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.

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what are optional parameters in c#?

aditya shukla

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