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                                  • This false positive is only reported, when using an OrElse-Condition in a Null-Check an using the checked variable in a For-Each-Statement. Please see following example:

                                    [VB.NET]
                                    Public Class Class1 Public Function Foo() As Integer Dim list As String() = Nothing If (list Is Nothing) OrElse (list.Count = 0) Then list = {"Item"} End If 'CRR0027 (false positive) For Each listItem As String In list 'Do something Next 'No CRR0027 Return list.Count End Function Public Function Bar() As Integer Dim list As String() = Nothing If (list Is Nothing) Then list = {"Item"} ElseIf (list.Count = 0) Then list = {"Item"} End If 'No CRR0027 For Each listItem As String In list 'Do something Next 'No CRR0027 Return list.Count End Function End Class
                                • Alexander K (DevExpress) 09.24.2018

                                  Hi Robert,

                                  Thank you for providing the code sample. I have reproduced this issue with the "Possible System.NullReferenceException" diagnostic false positive. We are working on it and will notify you on our progress.

                                1 Solution

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                                Fixed: