如何通过C#修改计算机系统时间？急急！

Question

获取数据库时间，根据数据库时间来修改计算机系统的时间！

Answer 1

using System.Drawing; 
using System.Collections; 
using System.ComponentModel; 
using System.Windows.Forms; 
using System.Data; 
using System.Runtime.InteropServices; namespace WindowsApplication1 
{ 
[StructLayout(LayoutKind.Sequential)] 
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 wMiliseconds; 
} public class Win32 
{ 
[DllImport("Kernel32.dll")] 
public static extern bool SetSystemTime( ref SystemTime sysTime ); 
[DllImport("Kernel32.dll")] 
public static extern void GetSystemTime(ref SystemTime sysTime); 
} 
/// <summary> 
/// Form1 的摘要说明。 
/// </summary> 
public class Form1 : System.Windows.Forms.Form 
{ 
private System.Windows.Forms.Button button1; 
private System.Windows.Forms.TextBox textBox1; 
private System.Windows.Forms.TextBox textBox2; 
/// <summary> 
/// 必需的设计器变量。 
/// </summary> 
private System.ComponentModel.Container components = null; public Form1() 
{ 
// 
// Windows 窗体设计器支持所必需的 
// 
InitializeComponent(); // 
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码 
// 
} /// <summary> 
/// 清理所有正在使用的资源。 
/// </summary> 
protected override void Dispose( bool disposing ) 
{ 
if( disposing ) 
{ 
if (components != null) 
{ 
components.Dispose(); 
} 
} 
base.Dispose( disposing ); 
} #region Windows 窗体设计器生成的代码 
/// <summary> 
/// 设计器支持所需的方法 - 不要使用代码编辑器修改 
/// 此方法的内容。 
/// </summary> 
private void InitializeComponent() 
{ 
this.button1 = new System.Windows.Forms.Button(); 
this.textBox1 = new System.Windows.Forms.TextBox(); 
this.textBox2 = new System.Windows.Forms.TextBox(); 
this.SuspendLayout(); 
// 
// button1 
// 
this.button1.Location = new System.Drawing.Point(188, 174); 
this.button1.Name = "button1"; 
this.button1.TabIndex = 0; 
this.button1.Text = "button1"; 
this.button1.Click += new System.EventHandler(this.button1_Click); 
// 
// textBox1 
// 
this.textBox1.Location = new System.Drawing.Point(56, 12); 
this.textBox1.Name = "textBox1"; 
this.textBox1.Size = new System.Drawing.Size(510, 21); 
this.textBox1.TabIndex = 1; 
this.textBox1.Text = "textBox1"; 
// 
// textBox2 
// 
this.textBox2.Location = new System.Drawing.Point(58, 50); 
this.textBox2.Name = "textBox2"; 
this.textBox2.Size = new System.Drawing.Size(506, 21); 
this.textBox2.TabIndex = 2; 
this.textBox2.Text = "textBox2"; 
// 
// Form1 
// 
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); 
this.ClientSize = new System.Drawing.Size(602, 273); 
this.Controls.Add(this.textBox2); 
this.Controls.Add(this.textBox1); 
this.Controls.Add(this.button1); 
this.Name = "Form1"; 
this.Text = "Form1"; 
this.ResumeLayout(false); } 
#endregion /// <summary> 
/// 应用程序的主入口点。 
/// </summary> 
[STAThread] 
static void Main() 
{ 
Application.Run(new Form1()); 
} private void button1_Click(object sender, System.EventArgs e) 
{ 
textBox1.Text = DateTime.Now.ToLongDateString() + DateTime.Now.ToLongTimeString(); 
SystemTime sysTime = new SystemTime(); sysTime.wYear = Convert.ToUInt16(DateTime.Now.Year); 
sysTime.wMonth = Convert.ToUInt16(DateTime.Now.Month); 
//处置北京时间 
int nBeijingHour = DateTime.Now.Hour - 8; 
if (nBeijingHour <= 0) 
{ 
nBeijingHour += 24; 
sysTime.wDay= Convert.ToUInt16(DateTime.Now.Day - 1); 
sysTime.wDayOfWeek = Convert.ToUInt16(DateTime.Now.DayOfWeek - 1); 
} 
else 
{ 
sysTime.wDay= Convert.ToUInt16(DateTime.Now.Day); 
sysTime.wDayOfWeek = Convert.ToUInt16(DateTime.Now.DayOfWeek); 
} 
sysTime.wHour = Convert.ToUInt16(nBeijingHour); 
sysTime.wMinute = Convert.ToUInt16(DateTime.Now.Minute); 
sysTime.wSecond = Convert.ToUInt16(DateTime.Now.Second); 
sysTime.wMiliseconds = Convert.ToUInt16(DateTime.Now.Millisecond); Win32.SetSystemTime(ref sysTime); 
textBox2.Text = DateTime.Now.ToLongDateString() + DateTime.Now.ToLongTimeString(); 
} 
} 
}

Answer 2

我要从SQL 2000 数据库里取数据来改变系统的时间
运行环境是VS2005

Answer 3

#region ComputerTime
        [StructLayout(LayoutKind.Sequential)]
        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 wMiliseconds;
        }
        public class Win32
        {
            [DllImport("Kernel32.dll")]
            public static extern bool SetSystemTime(ref SystemTime SysTime);
            [DllImport("Kernel32.dll")]
            public static extern void GetSystemTime(ref SystemTime SysTime);
        }
        #endregion        #region 时间同步
        /// <summary>
        /// 设置与服务器同步时间 
        /// </summary>
        public void SynchronousTime()
        {
            try
            {
                #region 更改计算机时间                SystemTime sysTime = new SystemTime();                DateTime ServerTime = 需要更改的时间                sysTime.wYear = Convert.ToUInt16(ServerTime.Year);                sysTime.wMonth = Convert.ToUInt16(ServerTime.Month);                //处置北京时间                 int nBeijingHour = ServerTime.Hour - 8;                if (nBeijingHour <= 0)
                {
                    nBeijingHour += 24;                    sysTime.wDay = Convert.ToUInt16(ServerTime.Day - 1);                    sysTime.wDayOfWeek = Convert.ToUInt16(ServerTime.DayOfWeek - 1);
                }
                else
                {
                    sysTime.wDay = Convert.ToUInt16(ServerTime.Day);                    sysTime.wDayOfWeek = Convert.ToUInt16(ServerTime.DayOfWeek);
                }                sysTime.wHour = Convert.ToUInt16(nBeijingHour);                sysTime.wMinute = Convert.ToUInt16(ServerTime.Minute);                sysTime.wSecond = Convert.ToUInt16(ServerTime.Second);                sysTime.wMiliseconds = Convert.ToUInt16(ServerTime.Millisecond);                Win32.SetSystemTime(ref sysTime);                #endregion
            }
            catch
            {
                //产生错误则不引发异常。
            }
        }
        #endregion==========
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