C# Syntax - Example of a Lambda Expression - ForEach() over Generic List

Question

First, I know there are methods off of the generic List<> class already in the framework do iterate over the List<>.

But as an example, what is the correct syntax to write a ForEach method to iterate over each object of a List<>, and do a Console.WriteLine(object.ToString()) on each object. Something that takes the List<> as the first argument and the lambda expression as the second argument.

Most of the examples I have seen are done as extension methods or involve LINQ. I'm looking for a plain-old method example.

Answer 1

public void Each<T>(IEnumerable<T> items, Action<T> action)
{
    foreach (var item in items)
        action(item);
}

... and call it thusly:

Each(myList, i => Console.WriteLine(i));

Answer 2

The above could also be written with less code as:

new List<SomeType>(items).ForEach(
    i => Console.WriteLine(i)
);

This creates a generic list and populates it with the IEnumerable and then calls the list objects ForEach.

Answer 3

You can traverse each string in the list and even you can search in the whole generic using a single statement this makes searching easier.

public static void main(string[] args) { List names = new List();

names.Add(“Saurabh”); names.Add("Garima"); names.Add(“Vivek”); names.Add(“Sandeep”);

string stringResult = names.Find( name => name.Equals(“Garima”)); }