SetCamera(IEnumerable<Layer>,Boolean) Method
Sets the map frame extent using the extent of multiple layers. This method must be called on the MCT. Use QueuedTask.Run.
Parameters
- layers
- A list of layers.
- useSelectedFeatures
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;
mf.SetCamera(env);
//Zoom out 15 percent
Camera cam = mf.Camera;
cam.Scale = cam.Scale * 1.15;
mf.SetCamera(cam);
}
}
}
});
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.