[mapguide-users] cannot insert feature,give a favor

[knife]

    hi,everyone
       sorry ,my english is not goog. 
       this' insert feature' (update and delete can do)question has bothered
me two days.when i compiles the program with vs2005,no erro occurs. of
course the sdf can be writeable
     
      i checked the polygon:isvalid()=true,isclosed()=true,IsEmpty() =false
      but,when i checked the  void ReleaseReader(MgPropertyCollection res,
MgFeatureCommandCollection commands) ,
    i found that  "res.GetItem(i).GetPropertyType()=9,that is
MgStringProperty not MgFeatureProperty(type= 12),    so res.GetItem(i)
cannot be converted to MgFeatureProperty"

    how can i do?
 
   the following is part of my code(.net)
---------------------------------------------------------------------------------------------------------      

            MgGeometryFactory geoFac = new MgGeometryFactory();
            MgLinearRingCollection LinearRingCollection = new
MgLinearRingCollection();
            MgCoordinateCollection CoordinateCollection = new
MgCoordinateCollection();


            String[] coods = this.TextBox1.Text.Split(',');
            for (int i = 1; i <= Convert.ToInt16(coods[0])*2 ; i+=2)
            {
                double x = Convert.ToDouble(coods[i]);
                double y = Convert.ToDouble(coods[i+1]);
                MgCoordinate coordinate = geoFac.CreateCoordinateXY(x, y);
                CoordinateCollection.Add(coordinate);
                //MgPoint point = new
MgGeometryFactory().CreatePoint(coordinate);
            }
           
            MgLinearRing LinearRing =
geoFac.CreateLinearRing(CoordinateCollection);
            CoordinateCollection.Clear();
            LinearRingCollection.Add(LinearRing);
            MgPolygon Polygon = geoFac.CreatePolygon(LinearRing, null);


            //propertyCol.Add(new MgInt32Property("Autogenerated_SDF_ID",
11));
            propertyCol.Add(new MgStringProperty("Name", "it's me"));
            propertyCol.Add(new MgInt32Property("Key", 11));
            propertyCol.Add(new MgStringProperty("Url", "me,too"));

            //Polygon.
            propertyCol.Add(new MgGeometryProperty("Data",
geometryReaderWriter.Write(Polygon)));
          
            ftrCmdCol.Add(new MgInsertFeatures(lyrClass, propertyCol));

            set_ResourceWriteAble(resoureId, resourceService); // set sdf
readonly=false
           
            if (ftrCmdCol.Count >= 1)
            {
                ReleaseReader(ftrService.UpdateFeatures(resoureId,
ftrCmdCol, false), ftrCmdCol);

                layerToSave.ForceRefresh();
                map.Save(resourceService);
             }

//-----------------------
private void ReleaseReader(MgPropertyCollection res,
MgFeatureCommandCollection commands) 
    {
        
            if (res == null)
                return;
            for(int i = 0; i < res.GetCount(); i++)
            {
                 MgFeatureCommand cmd = commands.GetItem(i);
                if(cmd is MgInsertFeatures)
                {
                    if (res.GetItem(i).GetPropertyType() !=
MgPropertyType.Feature)
                   //res.GetItem(i).GetPropertyType()=9,that is
MgStringProperty not MgFeatureProperty(12)
                   //so res.GetItem(i) cannot be converted to
MgFeatureProperty
                    // does that mean the inserting action is failed?
                        return;
                    MgFeatureProperty resProp =
(MgFeatureProperty)res.GetItem(i);
                    if(resProp != null)
                    {
                        MgFeatureReader reader
=(MgFeatureReader)resProp.GetValue();
                        if(reader == null)
                            return;
                        reader.Close();
                    }
                }
            }  
        }
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