using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(
\+?
(?:
(?:
9[976]\d
|
8[987530]\d
|
6[987]\d
|
5[90]\d
|
42\d
|
3[875]\d
|
2[98654321]\d
|
9[8543210]
|
8[6421]
|
6[6543210]
|
5[87654321]
|
4[987654310]
|
3[9643210]
|
2[70]
|
7
|
0
|
1
)
|
\(
(?:
9[976]\d
|
8[987530]\d
|
6[987]\d
|
5[90]\d
|
42\d
|
3[875]\d
|
2[98654321]\d
|
9[8543210]
|
8[6421]
|
6[6543210]
|
5[87654321]
|
4[987654310]
|
3[9643210]
|
2[70]
|
7
|
1
)
\))
[0-9. -]{4,14}
)(?:\b|x\d+)";
string input = @"+86-400-660-8680
+86-400-660-8680
+1 888 204 3539
1-800-667-6389
+1-400-660-8680
(877) 359-6695
800-692-7753
0365987456
+3342568795
05987213
+33 321 82
";
RegexOptions options = RegexOptions.IgnorePatternWhitespace;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx