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//------------------------------------------------------------------------------
// <copyright file="StringValidator.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 {
public class StringValidator : ConfigurationValidatorBase {
private int _minLength;
private int _maxLength;
private string _invalidChars;
public StringValidator(int minLength)
: this(minLength, int.MaxValue, null) {
}
public StringValidator(int minLength, int maxLength)
: this(minLength, maxLength, null) {
}
public StringValidator(int minLength, int maxLength, string invalidCharacters) {
_minLength = minLength;
_maxLength = maxLength;
_invalidChars = invalidCharacters;
}
public override bool CanValidate(Type type) {
return (type == typeof(string));
}
public override void Validate(object value) {
ValidatorUtils.HelperParamValidation(value, typeof(string));
string data = value as string;
int len = (data == null ? 0 : data.Length);
if (len < _minLength) {
throw new ArgumentException(SR.GetString(SR.Validator_string_min_length, _minLength));
}
if (len > _maxLength) {
throw new ArgumentException(SR.GetString(SR.Validator_string_max_length, _maxLength));
}
// Check if the string contains any invalid characters
if ((len > 0) && (_invalidChars != null) && (_invalidChars.Length > 0)) {
char[] array = new char[_invalidChars.Length];
_invalidChars.CopyTo(0, array, 0, _invalidChars.Length);
if (data.IndexOfAny(array) != -1) {
throw new ArgumentException(SR.GetString(SR.Validator_string_invalid_chars, _invalidChars));
}
}
}
}
}
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