通过按Enter键聚焦选定的控件

Question

In C# windows application to navigate all control of a Form (using Enter Key) I am using the below code:

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyData == System.Windows.Forms.Keys.Enter)
    {
        SendKeys.Send("{TAB}");
    }
}

NB: Form Property KeyPreview = True;

The above code works fine but when I am going to navigate between two dateTimePicker ( dateTimePicker1 , dateTimePicker2 ) pressing Enter Key. When Form open Focus on dateTimePicker1 and press Enter Key then Focus dateTimePicker2 and press Enter Key Focus dateTimePicker1 .

The below code works fine without the above code. What is the best way to navigate the two dateTimePicker using the above code or any other way?

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();
    }
}

Anybody please help me.

Answer 1

You can subscribe your two DateTimePickers to the same event handler instead of using two events, and use the sender object:

private void dateTimePicker_KeyDown(object sender, KeyEventArgs e)
{
    var dtp = sender as DateTimePicker;
    if (e.KeyCode == Keys.Enter)
    {
        if (dtp?.Name[dtp.Name.Length - 1] == '1')
            dateTimePicker2.Focus();
        else dateTimePicker1.Focus();
    }
}

Just don't forget to change the value of the KeyDown event in the properties window of the both DateTimePickrs to point to this event.