Empty list of string

Thanks for the reply, actually I just found the answer.  I really wasn't asking about the optional keyword, I couldn't figgure out how to set an empty list as the default for the paramater.  Here is the answer from the msdn (I wasn't reading very well):

defaultvalue

Required for Optional parameters. Any constant or constant expression that evaluates to the data type of the parameter. If the type is Object, or a class, interface, array, or structure, the default value can only be Nothing.

So in my code I simply listed, "Optional ByVal ListIDList As List(Of String) = Nothing" in my parameter list. 

I knew it was simple, I was simply just missing the answer right in front of my face. 

Thanks for the QUICK response though.

 

If you are using VB.NET, you can use keyword "optional" in front of a parameter. Every optional argument must declare a default value and there is no need of IsMissing function. For example:

Sub MyMethod(Optional ByVal i As Integer = 3)

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C#, however, does not support optional parameters. You will have to overload your methods. For example, you may have a method with three overloaded forms something like this:

public string AddParams(string str1);

public string AddParams(string str1, string str2);

public string AddParams(string str1, string str2, string str3);

Other approach is, you MUST passs a null or emptry string and in your method check the value of the parameter and if its null or empty, depending on your approach, you can ignore that parameter.