
return macAddress.ToString();
}
public static string GetHDDID()
{
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();
}
public static string GetHDDID(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 static string GetHostIP()
{
string strIP;
try
{
strIP=Dns.GetHostByName(Dns.GetHostName()).AddressList[0].ToString();
}
catch(Exception)
{
strIP="";
}
return strIP;
}
public static string GetHostName()
{
string strHostName;
try
{
strHostName=Dns.GetHostName();
}
catch(Exception)
{
strHostName = "";
}
return strHostName;
}
public static string EncString(string str)
{
return str;
}
public static string DecString(string str)
{
return str;
}
public static string GetSerial()
{
string strMacID = GetMacID();
return EncString (strMacID);
}
public static bool SetLocalTime(DateTime dtServer)
{
SystemTime st= new SystemTime ( ) ;
st.wYear= ( ushort )dtServer.Year ;
st.wMonth= ( ushort )dtServer.Month ;
st.wDayOfWeek= ( ushort )dtServer.DayOfWeek ;
st.wDay= ( ushort )dtServer.Day ;
st.wHour=Convert.ToUInt16 ( dtServer.Hour ) ;
if ( st.wHour>=12 )
{
st.wHour-= ( ushort )8 ;
}
else if ( st.wHour >= 8 )
{
st.wHour-= ( ushort )8 ;
}
else
{
st.wHour+= ( ushort )16 ;
}
st.wMinute=Convert.ToUInt16 ( dtServer.Minute ) ;
st.wSecond=Convert.ToUInt16 ( dtServer.Second ) ;
st.wMilliseconds=Convert.ToUInt16 ( dtServer.Millisecond ) ;
//修改本地端的时间和日期
if (SetSystemTime (ref st )!=0)
return true;
else
return false;
}
/*
用System.Windows.Forms名字空间下的Help类，它封装了HTMLHelp 1.0的引擎.
使用如下：
const string helpFile = "soapBroker.chm";
FileInfo fi = new FileInfo(helpFile);
if(fi.Exists)
{
if(sender == mnuHelpContent)
{
Help.ShowHelp(this, helpFile);
}
else if(sender == mnuHelpIndex)
{
Help.ShowHelpIndex(this, helpFile);
}
else if(sender == mnuHelpSearch)
{
Help.ShowHelp(this, helpFile, HelpNavigator.Find, "");
}
}
else
{
MessageBox.Show("未找到帮助文件!");
}
或者用System.Diagnostics 命名空间下的Process类启动一个新的进程。
Process.Start("YourHelp.chm");
*/
}
}
这个函数使用的是0时区的时间,对于我们用+8时区的,时间要自己算一下.