ArcGIS Pro 3.1 API Reference Guide
ArcGIS.Desktop.Editing Namespace / EditOperation Class / Modify Method / Modify(MapMember,Int64,Dictionary<String,Object>) Method
The mapmember of the row to update.
The oid of the row to update.
The attribute values to update on the row (by field name).
Example

In This Topic
    Modify(MapMember,Int64,Dictionary<String,Object>) Method
    In This Topic
    Modify a row, updating the attribute values.
    Syntax
    Public Overloads Sub Modify( _
       ByVal mapMember As MapMember, _
       ByVal oid As Long, _
       ByVal attributes As Dictionary(Of String,Object) _
    ) 

    Parameters

    mapMember
    The mapmember of the row to update.
    oid
    The oid of the row to update.
    attributes
    The attribute values to update on the row (by field name).
    Example
    Update Annotation Text via attribute. Caveat: The TEXTSTRING Anno attribute must exist
    //See "Change Annotation Text Graphic" for an alternative if TEXTSTRING is missing from the schema
    await QueuedTask.Run(() =>
    {
        //annoLayer is ~your~ Annotation layer...
    
        // use the inspector methodology
        var insp = new Inspector();
        insp.Load(annoLayer, oid);
    
        // make sure TextString attribute exists.
        //It is not guaranteed to be in the schema
        ArcGIS.Desktop.Editing.Attributes.Attribute att = insp.FirstOrDefault(a => a.FieldName == "TEXTSTRING");
        if (att != null)
        {
            insp["TEXTSTRING"] = "Hello World";
    
            //create and execute the edit operation
            EditOperation op = new EditOperation();
            op.Name = "Update annotation";
            op.Modify(insp);
    
            //OR using a Dictionary - again TEXTSTRING has to exist in the schema
            //Dictionary<string, object> newAtts = new Dictionary<string, object>();
            //newAtts.Add("TEXTSTRING", "hello world");
            //op.Modify(annoLayer, oid, newAtts);
    
            op.Execute();
        }
    });
    Edit the attributes of a FeatureSceneLayer
    //must support editing!
    var featSceneLayer = MapView.Active.Map.GetLayersAsFlattenedList()
                       .OfType<FeatureSceneLayer>().FirstOrDefault();
    if (!featSceneLayer.HasAssociatedFeatureService || 
        !featSceneLayer.IsEditable)
      return;
    
    var ok = await QueuedTask.Run(() =>
    {
      var editOp = new EditOperation()
      {
        Name = "Edit FeatureSceneLayer Attributes",
        SelectModifiedFeatures = true
      };
      //make an inspector
      var inspector = new Inspector();
      //get the attributes for the specified oid
      inspector.Load(featSceneLayer, oid);
      inspector["PermitNotes"] = "test";//modify
      editOp.Modify(inspector);
      return editOp.Execute();//synchronous flavor
    });
    
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.0 or higher.
    See Also