# XMLStructuredGridWriter

VTKExamples/CSharp/IO/XMLStructuredGridWriter

### Description

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

XMLStructuredGridWriter.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 {
                XMLStructuredGridWriter();
             }
             catch(Exception ex) {
                MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK);
             }
          }

          private void XMLStructuredGridWriter() {
             // 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\structuredgrid_test.vts");
             // Create a grid
             vtkStructuredGrid structuredGrid = vtkStructuredGrid.New();
             vtkPoints points = vtkPoints.New();
             points.InsertNextPoint(0, 0, 0);
             points.InsertNextPoint(1, 0, 0);
             points.InsertNextPoint(0, 1, 0);
             points.InsertNextPoint(1, 1, 0);
             points.InsertNextPoint(0, 2, 0);
             points.InsertNextPoint(1, 2, 1);

             // Specify the dimensions of the grid
             structuredGrid.SetDimensions(2, 3, 1);
             structuredGrid.SetPoints(points);

             // Write file
             vtkXMLStructuredGridWriter writer = vtkXMLStructuredGridWriter.New();
             writer.SetFileName(filePath);
             writer.SetInput(structuredGrid);
             writer.Write();

             // Read and display file for verification that it was written correctly
             vtkXMLStructuredGridReader reader = vtkXMLStructuredGridReader.New();
             if(reader.CanReadFile(filePath) == 0) {
                MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK);
                return;
             }
             reader.SetFileName(filePath);
             reader.Update(); // here we read the file actually

             vtkStructuredGridGeometryFilter geometryFilter = vtkStructuredGridGeometryFilter.New();
             geometryFilter.SetInputConnection(reader.GetOutputPort());
             geometryFilter.Update();

             // Visualize
             vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
             mapper.SetInputConnection(geometryFilter.GetOutputPort());

             // actor
             vtkActor actor = vtkActor.New();
             actor.SetMapper(mapper);
             // get a reference to the renderwindow of our renderWindowControl1
             vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
             // renderer
             vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
             // set background color
             renderer.SetBackground(0.2, 0.3, 0.4);
             // add our actor to the renderer
             renderer.AddActor(actor);
          }
       }
    }