Latest Contributions by MariaMaldini

I am developing a Add-ins button that do a upstream trace in a network , it works correctly without any error but it does not highlight the traced elements. I do not know how to highlight the traced elements? thanks in advance using System; using System.Collections.Generic; using System.Text; using System.IO; using ESRI.ArcGIS.esriSystem; using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.Editor; using ESRI.ArcGIS.EditorExt; using ESRI.ArcGIS.Geodatabase; using ESRI.ArcGIS.Geometry; using System.Windows.Forms; using ESRI.ArcGIS.NetworkAnalysis; namespace testNet {     public class testNet : ESRI.ArcGIS.Desktop.AddIns.Button     {         private IUtilityNetworkAnalysisExt m_utilNetExt;                  public testNet()         {             UID uidUtilNet = new UIDClass();             uidUtilNet.Value = "esriEditorExt.UtilityNetworkAnalysisExt";             m_utilNetExt = ArcMap.Application.FindExtensionByCLSID(uidUtilNet) as IUtilityNetworkAnalysisExt;                     }         protected override void OnClick()         {              try             {                                                                INetworkAnalysisExt nax = m_utilNetExt as INetworkAnalysisExt;                  ITraceTasks pTraceTasks = nax as  ITraceTasks;                  INetwork net = nax.CurrentNetwork.Network;                                                 ITraceFlowSolverGEN tfs = new TraceFlowSolverClass() as ITraceFlowSolverGEN;                  INetSolver netSolver = tfs as INetSolver;                  netSolver.SourceNetwork = net;                  INetworkAnalysisExtBarriers naxBarriers = m_utilNetExt as INetworkAnalysisExtBarriers;                  INetElementBarriers juncElemBarriers, edgeElemBarriers;                  naxBarriers.CreateElementBarriers(out juncElemBarriers, out edgeElemBarriers);                  ISelectionSetBarriers selSetBarriers;                  naxBarriers.CreateSelectionBarriers(out selSetBarriers);                  netSolver.set_ElementBarriers(esriElementType.esriETJunction, juncElemBarriers);                  netSolver.set_ElementBarriers(esriElementType.esriETEdge, edgeElemBarriers);                  netSolver.SelectionSetBarriers = selSetBarriers;                  INetworkAnalysisExtFlags naxFlags = m_utilNetExt as INetworkAnalysisExtFlags;                                   int edgeFlagCount = naxFlags.EdgeFlagCount;                  if (edgeFlagCount > 0)                  {                      IEdgeFlag[] edgeFlags = new IEdgeFlag[edgeFlagCount];                      for (int i = 0; i < edgeFlagCount; i++)                      {                          IEdgeFlagDisplay edgeFlagDisplay = naxFlags.get_EdgeFlag(i);                          IFlagDisplay flagDisplay = edgeFlagDisplay as IFlagDisplay;                          IEdgeFlag edgeFlag = new EdgeFlagClass();                          edgeFlag.Position = Convert.ToSingle(edgeFlagDisplay.Percentage);                          INetFlag netFlag = edgeFlag as INetFlag;                          netFlag.UserClassID = flagDisplay.FeatureClassID;                          netFlag.UserID = flagDisplay.FID;                          netFlag.UserSubID = flagDisplay.SubID;                          edgeFlags = edgeFlag;                      }                      tfs.PutEdgeOrigins(ref edgeFlags);                  }                                    ITraceTasks traceTasks = m_utilNetExt as ITraceTasks;                  tfs.TraceIndeterminateFlow = traceTasks.TraceIndeterminateFlow;                  IEnumNetEID resultJuncs, resultEdges;                  esriFlowElements flowElements = traceTasks.TraceFlowElements;                  if (traceTasks.TraceEnds)                                            tfs.FindFlowEndElements(esriFlowMethod.esriFMUpstream, flowElements, out resultJuncs, out resultEdges);                  else                                            tfs.FindFlowElements(esriFlowMethod.esriFMUpstream, flowElements, out resultJuncs, out resultEdges);                                                      }              catch (System.Exception excep)              {                  MessageBox.Show(excep.Message);              }         }              protected override void OnUpdate()         {                     }     } } ... View more

I am trying to add a new field and fill the field for some of rows but I face with the following error: "The index passed was not within the valid range."   My simplified codes:                                IMxDocument mxdoc = ArcMap.Application.Document as IMxDocument;                 IMap map = mxdoc.FocusMap;                 ILayer layer = map.Layer[0];                 IFeatureLayer2 featureLayer = layer as IFeatureLayer2;                 IFeatureClass flFeatureClass = featureLayer.FeatureClass;                 IFeatureCursor featureCursor = flFeatureClass.Search(null, true);                 IFeature feature2 = featureCursor.NextFeature();                 IFieldEdit2 newField = new FieldClass();                 newField.Name_2 = "name";                 newField.Editable_2 = true;                 newField.Type_2 = esriFieldType.esriFieldTypeString;                 flFeatureClass.AddField(newField);                 while (feature2 != null)                 {                     feature2.set_Value(flFeatureClass.FindField("name"), "rome");                     feature2.Store();                     feature2 = featureCursor.NextFeature();                 }               When i used "breakpoint" to find the error line.  i found out that   feature2.set_Value(flFeatureClass.FindField("name"), "rome");   is the line that causes the error (The index passed was not within the valid range).   I do not know what is wrong with set_value method. when i try to update a already created field, it work right but   when i want to create a new field and fill it with some data as mentioned codes , i encounter with the error. Thanks in advance ... View more

I am developing a Tool using Add-Ins in order to get the coordinate where user clicks on map ( through OnMouseDown event), but I want to do some operations before getting coordinates in another method. I try to explain my problem with a simple example. for example, I want to see a message box that will be called from a method ( msg method) and then user click on map and get coordinates using OnMouseDown event. my problem is that the first time that i click on tool's icon i see a message box (" hello") but the second time that i click on tool's icon, it does not show message box and tool just call OnMouseDown event. ( as i told, i do not want to have message box in  OnMouseDown event) please help, thanks in advance using System; using System.Collections.Generic; using System.Text; using System.IO; using System.Windows.Forms; namespace msg {     public class msg : ESRI.ArcGIS.Desktop.AddIns.Tool     {         public msg()         {             MessageBox.Show("hello");         }         protected override void OnMouseDown(MouseEventArgs arg)         {             //get map coordinate         }          protected override void OnUpdate()         {             Enabled = ArcMap.Application != null;         }     } } ... View more