static void Test()
{
string[,] arr =
{
{ "aakif", "25" },
{ "ali", "31" },
{ "ben", "35" },
{ "hassnain", "45" }
};
string search = "ali";
string age = arr.GetAge(search);
if ( age != null )
Console.WriteLine($"{search} age = {age}");
else
Console.WriteLine($"{search} not found");
}