Modifying the Vertices of a Polyline in ArcMap using ArcObjects

Modifying the Vertices of a Polyline using ArcObjects

1.Start the Editing Mode in the Editor Toolbar

2.This will create an edit session

3.Using the editor tool select the polyline feature you want to edit

4.Click on our Custom tool

5.The vertices of our polyline will be visible

6.Save the edits

7.Stop editing and complete the session

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using ESRI.ArcGIS.ArcMapUI;
using ESRI.ArcGIS.Framework;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Editor;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;


namespace ToolTest
{
    public class poli : ESRI.ArcGIS.Desktop.AddIns.Tool
    {
        public static Boolean mousedown = false;
        public static IEditor3 meditor=null;
        IEditSketch3 editsketch = meditor as IEditSketch3;

        public poli()
        {
        }

        protected override void OnMouseDown(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
        {
            if (mousedown == false)
            {

                meditor = GetEditorFromArcMap(ArcMap.ThisApplication) as IEditor3;
                //IWorkspace workspace = (GetFeatureLayerFromLayerIndexNumber((ArcMap.Application.Document as IActiveView), 1).FeatureClass as IWorkspace);
                //if(meditor.EditState!=esriEditState.esriStateEditing)
                //meditor.StartEditing(workspace);






                IEditSketch3 editsketch = meditor as IEditSketch3;
                editsketch.GeometryType = esriGeometryType.esriGeometryPolyline;


                 IEditTaskSearch editTaskSearch = meditor as IEditTaskSearch;
 IEditTask editTask = editTaskSearch.get_TaskByUniqueName("GarciaUI_ModifyFeatureTask");

  //Set the task returned to the current edit task.
 if (editTask != null)
 {
     meditor.CurrentTask = editTask;
 }
                ISketchOperation sk = new SketchOperationClass();
                sk.Start(meditor);

             

             
            }
            if(mousedown==true)
            {
                if(editsketch.Geometry==null)
                {
                    IPolyline poly;
                    poly = editsketch as IPolyline;
                    editsketch.FinishSketch();

                }
                else
                {
                    mousedown=false;
                }


            }
       

         
        }


        protected override void OnMouseUp(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
        {
         
        }

public ESRI.ArcGIS.Editor.IEditor2 GetEditorFromArcMap(ESRI.ArcGIS.ArcMapUI.IMxApplication mxApplication)
{
  if(mxApplication == null)
  {
    return null;
  }
  ESRI.ArcGIS.esriSystem.UID uid = new ESRI.ArcGIS.esriSystem.UIDClass();
  uid.Value = "{F8842F20-BB23-11D0-802B-0000F8037368}";
  ESRI.ArcGIS.Framework.IApplication application = mxApplication as ESRI.ArcGIS.Framework.IApplication; // Dynamic Cast
  ESRI.ArcGIS.esriSystem.IExtension extension = application.FindExtensionByCLSID(uid);
  ESRI.ArcGIS.Editor.IEditor2 editor2 = extension as ESRI.ArcGIS.Editor.IEditor2; // Dynamic Cast

  return editor2;
}




public ESRI.ArcGIS.Carto.IFeatureLayer GetFeatureLayerFromLayerIndexNumber(ESRI.ArcGIS.Carto.IActiveView activeView, System.Int32 layerIndex)
{
    if (activeView == null || layerIndex < 0)
    {
        return null;
    }
    ESRI.ArcGIS.Carto.IMap map = activeView.FocusMap;
    if (layerIndex < map.LayerCount && map.get_Layer(layerIndex) is ESRI.ArcGIS.Carto.IFeatureLayer)
    {
        return (ESRI.ArcGIS.Carto.IFeatureLayer)activeView.FocusMap.get_Layer(layerIndex); // Explicit Cast
    }
    else
    {
        return null;
    }
}
public ESRI.ArcGIS.Geometry.IPointCollection4 modifyFirstVertexOfAPolyline
(ESRI.ArcGIS.Geometry.IGeometryCollection geometryCollection_Polyline,
System.Double searchRadius, System.Double offsetX, System.Double offsetY)
{
    ESRI.ArcGIS.Geometry.IPolyline polyline = (ESRI.ArcGIS.Geometry.IPolyline)
        geometryCollection_Polyline;
    ESRI.ArcGIS.Geometry.IPoint queryPoint = polyline.FromPoint;

