Overview of .NET 4.0 features – C# 4.0 Named and Optional Parameters

The concept of Optional parameters is not new and exists in other languages such as C++. Infact, the functionality is a part of the .NET framework and exists is in VB.NET. Optional parameters will be introduced in C# 4.0 and can be used to call a method without having to specify all the arguments. The intent of this feature is to assist in writing concise code and in COM interoperability.