ArcGIS Pro 3.2 API Reference Guide
ArcGIS.Desktop.Layouts Namespace / MapFrame Class / SetCamera Method / SetCamera(IEnumerable<Layer>,Boolean) Method
A list of layers.

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    SetCamera(IEnumerable<Layer>,Boolean) Method
    In This Topic
    Sets the map frame extent using the extent of multiple layers. This method must be called on the MCT. Use QueuedTask.Run.
    Public Overloads Sub SetCamera( _
       ByVal layers As IEnumerable(Of Layer), _
       Optional ByVal useSelectedFeatures As Boolean _


    A list of layers.
    This method or property must be called within the lambda passed to QueuedTask.Run.
    SetCamera will have no effect a map frame's extent being driven by a map series.
    Change map frame extent to selected features in multiple layers
    //Change the extent of a map frame to the selected features multiple layers.
    //Perform on the worker thread
    await QueuedTask.Run(() =>
      //Reference MapFrame
      MapFrame mf = layout.FindElement("Map Frame") as MapFrame;
      //Reference map, layers and create layer list
      Map m = mf.Map;
      FeatureLayer fl_1 = m.FindLayers("GreatLakes").First() as FeatureLayer;
      FeatureLayer fl_2 = m.FindLayers("States_WithRegions").First() as FeatureLayer;
      var layers = new[] { fl_1, fl_2 };
      //IEnumerable<Layer> layers = m.Layers;  //This creates a list of ALL layers in map.
      //Set the map frame extent to the selected features in the list of layers
      mf.SetCamera(layers, true);
    Change map frame extent to single feature with 15 percent buffer
    //Change map frame extent to single feature with 10 percent buffer
    //Process on the worker thread
    await QueuedTask.Run(() =>
      //Reference the mapframe and its associated map
      MapFrame mf = layout.FindElement("Map Frame") as MapFrame;
      Map m = mf.Map;
      //Reference a feature layer and build a query (to return a single feature)
      FeatureLayer fl = m.FindLayers("GreatLakes").First() as FeatureLayer;
      QueryFilter qf = new QueryFilter();
      string whereClause = "NAME = 'Lake Erie'";
      qf.WhereClause = whereClause;
      //Zoom to the feature
      using (ArcGIS.Core.Data.RowCursor rowCursor = fl.Search(qf))
        while (rowCursor.MoveNext())
          //Get the shape from the row and set extent
          using (var feature = rowCursor.Current as ArcGIS.Core.Data.Feature)
            Polygon polygon = feature.GetShape() as Polygon;
            Envelope env = polygon.Extent as Envelope;
            //Zoom out 15 percent
            Camera cam = mf.Camera;
            cam.Scale = cam.Scale * 1.15;

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also