2 // System.Configuration.StringValidator.cs
5 // Lluis Sanchez Gual (lluis@novell.com)
7 // Permission is hereby granted, free of charge, to any person obtaining
8 // a copy of this software and associated documentation files (the
9 // "Software"), to deal in the Software without restriction, including
10 // without limitation the rights to use, copy, modify, merge, publish,
11 // distribute, sublicense, and/or sell copies of the Software, and to
12 // permit persons to whom the Software is furnished to do so, subject to
13 // the following conditions:
15 // The above copyright notice and this permission notice shall be
16 // included in all copies or substantial portions of the Software.
18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
31 namespace System.Configuration
33 public class StringValidator: ConfigurationValidatorBase
35 char[] invalidCharacters;
39 public StringValidator (int minLength)
41 this.minLength = minLength;
42 maxLength = int.MaxValue;
45 public StringValidator (int minLength, int maxLength)
47 this.minLength = minLength;
48 this.maxLength = maxLength;
51 public StringValidator (int minLength, int maxLength, string invalidCharacters)
53 this.minLength = minLength;
54 this.maxLength = maxLength;
55 if (invalidCharacters != null)
56 this.invalidCharacters = invalidCharacters.ToCharArray ();
59 public override bool CanValidate (Type type)
61 return type == typeof(string);
64 public override void Validate (object value)
66 string s = (string) value;
67 if (s.Length < minLength)
68 throw new ArgumentException ("The string must be at least " + minLength + " characters long.");
69 if (s.Length > maxLength)
70 throw new ArgumentException ("The string must be no more than " + maxLength + " characters long.");
71 if (invalidCharacters != null) {
72 int i = s.IndexOfAny (invalidCharacters);
74 throw new ArgumentException (String.Format ("The string cannot contain any of the following characters: '{0}'.", invalidCharacters));