LongValidator Class

Definition

Namespace:

System.Configuration

Assembly:

System.Configuration.ConfigurationManager.dll

Provides validation of an Int64 value.

public ref class LongValidator : System::Configuration::ConfigurationValidatorBase

public class LongValidator : System.Configuration.ConfigurationValidatorBase

type LongValidator = class
    inherit ConfigurationValidatorBase

Public Class LongValidator
Inherits ConfigurationValidatorBase

Inheritance

Object

ConfigurationValidatorBase

LongValidator

Examples

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

using System;
using System.Configuration;

namespace Microsoft.Samples.AspNet.Validators
{
  class UsingLongValidator
  {
    static void Main(string[] args)
    {
      // Display title.
      Console.WriteLine("ASP.NET Validators");
      Console.WriteLine();

      // Create Long and Validator.
      Int64 testLong =    17592186044416;
      Int64 minLongVal =  1099511627776;
      Int64 maxLongVal =  281474976710656;
      LongValidator myLongValidator = 
       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 (ArgumentException e)
      {
        // Validation failed.
        Console.WriteLine("Error: {0}", e.Message.ToString());
      }

      // Display and wait
      Console.ReadLine();
    }
  }
}

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

Remarks

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.

Constructors

LongValidator(Int64, Int64, Boolean, Int64)	Initializes a new instance of the LongValidator class.
LongValidator(Int64, Int64, Boolean)	Initializes a new instance of the LongValidator class.
LongValidator(Int64, Int64)	Initializes a new instance of the LongValidator class.

Methods

CanValidate(Type)	Determines whether the type of the object can be validated.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)
Validate(Object)	Determines whether the value of an object is valid.

See also

• ConfigurationValidatorBase