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Showing content from https://docs.microsoft.com/en-us/dotnet/api/system.componentmodel.dataannotations.rangeattribute below:

RangeAttribute Class (System.ComponentModel.DataAnnotations) | Microsoft Learn

Specifies the numeric range constraints for the value of a data field.

public ref class RangeAttribute : System::ComponentModel::DataAnnotations::ValidationAttribute

[System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Parameter | System.AttributeTargets.Property, AllowMultiple=false)]
public class RangeAttribute : System.ComponentModel.DataAnnotations.ValidationAttribute

[System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, AllowMultiple=false)]
public class RangeAttribute : System.ComponentModel.DataAnnotations.ValidationAttribute

[<System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Parameter | System.AttributeTargets.Property, AllowMultiple=false)>]
type RangeAttribute = class
    inherit ValidationAttribute

[<System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, AllowMultiple=false)>]
type RangeAttribute = class
    inherit ValidationAttribute

Public Class RangeAttribute
Inherits ValidationAttribute

Inheritance

Attributes

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;
}

Imports System.Web.DynamicData
Imports System.ComponentModel.DataAnnotations
Imports System.ComponentModel

<MetadataType(GetType(ProductMetaData))> _
Partial Public Class Product

End Class


Public Class ProductMetaData
    
    <Range(10, 1000, _
           ErrorMessage:="Value for {0} must be between {1} and {2}.")> _
    Public Weight As Object

    <Range(300, 3000)> _
    Public ListPrice As Object

    <Range(GetType(DateTime), "1/2/2004", "3/4/2004", _
           ErrorMessage:="Value for {0} must be between {1} and {2}")> _
    Public SellEndDate As Object

End Class

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.

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.

Maps a set of names to a corresponding set of dispatch identifiers.

Retrieves the type information for an object, which can be used to get the type information for an interface.

Retrieves the number of type information interfaces that an object provides (either 0 or 1).

Provides access to properties and methods exposed by an object.

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