C＃keypress事件多次触发

问题描述

确定。我的问题是，当我在表单中并按F5时，它就像一个魅力，我的所有数据和控件都会更新。第二次按F5，它会两次触发frmarbeidsplan_keydown（？），第三次触发事件4次，然后8次16次。



每次我按F5的时间是我按下它的次数加倍并循环代码。我不明白为什么？

Ok. My problem is that when i am in the form and press F5 it works like a charm and all my data and controls are updated. Second time i press F5 it fires the frmarbeidsplan_keydown twice (?), and the third time it fires the event 4 times, and then 8 times and 16 times.

Every time i press F5 it doubles the amount of times i have pressed it and loops the code. I cannot understand why?

private void frmArbeidsplan_KeyDown(object sender, KeyEventArgs e)
 {
     if (e.KeyCode == Keys.F5)
     {
         MessageBox.Show("F5");
         e.SuppressKeyPress = true;
         e.Handled = true;
         OppdaterSkjema();
     }

 }

//Refresh skjema med data
        private void OppdaterSkjema()
        {
            if (this.lOG_ArbeidsplanDataGridView.IsCurrentCellInEditMode)
            {
                this.Validate();
                this.lOG_ArbeidsplanDataGridView.EndEdit();
                this.lOG_ArbeidsplanBindingSource.EndEdit();
                this.lOG_ArbeidsplanTableAdapter.Update(this.dataSetApoLogiDose);
            }
            OppdaterStatus(0, 1, 5, "Fjerner objekter fra skjema");

            Form.ControlCollection fObjs = (ControlCollection)this.Controls;
            int i = fObjs.Count;

            while (i != 0)
            {
                fObjs[0].Dispose();
                i = i - 1;
            }


            this.InitializeComponent();
            this.frmArbeidsplan_Load(sndr, es);
            OppdaterStatus(-1, 4, 5, "Siste lasting:" + DateTime.Now.ToLongTimeString());


        }

推荐答案

void onKeyPressEvent(object sender, KeyEventArgs e)
{
if(e.Handled)
return;

{
//
// the block of codes to be executed on the key press
// should added here.
//
}
e.Handled = true;
}

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