ArcGIS Pro二次开发-插入文本，图例和指北针

// Add text for title
             Coordinate2D titleTxt_ll = new Coordinate2D(4.5, 9.5);
             CIMTextSymbol arial36bold = SymbolFactory.Instance.ConstructTextSymbol(ColorFactory.Instance.BlueRGB, 80, "Arial", "Bold");
             GraphicElement titleTxtElm = LayoutElementFactory.Instance.CreatePointTextGraphicElement(newLayout, titleTxt_ll, "Census Data", arial36bold);
             titleTxtElm.SetName("Title");

             // Add north arrow
             // Reference a North Arrow in a style
             StyleProjectItem stylePrjItm = Project.Current.GetItems<StyleProjectItem>().FirstOrDefault(item => item.Name == "ArcGIS 2D");
             NorthArrowStyleItem naStyleItm = stylePrjItm.SearchNorthArrows("ArcGIS North 8")[0];

             // Set the center coordinate and create the arrow on the layout
             Coordinate2D center = new Coordinate2D(15, 7);
             NorthArrow arrowElm = LayoutElementFactory.Instance.CreateNorthArrow(newLayout, center, newMapframe, naStyleItm);
             arrowElm.SetName("New North Arrow");
             arrowElm.SetHeight(2);

 // Add legend - first build 2D envelope geometry
             Coordinate2D leg_ll = new Coordinate2D(13.5, 0.5);
             Coordinate2D leg_ur = new Coordinate2D(16.5, 4.0);
             Envelope leg_env = EnvelopeBuilder.CreateEnvelope(leg_ll, leg_ur);

             // Create legend
             Legend legendElm = LayoutElementFactory.Instance.CreateLegend(newLayout, leg_env, newMapframe);
             legendElm.SetVisible(true);
             legendElm.SetName("New Legend");

             return newLayout;
          });

         var layoutPane = await ProApp.Panes.CreateLayoutPaneAsync(newLayout);