Latest Contributions by CharlesMacleod

You want to use the LayerDocument class. Your workflow will be similar to that shown here in this code snippet: apply-symbology-to-a-layer-from-a-layer-file (there are also a number of other snippets on the LayerDocument reference page).    ... View more

So width is a slightly ambiguous term. If you mean the width of the line symbol being used then the answer is it depends. If your features are being symbolized with a "simple" line symbol, then yes. Simply access the stroke layer(s) and retrieve the (max) width. The width will be in points and will need to be converted to the units of the map if you want the width in map units. For more complicated line symbology with multiple layers and various geometric offsets applied, visual variables, etc, etc then it could be much more difficult. So, this is the simple case, assuming a UVR and we are retrieving the overall max width - u will need to modify if u are interested in just the max width of a particular class (or group):     //access the layer CIM Definition //QTR.Run(()=> ... var def = featLayer.GetDefinition() as CIMFeatureLayer; var uvr = def.Renderer as CIMUniqueValueRenderer; double maxWidth = 0.0; foreach (var group in uvr.Groups) { foreach (var valclass in group.Classes) { var symbol = valclass.Symbol as CIMLineSymbol; if (symbol == null) continue; var sym_layers = ((CIMLineSymbol)symbol).SymbolLayers.ToList(); foreach (var sl in sym_layers) { //assuming no offsets, etc. if (sl is CIMStroke stroke) { maxWidth = Math.Max(maxWidth, stroke.GetWidth()); //TODO - convert width in points to map units as needed public static class CIMStrokeExtensions { public static double GetWidth(this CIMStroke cimstroke) { if (cimstroke is CIMSolidStroke) return ((CIMSolidStroke) cimstroke).Width; else if (cimstroke is CIMPictureStroke) return ((CIMPictureStroke)cimstroke).Width; else if (cimstroke is CIMGradientStroke) return ((CIMGradientStroke)cimstroke).Width; return 0; }       You could also attempt to calculate the width using the graphic outline - a polygon generated from the feature and its renderer that "matches" the graphical outline of the given feature (whether point, line, poly, or anno).  Essentially, the outline polygon is equivalent to the masking polygon for "that" feature. The mask polygon will take into consideration all aspects of the renderer + visual variables, etc. so it is much more sophisticated but...it is a polygon and it is not necessarily straightforward to derive the feature "width" depending on the underlying shape/curvature of a particular line. To retrieve the graphical outline of a feature: featLayer.GetDrawingOutline(....)  (note: this was QueryDrawingOutline at 2.x but the usage was the same)       //QTR.Run(()=> .. var outline = featLayer.QueryDrawingOutline(oid, MapView.Active, DrawingOutlineType.Exact) as Polygon;           ... View more

I assume u mean the graphics added to a layout or graphics layer? At Pro 3.0+ use: ArcGIS.Desktop.Layouts.Events.ElementEvent  ArcGIS.Desktop.Layouts.Events.ElementEventArgs.Hint of ElementEventHint.PlacementChanged so, something like: ArcGIS.Desktop.Layouts.Events.ElementEvent.Subscribe((args) => { var elems = args.Container.GetSelectedElements(); switch (args.Hint){ ... case ElementEventHint.PlacementChanged: //TODO - handle element move if the elements are //graphic elements ... View more

Karen, looks like there is a MinWidth set by the style so u have to override that. Here's an example:   <UserControl x:Class="....> <UserControl.Resources> ... </UserControl.Resources> <Grid> ... <WrapPanel Orientation="Horizontal" VerticalAlignment="Bottom"> <Button Content="30" Width="30" MinWidth="30" Style="{DynamicResource Esri_Button}" Margin="2" VerticalAlignment="Center"/> <Button Content="40" Width="40" MinWidth="40" Style="{DynamicResource Esri_Button}" Margin="2" VerticalAlignment="Center"/> <Button Content="50" Width="50" MinWidth="50" Style="{DynamicResource Esri_Button}" Margin="2" VerticalAlignment="Center"/> <Button Content="60" Width="60" MinWidth="60" Style="{DynamicResource Esri_Button}" Margin="2" VerticalAlignment="Center"/> <Button Content="70" Width="70" Style="{DynamicResource Esri_Button}" Margin="2" VerticalAlignment="Center"/> <Button Content="80" Width="80" Style="{DynamicResource Esri_Button}" Margin="2" VerticalAlignment="Center"/> <Button Content="90" Width="90" Style="{DynamicResource Esri_Button}" Margin="2" VerticalAlignment="Center"/> <Button Content="100" Width="100" Style="{DynamicResource Esri_Button}" Margin="2" VerticalAlignment="Center"/> </WrapPanel> </Grid> </UserControl> ... View more

This has been added to the API on LayoutView class at the next release 3.1. In the meantime, u can use this code snippet as a basis for a workaround. 4 conditions must be true in order to activate a map frame: 1. You must be on the UI thread 2. The Layout view (containing the relevant map frame) must be the active view 3. The map frame to be activated must be the LayoutView.Active.ActiveMapFrame 4. The LayoutView.Active.ActiveMapFrame.Map must not be null (meaning it has an empty map frame) If these conditions are met you can invoke the "esri_layouts_activateMap" command which will activate the LayoutView.Active.ActiveMapFrame.   internal class ActivateMapFrameBtn: Button { protected override void OnClick() { //1. must be on the GUI - dont switch to QueuedTask //2. Layout view must be active! if (LayoutView.Active == null) return; //3. LayoutView.Active.ActiveMapFrame is the frame that will // be activated var map_frameName = "Map Frame"; if (LayoutView.Active.ActiveMapFrame == null || LayoutView.Active.ActiveMapFrame.Name != map_frameName) { //simply select it to make it the active one var selFrame = LayoutView.Active.Layout.GetElementsAsFlattenedList() .OfType<MapFrame>().FirstOrDefault(mf => mf.Name == map_frameName); if (selFrame == null) return; //not found LayoutView.Active.Layout.SelectElement(selFrame); } //4. Does the ActiveMapFrame have a valid map? if (LayoutView.Active.ActiveMapFrame?.Map == null) return; //invalid map frame - probably empty //esri_layouts_activateMap - activate //esri_layouts_deactivateMap - deactivate //Do the activation var plugin = FrameworkApplication.GetPlugInWrapper("esri_layouts_activateMap") as System.Windows.Input.ICommand; if (plugin.CanExecute(null)) plugin.Execute(null); } }         ... View more