In C#, An anonymous method is a method that doesn't contain any name which is introduced in C# 2.0. It is useful when the user wants to create an inline method and also wants to pass parameters in the anonymous method like other methods
Syntax:
delegate(ParamList){
// write Code here..
};Example
using System;
public class FindAndSolve {
public delegate void Test(string test);
// Main method
static public void Main() {
// An anonymous method with one parameter
Test objTest = delegate(string test)
{
Console.WriteLine("I like : {0}",test);
};
objTest("Cat");
}
}
Output
I like : Cat
Some Important Points are given below
- This method is also known as an inline delegate.
- Using this method you can create a delegate object without writing separate methods.
- This method can access variables present in the outer method. Such type of variables is known as Outer variables. As shown in the below example fav is the outer variable.
Example
using System;
public class FindAndSolve {
// Create a delegate
public delegate void Test(string test);
// Main method
static public void Main()
{
string str = "Dog";
// Anonymous method with one parameter
Test objTest = delegate(string test) {
Console.WriteLine("I like {0}.",test);
// Accessing variable defined
// outside the anonymous function
Console.WriteLine("And I like {0} also.", str);
};
objTest("Cat");
}
}
Output
I like Cat.
And I like Dog also.
- We can pass this method to another method that accepts delegate as a parameter. As given example:
using System;
public delegate void Test(string str);
public class FindAndSolve {
// identity method with two parameters
public static void identity(Test test, string color) {
color = " Green" + color;
test(color);
}
// Main method
static public void Main()
{
// Here anonymous method pass as
// a parameter in identity method
identity(delegate(string color) {
Console.WriteLine("The color"+ " of my Cat is {0}", color); }," Red");
}
}
Output
The color of my Cat is Green Red