As the name suggests, optional parameters are parameters which may or may not be passed to a method when the method is called. If they're not passed, then a default value is used instead. Optional parameters must always be the last parameters in a method's parameter list i.e. they can't come before a non-optional parameter. For more detail, check this link: http://msdn.microsoft.com/en-gb/library/dd264739.aspx

Parameters that you don't have to pass ;-) public void MyMethod(string strFirstname, string strLastname) When calling, you need to pass both parameters public void MyMethod(string strFirstname, string strLastname="Sturkenboom") When calling, you ony have to pass the first parameter; second parameter, if omitted in call, is set to a default.

Answers

what are optional parameters in c#?

aditya shukla

10y

869

Answers (3)

Forum Statistics

Please welcome our newest member mdrakibul hossain.
3,096,444 users have contributed to 147,391 threads and 483,654
In the past 24 hours, we have 1 new threads, 2 new posts, and 47 new users.
In last week, the most popular thread is 'How do generations (Gen0, Gen1, Gen2, LOH) work in .NET GC?'.

Upcoming Events

View all

AI Agents Conference - 2025