在其他datetimepicker winforms C＃中，选择“日期”打开datetimepicker日历

Question

I have 3 Datetime pickers on a windows form in C#. The datetimepickers are named dtp1,dtp2,dtp3. Once I select a date in dtp1 I want the calendar of dtp2 to open. In other words dtp2 calendar should show up. I have searched in this forum and google but couldnt find right solution for this.

I am currently opening the calendar of dtp1 on value change of a combobox using the code below.

dtp1.Select();
SendKeys.Send("%{DOWN}");

But if I use the same code on Value changed event of dtp1 it reopens the calendar of dtp1 instead of dtp2 . I tried the following in value changed event of dtp1 .

    private void dtp1_ValueChanged(object sender, EventArgs e)
    {
        listView1.Items.Clear();
        listView2.Items.Clear();

        dtp2.Select(); //dtp2.Focus();
        SendKeys.Send("%{DOWN}");
    }

My intention in opening the next calendar is to force the user to select the value from the next control. Any help would be appreciated.

Answer 1

Instead of ValueChanged event, use CloseUp

private void dtp1_CloseUp(object sender, EventArgs e)
{
    this.dtp2.Select();
    SendKeys.Send("%{DOWN}");
}

Hope it helps!