    ESRI.ArcGIS.Geometry.IPoint hitPoint = new ESRI.ArcGIS.Geometry.PointClass();

    //Define and initialize the variables that will get populated from the .HitTest() method.
    System.Double hitDistance = 0;
    System.Int32 hitPartIndex = 0;
    System.Int32 hitSegmentIndex = 0;
    System.Boolean rightSide = false;

    ESRI.ArcGIS.Geometry.IHitTest hitTest = (ESRI.ArcGIS.Geometry.IHitTest)
        geometryCollection_Polyline;
    System.Boolean foundGeometry = hitTest.HitTest(queryPoint, searchRadius,
        ESRI.ArcGIS.Geometry.esriGeometryHitPartType.esriGeometryPartVertex,
        hitPoint, ref hitDistance, ref hitPartIndex, ref hitSegmentIndex, ref
        rightSide);

    if (foundGeometry == true)
    {
        ESRI.ArcGIS.Geometry.IGeometry geometry =
            geometryCollection_Polyline.get_Geometry(hitPartIndex);
        ESRI.ArcGIS.Geometry.IPointCollection4 pointCollection =
            (ESRI.ArcGIS.Geometry.IPointCollection4)geometry;
        ESRI.ArcGIS.Geometry.IPoint transformPoint = pointCollection.get_Point
            (hitSegmentIndex);

        ESRI.ArcGIS.Geometry.ITransform2D transform2D =
            (ESRI.ArcGIS.Geometry.ITransform2D)transformPoint;
        transform2D.Move(offsetX, offsetY);

        ESRI.ArcGIS.Geometry.IPoint afterMovePoint = (ESRI.ArcGIS.Geometry.IPoint)
            transform2D;

        //The point is not updated in the polyline until the next line is called.
        pointCollection.UpdatePoint(hitSegmentIndex, (ESRI.ArcGIS.Geometry.IPoint)
            transform2D);

        return pointCollection;
    }

    return null;

}

        protected override void OnUpdate()
        {
            Enabled = ArcMap.Application != null;
        }
    }

}

ArcGIS Python Mapping Module

Arc Python to interact with Arc-map

What is ArcPy Mapping and Why is it actually used for :

Arcpy.mapping was built for the professional GIS analyst (as well as for developers). Traditionally, the scenarios listed above had to be done using ArcObjects and it often proved to be a very difficult programming environment to learn for the average GIS professional. Arcpy.mapping is a courser-grained object model, meaning that the functions are designed in a way that a single arcpy.mapping function can replace many lines of ArcObjects code. The following is a very simple example of how arcpy.mapping can be used to reference an existing map document and export it to a PDF document with only two lines of code.

To explore the Overall Arcpy mapping Module use the following PDF:

Arcpy Python Mapping Module

Code for Getting the reference to the MXD :

YourMXD= arcpy.mapping.MapDocument("path to the MXD")

To export the above MXD to PDF using arcpy:

arcpy.mapping.ExportToPdf(YourMXD,"your pdf file")

Pointer to a MXD present on the Disk

Layout View of the Map Document

Arcpy.mapping is not a replacement for ArcObjects but rather an alternative for the different scenarios it supports. ArcObjects is still necessary for finer-grain development and application customization, whereas arcpy.mapping is intended for automating the contents of existing map documents and layer files.

Creating Geodatabases using Arcpy or Model builder

Creating Geo-databases in Arc Map

What is a Geodatabase:

• A geodatabase is the common data storage and management framework for all the ArcGIS Products. It combines Geo (spatial data) with Database (data repository) to create a central data repository for all the spatial data storage and management in your ArcGIS platform.
• It can be leveraged in desktop, server, or mobile environments and allows you to store GIS data in a central location for easy access and management.

The geodatabase offers you the ability to

• Store a rich collection of spatial data in a centralized location.
• Apply sophisticated rules and relationships to the data.
• Define advanced geospatial relational models (e.g., topologies, networks).
• Maintain integrity of spatial data with a consistent, accurate database.
• Work within a multiuser access and editing environment.
• Integrate spatial data with other IT databases.
• Easily scale your storage solution.
• Support custom features and behavior.
• Leverage your spatial data to its full potential.

