using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?!.*\*\*$)(?!.{9})(?:[A-Za-z]{2}(?:\d*(?:\*\d*)+|\d{6})|\*)$";
string input = @"RIGHT:
*
DE*
de*
GB5*
gb5*
DE*123
DE**123
de*123
DE123456
WRONG:
**
*DE
*de
D
D*
D**
d*
DE
DE123
DE123**
de
D1*
1
1*
123*
1234
DE1234567
DE123456*";
RegexOptions options = RegexOptions.Multiline;
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