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Edit Operation Error

311
1
08-14-2023 05:29 PM
tzz_12
by
New Contributor III

I'm not sure why I keep getting this error, "Copy operation failed Edit operation failed. The value type is incompatible with the field type." I checked the value type and field type, and it's the same, both a double value and field type. I'm trying to perform some calculations using the attribute table of a featureClassA, then create a new featureClassB with the output calculations. In the featureClassA, there are numerous of null values in the dataset. I suspect it is related to the null values. What are the common reasons for this error message? I included a shorter version of my script below: 

 

foreach (var FieldID in FieldIDList)
 {

      //AWC
      Process.AggregateValues(input values here));
}
 WriteAggregateFields(FieldIDList, outGDB);
});

public async void PopulateAggregateValues(input values here)
        {
            var mv = MapView.Active;
            var newLayer = NewLayerName;
            var newLayerPath = outGDB + "\\" + newLayer;
            var dict = new Dictionary<string, object>();
            //var idList = FieldIDList;
            string Field_Low = FieldName + "_Low";
            string Field_Rep = FieldName + "_Rep";
            string Field_High = FieldName + "_High";
            var FinalLyr = mv.Map.GetLayersAsFlattenedList().OfType<FeatureLayer>().Where(fl => fl.Name.Contains(newLayer)).FirstOrDefault();
            int i = 0;


            await QueuedTask.Run(() =>
            {
                EditOperation edOp = new EditOperation();
                using (var rowCursor = AggregateLayer.Search())
                {
                    while (rowCursor.MoveNext())
                    {

                        using (var row = rowCursor.Current as Feature)
                        {
                            if (LowArea > 0)
                            {
                                dict[Field_Low] = FieldList[i].Item1;

                            }
                            else
                            {
                                dict[Field_Low] = "<Null>";
                            }
                            if (RepArea != double.NaN)
                            {
                                dict[Field_Rep] = FieldList[i].Item2;

                            }
                            else
                            {
                                dict[Field_Rep] = "<Null>";
                            }
                            if (HighArea > 0)
                            {

                                dict[Field_High] = FieldList[i].Item3;

                            }
                            else
                            {
                                dict[Field_High] = "<Null>";
                            }

                            edOp.Modify(FinalLyr, row.GetObjectID(), dict);
                            i++;



                        }
         
                    }
                }
                if (!edOp.Execute())
                {
                    MessageBox.Show($@"Copy operation failed {edOp.ErrorMessage}");
                    return;
                }
            });
        }

           
        }

 private void WriteAggregateFields(List<string> FieldIDList, string outGDB)
        {
            var AggregateLayer = SelectedAggLayer;
            var AggregateField = SelectedField;
            var newLayerPath = outGDB + "featureClassBName";



            //Populate featureClassB fields
            Process.PopulateGeomID(outGDB, "NewLayer", AggregateLayer, 
AggregateField, FieldIDList);

Process.PopulateAggregateValues(outGDB, "NewLayer", AggregateLayer, AggregateField, FieldList, "FieldName", FieldLowArea, FieldRepArea, FieldHighArea);

}

 

Thanks for your help!

 

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1 Reply
GKmieliauskas
Esri Regular Contributor

Hi,

Try to change all places where you use "<Null>" to null

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