Public Function func_concat(ByVal frml_count As Integer, ByVal frml_time As Integer) As String
Dim sp As TimeSpan
Dim output As String = Nothing
sp = TimeSpan.FromSeconds(frml_time)
output = frml_count & " / " & sp //***
Return output
End Function
//*** This line is blue underline and on mouse hover, it displays Operator & is not defined for 'string' and System.Timespan
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