what are optional parameters in c#?

Accepted answer

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

aditya shukla12y ago

thanks bro... c

Wim Sturkenboom12y ago

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.