一个很费解的问题? 关于vb.net 2005 写出的polyline

fly_902

写关于绘制多义线(polyline)时:我的代码如下:

  Try
            Dim pline As Polyline = New Polyline()
            Dim dblGetArr As Array = GetFileData() // 得到数组
            For i As Integer = 0 To dblGetArr.Length - 1
                pline.AddVertexAt(i, dblGetArr(i), 0, 0, 0)
                pline.ColorIndex = 3
            Next i
            btr.AppendEntity(pline)
            trans.AddNewlyCreatedDBObject(pline, True)
            trans.Commit()
        Catch ex As Exception
            MessageBox.show(ex.Message, "CAD提示")
        Finally
            '无论是否成功建立实例,最后都要销毁
            trans.Dispose()
        End Try

最后绘出的图形时, 多义线的第一个顶点怎么总是原点啊, 不知道各位有没有遇见这个问题?