Arc-map geodatabase can be created using various way:

1. Manually creating through Arc-Catalog
2. Using the Model workflow to create it Programmatic-ally
3. Using the Python integrated to Create Geodatabase Programmatic

1. Model for Creating Feature Class

Model to create Geodatabase in ArcGIS

Set the workspace and OutputFC as the Model parameter

AddField will add a column to the newly created Feature class and can be populated with the user defined values

The Search, Insert or Update cursor can be used to manipulate the values present in the new Feature class

For achieving the above functionality it is advised to write a python code using the arcpy library.

To know more detailed step by step information about the creating a feature class in the Geodatabase
Click here - Create Geodatabase Feature Class - PDF

How to create a simple python add-in tool for ArcGIS Desktop

How to create a simple python add-in for ArcGIS Desktop

TOOL USED:  Python Add-in Assistant

WORKING OF THE TOOL:

Creating a Simple python add-in assistant for ArcGIS Desktop to add a Fishnet table to the ArcMap using the python

Type of Python Add-in: Tool Type

Function: At the end of drawing a rectangle on the ArcMap a fishnet with specified rows and columns should appear on the Screen

A python add-in tool is very similar to a button. But, a tool requires user to interact with the map application based on that interaction some business logic will get executed. The Zoom In tool  in ArcMap will be a great example, when the user draws a rectangle on the ArcMap ,then the map will be redrawn with that rectangle as an extent.

Below steps will help you to create both Toolbox as well as a Tool on it

PROCEDURE:

Steps to Create a Toolbar for your Tool:

1.     To create your own toolbar. Open the Add-n assistant and Go to Add-in Contents tab and give the information about the add-in which you are going to create.
Note: A tool can reside on a Toolbar but cannot sits on a Menu

2.     Click the Add-In Contents tab and begin declaring your add-in customizations. A tool can reside on a toolbar but not on a menu. See creating an add-in toolbar for more detailed procedure.

3.     To Create the tool on your new Toolbar

Right-click the new toolbar and choose New Tool on the right click Menu.

Python addin assistant window

At once you have finished giving out the information and details about the add-in. Click on Save button at the bottom of the wizard. All the necessary files and folders will get created within the working folder of your add-in assistant.

Now it is the time to work on the main code. Go to the python script located on the install folder and open it using your Python idle. Code will appear as shown below with the class name same as your button name.
Note: Do not change the button name as it is directly linked with the button and registered in the your Config.xml file

 

Onclick() methof of the addin button class

The Onclick () method shown on idle will get executed on when the user click on the tool . But I our case the fishnet should get created whenever the user draw the tool is selected and draw an rectangle on the Map. So to do that OnRectangle () method of the python add-in will comes in to Picture. Replace on click method with OnRectangle () method as shown below:

Fishnet content added to On Rectangle method

·         The code will check for any preexistence of fishnet on the memory using the Exist() Method and deletes if anyone is already there using the Delete_Management() function.

·         CreateFishnet_management is the core function which is going to do the actual work after supply all the necessary parameters to it

·         Refresh the active view to redraw the Map and return the path of the fishnet to the calling function.

How to check for condition in Geoprocessing Service or Model Builder

How to check for if/else conditions in Geoprocessing Service

TOOL USED:  

Arc python and Script tool

Python script will be deployed in the ARC Toolbox to create the Conversion Tool 

WORKING OF THE TOOL:

Script tool is created in the ArcMap and the required input & Output Parameter are set. The script tool source is set to the custom python code present in an Python file(.py)

Out motive is to use check for the count of a features in an feature class and performing an conditional Execution

PROCEDURE:

• Open ArcMap 10.0+ 
• Create your own Geometric Network or Open your Existing Geometric Network
• Add your Geometric network to the Table of contents in the ArcMap as Shown Below

·         Create a new Model in your myToolBox .Right Click on MyToolBox > New > Model.Following window will appear on the Screen 

•    Add your desired feature class to the Model. (Right Click on any empty space and select ADD DATA  and select your feature class in the object browser)
• ·         Add Get Count and Calculate value Model from the System Toolbox Connect the model as shown below 

• ·         Now open calculate value Model and in the Expression Textbox call the function Calculate(%RowCount%)
• ·         Here %RowCount% will act as an Inline Variable and Compiler automatically replace the %RowCount% with the value of the rowcount field
• ·         At the Code block defined the function Calculate as

def calculate(row):

if row>0:

return true

else:

return false

• ·         Make the return Data type as Boolean
• ·         The output Boolean can be set as a precondition for any model. So that the Model  get executes only when the output of calculate value is true

How to create Graphical User Interface in Arcpy

To Show GUI in your Script tool of your ArcMap

Python consist of  huge number of GUI frameworks (or toolkits) available for it, from TkInter to a number of other cross-platform solutions.

