Latest Contributions by PhilipKnight1

I know I'm being a word nazi here, but.... Toolbar depreciated? depreciated: decreased in value deprecated: has become superseded ... View more

void queryTask_ExecuteCompleted(object sender, QueryEventArgs e) { attribWidget.featureDataGrid1.Map = this.MapControl; attribWidget.featureDataGrid1.ItemsSource = e.FeatureSet.Features; } But I have no success neither with DataGrid nor FeatureDataGrid  ps: I don't want to make any previous selection on the map, so I don't need a graphic layer. I just want to display attributes on FeatureDataGrid Did you add a breakpoint in queryTask_ExecuteCompleted? is e.FeatureSet.Features returning results? If it's not returning anything then there's your problem. But if it is returning some features the problem might have to do with how the FeatureDataGrid is set up. For isntance, if you have AutoGenerateColumns=FALSE, then it might be unable to create the needed collumns and therefore not create any rows (just a guess). Also, A bit of advice: If it is just not working at all remove/change pieces of the example slowly and test after each one until it breaks so that way you can figure out where it's breaking and what you are doing to break it. Good luck! ... View more

Hello and Welcome! You're going to have to be more detailed with your question if you want a more detailed response. For example, what are you trying to do exactly? Are you running into issues? Or is this more of a question just about how people have used it in the past? ... View more

So it surely wasn't easy. In fact I never did get everything to work, but I did learn some things and perhaps others will be able to build upon this: My original reason for doing this original was that I didn't know what graphic I wanted to remove from being clustered until I saw what graphics were left over after clustering (by left-over I mean not clustered). I was able to cluster the graphics, but I wasn't able to do it properly. Clusters were far too close together and just sitting on top of eachother, or else they were just all gobbled together. But it also seemed that some graphics were just not getting grouped together.         public override void ClusterGraphicsAsync(IEnumerable<Graphic> graphics, double resolution)         {             int incomingTotal = graphics.Count();             int total = 0;             //TODO run on seperate cancellable thread             //BackgroundWorkers or Tasks executed on the thread pool are possible options.             //if (bw.IsBusy != true)             //{             //    bw.RunWorkerAsync();             //}             //else             //{                             //}             GraphicCollection returnGraphics = new GraphicCollection();             //Group graphics into collections that will be turned into clusters             IEnumerable<GraphicCollection> graphicGroups = groupGraphics(graphics, resolution);             GraphicCollection gCollection;             for (int i = 0; i < graphicGroups.Count(); i++ )             {                 gCollection = graphicGroups.ElementAt(i);                 if (gCollection.Count > 2)                 {                     Utility.removeTextSymbols(ref gCollection); //need to remove TextSymbols or else they will be counted                     MapPoint mp = getCenter(gCollection);                     Graphic cluster = OnCreateGraphic2(gCollection, mp, gCollection.Count);                     returnGraphics.Add(cluster);                     total += gCollection.Count;                 }                 else //should just add one TextSymbol and one GraphicSymbol                 {                     foreach (Graphic g in gCollection)                     {                         returnGraphics.Add(g);                     }                     total += 1;                 }                             }             //raise ClusteringCompleted by invoking OnClusteringCompleted             OnClusteringCompleted(returnGraphics);         }         private IEnumerable<GraphicCollection> groupGraphics(IEnumerable<Graphic> graphics, double resolution)         {             Queue<Graphic> q = new Queue<Graphic>(graphics);                        Collection<GraphicCollection> clusters = new Collection<GraphicCollection>();             int totalCount = 0;             double range = resolution * 50;             while (q.Count > 0)             {                 Graphic g = q.Dequeue();                 GraphicCollection gCollection = new GraphicCollection();                 Envelope searchEnvelope = g.Geometry.Extent;                 //expand the evelope to include the search resolution                 searchEnvelope.XMax += (60*resolution);                 searchEnvelope.YMax += (60*resolution);                 searchEnvelope.XMin -= (60*resolution);                 searchEnvelope.YMin -= (60*resolution);                 gCollection.Add(g);                 //iterate through q, finding all graphics within extent                 if (q.Count > 0)                 {                     Graphic searchG = null;                     Graphic firstSearchG = null;                     Graphic prevSearchG = null;                     //remove graphics from queue that are within searchEvelope                     while (q.Count > 0 && (searchG == null || searchG != firstSearchG || prevSearchG == null))                     {                         prevSearchG = searchG;                         searchG = q.Dequeue(); //new search graphic                         if (firstSearchG == null)                         {                             firstSearchG = searchG;                         }                         //if (searchEnvelope.Intersects(searchG.Geometry.Extent) == true)                         //if (envelopesIntersect(searchEnvelope, searchG.Geometry.Extent) == true)                         if (withinRange(g, searchG, range) == true)                         {                             if (searchG.Symbol.GetType() == typeof(ESRI.ArcGIS.Client.FeatureService.Symbols.PictureMarkerSymbol))                             {                                 gCollection.Insert(0,searchG);                             }                             else                             {                                 gCollection.Add(searchG); //send textsymbol to end of colelction, so drawn last                             }                             totalCount++;                             if (searchG == firstSearchG)                             {                                 firstSearchG = null;                             }                         }                         else                         {                             q.Enqueue(searchG);                         }                     }                 }                 clusters.Add(gCollection);             }             return clusters;         }         private bool withinRange(Graphic g1, Graphic g2, double range)         {             double a = g2.Geometry.Extent.YMax - g1.Geometry.Extent.YMax;             double b = g2.Geometry.Extent.XMax - g1.Geometry.Extent.XMax;             double c = Math.Sqrt(Math.Pow(a, 2) + Math.Pow(b, 2));             if (c <= range)             {                 return true;             }             return false;         } ... 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If you check the area, if it's in the "wrong" direction I think it should be a negative area. But I wonder if this would still be true if the polygon had holes that were larger than the filled-space? Perhaps holes are just not factored at all? ... View more

