Understanding the anonymous Methods in c#2.0 (anonymous method)

Anonymous Methods is one of the new features of c#2.0, which allows us to create a built-in method with no method name in the code, associate code with a delegate instance, which makes the instantiation of the delegate more intuitive and convenient, and improves the readability and maintainability of the code. Here's a simple way to use anonymous methods:

Private int[] _integers = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

int[] Evenintegers = Array.findall (_integers, delegate (int integer)
{
return (integer%2 = 0);
}
);

The code above uses an anonymous method to obtain numbers that are divisible by 2 in an array, where the anonymous method is:

Delegate (int integer)
{
return (integer%2 = 0);
}

If we don't use anonymous methods, we need to create a specific method, as follows:

Private int[] _integers = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

int[] Evenintegers = Array.findall (_integers, IsEven);

private bool IsEven (int integer)
{
return (integer%2 = 0);
}

Anonymous methods are easier to use and are not invoked elsewhere, and we can use anonymous methods like this:

Button1. Click + =

Delegate
{
MessageBox.Show ("Hello");
};