In your case we going to use the default TkInter Module to access the windows form from the python script tool.

TkInter is being proposed as the most interactive and easy to program module in Python GUI framework

1. Create a new Script tool in the Arcmap's ArcCatalog window in your desired location

2. Copy the below codes in to a notepad file and save it as python .py extension

3.Go to the script tool and Right Click > Properties > Parameter
4.Browse to your newly created python code as the source file to execute

5.All is well.Start GUI python from TkInter. Happy Programming

from Tkinter import *

import datetime

from array import *

root = Tk()

logo = PhotoImage(file="Image.Gif")

w2 = Label(root,

           image=logo).grid(row=0,column=1)

explanation = """Team Geo Zoner"""

w2 = Label(root, 

          compound = CENTER,

           fg="Red",

           bg="black",

           font="Times 55 bold",

          text=explanation)

w2.grid(row=0,column=0)

p=str(datetime.datetime.now().isoformat())

texter="Your Heading Goes Here"+str(p);

w3 = Label(root, 

          compound = CENTER,

           fg="Green",

           font="Times 20 bold",

          text=texter)

w3.grid(row=1,column=0)

Parameters = ['Number of Inputs','Number of Ouputs','Number of Processing Parameters','Number of Intermediate data']

r = 2

i=1

for c in Parameters:

    Label(text=c, relief=RIDGE,width=25).grid(row=r,column=0)

    Entry(text="Value", relief=SUNKEN,width=10).grid(row=r,column=1)

    r = r + 1

    i = i + 1

root.title("GISSTUDY")

root.mainloop()

ArcObjects to add a flag to the Geometric Network .Net

Creating a Flag in ArcMap using ArcObjects .NET

1. Add a new add-in component to the CreatingOutputs solution and name the component

AddFlagTool. Select Tool as the type of add-in, set the confi guration of the tool as shown in

2. Enter the following using directives at the top of the AddFlagTool.cs fi le’s code window:

using ESRI.ArcGIS.ArcMapUI;

using ESRI.ArcGIS.Geometry;

using ESRI.ArcGIS.Display;

using ESRI.ArcGIS.Carto;

3. You are going to write the code for handling the OnMouseDown event. In other words, you want

your code to be executed when a user clicks somewhere in the main window of the software application. Because all the events and their handlers are defined in the base class of all tools(ESRI.ArcGIS.Desktop.AddIns.Tool), you have to override the necessary handlers. So write

the following code in the AddflagTool.cs file inside the definition for the AddflagTool class and outside of any method: protected override

As soon as you type these two keywords and press the spacebar, you will see the list of all available handlers.

Find OnMouseDown in the list as shown in  below Figure and press Enter.

4.On the Mouse down event call the add flag function in the another library

5.For the Add flag function add the following code in the other library addflag function

        public static void AddFlag(IPoint pPnt, IApplication app, double snapTol)

        {

            //IProgressDialogFactory pProDFact = null;

            //IStepProgressor pStepPro = null;

            //IProgressDialog2 pProDlg = null;

            //ITrackCancel pTrkCan = null;

            IGeometricNetwork gn = null;

            IPoint snappedPoint = null;

            IFlagDisplay pFlagDisplay = null;

            INetFlag startNetFlag = null;

            INetworkAnalysisExt pNetAnalysisExt = null;

            IMap pMap = null;

