Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Problem setting an Image in a control inhereted from PictureBox (C# & Windows Forms)

Posted on 2004-03-29
4
497 Views
Last Modified: 2010-05-18
Hi there.... Please give me a hand with this code, because I'm sure I'm missing something.

I've made a control that inherits from PictureBox. This is the code

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;

namespace Quattropoli.UI
{
      public class Casilla : System.Windows.Forms.PictureBox
      {
            private System.ComponentModel.Container components = null;
            private short _fila;
            private short _columna;
            public short Fila
            {
                  get
                  {
                        return _fila;
                  }
                  set
                  {
                        _fila = value;
                  }
            }
            public short Columna
            {
                  get
                  {
                        return _columna;
                  }
                  set
                  {
                        _columna = value;
                  }
            }
            public Casilla()
            {
                  InitializeComponent();
            }
            protected override void Dispose( bool disposing )
            {
                  if( disposing )
                  {
                        if(components != null)
                        {
                              components.Dispose();
                        }
                  }
                  base.Dispose( disposing );
            }

            #region Component Designer generated code
            /// <summary>
            /// Required method for Designer support - do not modify
            /// the contents of this method with the code editor.
            /// </summary>
            private void InitializeComponent()
            {
                  components = new System.ComponentModel.Container();
            }
            #endregion
            public void ColocarFicha(Juego.Ficha ficha)
            {
                  System.Reflection.Assembly myAssembly = this.GetType().Assembly;
                  System.Resources.ResourceManager myManager = new System.Resources.ResourceManager("Quattropoli.imagenes",myAssembly);
                  switch(ficha.Tipo)
                  {
                        case Juego.Ficha.TipoFicha.Azul:
                              this.Image = (Image)myManager.GetObject("Azul");
                              break;
                        case Juego.Ficha.TipoFicha.Roja:
                              this.Image = (Image)myManager.GetObject("Rojo");
                              break;
                  }
            }
      }
}

Then I have a user control that should build a matrix of Casilla Controls. here's the code:

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using System.Diagnostics;

namespace Quattropoli.UI
{
      public class Tablero : System.Windows.Forms.UserControl
      {
            private System.ComponentModel.Container components = null;
            private Casilla[,] _casillas = new Casilla[6,7];
            public Tablero()
            {
                  InitializeComponent();
                  for(short i=0; i<6; i++)
                  {
                        for(short j=0; j < 7; j++)
                        {
                              ConfigurarCasilla(i,j);
                              Controls.Add(_casillas[i,j]);
                              Controls[Controls.Count-1].Click+=new EventHandler(Tablero_Click);
                        }
                  }            
            }
            protected override void Dispose( bool disposing )
            {
                  if( disposing )
                  {
                        if(components != null)
                        {
                              components.Dispose();
                        }
                  }
                  base.Dispose( disposing );
            }

            #region Component Designer generated code
            private void InitializeComponent()
            {
                  //
                  // Tablero
                  //
                  this.Name = "Tablero";
                  this.Size = new System.Drawing.Size(280, 240);
                  this.Load += new System.EventHandler(this.Tablero_Load);

            }
            #endregion

            private void Tablero_Load(object sender, System.EventArgs e)
            {

            }
            private void ConfigurarCasilla(short fila, short columna)
            {
                  _casillas[fila,columna] = new Casilla();
                  _casillas[fila,columna].Fila = fila;
                  _casillas[fila,columna].Columna = columna;
                  _casillas[fila,columna].BackColor = Color.White;
                  _casillas[fila,columna].BorderStyle = BorderStyle.FixedSingle;
                  _casillas[fila,columna].Top = fila * 40;
                  _casillas[fila,columna].Left = columna * 40;
                  _casillas[fila,columna].Width=40;
                  _casillas[fila,columna].Height=40;
            }

            private void Tablero_Click(object sender, EventArgs e)
            {
                  ((Casilla)sender).ColocarFicha(new Juego.Ficha(Juego.Ficha.TipoFicha.Azul));
            }
      }
}

At this point everything works fine. If i click over some "Casilla" inside the "Tablero" control, I get my image loaded and displayed. Now i want to programaticly change the image of some "Casilla", so i added this method to "Tablero" class

            public void jugar(short i, short j, Juego.Ficha ficha)
            {
                  _casillas[i,j].ColocarFicha(ficha);
            }

now, this method doesn't work. I mean, I call it from the main form and get nothing!. The weird stuff is that if I debug, after i call _casillas[i,j].ColocarFicha(ficha); the image is actually set in the array and the Controls Collection, but it doesn't get displayed. Any ideas?.. thanks
0
Comment
Question by:esteban_felipe
4 Comments
 
LVL 12

Accepted Solution

by:
farsight earned 500 total points
ID: 10712224
(1) I'm guessing:  Add this
               _casillas[i,j].Refresh()
at the end of jugar() or
                this.Refresh()
at the end of Casillas.ColocarFicha()

(2) [off-topic]
I also wonder why you did this:
public class Casilla : System.Windows.Forms.PictureBox
     {
          private System.ComponentModel.Container components = null;
          // ...
     }
Why aren't you just using:
     this.container
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Batch file or script with password 22 65
Help with consolidating excel files using VB.net 2 29
parsing JSON help 1 20
MailAddress in vb 4 29
Summary Displaying images in RichTextBox is a common requirement with limited solutions available. Pasting through clipboard or embedding into RTF content only support static images.  This article describes how to insert Windows control objects int…
In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question