GKR why the labels are not visible (C# code)

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Joined
15 Nov 2006
Posts
164
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This is a part of CPU Stretcher's source code:

Code:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Threading;
using System.Diagnostics;
using System.IO;
namespace CPU_Stretcher
{
	public class frmCPU_Stretcher : System.Windows.Forms.Form
	{
        	private System.ComponentModel.IContainer components=null;
		private System.Windows.Forms.Button btn_fire;
	        private System.Windows.Forms.Button btn_stop;
        	private System.Windows.Forms.PictureBox pictureBox_fire;
		private Label label_time;
	        private Label label_percentage;
		public frmCPU_Stretcher()
		{
			InitializeComponent();
		}
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}
		[STAThread]
		static void Main()
		{
			Application.EnableVisualStyles();
			Application.Run(new frmCPU_Stretcher());
		}
		private void InitializeComponent()
        	{
	            System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(frmCPU_Stretcher));
        	    this.btn_fire = new System.Windows.Forms.Button();
	            this.btn_stop = new System.Windows.Forms.Button();
        	    this.pictureBox_fire = new System.Windows.Forms.PictureBox();
	            this.label_time = new System.Windows.Forms.Label();
	            this.label_percentage = new System.Windows.Forms.Label();
        	    this.SuspendLayout();
		    // 
        	    // btn_fire
  	            // 
        	    this.btn_fire.FlatStyle = System.Windows.Forms.FlatStyle.System;
	            this.btn_fire.Font = new System.Drawing.Font("Times New Roman", 9F);
	            this.btn_fire.Location = new System.Drawing.Point(120, 248);
        	    this.btn_fire.Name = "btn_fire";
	            this.btn_fire.Size = new System.Drawing.Size(60, 24);
        	    this.btn_fire.TabIndex = 78;
	            this.btn_fire.Text = "Fire";
	            this.btn_fire.Click += new System.EventHandler(this.btn_fire_Click);
        	    // 
	            // btn_stop
        	    // 
	            this.btn_stop.Enabled = false;
        	    this.btn_stop.FlatStyle = System.Windows.Forms.FlatStyle.System;
	            this.btn_stop.Font = new System.Drawing.Font("Times New Roman", 9F);
        	    this.btn_stop.Location = new System.Drawing.Point(240, 218);
	            this.btn_stop.Name = "btn_stop";
        	    this.btn_stop.Size = new System.Drawing.Size(60, 24);
	            this.btn_stop.TabIndex = 79;
        	    this.btn_stop.Text = "Stop";
	            // 
        	    // pictureBox_fire
	            // 
        	    this.pictureBox_fire.BackColor = System.Drawing.Color.White;
	            this.pictureBox_fire.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox_fire.Image")));
        	    this.pictureBox_fire.Location = new System.Drawing.Point(186, 108);
	            this.pictureBox_fire.Name = "pictureBox_fire";
        	    this.pictureBox_fire.Size = new System.Drawing.Size(105, 96);
	            this.pictureBox_fire.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;
        	    this.pictureBox_fire.TabIndex = 74;
	            this.pictureBox_fire.TabStop = false;
        	    this.pictureBox_fire.Visible = false;
	            // 
        	    // label_percentage
	            // 
        	    this.label_percentage.AutoSize = true;
	            this.label_percentage.BackColor = System.Drawing.Color.Black;
        	    this.label_percentage.Font = new System.Drawing.Font("Book Antiqua", 12.75F, ((System.Drawing.FontStyle)((System.Drawing.FontStyle.Bold | 			System.Drawing.FontStyle.Italic))), System.Drawing.GraphicsUnit.Point, ((System.Byte)(161)));
	            this.label_percentage.ForeColor = System.Drawing.Color.OrangeRed;
        	    this.label_percentage.Location = new System.Drawing.Point(212, 80);
	            this.label_percentage.Name = "label_percentage";
	            this.label_percentage.Size = new System.Drawing.Size(70, 24);
        	    this.label_percentage.TabIndex = 94;
	            this.label_percentage.Text = "000.00%";
        	    this.label_percentage.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
	            this.label_percentage.Visible = false;
	            // 
        	    // label_time
	            // 
        	    this.label_time.AutoSize = true;
	            this.label_time.BackColor = System.Drawing.Color.Black;
        	    this.label_time.Font = new System.Drawing.Font("Book Antiqua", 12.75F, ((System.Drawing.FontStyle)((System.Drawing.FontStyle.Bold | 				System.Drawing.FontStyle.Italic))), System.Drawing.GraphicsUnit.Point, ((System.Byte)(161)));
	            this.label_time.ForeColor = System.Drawing.Color.Lime;
        	    this.label_time.Location = new System.Drawing.Point(134, 80);
	            this.label_time.Name = "label_time";
        	    this.label_time.Size = new System.Drawing.Size(67, 24);
	            this.label_time.TabIndex = 95;
        	    this.label_time.Text = "00:00:00";
	            this.label_time.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
        	    this.label_time.Visible = false;
	            // 
        	    // frmCPU_Stretcher
	            // 
        	    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
	            this.BackColor = System.Drawing.Color.White;
        	    this.ClientSize = new System.Drawing.Size(449, 300);
	            this.Controls.Add(this.label_percentage);
        	    this.Controls.Add(this.label_time);
	            this.Controls.Add(this.btn_stop);
        	    this.Controls.Add(this.btn_fire);
	            this.Controls.Add(this.pictureBox_fire);
        	    this.Cursor = System.Windows.Forms.Cursors.Arrow;
	            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
        	    this.Location = new System.Drawing.Point(270, 20);
	            this.MaximizeBox = false;
        	    this.MinimizeBox = false;
	            this.Name = "frmCPU_Stretcher";
        	    this.ShowInTaskbar = false;
	            this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;
        	    this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
	            this.Text = "CPU stretcher";
        	    this.TopMost = true;
	            this.ResumeLayout(false);	
                }
		private void btn_fire_Click(object sender, System.EventArgs e)
		{
			Thread t1 = new Thread(new ThreadStart(burn_in));
			pictureBox_fire.Visible=true;
        		btn_stop.Enabled=true;
			btn_fire.Enabled=false;
			label_time.Visible = true;  // This ******* label is appeared during execution but if we move
	        	t1.Start();                 // the command in burn_in() routine is not appeared GKR, GKR, GKR
		}   
		private void burn_in()
		{
        	    label_percentage.Visible = true;       // WTF this command does not work?????
	            System.Threading.Thread.Sleep(3000);   // Assume this command is the burn-in code
	            btn_stop.Enabled = false;
        	    label_percentage.Visible = false;
	            label_time.Visible = false;            // This command works GKR......
        	    pictureBox_fire.Visible = false;
	            btn_fire.Enabled = true;
		}
	}
}

The program was written in Visual C# 2003.
Yesterday I compiled the source code with Visual Studio 2005.
All OK, no warnings.
Then running the program I encountered problems (that's why I added comments).
Why?????? :confused:
I am very confused........ :(
 
Thank you :) I will follow your recommendations.
I was very angry and confused cos I was thinking "both labels are external (global) variables)" so what's wrong.... :rolleyes:
 
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