Display results to the end user as it appears in the 'Autos' window of debugging

Display results to the end user as it appears in the 'Autos' window of debugging

• ListrCZ

  Ok,

  My application is for a research in the 'Computer Science' domain , and the user also will be a professional programmer.

  I need to explore all properties of specific objects to see the qualification of the application's results.

  Thanks,

  Aya.

  
  

• NetPochi

  Take a look at the PropertyGrid control first. It already uses reflection to display the properties of an object. To see what it looks like (it will look familiar), start a new Windows Forms project, drop a PropertyGrid on the form and write this code:
  
  public partial class Form1 : Form {
  public Form1() {
  InitializeComponent();
  propertyGrid1.SelectedObject = this;
  }
  }
  
  Expand on this by setting the SelectedObject property to your own object...
  
  
  
  

• Nageshwar

  Thank you Mr. nobugz, but can I get more explanation please.

  Thanks,

  Aya.

  
  

• sqlhiker

  Ok,thank you.

  I have tried it but:

  when I use the sentence: Object2Tree(this, treeView1);
  it results the tree of the Form , when I use my own object instead of 'this',the resulted tree is empty and the value of the 'props' in

  PropertyInfo[] props = t.GetProperties();

  = {Dimensions:[0]}

  Here is the first lines of my own class 'TextPreprocessingClass' :

   

  using System;

  using System.Collections.Generic;

  using System.Collections;

  using System.Text;

  using System.IO;

  using IndexAuto;

  using SearchAuto1;

  using System.Windows.Forms; //for messagebox

  using CHARM_Algorithm;

  using Iesi.Collections;

  using VISUAL_BASIC_DATA_MINING_NET.APriori;

  using System.Data.OleDb;

  using Microsoft.VisualBasic;

  using System.Runtime.Serialization.Formatters.Binary;

  namespace SoftMatchingAssociations

  {

  public struct Solution

  {

  public char[] DiacritizedWord;

  public char[] PrefixString; public int PrefixID;

  public char[] RootString; public int RootID;

  public char[] FormString; public int FormID;

  public char[] SuffixString; public int SuffixID;

  }

  public struct ArabicLettersStruct

  {

  public char[] arabicLettersArray;

  public String arabicLettersString;

  public String arabicLettersStringWithSpace;

  }

   

   

  [Serializable]

  public class TextPreprocessingClass

  {

   

  //--------------

  public ItemsetCandidate uniqueCandidateItemset = new ItemsetCandidate();

  private ItemsetArrayList items;

  //--------------

  public ArrayList tagsTable = new ArrayList(); //ArrayList of class Tags

  public ArrayList InitialNodesTable = new ArrayList(); // ArrayList of class CharmNode

  public ArrayList searchQueryWords = new ArrayList();

  public ArrayList uniqueIntermediateForm = new ArrayList();

  //Connection to Access database

  //static string connetionString = Properties.Settings.Default.IntermediateResultsDatabaseConnectionString;

  //OleDbConnection con = new OleDbConnection(connetionString);

  string connetionString;

  private OleDbConnection con;

  static IntermediateResultsDatabaseDataSetTableAdapters.DocumentsTableTableAdapter dTA = new SoftMatchingAssociations.IntermediateResultsDatabaseDataSetTableAdapters.DocumentsTableTableAdapter();

  IntermediateResultsDatabaseDataSet.DocumentsTableDataTable dDT = dTA.GetData();

  static IntermediateResultsDatabaseDataSetTableAdapters.Corpuses_IndexesTableAdapter cTA = new SoftMatchingAssociations.IntermediateResultsDatabaseDataSetTableAdapters.Corpuses_IndexesTableAdapter();

  IntermediateResultsDatabaseDataSet.Corpuses_IndexesDataTable cDT = new IntermediateResultsDatabaseDataSet.Corpuses_IndexesDataTable();

  /// <summary>

  /// Input Row Corpus

  /// </summary>

  public ArrayList unProcessedDocuments;

  /// <summary>

  /// //have only arabic key words

  /// </summary>

  //public ArrayList cleanedDocuments;