            UID pID = null;

            int EID = -1;

            try

            {

                pID = new UID();

                pID.Value = "esriEditorExt.UtilityNetworkAnalysisExt";

                pNetAnalysisExt = (INetworkAnalysisExt)app.FindExtensionByCLSID(pID);

                gn = pNetAnalysisExt.CurrentNetwork;

                pMap = (app.Document as IMxDocument).FocusMap;

                startNetFlag = Globals.GetJunctionFlagWithGN(ref pPnt, ref pMap, ref gn, snapTol,out snappedPoint, out EID, out  pFlagDisplay, true) as INetFlag;

                if (startNetFlag == null)

                {

                    //startNetFlag = Globals.GetEdgeFlag(ref pPnt, ref pMap, ref gnList, snapTol, ref gnIdx, out snappedPoint, out EID, out distanceAlong, out  pFlagDisplay, true) as INetFlag;

                }

                if (app != null)

                {

                    

                    Globals.AddFlagToGN(ref pNetAnalysisExt, ref  gn, ref pFlagDisplay);

                    //  pFlagDisplay

                    pNetAnalysisExt = null;

                    pID = null;

                }

            }

            catch (Exception)

            {

                

                throw;

            }

        }

5. The above function will make a call to the getJunctionflag code.create a function block called "getjunctionflag" with the class library Global  and place the below code:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using ESRI.ArcGIS.SystemUI;

using ESRI.ArcGIS.Geometry;

using ESRI.ArcGIS.GeoDatabaseUI;

using ESRI.ArcGIS.Geodatabase;

using ESRI.ArcGIS.Framework;

using ESRI.ArcGIS.esriSystem;

using ESRI.ArcGIS.Display;

using ESRI.ArcGIS.DataSourcesGDB;

using ESRI.ArcGIS.DataSourcesFile;

using ESRI.ArcGIS.CartoUI;

using ESRI.ArcGIS.Carto;

using ESRI.ArcGIS.ArcMapUI;

using ESRI.ArcGIS.ArcMap;

using ESRI.ArcGIS.NetworkAnalysis;

using ESRI.ArcGIS.NetworkAnalyst;

using ESRI.ArcGIS.EditorExt;

namespace Toolkit

{

    class Globals

    {

        public enum GNTypes

        {

            Flags = 1, Barries = 2, Results = 3

        };

        public enum flagType { EdgeFlag, JunctionFlag, EdgeBarrier, JunctionBarrier };

    

        public static IJunctionFlag GetJunctionFlagWithGN(ref IPoint point, ref IMap map, ref IGeometricNetwork gn, double snapTol, out IPoint snappedPoint, out int EID, out  IFlagDisplay pFlagDisplay, bool Flag)

        {

            //Initialize output variables

            snappedPoint = null;

            EID = -1;

            pFlagDisplay = null;

            int FCID = -1, FID = -1, subID = -1;

            IGeoDataset pDS = null;

            IPointToEID pointToEID = null;

            INetElements netElements = null;

            INetFlag junctionFlag = null;

            try

            {

                pFlagDisplay = null;

                pDS = gn.FeatureDataset as IGeoDataset;

                point.Project(pDS.SpatialReference);

                pointToEID = new PointToEIDClass() as IPointToEID;

                // find the nearest junction element to this Point

                pointToEID.GeometricNetwork = gn as IGeometricNetwork;

                pointToEID.SourceMap = map;

                pointToEID.SnapTolerance = snapTol;

                try

                {

                    pointToEID.GetNearestJunction(point, out EID, out snappedPoint);

                }

                catch (Exception ex)

                {

                }

                if (snappedPoint == null)

                    return null;

                // convert the EID to a feature class ID, feature ID, and sub ID

                netElements = gn.Network as INetElements;

                try

                {

                    netElements.QueryIDs(EID, esriElementType.esriETJunction, out FCID, out FID, out subID);

                }

                catch (Exception ex)

                {

                    return null;

                }

                //Create flag for start of trace

                junctionFlag = new JunctionFlagClass() as INetFlag;

                junctionFlag.UserClassID = FCID;

                junctionFlag.UserID = FID;

                junctionFlag.UserSubID = subID;

                if (junctionFlag is IEdgeFlag)

                {

                    pFlagDisplay = new EdgeFlagDisplayClass();

                    if (Flag)

                        pFlagDisplay.Symbol = CreateNetworkFlagBarrierSymbol(flagType.EdgeFlag) as ISymbol;

                    else

                        pFlagDisplay.Symbol = CreateNetworkFlagBarrierSymbol(flagType.EdgeBarrier) as ISymbol;

