向toolStrip控件中添加 日期 控件

private DateTimePicker dtp = new DateTimePicker();//这里实例化一个DateTimePicker控件  
 
        private void N_HC_JHCJUserControl_Load(object sender, EventArgs e)  
        {  
            //向toolStrip控件中添加 日期 控件  
            dtp.Width = 110;  
            dtp.Format = DateTimePickerFormat.Custom;  
            dtp.CustomFormat = "yyyy年MM月dd日";  
            ToolStripControlHost host1 = new ToolStripControlHost(dtp);  
            toolStrip1.Items.Insert(0, host1);  
        }