Error in inserting a picture into New DataTable

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VB

ASP.NET

I am trying to retrieve a picture I saved my database and store in a new datatable "Answered", but any time the codes run I get this error-"Error Iconvertible: cannot convert sqldb bytes to type bytes". The code I am using is given below, please help me overcome this error.

dt = New DataTable("Answered")
            dt.Columns.Add("Serial", GetType(Integer))
            dt.Columns.Add("question", GetType(String))
            dt.Columns.Add("choice1", GetType(String))
            dt.Columns.Add("choice2", GetType(String))
            dt.Columns.Add("choice3", GetType(String))
            dt.Columns.Add("choice4", GetType(String))
            dt.Columns.Add("correct", GetType(String))
            dt.Columns.Add("questionImage", GetType(Bytes))
            dt.Columns.Add("selected", GetType(Integer))


            'this code is for adding to the table TEST
            Dim r As DataRow

             For Each r In ds.Tables("vExamQuestionsda").Rows
                dr = dt.NewRow
                dr("Serial") = dt.Rows.Count + 1
                dr("question") = r.Item("question")
                dr("choice1") = r.Item("choice1")
                dr("choice2") = r.Item("choice2")
                dr("choice3") = r.Item("choice3")
                dr("choice4") = r.Item("choice4")
                dr("correct") = r.Item("correct")
                dr("questionImage") = r.Item("questionImage")
                dr("selected") = -1
                dt.Rows.Add(dr)

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