RegexStringValidator Class

.NET Framework (current version)
 

Provides validation of a string based on the rules provided by a regular expression.

Namespace:   System.Configuration
Assembly:  System.Configuration (in System.Configuration.dll)

System.Object
  System.Configuration.ConfigurationValidatorBase
    System.Configuration.RegexStringValidator

C#
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Public Class RegexStringValidator
	Inherits ConfigurationValidatorBase

NameDescription
System_CAPS_pubmethodRegexStringValidator(String)

Initializes a new instance of the RegexStringValidator class.

NameDescription
System_CAPS_pubmethodCanValidate(Type)

Determines whether the type of the object can be validated.(Overrides ConfigurationValidatorBase.CanValidate(Type).)

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubmethodValidate(Object)

Determines whether the value of an object is valid.(Overrides ConfigurationValidatorBase.Validate(Object).)

The RegexStringValidator object contains the rules necessary to validate a string object based on a regular expression. The rules are established when an instance of the RegexStringValidator class is created.

The CanValidate method determines whether the object type being validated matches the expected type. The object being validated is passed as a parameter of the Validate method.

The following code example demonstrates how to use the RegexStringValidator type.

C#
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Imports System
Imports System.Configuration

Namespace Microsoft.Samples.AspNet.Validators
  Class UsingRegexStringValidator
    Public Shared Sub Main()

      ' Display title.
      Console.WriteLine("ASP.NET Validators")
      Console.WriteLine()

      ' Create RegexString and Validator.
      Dim testString As String = "someone@example.com"
      Dim regexString As String = _
       "^[a-zA-Z\.\-_]+@([a-zA-Z\.\-_]+\.)+[a-zA-Z]{2,4}$"
      Dim myRegexValidator As RegexStringValidator = _ 
       New RegexStringValidator(regexString)

      ' Determine if the object to validate can be validated.
      Console.WriteLine("CanValidate: {0}", _
        myRegexValidator.CanValidate(testString.GetType()))

      Try
        ' Attempt validation.
        myRegexValidator.Validate(testString)
        Console.WriteLine("Validated.")

      Catch e As Exception
        ' Validation failed.
        Console.WriteLine("Error: {0}", e.Message.ToString())
      End Try

      ' Display and wait.
      Console.ReadLine()
    End Sub
  End Class
End Namespace

.NET Framework
Available since 2.0

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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