ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Layouts Namespace / MapFrame Class / GetViewCenter Method
Example

In This Topic
    GetViewCenter Method
    In This Topic
    Get the center point of the current extent of the map frame view. This method must be called on the MCT. Use QueuedTask.Run.
    Syntax
    public MapPoint GetViewCenter()
    Public Function GetViewCenter() As MapPoint

    Return Value

    Exceptions
    ExceptionDescription
    This method or property must be called within the lambda passed to QueuedTask.Run.
    Remarks
    Works for 2D or 3D maps associated with the frame
    Example
    SetAutoCameraFixedCenter
    var layout = LayoutView.Active.Layout;
    var mf = layout.GetElementsAsFlattenedList().OfType<MapFrame>()
      .First(mf => mf.Name == mapFrame);
    var autoCamera = mf.GetAutoCamera();
    autoCamera.Source = AutoCameraSource.Fixed;
    autoCamera.AutoCameraType = AutoCameraType.Center;
    
    var camera = mf.GetMapView(LayoutView.Active).Camera;
    var center = mf.GetViewCenter();
    
    //var extent = EnvelopeBuilderEx.CreateEnvelope(
    //    400748.62, 800296.4, 1310669.05, 1424520.74, mf.Map.SpatialReference);
    //autoCamera.Extent = extent;
    
    var camera2 = new CIMViewCamera()
    {
      Heading = 0,
      Pitch = -90,
      Roll = 0,
      Scale = 21169571,
      X = 855708,
      Y = 1112409,
      Z = double.NaN
    };
    autoCamera.Camera = camera2;
    var states = mf.Map.GetLayersAsFlattenedList().First(l => l.Name == "State_Polygons");
    autoCamera.IntersectLayerPath = states.URI;
    
    if (mf.ValidateAutoCamera(autoCamera) &&
      !mf.IsMapSeriesMapFrame())
      mf.SetAutoCamera(autoCamera);
    
    SetAutoCameraFixedCenterAndScale
    var layout = LayoutView.Active.Layout;
    var mf = layout.GetElementsAsFlattenedList().OfType<MapFrame>()
      .First(mf => mf.Name == mapFrame);
    var autoCamera = mf.GetAutoCamera();
    autoCamera.Source = AutoCameraSource.Fixed;
    autoCamera.AutoCameraType = AutoCameraType.CenterAndScale;
    
    var camera = mf.GetMapView(LayoutView.Active).Camera;
    var center = mf.GetViewCenter();
    
    //var extent = EnvelopeBuilderEx.CreateEnvelope(
    //    400748.62, 800296.4, 1310669.05, 1424520.74, mf.Map.SpatialReference);
    //autoCamera.Extent = extent;
    
    var camera2 = new CIMViewCamera()
    {
      Heading = 0,
      Pitch = -90,
      Roll = 0,
      Scale = 21169571,
      X = 1310669.0 + ((400748.5 - 1310669.0) / 2.0),
      Y = 800296.4 + ((1424520.74 - 800296.4) / 2.0),
      Z = double.NaN
    };
    autoCamera.Camera = camera2;
    var states = mf.Map.GetLayersAsFlattenedList().First(l => l.Name == "State_Polygons");
    //autoCamera.IntersectLayerPath = states.URI;
    
    
    if (mf.ValidateAutoCamera(autoCamera) &&
      !mf.IsMapSeriesMapFrame())
      mf.SetAutoCamera(autoCamera);
    
    SetAutoCameraFixedScale
    var layout = LayoutView.Active.Layout;
    var mf = layout.GetElementsAsFlattenedList().OfType<MapFrame>()
      .First(mf => mf.Name == mapFrame);
    var autoCamera = mf.GetAutoCamera();
    autoCamera.Source = AutoCameraSource.Fixed;
    autoCamera.AutoCameraType = AutoCameraType.Scale;
    
    var camera = mf.GetMapView(LayoutView.Active).Camera;
    var center = mf.GetViewCenter();
    
    //var extent = EnvelopeBuilderEx.CreateEnvelope(
    //    400748.62, 800296.4, 1310669.05, 1424520.74, mf.Map.SpatialReference);
    //autoCamera.Extent = extent;
    
    var camera2 = new CIMViewCamera()
    {
      Heading = 0,
      Pitch = -90,
      Roll = 0,
      Scale = 20000571,
      X = 1310669.0 + ((400748.5 - 1310669.0) / 2.0),
      Y = 800296.4 + ((1424520.74 - 800296.4) / 2.0),
      Z = double.NaN
    };
    autoCamera.Camera = camera2;
    var states = mf.Map.GetLayersAsFlattenedList().First(l => l.Name == "State_Polygons");
    //autoCamera.IntersectLayerPath = states.URI;
    
    if (mf.ValidateAutoCamera(autoCamera) &&
      !mf.IsMapSeriesMapFrame())
      mf.SetAutoCamera(autoCamera);
    
    Requirements

    Target Platforms: Windows 11, Windows 10, Windows 8.1

    See Also