[求助]请高手过目，看下鄙人的代码为什么不能实现画多段线的功能

zycw001

Private Sub CommandButton1_Click()
Dim user1 As AcadPolyline
Dim userp As AcadPoint
On Error Resume Next
    CommonDialog1.ShowOpen
    Open CommonDialog1.FileName For Input As #1
     Do While Not EOF(1)
        Line Input #1, inputdata
       a = inputdata
       ' a = Split(inputdata, ",")
        Set userp = ThisDrawing.ModelSpace.AddPoint(a)
        Set user1 = ThisDrawing.ModelSpace.AddPolyline(a)
     Loop
     Close #1
     Me.Hide
     ThisDrawing.Application.ZoomExtents
end sub
请问为什么不能实现将文本文件里的坐标通过Polyline画到当前文档中去呢！
请高手一定指教，不胜感激！
以下是我文本文件里的数据！
611366,3537816
611344,3537965
611031,3537822
611084,3537930
611124,3538024
611047,3537989
611019,3537909

sieben

1,若多段线是二维的建议使用AddLightWeightPolyline

2,使用AddLightWeightPolyline的输入参数是数组,在你的例子里应先

把所有点坐标读入,放到一个一维数组里(x1 y1 x2 y2 .....)