                }

                else

                {

                    pFlagDisplay = new JunctionFlagDisplayClass();

                    if (Flag)

                        pFlagDisplay.Symbol = CreateNetworkFlagBarrierSymbol(flagType.JunctionFlag) as ISymbol;

                    else

                        pFlagDisplay.Symbol = CreateNetworkFlagBarrierSymbol(flagType.JunctionBarrier) as ISymbol;

                }

                pFlagDisplay.ClientClassID = FCID;

                pFlagDisplay.FeatureClassID = FID;

                pFlagDisplay.SubID = subID;

                pFlagDisplay.Geometry = snappedPoint;

                return junctionFlag as IJunctionFlag;

            }

            catch

            {

                return null;

            }

            finally

            {

                pDS = null;

                pointToEID = null;

                netElements = null;

            }

        }

        public static ISimpleMarkerSymbol CreateNetworkFlagBarrierSymbol(flagType flgType)

        {

            ISimpleMarkerSymbol pSymbolFlag = null;

            switch (flgType)

            {

                case flagType.EdgeFlag:

                    pSymbolFlag = new SimpleMarkerSymbolClass();

                    pSymbolFlag.Style = esriSimpleMarkerStyle.esriSMSSquare;

                    pSymbolFlag.Angle = 0;

                    //pSymbolFlag.Color = 

                    pSymbolFlag.Outline = true;

                    pSymbolFlag.OutlineSize = 1;

                    //pSymbolFlag.OutlineColor = GetColor(0, 0, 0);

                    pSymbolFlag.Size = 10; //TODO: UserConfig

                    break;

                case flagType.JunctionFlag:

                    pSymbolFlag = new SimpleMarkerSymbolClass();

                    pSymbolFlag.Style = esriSimpleMarkerStyle.esriSMSCircle;

                    pSymbolFlag.Angle = 0;

                    //pSymbolFlag.Color = GetColor(0, 255, 0);

                    pSymbolFlag.Outline = true;

                    pSymbolFlag.OutlineSize = 1;

                    //pSymbolFlag.OutlineColor = GetColor(0, 0, 0);

                    pSymbolFlag.Size = 10; //TODO: UserConfig

                    break;

                case flagType.EdgeBarrier:

                    pSymbolFlag = new SimpleMarkerSymbolClass();

                    pSymbolFlag.Style = esriSimpleMarkerStyle.esriSMSDiamond;

                    pSymbolFlag.Angle = 0;

                    //pSymbolFlag.Color = GetColor(255, 0, 0);

                    pSymbolFlag.Outline = true;

                    pSymbolFlag.OutlineSize = 1;

                    //pSymbolFlag.OutlineColor = GetColor(0, 0, 0);

                    pSymbolFlag.Size = 10; //TODO: UserConfig

                    break;

                case flagType.JunctionBarrier:

                    pSymbolFlag = new SimpleMarkerSymbolClass();

                    pSymbolFlag.Style = esriSimpleMarkerStyle.esriSMSX;

                    pSymbolFlag.Angle = 0;

                    //pSymbolFlag.Color = GetColor(255, 0, 0);

                    pSymbolFlag.Outline = true;

                    pSymbolFlag.OutlineSize = 1;

                    //pSymbolFlag.OutlineColor = GetColor(0, 0, 0);

                    pSymbolFlag.Size = 10; //TODO: UserConfig

                    break;

                default:

                    pSymbolFlag = new SimpleMarkerSymbolClass();

                    pSymbolFlag.Style = esriSimpleMarkerStyle.esriSMSCircle;

                    pSymbolFlag.Angle = 0;

                    //pSymbolFlag.Color = GetColor(0, 255, 0);

                    pSymbolFlag.Outline = true;

                    pSymbolFlag.OutlineSize = 1;

                    //pSymbolFlag.OutlineColor = GetColor(0, 0, 0);

                    pSymbolFlag.Size = 10; //TODO: UserConfig

                    break;

            }

            return pSymbolFlag;

        }

        public static void AddFlagToGN(ref INetworkAnalysisExt pNetworkAnalysisExt, ref ESRI.ArcGIS.Geodatabase.IGeometricNetwork pGeomNet, ref  IFlagDisplay pFlagDsiplay)

