.NET Framework 类库
Timer..::.Interval 属性

更新:2007 年 11 月

获取或设置在相对于上一次发生的 Tick 事件引发 Tick 事件之前的时间(以毫秒为单位)。

命名空间:  System.Windows.Forms
程序集:  System.Windows.Forms(在 System.Windows.Forms.dll 中)

语法

Visual Basic(声明)
Public Property Interval As Integer
Visual Basic (用法)
Dim instance As Timer
Dim value As Integer

value = instance.Interval

instance.Interval = value
C#
public int Interval { get; set; }
Visual C++
public:
property int Interval {
    int get ();
    void set (int value);
}
J#
/** @property */
public int get_Interval()
/** @property */
public  void set_Interval(int value)
JScript
public function get Interval () : int
public function set Interval (value : int)

属性值

类型:System..::.Int32

Int32 指定在相对于上一次发生的 Tick 事件引发 Tick 事件之前的毫秒数。该值不能小于 1。

备注

若要获取该时间间隔的秒数,将此数字除以 1,000。

示例

下面的代码示例实现简单的间隔计时器,该计时器每五秒钟发一次警报。当发生警报时,MessageBox 显示该警报已启动次数的计数,并询问用户计时器是否应继续运行。

Visual Basic
Public Class Class1
    Private Shared myTimer As New System.Windows.Forms.Timer()
    Private Shared alarmCounter As Integer = 1
    Private Shared exitFlag As Boolean = False    

    ' This is the method to run when the timer is raised.
    Private Shared Sub TimerEventProcessor(myObject As Object, _
                                           myEventArgs As EventArgs)
        myTimer.Stop()

        ' Displays a message box asking whether to continue running the timer.
        If MessageBox.Show("Continue running?", "Count is: " & alarmCounter, _
                            MessageBoxButtons.YesNo) = DialogResult.Yes Then
            ' Restarts the timer and increments the counter.
            alarmCounter += 1
            myTimer.Enabled = True
        Else
            ' Stops the timer.
            exitFlag = True
        End If
    End Sub

    Public Shared Sub Main()
        ' Adds the event and the event handler for the method that will
        ' process the timer event to the timer.
        AddHandler myTimer.Tick, AddressOf TimerEventProcessor

        ' Sets the timer interval to 5 seconds.
        myTimer.Interval = 5000
        myTimer.Start()

        ' Runs the timer, and raises the event.
        While exitFlag = False
            ' Processes all the events in the queue.
            Application.DoEvents()
        End While

    End Sub    

End Class

C#
public class Class1 {
    static System.Windows.Forms.Timer myTimer = new System.Windows.Forms.Timer();
    static int alarmCounter = 1;
    static bool exitFlag = false;

    // This is the method to run when the timer is raised.
    private static void TimerEventProcessor(Object myObject,
                                            EventArgs myEventArgs) {
       myTimer.Stop();

       // Displays a message box asking whether to continue running the timer.
       if(MessageBox.Show("Continue running?", "Count is: " + alarmCounter, 
          MessageBoxButtons.YesNo) == DialogResult.Yes) {
          // Restarts the timer and increments the counter.
          alarmCounter +=1;
          myTimer.Enabled = true;
       }
       else {
          // Stops the timer.
          exitFlag = true;
       }
    }

    public static int Main() {
       /* Adds the event and the event handler for the method that will 
          process the timer event to the timer. */
       myTimer.Tick += new EventHandler(TimerEventProcessor);

       // Sets the timer interval to 5 seconds.
       myTimer.Interval = 5000;
       myTimer.Start();

       // Runs the timer, and raises the event.
       while(exitFlag == false) {
          // Processes all the events in the queue.
          Application.DoEvents();
       }
    return 0;
    }
 }

Visual C++
public ref class Class1
{
private:
   static System::Windows::Forms::Timer^ myTimer = gcnew System::Windows::Forms::Timer;
   static int alarmCounter = 1;
   static bool exitFlag = false;

   // This is the method to run when the timer is raised.
   static void TimerEventProcessor( Object^ /*myObject*/, EventArgs^ /*myEventArgs*/ )
   {
      myTimer->Stop();

      // Displays a message box asking whether to continue running the timer.
      if ( MessageBox::Show( "Continue running?", String::Format( "Count is: {0}", alarmCounter ), MessageBoxButtons::YesNo ) == DialogResult::Yes )
      {

         // Restarts the timer and increments the counter.
         alarmCounter += 1;
         myTimer->Enabled = true;
      }
      else
      {

         // Stops the timer.
         exitFlag = true;
      }
   }


public:
   static void Main()
   {

      /* Adds the event and the event handler for the method that will 
                process the timer event to the timer. */
      myTimer->Tick += gcnew EventHandler( TimerEventProcessor );

      // Sets the timer interval to 5 seconds.
      myTimer->Interval = 5000;
      myTimer->Start();

      // Runs the timer, and raises the event.
      while ( exitFlag == false )
      {

         // Processes all the events in the queue.
         Application::DoEvents();
      }
   }

};

int main()
{
   Class1::Main();
}

J#
public class Class1
{
    private static System.Windows.Forms.Timer myTimer = 
        new System.Windows.Forms.Timer();
    private static int alarmCounter = 1;
    private static boolean exitFlag = false;

    // This is the method to run when the timer is raised.
    private static void TimerEventProcessor(Object myObject, 
                                            EventArgs myEventArgs)
    {
        myTimer.Stop();

        // Displays a message box asking whether to continue running the timer.
        if (MessageBox.Show("Continue running?", "Count is: " 
            + alarmCounter, MessageBoxButtons.YesNo).Equals(DialogResult.Yes)) {
            // Restarts the timer and increments the counter.
            alarmCounter += 1;
            myTimer.set_Enabled(true);
        }
        else {
            // Stops the timer.
            exitFlag = true;
        }
    } //TimerEventProcessor

    public static void main(String[] args)
    {
        /* Adds the event and the event handler for the method that will 
           process the timer event to the timer. 
         */
        myTimer.add_Tick(new EventHandler(TimerEventProcessor));

        // Sets the timer interval to 5 seconds.
        myTimer.set_Interval(5000);
        myTimer.Start();

        // Runs the timer, and raises the event.
        while (exitFlag == false) {
            // Processes all the events in the queue.
            Application.DoEvents();
        }
        return;
    } //main
} //Class1
平台

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

.NET Framework 和 .NET Compact Framework 并不是对每个平台的所有版本都提供支持。有关支持的版本的列表,请参见.NET Framework 系统要求

版本信息

.NET Framework

受以下版本支持:3.5、3.0、2.0、1.1、1.0

.NET Compact Framework

受以下版本支持:3.5、2.0、1.0
另请参见

参考

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