// C# Extension Method
// Doc: https://csharp-extension.com/en/method/1002058/string-isnotnullorempty
// @nuget: Z.ExtensionMethods
using System;
public class Program
{
public static void Main()
string [] values = {"EntityFramework", "", "SQL", "Java", null};
foreach(var str in values)
// C# Extension Method: String - IsNotNullOrEmpty
if(str.IsNotNullOrEmpty())
Console.WriteLine(str);
}