C# DEV--DateEdit长日期

            this.datBeginTime.Properties.VistaEditTime = DevExpress.Utils.DefaultBoolean.True;
            this.datEndTime.Properties.VistaEditTime = DevExpress.Utils.DefaultBoolean.True;

            this.datBeginTime.Properties.VistaDisplayMode = DevExpress.Utils.DefaultBoolean.True;
            this.datEndTime.Properties.VistaDisplayMode = DevExpress.Utils.DefaultBoolean.True; 

            this.datBeginTime.EditValue = DateTime.Now;
            this.datEndTime.EditValue = DateTime.Now;

            this.datBeginTime.Properties.DisplayFormat.FormatString = "yyyy-MM-dd HH:mm:ss";
            this.datBeginTime.Properties.DisplayFormat.FormatType = DevExpress.Utils.FormatType.DateTime;
            this.datBeginTime.Properties.EditFormat.FormatString = "yyyy-MM-dd HH:mm:ss";
            this.datBeginTime.Properties.EditFormat.FormatType = DevExpress.Utils.FormatType.DateTime;
            this.datBeginTime.Properties.Mask.EditMask = "yyyy-MM-dd HH:mm:ss";

            this.datEndTime.Properties.DisplayFormat.FormatString = "yyyy-MM-dd HH:mm:ss";
            this.datEndTime.Properties.DisplayFormat.FormatType = DevExpress.Utils.FormatType.DateTime;
            this.datEndTime.Properties.EditFormat.FormatString = "yyyy-MM-dd HH:mm:ss";
            this.datEndTime.Properties.EditFormat.FormatType = DevExpress.Utils.FormatType.DateTime;
            this.datEndTime.Properties.Mask.EditMask = "yyyy-MM-dd HH:mm:ss";