# XGMLReader

VTKExamples/CSharp/InfoVis/XGMLReader

### Description

This example reads and displays the graph from a gml file. You can test this with VTKData/Data/Infovis/fsm.gml.
A tutorial on how to setup a Windows Forms Application utilizing ActiViz.NET can be found here: Setup a Windows Forms Application to use ActiViz.NET

### Code

XGMLReader.cs

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Windows.Forms;
    using System.Diagnostics;
    using System.IO;

    using Kitware.VTK;

    namespace ActiViz.Examples {
       public partial class Form1 : Form {
          public Form1() {
             InitializeComponent();
          }

          private void renderWindowControl1_Load(object sender, EventArgs e) {
             try {
                XGMLReader();
             }
             catch(Exception ex) {
                MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK);
             }
          }

          private void XGMLReader() {
             // Path to vtk data must be set as an environment variable
             // VTK_DATA_ROOT = "C:\VTK\vtkdata-5.8.0"
             vtkTesting test = vtkTesting.New();
             string root = test.GetDataRoot();
             string filePath = System.IO.Path.Combine(root, @"Data\Infovis\fsm.gml");

             vtkXGMLReader reader = vtkXGMLReader.New();
             reader.SetFileName(filePath);
             reader.Update();

             vtkUndirectedGraph g = reader.GetOutput();

             vtkGraphLayoutView graphLayoutView = vtkGraphLayoutView.New();
             graphLayoutView.SetRenderWindow(renderWindowControl1.RenderWindow);
             graphLayoutView.AddRepresentationFromInput(g);
             graphLayoutView.SetLayoutStrategy("Simple 2D");
             graphLayoutView.ResetCamera();
             graphLayoutView.Render();
          }
       }
    }