        {

            INetworkAnalysisExtFlags pNetworkAnalysisExtFlags = null;

            try

            {

                if (pNetworkAnalysisExt.CurrentNetwork != pGeomNet)

                {

                    pNetworkAnalysisExt.CurrentNetwork = pGeomNet;

                }

                pNetworkAnalysisExtFlags = (INetworkAnalysisExtFlags)pNetworkAnalysisExt;

                if (pFlagDsiplay is IEdgeFlagDisplay)

                {

                    pNetworkAnalysisExtFlags.AddEdgeFlag(pFlagDsiplay as IEdgeFlagDisplay);

                }

                else

                {

                    pNetworkAnalysisExtFlags.AddJunctionFlag(pFlagDsiplay as IJunctionFlagDisplay);

                }

            }

            catch

            {

            }

            finally

            {

                pNetworkAnalysisExtFlags = null;

            }

        }

    }

}

6. Run code and set the default debug application as ArcMap

7. Once the ArcMap is open go to customise code and in the command tab add the tool to your window

8.click on the tool will add an flag symbol to the map(use f5 to refresh the map)

Addin Setting flow direction in Geometric Network

Addin source code for setup flow direction   

1.Create an c# object with establish flow as a function

2.Call this function from the addin on click method by passing the application reference and the type of flow direction you wish to set to your network

To know more about geometric network setting flow direction setting flow direction

Setting Flow Direction through ArcObjects Code

public static void EstablishFlow(Globals.GNFlowDirection flowDirection, IApplication app)
        {
            IProgressDialog2 progressDialogs= default(IProgressDialog2);
            IProgressDialogFactory progressDialogFactorys = null;
            IEditor editing = null;
         
            IMouseCursor appCursor = null;
            INetworkAnalysisExt netExt = null;
            UID pUID = null;
         
            List<IGeometricNetwork> geonetworklist= null;
            ITrackCancel trackCancel = null;
            Int32 int32_hWnd;
            IStepProgressor stepProgressorobj= null;
            IMxDocument mxdoc = null;
   IEditLayers eLayers = null;
   IMap pMap = null;
            try
            {




                int calcCount = 0;

                //Get editing

                editing = Globals.geteditor(ref app);

                if (editing.EditState != esriEditState.esriStateEditing)
                {
                    MessageBox.Show(Teamgeofunctions.Localizer.GetString("MustBEditg"), Teamgeofunctions.Localizer.GetString("GeoNetToolsLbl_2"));
                    return;
                }

                eLayers = editing as IEditLayers;

                //Change mouse cursor to wait - automatically changes back (ArcGIS Desktop only)
                appCursor = new MouseCursorClass();
                appCursor.SetCursor(2);

                ESRI.ArcGIS.esriSystem.IStatusBar statusBar = app.StatusBar;
                statusBar.set_Message(0, Teamgeofunctions.Localizer.GetString("GeoNetToolsWait_1"));

                //Get NA Extension in order to update the current network with the first visible network
                pUID = new UIDClass();
                pUID.Value = "esriEditorExt.UtilityNetworkAnalysisExt";
                netExt = app.FindExtensionByCLSID(pUID) as INetworkAnalysisExt;

                //Get Visible geometric networks
                pMap = editing.Map;
                geonetworklist= Globals.GetGeometricNetworksCurrentlyVisible(ref pMap);


                if (gnList.Count > 0)
                {


                    //ProgressBar
                    progressDialogFactorys= new ProgressDialogFactoryClass();

                    // Create a CancelTracker
                    trackCancel = new CancelTrackerClass();

                    // Set the properties of the Step Progressor
                    int32_hWnd = app.hWnd;
                    stepProgressorobj= progressDialogFactory.Create(trackCancel, int32_hWnd);
                    stepProgressor.MinRange = 0;
                    stepProgressor.MaxRange = gnList.Count;
                    stepProgressor.StepValue = 1;
                    stepProgressor.Message = "";
                    stepProgressor.Hide();

                    // Create the ProgressDialog. This automatically displays the dialog
                    progressDialogs= (ESRI.ArcGIS.Framework.IProgressDialog2)stepProgressor; // Explict Cast

