RegexStringValidator.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Configuration / System / Configuration / RegexStringValidator.cs / 1305376 / RegexStringValidator.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

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 RegexStringValidator : ConfigurationValidatorBase {
        private string _expression; 
        private Regex _regex;
 
        public RegexStringValidator(string regex) { 
            if (string.IsNullOrEmpty(regex)) {
                throw ExceptionUtil.ParameterNullOrEmpty("regex"); 
            }

            _expression = regex;
            _regex = new Regex(regex, RegexOptions.Compiled); 
        }
 
        public override bool CanValidate(Type type) { 
            return (type == typeof(string));
        } 

        public override void Validate(object value) {
            ValidatorUtils.HelperParamValidation(value, typeof(string));
 
            if (value == null) {
                return; 
            } 

            Match match = _regex.Match((string)value); 

            if (!match.Success) {
                throw new ArgumentException(SR.GetString(SR.Regex_validator_error, _expression));
            } 
        }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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