Timer類提供以指定的時間間隔執行方法的機制。此類不能繼承。Timer能有規律的以一定的時間間隔激發timer事件,而執行相應的程序代碼。Timer控件的Interval屬性表示兩個計時器事件之間的時間間隔,其值以ms為單位。Timer將每隔Interval觸發一次計時器事件Tick。如:
namespace mytimer { public partial class Timer:Form { public Timer() { InitializeComponent(); } private int direction = 5; private void frmTimer_Load(object sender,EventArgs e) { cbInterval.SelectedIndex = 1; } private void btnMove_Click(object sender,EventArgs e) { timer1.Enabled = true; } private void timer_Tick(object sender,EventArgs e) { if(lblLogo.Left <= 0|| lblLogo.Right >= this.Width) { direction = -direction; } lblLogo.Left -= direction; } private void cbInterval SelectedIndexChanged(object sender,EventArgs e) { timer1.Interval = int.Parse(cbInterval.Text); } }