How to change the shape of a feature?

RehmSoftware · ‎05-27-2019

Hi,

I have a simple polyline feature layer and there are some polylines on it that I want to reshape/replace with new polylines and I'm having a little trouble with it. So, this code here works fine:

public async Task SetPolylineShapeAsyncViaCursor(int polylineId, ArcGISGeo.Polyline newPolyline) {
    FeatureLayer polylineFeatureLayer = //Get feature layer
    if (polylineFeatureLayer == null)
        return;

    await ArcGISTasks.QueuedTask.Run(() => {
        var queryFilter = new ArcGISData.QueryFilter();
        queryFilter.WhereClause = String.Format("{0} = {1}", "PID", polylineId);
        var cursor = polylineFeatureLayer.Search(queryFilter);
        if (cursor.MoveNext()) {
            var feature = (ArcGISData.Feature)cursor.Current;
            feature.SetShape(newPolyline);
            feature.Store();
        }
    });
}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

However, I'd very much prefer to use an EditOperation since this polyline operation is part of a bigger editing process and I eventually want to pass around an EditOperation instance that all methods use and in the end ExecuteAsync is called once. For now I'd like to have it working with a local EditOperation, but it doesn't work when I try to modify the shape via EditOperation.Reshape (it only yields an "EditOperation failed" error):

public async Task SetPolylineShapeAsyncViaReshape(int polylineId, ArcGISGeo.Polyline newPolyline) {
    FeatureLayer polylineFeatureLayer = //Get feature layer
    if (polylineFeatureLayer == null)
        return;
        
    long polylineOID = await this.GetPolylineOIDAsync(polylineId);
    if (polylineOID == -1)
        return;

    var polylineOperation = new EditOperation();
    polylineOperation.Reshape(polylineFeatureLayer, polylineOID, newPolyline);
    await polylineOperation.ExecuteAsync();
}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

It must be a small detail that's missing but I'd be glad if somebody could tell me what I'm doing wrong.

Thanks in adavance

Best Regards

Christian

Anonymous User · ‎05-28-2019

Hi Christian,

The editoperation reshape method is the equivalent to the reshape tool in the UI.

Since your looking to replace the exiting geometry with a new one you can use one of the many Modify methods instead.

This overload matches the variables you have. The dictionary of attributes is optional.

EditOperation.Modify(ArcGIS.Desktop.Mapping.Layer, long, ArcGIS.Core.Geometry.Geometry, System.Collections.Generic.Dictionary<string, object>)‍

View solution in original post

Anonymous User · ‎05-28-2019