26 lines
1.1 KiB
C#
26 lines
1.1 KiB
C#
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namespace System.ComponentModel.DataAnnotations {
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using System;
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using System.ComponentModel.DataAnnotations.Resources;
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using System.Text.RegularExpressions;
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[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter, AllowMultiple = false)]
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public sealed class PhoneAttribute : DataTypeAttribute {
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// see unit tests for examples
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private static Regex _regex = new Regex(@"^(\+\s?)?((?<!\+.*)\(\+?\d+([\s\-\.]?\d+)?\)|\d+)([\s\-\.]?(\(\d+([\s\-\.]?\d+)?\)|\d+))*(\s?(x|ext\.?)\s?\d+)?$", RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.ExplicitCapture);
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public PhoneAttribute()
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: base(DataType.PhoneNumber) {
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ErrorMessage = DataAnnotationsResources.PhoneAttribute_Invalid;
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}
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public override bool IsValid(object value) {
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if (value == null) {
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return true;
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}
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string valueAsString = value as string;
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return valueAsString != null && _regex.Match(valueAsString).Length > 0;
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}
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}
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}
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