using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^\s*([-+]?[0-9]*\.[0-9]+([eE][-+]?[0-9]+)?)$ #float
| # or
^(\d{1,2})$ # 2 digit int";
string input = @"Pass:
1
12
12.3
.3
12.3456789
+12.3
-12.3
Fail
123
12.
abc
12..34
--12.3
.
";
RegexOptions options = RegexOptions.Multiline | 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