class WriteAllLines

{

    public static async Task ExampleAsync()

    {

        string[] lines =

        {

            "First line", "Second line", "Third line" 

        };

​

        await File.WriteAllLinesAsync("WriteLines.txt", lines);

    }

}

​

​

//////////////////

​

class WriteAllText

{

    public static async Task ExampleAsync()

    {

        string text =

            "A class is the most powerful data type in C#. Like a structure, " +

            "a class defines the data and behavior of the data type. ";

​

        await File.WriteAllTextAsync("WriteText.txt", text);

    }

}