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CustomValidationAttribute.ValidatorType Property

Gets the type that contains the method for validating the member.

Namespace:  System.ComponentModel.DataAnnotations
Assembly:  System.ComponentModel.DataAnnotations (in System.ComponentModel.DataAnnotations.dll)

public Type ValidatorType { get; }

Property Value

Type: System.Type
The type that contains the method specified in the Method property.

The type supplied for the ValidatorType property must be marked as public in C# or Public in Visual Basic.

The first example shows how to apply the CustomValidationAttribute attribute to an entity member named SalesPerson and an entity class named CustomerAddress. The specified method named ValidateSalesPerson is executed when a value is applied to the SalesPerson property and the method named ValidateAddress is executed when values are applied to the CustomerAddress class.


public class Customer
{
  [CustomValidation(typeof(AWValidation), "ValidateSalesPerson")]
  public string SalesPerson { get; set; }
}

[CustomValidation(typeof(AWValidation), "ValidateAddress")]
public class CustomerAddress
{
  // Provide properties.
}


The second example shows the validation type and methods for validating the entity member and entity class. The parameters for the validation methods are strongly-typed. ValidateSalesPerson takes a string value containing the name of the sales person to apply to the property. ValidateAddress takes an instance of the CustomerAddress class.


using System.ComponentModel.DataAnnotations;

public class AWValidation
{
  public static ValidationResult ValidateSalesPerson(string salesPerson)
  {
    bool isValid;

    // Perform validation logic here and set isValid to true or false.

    if (isValid)
    {
      return ValidationResult.Success;
    }
    else
    {
      return new ValidationResult(
          "The selected sales person is not available for this customer.");
    }
  }

  public static ValidationResult ValidateAddress(CustomerAddress addressToValidate)
  {
    bool isValid;

    // Perform validation logic here and set isValid to true or false.

    if (isValid)
    {
      return ValidationResult.Success;
    }
    else
    {
      return new ValidationResult(
          "The address for this customer does not match the required criteria.");
    }
  }
}


Silverlight

Supported in: 5, 4, 3

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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