Convert method parameters into array

Question

Is there a Visual Basic.NET method that can convert method parameters into an array?

For instance instead of:

Function functionName(param1 as object, param2 as object) as object
ArrayName = {param1, param2}

you could do something like:

Function functionName(param1 as object, param2 as object) as object
ArrayName = MethodThatGetsAllFunctionParams

Just curious really.

What exactly are you trying to achieve? There's not really enough detail in your question for me to tell. What does it mean to convert them into an array? — Cody Gray - on strike, Apr 17 '11 at 15:44
Take a look @ http://stackoverflow.com/questions/3288597/is-there-a-way-to-get-an-array-of-the-arguments-passed-to-a-method — Alex K., Apr 17 '11 at 16:14

score 3 · Answer 1 · edited Dec 26 '12 at 00:39

3

Take a look at ParamArrays. I think this solves what you're asking for?

http://msdn.microsoft.com/en-us/library/538f81ec%28v=VS.100%29.aspx

EDIT:

You could initialise a custom collection using your current function signature

Public Class CustomCollection(Of T)
    Inherits System.Collections.Generic.List(Of T)

    Sub New(param1 As T, param2 As T)
        MyBase.New()
        MyBase.Add(param1)
        MyBase.Add(param2)
    End Sub
End Class

and then call the function using

Dim result = functionName(New CustomCollection(Of Object)(param1, param2))

The Function signature would be changed to:

Public Function functionName(ByVal args As CustomCollection(Of Object)) As String

edited Dec 26 '12 at 00:39

Olivier Jacot-Descombes

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answered Apr 17 '11 at 16:13

Smudge202

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No, I don't want to send an unspecified number of arguments to a method. – burntsugar Apr 17 '11 at 16:26
Note, you can remove the generics from the above and change it all to Object if you prefer. Just gives you some options on Overloading. – Smudge202 Apr 19 '11 at 11:32

score 3 · Accepted Answer · edited May 23 '17 at 10:33

3

There is no way of doing that. The language itself doesn’t allow that. You can use reflection to get the currently executing method of the StackFrame of the execution. But even then it’s still impossible to retrieve the parameter values.

The only solution is to “patch” the applications by introducing point cuts into the method call. The linked answer mentions a possibility for that.

edited May 23 '17 at 10:33

Community

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answered Apr 19 '11 at 11:33

Konrad Rudolph

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Convert method parameters into array

2 Answers2