IntegerValidator 类

定义

public ref class IntegerValidator : System::Configuration::ConfigurationValidatorBase

public class IntegerValidator : System.Configuration.ConfigurationValidatorBase

type IntegerValidator = class
    inherit ConfigurationValidatorBase

Public Class IntegerValidator
Inherits ConfigurationValidatorBase

继承

Object

ConfigurationValidatorBase

IntegerValidator

示例

下面的代码示例演示如何使用 IntegerValidator 类型。

using System;
using System.Configuration;

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

            Console.WriteLine(
                "Set mininum and maximum of 1 and 10 inclusive");

            // Create Validator for the range of 1 to 10 inclusive
            int minIntVal = 1;
            int maxIntVal = 10;
            bool exclusive = false;
            IntegerValidator integerValidator =
                new IntegerValidator(minIntVal, maxIntVal, exclusive);

            int testInt = 0;
            ValidateInteger(integerValidator, testInt);
            testInt = 1;
            ValidateInteger(integerValidator, testInt);
            testInt = 5;
            ValidateInteger(integerValidator, testInt);

            Console.WriteLine();
            Console.WriteLine(
                "Set mininum and maximum of 1 and 10 exclusive");

            // Create Validator for the range of 1 to 10 exclusive
            exclusive = true;
            integerValidator =
                new IntegerValidator(minIntVal, maxIntVal, exclusive);

            testInt = 0;
            ValidateInteger(integerValidator, testInt);
            testInt = 1;
            ValidateInteger(integerValidator, testInt);
            testInt = 5;
            ValidateInteger(integerValidator, testInt);

            Console.WriteLine();
            Console.WriteLine(
                "Determine if an object to validate can be validated.");

            object testObjectToValidate = "a";
            Console.WriteLine("Can validate object of type {0}: {1}",
                testObjectToValidate.GetType(),
                integerValidator.CanValidate(testObjectToValidate.GetType()));
            testObjectToValidate = new int();
            Console.WriteLine("Can validate object of type {0}: {1}",
                testObjectToValidate.GetType(),
                integerValidator.CanValidate(testObjectToValidate.GetType()));

            // Leave output on screen until enter is pressed.
            Console.ReadLine();
        }

        private static void ValidateInteger(IntegerValidator integerValidator, int valuetoValidate)
        {
            Console.Write("Validating integer value of {0}:  ", valuetoValidate);
            try
            {
                integerValidator.Validate(valuetoValidate);
                Console.WriteLine("Validated.");
            }
            catch (ArgumentException e)
            {
                Console.WriteLine("Failed validation.  Message: {0}", e.Message.ToString());
            }
        }
    }
}

Imports System.Configuration

Namespace Microsoft.Samples.AspNet.Validators
    Module UsingIntegerValidator
        Public Sub Main()

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

            Console.WriteLine( _
                "Set mininum and maximum of 1 and 10 inclusive")

            ' Create Validator for the range of 1 to 10 inclusive
            Dim minIntVal As Int32 = 1
            Dim maxIntVal As Int32 = 10
            Dim exclusive As Boolean = False
            Dim validator As IntegerValidator = _
                New IntegerValidator(minIntVal, maxIntVal, exclusive)

            Dim testInt As Integer = 0
            ValidateInteger(validator, testInt)
            testInt = 1
            ValidateInteger(validator, testInt)
            testInt = 5
            ValidateInteger(validator, testInt)

            Console.WriteLine()
            Console.WriteLine( _
                "Set mininum and maximum of 1 and 10 exclusive")

            ' Create Validator for the range of 1 to 10 exclusive
            exclusive = True
            validator = _
                New IntegerValidator(minIntVal, maxIntVal, exclusive)

            testInt = 0
            ValidateInteger(validator, testInt)
            testInt = 1
            ValidateInteger(validator, testInt)
            testInt = 5
            ValidateInteger(validator, testInt)

            Console.WriteLine()
            Console.WriteLine( _
                "Determine if an object to validate can be validated.")

            Dim testObjectToValidate As Object = "a"
            Console.WriteLine("Can validate object of type {0}: {1}", _
                testObjectToValidate.GetType(), _
                validator.CanValidate(testObjectToValidate.GetType()))
            testObjectToValidate = New Integer()
            Console.WriteLine("Can validate object of type {0}: {1}", _
                testObjectToValidate.GetType(), _
                validator.CanValidate(testObjectToValidate.GetType()))

            ' Leave output on screen until enter is pressed.
            Console.ReadLine()
        End Sub

        Sub ValidateInteger(ByVal validator As IntegerValidator, ByVal valueToValidate As Integer)
            Console.Write("Validating integer value of {0}:  ", valueToValidate)
            Try
                validator.Validate(valueToValidate)
                Console.WriteLine("Validated.")
            Catch e As ArgumentException
                Console.WriteLine("Failed validation.  Message: {0}", e.Message.ToString())
            End Try
        End Sub
    End Module
End Namespace

注解

类 IntegerValidator 用于确保整数满足特定条件。 创建 类的实例时， IntegerValidator 将建立验证条件。 具有两个参数的 IntegerValidator 构造函数可确保所验证的整数同时遵循最小值和最大值。 具有三个参数的 IntegerValidator 构造函数会检查最小值和最大值 Int32 ，以及要验证的值是否在指定范围内。 具有四个参数的 IntegerValidator 构造函数检查前三个参数， Int32 并检查值是否等于特定分辨率。

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

构造函数

方法

适用于

另请参阅

• ConfigurationValidatorBase