[Solved] String cannot be of zero length error [closed]

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You need to check if the area contains a hyphen. Otherwise Row.Area.Substring(0, Row.Area.IndexOf("-") + 1) will return an empty string, and passing the empty string to Replace is what is causing the error.

So (and please excuse any invalid VB.Net)

If Row.Area.Contains("-") Then
    Dim area As String = Row.Area.Substring(0, Row.Area.IndexOf("-") + 1)
    Row.Area = Row.Area.Replace(area, "")
End If

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solved String cannot be of zero length error [closed]