天天向上

   1: using System.Windows.Forms;

   2: using System.Runtime.InteropServices;

   1: #region 設定系統時間

   2: [DllImport("Kernel32.dll")]

   3: public static extern bool SetLocalTime(ref SystemTime sysTime);  

   4:  

   5: public struct SystemTime

   6: {

   7:     public ushort wYear;

   8:     public ushort wMonth;

   9:     public ushort wDayOfWeek;

  10:     public ushort wDay;

  11:     public ushort wHour;

  12:     public ushort wMinute;

  13:     public ushort wSecond;

  14:     public ushort wMiliseconds;

  15: }

  16: public static bool SetLocalTimeByStr(string timestr)

  17: {

  18:     bool successful = false;

  19:     SystemTime sysTime = new SystemTime();

  20:     try

  21:     {

  22:         DateTime dt = Convert.ToDateTime(timestr);   // 將字串轉成DateTime格式

  23:  

  24:         sysTime.year = Convert.ToUInt16(dt.Year);

  25:         sysTime.month = Convert.ToUInt16(dt.Month);

  26:         sysTime.day = Convert.ToUInt16(dt.Day);

  27:         sysTime.hour = Convert.ToUInt16(dt.Hour);

  28:         sysTime.min = Convert.ToUInt16(dt.Minute);

  29:         sysTime.sec = Convert.ToUInt16(dt.Second);

  30:         successful = SetLocalTime(ref sysTime);

  31:     }

  32:     catch (Exception e)

  33:     {

  34:         MessageBox.Show("SetLocalTimeByStr Error" + e.Message);

  35:     }

  36:     return successful;

  37: }

  38: #endregion

   1: private void button1_Click(object sender, EventArgs e)

   2: {

   3:      textBox1.Text = DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss");

   4: }

   1: private void button2_Click(object sender, EventArgs e)

   2: {

   3:     DateTimeTool.SetLocalTimeByStr(textBox1.Text);

   4: }