Validation settings for the Model's "End" property:
DateRangeAttribute.MinDayCount = 1;
DateRangeAttribute.MaxDayCount = 30
Two DevExpress ASP.NET MVC Date Edit extensions can be combined to introduce date range selection capabilities in your web application. One editor is used to specify the start date, another – to specify the end date. To link editors, decorate the end-date editor's model field with the DateRange attribute and set the StartDateEditFieldName property of the attribute to the field name of the start-date editor.
You can customize the date range settings using the following attribute properties.
If the number of days in the specified range exceeds the specified range limits, an error message is displayed when the Submit button is clicked.