Regex.Match(String value,String pattern).Success
using System;
using System.Text.RegularExpressions;
class RegexSubstitution
{
public static void Main()
{
string text = "Name";
if ( !Regex.Match(text,"^[A-Z][a-zA-Z]*$" ).Success )
{
Console.WriteLine( "Invalid last name");
}
}
}
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