属性设置:
dateEdit1.Properties.DisplayFormat.FormatString = "yyyy-MM";
dateEdit1.Properties.EditFormat.FormatString = "yyyy-MM";
dateEdit1.Properties.Mask.EditMask = "yyyy-MM";
dateEdit1.Properties.Mask.UseMaskAsDisplayFormat = true;
事件: 禁止弹出下拉框 避免选日期
private void dateEdit1_QueryPopUp(object sender, System.ComponentModel.CancelEventArgs e)
{
e.Cancel = true;
}