  /// <summary>

  /// //replacing similars with keys (tags)

  /// </summary>

  public ArrayList intermediateForm = new ArrayList();

   

   

  private int nextQueryWordPageNo = 0, nextQueryWordIndex = 0;

  string pathOfSLM, pathOfDefaultCorpus, pathOfDontMorphoWordList;

  short setSpecialVocalizers;

  public TextPreprocessingClass() //constructor

  {

  //default paths

  //pathAndNameOfIndexIn = "TstIndex\\Index";

  //pathOfIndexDirectory = "TstIndex";

  pathOfSLM = "TestSLM\\Morpho3.SLM";

  pathOfDefaultCorpus = "ArabicCorpus"; //initially contains raw corpus files, using in AddPage statement

  pathOfDontMorphoWordList = "";

  setSpecialVocalizers = 1;

  }

  .

  .

  .

  .

  .

  }

   

   

  I need to show the values of that properties , such as tagsTable, InitialNodesTable ,.......

  as I saw in the Autos window.

   

   

  I am so sorry for my insipid request,

  Thanks in advance,

  Aya.

  
  

• Tadwick

  Yes,

  It is an instance of user defined class that has its own properties.

  
  

• The ZMan

  Yes, it is a public one.
  

• georgeob

  That's a pretty open-ended question. The generic answer is: Sure! Use reflection to enumerate the values of the properties and fields of the object(s).
  
  
  

• Christie Myburgh

  What's their accessibility They'd need to be public for the PropertyGrid to show their values...
  
  
  

• Klaus Aschenbrenner

  Ok, I have tried that, it displays the properties of the form or a specific button , but when I try to set the SelectedObject to my own object , it displays nothing!!

  Am I do something wrong

  Aya.

  
  

• CaRNaGe_46038

  You don't have any properties declared in your class. Try dumping the fields instead, you've got plenty of those. Add this code to Object2Tree to let it display fields:
  
  // Display the fields
  FieldInfo[] fields = t.GetFields();
  foreach (FieldInfo fld in fields){
  string fldvalue = " ";
  try {
  object value = fld.GetValue(obj);
  if (value == null) fldvalue = "null";
  else fldvalue = value.ToString();
  }
  catch (Exception ex) {
  fldvalue = " " + ex.Message;
  }
  root.Nodes.Add(fld.Name + ": " + fldvalue);
  }
  
  
  
  

• DavidThi808

  Here's some sample code to use Reflection to discover the members of an object. Drop a large TreeView on a form and paste the code shown below. I just display properties but you could also add fields with the Type.GetFields() method. I didn't try too hard to handle all possible special cases like indexers etc, I just trap an exception and display a question mark.
  
  public partial class Form1 : Form {
  public Form1() {
  InitializeComponent();
  Object2Tree(this, treeView1);
  }
  public static void Object2Tree(object obj, TreeView tree) {
  // Displays properties of <obj> in <tree>
  Type t = obj.GetType();
  TreeNode root = tree.Nodes.Add(t.Name);
  // Display the properties
  PropertyInfo[] props = t.GetProperties();
  foreach (PropertyInfo prop in props) {
  string propvalue = " ";
  try {
  if (!prop.CanRead) propvalue = "Write only";
  else {
  object value = prop.GetValue(obj, null);
  if (value == null) propvalue = "null";
  else propvalue = value.ToString();
  }
  }
  catch (Exception ex) {
  propvalue = " " + ex.Message;
  }
  root.Nodes.Add(prop.Name + ": " + propvalue);
  }
  }
  }
  
  

• jiao

  Thank you for your reply.

  But I need more explanation please.

  Thanks,

  Aya

  
  

• ccg420104

  Does your object have properties
  
  
  

• Biju S Melayil

  Before we dive into the (considerable) complexities of Reflection, please tell us *exactly* what you want to accomplish. "Display the resulted objects to the program user" isn't much to go by, especially if the program user is not a programmer.
  
  Take a look at the PropertyGrid control too.
  
  
  
• Display results to the end user as it appears in the 'Autos' window of debugging