79 lines
2.5 KiB
C#
79 lines
2.5 KiB
C#
//
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// RegularExpressionAttribute.cs
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//
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// Author:
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// Atsushi Enomoto <atsushi@ximian.com>
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// Antoine Cailliau <a.cailliau@maximux.net>
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//
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// Copyright (C) 2008 Novell Inc. http://novell.com
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// Copyright (C) 20011 Maximux Scris. http://maximux.net
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Globalization;
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using System.ComponentModel;
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using System.Text.RegularExpressions;
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namespace System.ComponentModel.DataAnnotations
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{
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#if NET_4_0
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[AttributeUsage (AttributeTargets.Property|AttributeTargets.Field|AttributeTargets.Parameter, AllowMultiple = false)]
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#else
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[AttributeUsage (AttributeTargets.Property|AttributeTargets.Field, AllowMultiple = false)]
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#endif
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public class RegularExpressionAttribute : ValidationAttribute
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{
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public RegularExpressionAttribute (string pattern)
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: base(GetDefaultErrorMessage)
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{
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if (pattern == null)
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throw new ArgumentNullException("pattern");
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Pattern = pattern;
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}
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public string Pattern { get; private set; }
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static string GetDefaultErrorMessage ()
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{
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return "The field {0} must match the regular expression {1}.";
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}
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public override string FormatErrorMessage (string name)
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{
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return string.Format (ErrorMessageString, name, Pattern);
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}
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// LAMESPEC: does not throw ValidationException when value does not match the regular expression
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public override bool IsValid (object value)
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{
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if (value == null)
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return true;
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string str = (string) value;
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Regex regex = new Regex(Pattern);
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return regex.IsMatch(str);
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}
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}
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}
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