Custom parameters values

[rjjebs]

I have created a function that I would like to have other developers use in their code, one of the function parameters can have 1 of several possible valid values. Is there a way when another developer references this function in their code when they are filling in the parms values to display back to them a vaild selection custom list of values to choose from (like Intellisense)

 

[JohnH]

Yes, using an enumeration, defined in code as Enum. Example:

Public Enum myOptions
   option1
   option2
   option3
End Enum

This enumeration can used as parameter type:

Public Sub method(ByVal parameter As myOptions)
 
End Sub

Not just for method, any variable can be declared as this type:

Dim x As myOptions

To combine enum values you have to mark it with the flags attribute and give each member a value to the powers of two:

<Flags()> PublicEnum myOptions
   none = 0
   option1 = 1
   option2 = 2
   option3 = 4
EndEnum

Then use bitwise operators to work with combinations of this value:

Dim x As myOptions = myOptions.option1 Or myOptions.option2
 
' x is now both value option1 and value option2
' if you show this value as string with x.ToString() it will read "option1, option2"

 

[rjjebs]

Custom parameters values - in the VB.NET

Thanks - this is what I needed and thanks for the quick response