RangeAttribute Class

When you apply this attribute to a data field, you must follow the guidelines for how to use validation attributes. For more information, see ASP.NET Dynamic Data Guidelines.

The following example shows how to use the RangeAttribute to customize formatting for a data field. The example performs the following steps:

• Implements a metadata partial class and the associated metadata class.

• In the associated metadata class, it applies the RangeAttribute attribute to obtain the following results:

  • Apply the attribute to a data field of type integer.

  • Apply the attribute to an integer data field and define a custom validation error message.

  • Apply the attribute to a DateTime data field and define a custom validation error message.

using System;
using System.Web.DynamicData;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel;

[MetadataType(typeof(ProductMetaData))]
public partial class Product
{

}


public class ProductMetaData
{

    [Range(10, 1000, 
        ErrorMessage = "Value for {0} must be between {1} and {2}.")]
    public object Weight;

    [Range(300, 3000)]
    public object ListPrice;

    [Range(typeof(DateTime), "1/2/2004", "3/4/2004",
        ErrorMessage = "Value for {0} must be between {1} and {2}")]
    public object SellEndDate;

}
 

To compile the example, you need the following:

• Microsoft Visual Studio 2008 Service Pack 1 or Visual Web Developer 2008 Express Edition SP1.

• A data-driven Web site. This enables you to create a data context for the database and the class that contains the data field to customize. For more information, see Walkthrough: Creating a New Dynamic Data Web Site using Scaffolding.

.NET Framework

.NET Framework Client Profile

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference