Question

在我的C＃Windows窗体应用程序中，我想通过按 Enter 键在两个dateTimePicker（dateTimePicker1，dateTimePicker2）之间导航。
当Form打开焦点dateTimePicker1并按 Enter 键然后关注dateTimePicker2并按输入键焦点 dateTimePicker1 < / KBD>。

我正在尝试以下代码，但它不起作用：

private void dateTimePicker2_Enter(object sender, EventArgs e)
{
   dateTimePicker1.Focus();
}

Answer 1

当输入控件按Tab键更改焦点或点击其中时，会触发Enter Event。如果您想收听输入密钥，则需要使用KeyDown Event。

事件处理的实现如下所示：

private void dateTimePicker1_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Enter) {
        dateTimePicker2.Focus();
    }
}

private void dateTimePicker2_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Enter) {
        dateTimePicker1.Focus();
    }
}

Answer 2

试试这个

private void dateTimePicker1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar == (char)Keys.Enter)
    {
        dateTimePicker2.Focus();
    }
}

private void dateTimePicker2_KeyPress(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar == (char)Keys.Enter)
    {
        dateTimePicker1.Focus();
    }
}

Answer 3

Enter事件不代表按Enter键，表示用户将焦点更改为控件。

https://msdn.microsoft.com/en-us/library/system.windows.forms.control.enter(v=vs.110).aspx

Answer 4

您应该使用KeyDown事件

    private void dateTimePicker1_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Enter)
            dateTimePicker2.Focus();
    }

C＃dateTimePicker Focus不起作用

4 个答案: