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LongValidator Class

Provides validation of an Int64 value.

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

'Declaration
Public Class LongValidator _
	Inherits ConfigurationValidatorBase

The LongValidator type exposes the following members.

  NameDescription
Public methodLongValidator(Int64, Int64)Initializes a new instance of the LongValidator class.
Public methodLongValidator(Int64, Int64, Boolean)Initializes a new instance of the LongValidator class.
Public methodLongValidator(Int64, Int64, Boolean, Int64)Initializes a new instance of the LongValidator class.
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  NameDescription
Public methodCanValidateDetermines whether the type of the object can be validated. (Overrides ConfigurationValidatorBase.CanValidate(Type).)
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodValidateDetermines whether the value of an object is valid. (Overrides ConfigurationValidatorBase.Validate(Object).)
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The LongValidator is used to ensure a long (a 64-bit signed integer) meets specific criteria. The criteria for validation is established when an instance of the LongValidator class is created. The LongValidator(Int64, Int64) constructor ensures that the long value that is being validated adheres to both a minimum and a maximum length. The LongValidator(Int64, Int64, Boolean) constructor checks both the minimum and maximum Int64 values, as well as whether the validation range is exclusive. The LongValidator(Int64, Int64, Boolean, Int64) constructor checks the previous three parameters and also checks whether the Int64 value is equal to a specific resolution value.

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 LongValidator type.

Imports System
Imports System.Configuration

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

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

      ' Create Long and Validator. 
      Dim testLong As Int64 = 17592186044416
      Dim minLongVal As Int64 = 1099511627776
      Dim maxLongVal As Int64 = 281474976710656
      Dim myLongValidator As LongValidator = _
       New LongValidator(minLongVal, maxLongVal, False)

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

      Try 
        ' Attempt validation.
        myLongValidator.Validate(testLong)
        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

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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