vb.net,llblgen 2.6,adapter mode

I am using the below function to build a PredicateExpression based on a string in the form "a,b,c,d"

Works fine but when the datatype is nullable then it fails.

eg data is of type guid eg "355184d1-69cd-4fdd-8887-f87662f03aee,355184d1-69cd-4fdd-8887-f87662f03aad"

oDataType.FullName = "System.Guid" when the datatype is guid but = "System.Nullable`1[[System.Guid, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] " when it is nullable(of guid)

Is their a better method of detecting the datatype?

Private Function BuildBucket(ByVal oField As IEntityFieldCore, ByVal sIds As String, ByVal oDataType As System.Type) As PredicateExpression Dim arIds As String() Dim i As Int32 Dim bucket As New PredicateExpression If Not sIds Is Nothing AndAlso sIds.Length > 0 Then arIds = sIds.Split(",")

        If oDataType.FullName = "System.Guid" Then
            Dim groupsUIDs As Guid

            For i = 0 To arIds.Length - 1
                groupsUIDs = New Guid(arIds(i).ToString)
                bucket.AddWithOr(New FieldCompareRangePredicate(oField, Nothing, groupsUIDs))
            Next
        End If
        If oDataType.FullName = "System.String" Then
            Dim arStrings As String = ""

            If arIds.Length >= 1 Then
                If arIds.Length <> 1 Then
                    For i = 0 To arIds.Length - 1
                        arStrings = arIds(i).ToString
                        bucket.AddWithOr(New FieldCompareRangePredicate(oField, Nothing, arStrings))
                    Next
                Else
                    arStrings = arIds(0).ToString
                    bucket.AddWithOr(New FieldCompareValuePredicate(oField, Nothing, ComparisonOperator.Equal, arStrings))
                End If
            End If

        End If
        If oDataType.FullName = "System.Int32" Then
            Dim arInt32s As Int32

            For i = 0 To arIds.Length - 1
                arInt32s = arIds(i).ToString
                bucket.AddWithOr(New FieldCompareRangePredicate(oField, Nothing, arInt32s))
            Next
        End If
    End If
    Return bucket
End Function

How do you call this method?

The ActualDotNetType is stored in the FieldPersistenceInfo class, check the following thread to use similar code to get the ActualDotNetType of a field.

http://www.llblgen.com/TinyForum/Messages.aspx?ThreadID=12530

Use the SD.LLBLGen.Pro.ORMSupportClasses.GeneralUtils class' method IsNullableType(Type), to check if a type is a nullable type. So: (I assume you added the proper Imports )

Dim realType As Type = oDataType
If GeneralUtils.IsNullableType(oDataType) Then
    realType = realType.GetGenericArguments()(0)
End If

now your code should use realType.