Question

I am hoping to find a way to do this in vb.net:

Say you have function call getPaint(Color). You want the call to be limited to the parameter values of (red,green,yellow). When they enter that parameter, the user is provided the available options, like how a boolean parameter functions.

Any ideas?

Answer 1

to limit a enum with a large number of values, to just a few you could do the following

C#

List<Color> allow = new List<Color> { Color.Red, Color.Green, Color.Yellow }; if (!allow.Contains(color)) {     throw new ArguementException('Invalid Color'); } 

VB

Dim allow As New List(Of Color)() allow.Add(Color.Red) allow.Add(Color.Green) allow.Add(Color.Yellow) If Not allow.Contains(color) Then Throw New ArguementException('Invalid Color') End If