                    // Set the properties of the ProgressDialog
                    progressDialog.CancelEnabled = false;
                    progressDialog.Description = Teamgeofunctions.Localizer.GetString("GeoNetToolsDesc_1");
                    progressDialog.Title = Teamgeofunctions.Localizer.GetString("GeoNetToolsTitle_1");
                    progressDialog.Animation = ESRI.ArcGIS.Framework.esriProgressAnimationTypes.esriProgressSpiral;

                    bool editStarted = false;
                    try
                    {// Create an edit operation enabling undo/redo
                        editing.StartOperation();
                        editStarted = true;
                    }
                    catch
                    {
                        editStarted = false;
                    }
                    IGeometricNetwork gn = null;
                    IEnumFeatureClass enumFC = null;
                    INetwork net = null;
                    IUtilityNetworkGEN unet = null;
                    IEnumNetEID edgeEIDs = null;
                    //IFeatureLayer fLayer = null;
                    try
                    {

                        for (int i = 0; i < gnList.Count; i++)
                        {

                            gn = gnList[i] as IGeometricNetwork;
                         
                            stepProgressor.Message = Teamgeofunctions.Localizer.GetString("GeoNetToolsProc_1");// +fLayer.Name;
                            //Establish flow using AncillaryRole values


                            if (flowDirection == Globals.GNFlowDirection.AncillaryRole)
                            {
                                enumFC = gn.get_ClassesByNetworkAncillaryRole(esriNetworkClassAncillaryRole.esriNCARSourceSink);
                                if (enumFC.Next() == null)
                                    MessageBox.Show(Teamgeofunctions.Localizer.GetString("GeoNetToolsError_1a") + gn.FeatureDataset.Name + Teamgeofunctions.Localizer.GetString("GeoNetToolsError_1b") + Environment.NewLine +
                                                    Teamgeofunctions.Localizer.GetString("GeoNetToolsError_1c"), Teamgeofunctions.Localizer.GetString("GeoNetToolsProc_2"));
                                else
                                {
                                    gn.EstablishFlowDirection();
                                    calcCount += 1;
                                }
                            }

                            //Establish flow direction based on digitized direction.
                            else
                            {
                                net = gn.Network;
                                unet = net as IUtilityNetworkGEN;
                                edgeEIDs = net.CreateNetBrowser(esriElementType.esriETEdge);
                                edgeEIDs.Reset(); int edgeEID;
                                for (long j = 0; j < edgeEIDs.Count; j++)
                                {
                                    edgeEID = edgeEIDs.Next();
                                    unet.SetFlowDirection(edgeEID, esriFlowDirection.esriFDWithFlow);
                                }
                                calcCount += 1;
                            }
                            stepProgressor.Step();

                        }
                    }

                    catch (Exception ex)
                    {
                        editing.AbortOperation();
                        MessageBox.Show(Teamgeofunctions.Localizer.GetString("GeoNetToolsProc_2") + "\n" + ex.Message, ex.Source);
                    }
                    finally
                    {
                        if (enumFC != null)
                            Marshal.ReleaseComObject(enumFC);

                        gn = null;
                        enumFC = null;
                        net = null;
                        unet = null;
                        edgeEIDs = null;
                        //fLayer = null;
                    }
                    if (editStarted)
                    {   // Stop the edit operation
                        if (flowDirection == Globals.GNFlowDirection.AncillaryRole)
                            editing.StopOperation(Teamgeofunctions.Localizer.GetString("GeoNetToolsProc_2"));
                        else
                            editing.StopOperation(Teamgeofunctions.Localizer.GetString("GeoNetToolsProc_3"));
                    }
                    object Missing = Type.Missing;
                    mxdoc = app.Document as IMxDocument;
                    mxdoc.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, Missing, mxdoc.ActiveView.Extent);

           
            }
            catch (Exception ex)
            {
       
                return;


            }
            finally
            {
                // delete the references to cleanup the memory
                if (progressDialogs!= null)
                    progressDialog.HideDialog();
                progressDialogs= null;
                progressDialogFactorys= null;
                editing = null;
                eLayers = null;
                appCursor = null;
                netExt = null;
                pUID = null;
                pMap = null;
                geonetworklist= null;
                trackCancel = null;

                stepProgressorobj= null;
                mxdoc = null;
            }