private void L_date_Click(object sender, EventArgs e)
{
int number = Convert.ToInt16(dateOnMars.Day);
//f_activity = new Factivity(this, number);
f_activity.activity_show(number);
}
private void V_Activities_ItemActivate(object sender, EventArgs e)
{
//V_Activities.SelectedIndices.IndexOf(0);
selectedDay = Convert.ToInt16(V_Activities.SelectedIndices[0].ToString());
//f_activity = new Factivity((Fcontainer)this.MdiParent, selectedDay);
f_activity.activity_show(selectedDay);
}