Or Composite Validator

Article
07/14/2010

Retired Content
This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This page may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.
The latest Enterprise Library information can be found at the Enterprise Library site.

Class Name: OrCompositeValidator

Attribute Name: None

Configuration tool name: Or Composite Validator

Description

This validator creates a composite validator. Validation requires that at least one of the validators that make up the composite validator be true. For example, you can use the Or Composite Validator to require that the Not Null Validator OR the Date Time Range Validator be true.

Properties

The following table lists the Or Composite Validator properties.

Or Composite Validator Properties

Property	Description
Tag	This property is a user-supplied string. Typically, it is used to sort or categorize validation results that are in a log.
MessageTemplate	This property is a user-supplied string. Typically, it describes the validation result and is intended for a log.
MessageTemplateResourceName	If you do not want to use the MessageTemplate property to specify a message, you can use another template by specifying it with the MessageTemplateResourceName value. If you include both a MessageTemplate value and a MessageTemplateResourceName value, the MessageTemplate value takes precedence.
MessageTemplateResourceTypeName	If you specify a MessageTemplateResourceName value then you must specify a MessageTemplateResourceTypeName value, which is the type of the template you want to use.

Examples

The following examples show how to use the validators with attributes and with code.

Attributes

This example shows the construction of an OrCompositeValidator object using attributes. The validator combines a NotNullValidator and a StringLengthValidator.

public class Product
{
   [ValidatorComposition(CompositionType.Or)]
   [NotNullValidator]
   [StringLengthValidator(10)]
   public string ProductCode
   {
      get
      {
         return _productCode;
      }
   }
// ...
}

'Usage
Public Class Product
    <ValidatorComposition(CompositionType.Or)> _
       <NotNullValidator()> _
       <StringLengthValidator(10)> _
       ReadOnly Property ProductCode(ByVal _productCode As String)
        Get
            Return _productCode
        End Get
    End Property
    ' ...
End Class

Retired Content
This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This page may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.
The latest Enterprise Library information can be found at the Enterprise Library site.

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