What is the use of out in C#?

The out is a keyword in C# which is used for the passing the arguments to methods as a reference type. It is generally used when a method returns multiple values. The out parameter does not pass the property. The ref is a keyword in C# which is used for the passing the arguments by a reference.

What is in and out parameter in C#?

The in, ref, and out Modifiers ref is used to state that the parameter passed may be modified by the method. in is used to state that the parameter passed cannot be modified by the method. out is used to state that the parameter passed must be modified by the method.

What is out var in C#?

C# Language C# 7.0 Features out var declaration The out var declaration is a simple feature to improve readability. It allows a variable to be declared at the same time that is it passed as an out parameter. A variable declared this way is scoped to the remainder of the body at the point in which it is declared.

How do you return a variable in C#?

Methods can return a value to the caller. If the return type (the type listed before the method name) is not void , the method can return the value by using the return statement. A statement with the return keyword followed by a value that matches the return type will return that value to the method caller.

What is an out parameter in C?

An out-parameter represents information that is passed from the function back to its caller. The function accomplishes that by storing a value into that parameter. Use call by reference or call by pointer for an out-parameter. For example, the following function has two in-parameters and two out-parameters.

What is difference between VAR and string?

Var is used to declare Implicitly typed variable where the compiler identifies the type automatically. var can hold any type of data. String is an explicit declaration for holding string data only.