The FieldAliases is a dictionary. I would suggest looking up what a dicitonary is for a better explanation, but essentially you pass it a key/string and it will return an value/string (or object if defined as so). Most likely you want to pass it the FieldName you want the alias of and it should return that alias. ... View more

We decided to take a hammer to the situation and just create a class that builds a TextSymbol from Json... Here's the code that uses TexTSymbolBuilder             _textRenderer = (obj["drawingInfo"]["labelingInfo"]).ToString();             JArray array = JArray.Parse(_textRenderer);             JObject obj2 = JObject.Parse(array[0].ToString());             string tsym = array[0].ToString();             Graphic grtext;             foreach (Graphic graphic in featureSet.Features)             {                 Dictionary<string,string> aliases =  featureSet.FieldAliases;                 graphic.Symbol = _resultRenderer.GetSymbol(graphic);                 FrameworkElement maptip = getMapTip(graphic, aliases);                 graphic.MapTip = maptip;                 //text renderer                 grtext = new Graphic();                 grtext.Geometry = graphic.Geometry;                 grtext.Symbol = TexTSymbolBuilder.BuildSymbolFromJson(tsym, graphic); Here's the TexTSymbolBuilder code:         public static class TexTSymbolBuilder     {         public static TextSymbol BuildSymbolFromJson(string json,Graphic gr)         {             JObject obj2 = JObject.Parse(json);             string tsym = obj2["symbol"].ToString();             string lblExpression = obj2["labelExpression"].ToString().Replace("[", "").Replace("]", "");             string labelPlacement = obj2["labelPlacement"].ToString();             TextSymbol sym = new TextSymbol();             JObject objSym =( JObject)obj2["symbol"];             JObject Font = (JObject)objSym["font"];             sym.FontFamily = new FontFamily(Font["family"].ToString());             sym.FontSize = double.Parse(Font["size"].ToString());             sym.Foreground = ColorFromJson(objSym["color"].ToString());             Size labelSize = GetLabelWidth(gr.Attributes[lblExpression].ToString(),sym.FontSize);             switch (labelPlacement)             {                 case "esriServerPointLabelPlacementCenterCenter":                     sym.Text =gr.Attributes[lblExpression].ToString();                     sym.OffsetX = labelSize.Width/2;//((gr.Attributes[lblExpression].ToString().Length * sym.FontSize) / 4);                     sym.OffsetY = labelSize.Height/2;//(sym.FontSize / 2);                     break;             }             return sym;         }         private static Size GetLabelWidth(string value,double fontsize)         {             Size sz = new Size();             TextBlock blk = new TextBlock();             blk.FontSize = fontsize;             blk.Text = value;             sz.Width = blk.ActualWidth;             sz.Height = blk.ActualHeight;             return sz;         }         private static Brush ColorFromJson(string p)         {             string clipped = p.Replace("[", "").Replace("]", "");             string[] vals = clipped.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);             Color clr = Color.FromArgb(byte.Parse(vals[3]),byte.Parse(vals[0]),byte.Parse(vals[1]),byte.Parse(vals[2]));             Brush br = new SolidColorBrush(clr);             return br;         }     } Hopefully this helps anyone what ran into the same issue ... View more

"labellingInfo" contains not only the symbol but additionaly, "labelPlacement", "labelExpression",... To get the symbol, you could try: _textRenderer = (obj["drawingInfo"]["labelingInfo"]["symbol"]).ToString(); Not tested though. That code returns a ArgumentException: "Accessed JArray values with invalid key value: "symbol". Array position index expected." But I was able to get the symbol text via this code:             JObject obj2 = JObject.Parse(array[0].ToString()); string sym  = obj2["symbol"].ToString(); But, still doing this just returns null from the FromJson method. Any ideas? ... View more

Likely there are lots of possibilities. One option is to first define your maptip as an ItemsControl allowing to display a list of attributes. Something like this (for example with a datagrid): <esri:FeatureLayer.MapTip>     <sdk:DataGrid ItemsSource="{Binding}" HeadersVisibility="None"/> </esri:FeatureLayer.MapTip> Then you could develop a value converter taking an attributes dictionary as input and returning a dictionary with the attributes you want to display (how you filter the attributes is depending on your application). Then you can use this converter in XAML: <esri:FeatureLayer.MapTip>     <sdk:DataGrid ItemsSource="{Binding Converter={StaticResource myDictionaryFilterConverter}}" HeadersVisibility="None"/> </esri:FeatureLayer.MapTip> Hope this helps. Where do I put that XAML though? My graphics layer is defined in code? Will I have to move it to XAML? Or can I define the binding in the code behind? ... View more