public void Load( 
   Table table,
   long oid
)

await QueuedTask.Run(() =>
{
  var sel = MapView.Active.Map.GetSelection();

  //Read a raster from a raster field as an InteropBitmap
  //the bitmap can then be used as an imagesource or written to disk
  var insp = new ArcGIS.Desktop.Editing.Attributes.Inspector();
  insp.Load(sel.ToDictionary().Keys.First(), sel.ToDictionary().Values.First());
  var ibmp = insp["Photo"] as System.Windows.Interop.InteropBitmap;
});

await QueuedTask.Run(() =>
{
  var sel = MapView.Active.Map.GetSelection();

  //Insert an image into a raster field
  //Image will be written with no compression
  var insp = new ArcGIS.Desktop.Editing.Attributes.Inspector();
  insp.Load(sel.ToDictionary().Keys.First(), sel.ToDictionary().Values.First());
  insp["Photo"] = @"e:\temp\Hydrant.jpg";

  var op = new EditOperation() { Name = "Raster Inspector" };
  op.Modify(insp);
  if (!op.IsEmpty)
  {
    var result = op.Execute(); //Execute and ExecuteAsync will return true if the operation was successful and false if not
  }
});

{
  var oid = 1;

  // See "Change Annotation Text Graphic" for an alternative if TEXTSTRING is missing from the schema

  // Note: QueuedTask is required to access the Inspector
  {
    // use the inspector methodology
    var insp = new Inspector();
    insp.Load(annotationLayer, 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(annotationLayer, oid, newAtts);

      op.Execute();
    }
  }
}

{
  //must support editing!
  if (!featSceneLayer.HasAssociatedFeatureService ||
      !featSceneLayer.IsEditable)
    return;

  // Note: call within 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);
    editOp.Execute();//synchronous flavor
  }
}

{
  //assume the geometry used in SelectFeaturesEx() is coming from a 
  //map tool...
  //SketchType = SketchGeometryType.Rectangle;
  //SketchOutputMode = SketchOutputMode.Screen;

  // Note: call within QueuedTask.Run()
  {
    var result = MapView.Active.SelectFeaturesEx(geometry);
    //Get scene layers with selections
    var scene_layers = result.ToDictionary<FeatureSceneLayer>();
    foreach (var kvp in scene_layers)
    {
      var scene_layer = kvp.Key as FeatureSceneLayer;
      var sel_oids = kvp.Value;
      //If there are attributes then get them
      if (scene_layer.HasAssociatedFeatureService)
      {
        var insp = new Inspector();
        foreach (var objectid in sel_oids)
        {
          insp.Load(scene_layer, objectid);
          //TODO something with retrieved attributes
        }
      }
    }
  }
}