Can I pass a function as a parameter in C#?

We can pass a function as a parameter inside another function with the Func delegate. The following code example shows us how we can pass a function as a parameter inside another function with the Func<> delegate in C#.

Can we pass delegate as parameter?

C# Delegate. In C#, we can also pass a method as a parameter to a different method using a delegate. We use the delegate keyword to define a delegate. Here, Name is the name of the delegate and it is taking parameter.

How do you call a Func delegate method in C#?

Func Add = Sum; This Func delegate takes two parameters and returns a single value. In the following example, we use a delegate with three input parameters. int Sum(int x, int y, int z) { return x + y + z; } Func add = Sum; int res = add(150, 20, 30); Console.

How do you call a method with parameters in another method in C#?

You can use the Action delegate type. Then you can use it like this: void MyAction() { } ErrorDBConcurrency(e, MyAction); If you do need parameters you can use a lambda expression.

What is the difference between Func and Action delegate?

An Action type delegate is the same as Func delegate except that the Action delegate doesn’t return a value. In other words, an Action delegate can be used with a method that has a void return type. It can contain minimum 1 and maximum of 16 input parameters and does not contain any output parameter.

How do you pass an event handler as a parameter?

If you want to pass a parameter to the click event handler you need to make use of the arrow function or bind the function. If you pass the argument directly the onClick function would be called automatically even before pressing the button.

Can you use a method as a parameter?

There’s no concept of a passing method as a parameter in Java from scratch. However, we can achieve this by using the lambda function and method reference in Java 8.

What is the difference between Func and delegate?

The basic difference between Func and Action delegates is that while the former is used for delegates that return value, the latter can be used for those delegates in which you don’t have any return value.

How do I call a non static method from another class in C#?

We can call non-static method from static method by creating instance of class belongs to method, eg) main() method is also static method and we can call non-static method from main() method . Even private methods can be called from static methods with class instance.

What is function overriding in C#?

Method Overriding in C# is similar to the virtual function in C++. Method Overriding is a technique that allows the invoking of functions from another class (base class) in the derived class. Creating a method in the derived class with the same signature as a method in the base class is called as method overriding.