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//------------------------------------------------------------------------------
// <copyright file="SubclassTypeValidator.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
using System;
using System.Collections;
using System.IO;
using System.Reflection;
using System.Security.Permissions;
using System.Xml;
using System.Collections.Specialized;
using System.Globalization;
using System.ComponentModel;
using System.Security;
using System.Text;
using System.Text.RegularExpressions;
namespace System.Configuration {
// This class validates that the value is a subclass of a specified type
public sealed class SubclassTypeValidator : ConfigurationValidatorBase {
private Type _base;
public SubclassTypeValidator(Type baseClass) {
if (baseClass == null) {
throw new ArgumentNullException("baseClass");
}
_base = baseClass;
}
public override bool CanValidate(Type type) {
return (type == typeof(Type));
}
public override void Validate(object value) {
if (value == null) {
return;
}
// Make a check here since value.GetType() returns RuntimeType rather then Type
if (!(value is Type)) {
ValidatorUtils.HelperParamValidation(value, typeof(Type));
}
if (!_base.IsAssignableFrom((Type)value)) {
throw new ArgumentException(SR.GetString(SR.Subclass_validator_error, ((Type)value).FullName, _base.FullName));
}
}
}
}
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