C# DateTime parameter default value

Anything other than the primitive types (such as int , byte etc) are passed by reference by default . You are passing the same StringBuilder instance to the method. They will be passed by reference but if they are immutable, there is no change on them.

In C# by default we pass the parameter by value also known as value parameter . But a parameter also can be passed by reference. To pass an argument with reference we need to use “ref” keyword. If any argument passed as reference then any change to the parameter in the called method is reflected in the calling method.

In C# by default we pass the parameter by value also known as value parameter . But a parameter also can be passed by reference. To pass an argument with reference we need to use “ref” keyword. If any argument passed as reference then any change to the parameter in the called method is reflected in the calling method.

By default, all parameters of a method are required . But in C# 4.0, the concept of optional parameters was introduced that allows developers to declare parameters as optional. That means, if these arguments are not passed, they will be ommitted from the execution. Optional parameters are not mandatory.10 Nis 2019