Export (0) Print
Expand All
This topic has not yet been rated - Rate this topic

IntegerValidator Class

Provides validation of an Int32 value.

Namespace:  System.Configuration
Assembly:  System.Configuration (in System.Configuration.dll)
public class IntegerValidator : ConfigurationValidatorBase

The IntegerValidator class is used to ensure that an integer meets specific criteria. The criteria for validation are established when an instance of the IntegerValidator class is created. The IntegerValidator constructor with two parameters ensures that the integer being verified adheres to both a minimum and a maximum value. The IntegerValidator constructor with three parameters checks both the minimum and maximum Int32 values, as well as whether the value to be validated is within the specified range. The IntegerValidator constructor with four parameters checks the previous three parameters and also checks whether the Int32 value is equal to a specific resolution.

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 IntegerValidator type.

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

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.