Ben Kim
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Group: Forum Members
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Also, since I am new to VB.NET and coming from Clarion, is there a way to check a single field for specific values instead of a long IF statement or Select...Case? Example in Clarion: IF INLIST(MyField, "Male", "Female", "Both") MESSAGE("Valid") ELSE MESSAGE("INVALID") END In Clarion I could test for multiple values with a single statement as shown above (I believe up to 25 values at a time). Is there a similar statement in VB.NET? Currently I have code like: IF MyField <> "Male" AND MyField <> "Female" AND MyField <> "Both" ... END Thank you for any ideas! Ben
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Greg McGuffey
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Group: Forum Members
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Ben, Did you know there was a general .NET forum here? Click on the home link (under your name above the Add Post, Reply buttons) and down at the bottom you'll see a .NET forum. Its just for this sort of thing. The SF developers don't care much were you post it, as they get emails for new posts (based on what Ben Chase has said), but for us normal uses, it helps I'm really curious to know if this can happen in VB.NET, BTW
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Trent Taylor
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Group: StrataFrame Developers
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There is not an INLIST method in VB.NET. Generally when I have a situation like this, I would not use a String field. This would be a integer field then I would create an Enum for each of the values. You can then do a bitwise test depending upon how you create the enum.
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Ben Kim
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Group: Forum Members
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Thanks Trent. Unfortunately we have to support a legacy database that cannot be changed. Ben
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Trent Taylor
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Group: StrataFrame Developers
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No fun. You could easily create this type of functionality by creating a shared class and a collection. Public Sub NotInheritable MyCommonTools Public Shared Function InList(ByVal TestValue as String, ParamArray TestItems() As String) As Boolean '-- Cycle through and test the values here and return out End Sub End Sub
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Ben Kim
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Group: Forum Members
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Trent, Thank you for your help. I implemented the function in a common "module.vb" file and it works like a treat. Here is the code if anyone else wants to implement the feature:
Module CommonTools Public Function InList(ByVal TestValue As String, ByVal ParamArray TestItems() As String) As Boolean Dim lLoop As IntegerDim lResult As BooleanlResult = FalseFor lLoop = LBound(TestItems) To UBound(TestItems)If TestValue.Trim = TestItems(lLoop).Trim ThenlResult = TrueExit ForEnd IfNextReturn lResultEnd FunctionEnd ModuleHere is an example on how to use the InList function: If Not InList(Me.EventType, "FULL", "ACCD", "CIT", "PARK", "FI") Then Me.AddBrokenRule(IncdTypeBOFieldNames.PathOf, "Please choose a event type.") End If
Thanks again! Ben
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Trent Taylor
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Group: StrataFrame Developers
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It looks great. The only suggestion I would make would be to replace the LBound and UBound functions as these are left in at the moment for backward compatability. The array has all of this information already within it. For Each lcItem In TestItems Next or
For lnIndex = 0 To TestItems.Length-1 Next Otherwise I think it looks great!
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Steve L. Taylor
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Group: StrataFrame Developers
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Ben another version: ''' <summary> ''' Accepts an expression and a list of values. ''' <example> ''' Inlist("FULL", "FULL", "ACCD", "CIT", "PARK", "FI") ' Returns true ''' InList(456, 23, 456, 44, 357) ' Returns true ''' </example> ''' </summary> ''' <param name="Expression"></param> ''' <param name="Items"></param> ''' <returns></returns> ''' <remarks></remarks> Public Shared Function InList(ByVal Expression As Object, ByVal ParamArray Items() As Object) As Boolean Return Array.IndexOf(Items, Expression) > -1 End Function
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Ben Kim
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Group: Forum Members
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Would I just Dim lcItem per your example as follows? Dim lcItem As String Sorry for the newbie questions! Ben
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Trent Taylor
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Group: StrataFrame Developers
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Yes. You can also do it inline. For Each lcItem As String IN TestItems Next Either case will work. Steve's example is also a very good idea as well if you don't need to do any internal processing. The only problem with using the IndexOf may be case-sensitivity. Otherwise it is definitely the quickest route.
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