winform 修改系统日期

最新推荐文章于 2025-03-03 08:54:52 发布

yanguan55

最新推荐文章于 2025-03-03 08:54:52 发布

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分类专栏： Winform

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这篇博客展示了如何在C#的WinForm应用程序中利用API函数`SetSystemTime`来修改系统的日期。通过创建一个窗口，用户可以使用`monthCalendar`选择日期，`dateTimePicker`设置时间，点击按钮实现系统日期的更改。当日期被修改时，系统会弹出提示确认操作成功。

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public Form1()
{
InitializeComponent();
}
//api函数声明
[DllImport("kernel32.dll", CharSet = CharSet.Ansi)]
public extern static bool SetSystemTime(ref SYSTEMTIME time);
[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;
}
private void timer1_Tick(object sender, EventArgs e)
{
lblNowTime.Text = DateTime.Now.ToString();
}

private void Form1_Load(object sender, EventArgs e)
{
lblNowTime.Text = DateTime.Now.ToString();
Microsoft.Win32.SystemEvents.TimeChanged+=new EventHandler(SystemEvents_TimeChanged);
}

private void SystemEvents_TimeChanged(object sender, EventArgs e)
{
MessageBox.Show("系统日期修改成功！","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
}

private void button1_Click(object sender, EventArgs e)
{
mYear = monthCalendar1.SelectionRange.Start.Year;
mMonth = monthCalendar1.SelectionRange.Start.Month;
mDay = monthCalendar1.SelectionRange.Start.Day;
//调用代码
SYSTEMTIME t = new SYSTEMTIME();
t.Year = (short)mYear;
t.Month = (short)mMonth;
t.Day = (short)mDay;
t.Hour = (short)(dateTimePicker1.Value.Hour - 8);//这个函数使用的是0时区的时间,例如，要设12点，则为12-8
t.Minute = (short)dateTimePicker1.Value.Minute;
t.Second = (short)dateTimePicker1.Value.Second;
bool v = SetSystemTime(ref t);
}
int mYear;
int mDay;
int mMonth;
private void monthCalendar1_DateSelected(object sender, DateRangeEventArgs e)
{
mYear = e.Start.Year;
mMonth = e.Start.Month;
mDay =e.Start.Day;
}

private void button2_Click(object sender, EventArgs e)
{
Application.Exit();
}