MapX中access表图形化为mapinfo表的两种途径

       指定bindlayer.filespec就可以创建永久表，不指定则为临时表。

       Private Sub Command4_Click()

       '只能创建一个字段，GeoName,来源于City字段。当City字段不能唯一是，state字段用于限定。

       '不能创建索引

       Dim BindlayerObject As New mapxlib.BindLayer

       Dim db As DAO.Database

       Dim rs As DAO.Recordset

       Dim ds As mapxlib.Dataset

       Set db = DBEngine.WorkSpaces(0).Opendatabase("C:\Program Files\MapInfo\MapX 4.0\Data\Mapstats.mdb")

       Set rs = db.OpenRecordset("US_Cust")

       BindlayerObject.LayerName = "新图层名"

       BindlayerObject.Filespec = App.Path + "\mytab.tab" '若不指定,则为临时表

       BindlayerObject.RefColumn1 = "X"

       BindlayerObject.RefColumn2 = "Y"

       BindlayerObject.LayerType = miBindLayerTypeXY

       Set ds = Map1.Datasets.Add(miDataSetDAO, rs, "数据集名", "City", "State", BindlayerObject)

       End Sub

       2.layerInfo新建表

       layers.add lyrinfo创建好一个有完备字段的空表

       ds.rowvalues,

       lyr.addfeature ftr,rvs填入图元和属性

       Private Sub Command1_Click()

       '可以创建多个字段

       'mapx5中可以创建索引，mapx4中不可以

       Dim rs As DAO.Recordset

       Dim db As DAO.Database

       Dim flds As New MapXLib.Fields

       Dim lyrNew As MapXLib.Layer

       Dim ptNew As New MapXLib.Point

       Dim ftrNew As MapXLib.Feature

       Dim ff As MapXLib.FeatureFactory

       Dim li As New MapXLib.LayerInfo

       Dim rvs As New MapXLib.Rowvalues

       Dim ds As MapXLib.Dataset

       Set db = DBEngine.OpenDatabase("C:\Program Files\MapInfo\MapX 4.0\data\mapstats.mdb")

       Set rs = db.OpenRecordset("US_Cust")

       Set ff = Map1.FeatureFactory

       flds.AddStringField "Company", 50 ,true 'mapx5中可以创建索引，

       flds.AddStringField "Company", 50 'mapx4中不可以创建索引，

       flds.AddStringField "City", 50

       flds.AddStringField "State", 2

       flds.AddNumericField "Order_Amt", 12, 2

       li.Type = miLayerInfoTypeNewTable

       li.AddParameter "FileSpec", App.Path & "\custtab.tab"

       li.AddParameter "Name", "mycustomers"

       li.AddParameter "Fields", flds

       Map1.Layers.Add li, 1

       '到此为止，已经用access表建好mapinfo表，也设置好了字段，但是没有图元在上面，也没有记录。

       '下面从access表中x,y创建点图元，同时把其属性数据也添加进去

       '--------------------------------------------------------------------

       Set lyrNew = Map1.Layers(1)

       Set ds = Map1.Datasets.Add(miDataSetLayer, lyrNew)

       Set rvs = ds.Rowvalues(0)

       rs.MoveFirst

       Do While Not rs.EOF

       rvs.Item("Company").value = rs.Fields("Company") 'rvs.Item("Company")可写为rvs("Company")

       rvs.Item("City").value = rs.Fields("City")

       rvs.Item("State").value = rs.Fields("State")

       rvs.Item("Order_Amt").value = rs.Fields("Order_Amt")

       ptNew.Set rs.Fields("X"), rs.Fields("Y")

       Set ftrNew = ff.CreateSymbol(ptNew)

       Set ftrNew = lyrNew.AddFeature(ftrNew, rvs) ' 图元+属性，即feature+Rowvalues

       'Set ftrNew = lyrNew.AddFeature(ftrNew)

        'ftrNew.Update True, rvs

       rs.MoveNext

       Loop

       Set rs = Nothing

       Set db = Nothing

       End Sub