LongValidator 类

定义

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

public class LongValidator : System.Configuration.ConfigurationValidatorBase

type LongValidator = class
    inherit ConfigurationValidatorBase

Public Class LongValidator
Inherits ConfigurationValidatorBase

继承

Object

ConfigurationValidatorBase

LongValidator

示例

下面的代码示例演示如何使用该 LongValidator 类型。

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

注解

用于 LongValidator 确保 long （64 位有符号整数）满足特定条件。 创建类实例 LongValidator 时，将建立验证条件。 构造 LongValidator(Int64, Int64) 函数可确保 long 正在验证的值同时遵循最小长度和最大长度。 构造 LongValidator(Int64, Int64, Boolean) 函数检查最小值和最大值 Int64 ，以及验证范围是否是独占的。 构造 LongValidator(Int64, Int64, Boolean, Int64) 函数检查前面的三个参数，并检查该值是否 Int64 等于特定的解析值。

该方法 CanValidate 确定要验证的对象类型是否与预期类型匹配。 要验证的对象作为方法的参数 Validate 传递。

另请参阅

• ConfigurationValidatorBase