StringValidator.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 / StringValidator.cs / 1305376 / StringValidator.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 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));
                }
            } 
        }
    } 
} 

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

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK