using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Threading; public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.ProgressBar progressBar1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; private Thread fThread = null; private System.ComponentModel.Container components = null; public Form1() { this.progressBar1 = new System.Windows.Forms.ProgressBar(); this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.SuspendLayout(); this.progressBar1.Location = new System.Drawing.Point(24, 32); this.progressBar1.Name = "progressBar1"; this.progressBar1.Size = new System.Drawing.Size(264, 23); this.progressBar1.TabIndex = 0; this.button1.Location = new System.Drawing.Point(24, 80); this.button1.Size = new System.Drawing.Size(136, 40); this.button1.Text = "Start Thread"; this.button1.Click += new System.EventHandler(this.button1_Click); this.button2.Location = new System.Drawing.Point(168, 80); this.button2.Size = new System.Drawing.Size(120, 40); this.button2.Text = "Stop Thread"; this.button2.Click += new System.EventHandler(this.button2_Click); this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(704, 429); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.button2, this.button1, this.progressBar1}); this.ResumeLayout(false); } protected override void Dispose(bool disposing) { if (fThread != null) { fThread.Interrupt(); fThread = null; } } [STAThread] static void Main() { Application.Run(new Form1()); } private void UpdateProgress() { if (progressBar1.Value == progressBar1.Maximum) { progressBar1.Value = progressBar1.Minimum; } progressBar1.PerformStep(); } public void ThreadProc() { try { MethodInvoker mi = new MethodInvoker(this.UpdateProgress); while (true) { this.BeginInvoke(mi); Thread.Sleep(500); } } catch (ThreadInterruptedException e) { Console.WriteLine( "Interruption Exception in Thread: {0}", e); } catch (Exception we) { Console.WriteLine("Exception in Thread: {0}", we); } } private void button1_Click(object sender, System.EventArgs e) { fThread = new Thread(new ThreadStart(ThreadProc)); fThread.IsBackground = true; fThread.Start(); } private void button2_Click(object sender, System.EventArgs e) { fThread.Interrupt(); fThread = null; } }
Background processing in a thread.
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Label ValueLabel;
private System.Windows.Forms.Button button2;
private System.ComponentModel.Container components = null;
private Thread fThread;
private int fValue;
public Form1() {
fValue = 0;
this.label1 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.ValueLabel = new System.Windows.Forms.Label();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
this.label1.Location = new System.Drawing.Point(24, 32);
this.label1.Size = new System.Drawing.Size(80, 16);
this.label1.Text = “Value of Data:”;
this.button1.Location = new System.Drawing.Point(232, 32);
this.button1.Text = “&Update”;
this.button1.Click += new
System.EventHandler(this.button1_Click);
this.ValueLabel.Location = new System.Drawing.Point(120, 32);
this.button2.Location = new System.Drawing.Point(104, 88);
this.button2.Name = “button2”;
this.button2.RightToLeft =
System.Windows.Forms.RightToLeft.No;
this.button2.Size = new System.Drawing.Size(96, 23);
this.button2.Text = “Start Thread”;
this.button2.Click += new
System.EventHandler(this.button2_Click);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(336, 141);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button2,
this.ValueLabel,
this.button1,
this.label1});
this.ResumeLayout(false);
}
[STAThread]
static void Main() {
Application.Run(new Form1());
}
private void ThreadProc() {
while (fValue < 1000) {
Thread.Sleep(1000);
fValue++;
}
}
private void button2_Click(object sender, System.EventArgs e) {
fThread = new Thread(new ThreadStart(ThreadProc));
fThread.IsBackground = true;
fThread.Start();
}
private void button1_Click(object sender, System.EventArgs e) {
this.ValueLabel.Text = fValue.ToString();
}
}
[/csharp]
Starting and stopping a thread.
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label NumThreads;
private System.Windows.Forms.Label Counter;
private int fCounter;
private ArrayList fThreadList;
private System.ComponentModel.Container components = null;
public Form1() {
InitializeComponent();
fThreadList = new ArrayList();
}
protected override void Dispose(bool disposing) {
if (disposing) {
if (components != null) {
components.Dispose();
for (int i = 0; i < fThreadList.Count; ++i) { Thread fThread = (Thread)fThreadList[i]; fThread.Abort(); } } } base.Dispose(disposing); } private void InitializeComponent() { this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.NumThreads = new System.Windows.Forms.Label(); this.Counter = new System.Windows.Forms.Label(); this.SuspendLayout(); this.button1.Location = new System.Drawing.Point(32, 104); this.button1.Name = "button1"; this.button1.TabIndex = 0; this.button1.Text = "&Start"; this.button1.Click += new System.EventHandler(this.button1_Click); this.button2.Location = new System.Drawing.Point(136, 104); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(88, 24); this.button2.TabIndex = 1; this.button2.Text = "&Stop"; this.button2.Click += new System.EventHandler(this.button2_Click); this.label1.Location = new System.Drawing.Point(32, 40); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(152, 16); this.label1.TabIndex = 2; this.label1.Text = "Number of Threads Running:"; this.label2.Location = new System.Drawing.Point(32, 64); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(100, 16); this.label2.TabIndex = 3; this.label2.Text = "Counter:"; this.NumThreads.Location = new System.Drawing.Point(192, 40); this.NumThreads.Name = "NumThreads"; this.NumThreads.Size = new System.Drawing.Size(64, 16); this.NumThreads.TabIndex = 4; this.Counter.Location = new System.Drawing.Point(192, 64); this.Counter.Name = "Counter"; this.Counter.Size = new System.Drawing.Size(64, 16); this.Counter.TabIndex = 5; this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(272, 165); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.Counter, this.NumThreads, this.label2, this.label1, this.button2, this.button1}); this.ResumeLayout(false); } [STAThread] static void Main() { Application.Run(new Form1()); } protected void ThreadFunc() { Boolean done = false; while (!done) { Thread.Sleep(1000); fCounter++; this.Counter.Text = fCounter.ToString(); } } private void button1_Click(object sender, System.EventArgs e) { Thread fThread = new Thread(new ThreadStart(ThreadFunc)); fThread.Start(); fThreadList.Add(fThread); this.NumThreads.Text = fThreadList.Count.ToString(); } private void button2_Click(object sender, System.EventArgs e) { Thread fThread = (Thread)fThreadList[fThreadList.Count - 1]; fThread.Abort(); fThreadList.Remove(fThread); this.NumThreads.Text = fThreadList.Count.ToString(); } } [/csharp]
TextBox Demo
/* Professional Windows GUI Programming Using C# by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury, Zach Greenvoss, Shripad Kulkarni, Neil Whitlow Publisher: Peer Information ISBN: 1861007663 */ using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; namespace TextBox { /// <summary> /// Summary description for TextBox. /// </summary> public class TextBox : System.Windows.Forms.Form { private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label2; private System.Windows.Forms.Label label3; private System.Windows.Forms.Label label4; private System.Windows.Forms.TextBox SINGLE_LINE; private System.Windows.Forms.TextBox PASSWORD_LINE; private System.Windows.Forms.TextBox MULTI_LINE; private System.Windows.Forms.RichTextBox RICH_EDIT; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; public TextBox() { // // Required for Windows Form Designer support // InitializeComponent(); // // TODO: Add any constructor code after InitializeComponent call // } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows Form 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() { this.SINGLE_LINE = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.PASSWORD_LINE = new System.Windows.Forms.TextBox(); this.label2 = new System.Windows.Forms.Label(); this.label3 = new System.Windows.Forms.Label(); this.MULTI_LINE = new System.Windows.Forms.TextBox(); this.RICH_EDIT = new System.Windows.Forms.RichTextBox(); this.label4 = new System.Windows.Forms.Label(); this.SuspendLayout(); // // SINGLE_LINE // this.SINGLE_LINE.CharacterCasing = System.Windows.Forms.CharacterCasing.Upper; this.SINGLE_LINE.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(128)), ((System.Byte)(64)), ((System.Byte)(64))); this.SINGLE_LINE.Location = new System.Drawing.Point(32, 40); this.SINGLE_LINE.Name = "SINGLE_LINE"; this.SINGLE_LINE.Size = new System.Drawing.Size(408, 20); this.SINGLE_LINE.TabIndex = 0; this.SINGLE_LINE.Text = "THIS IS A SINGLELINE EDIT CONTROL"; // // label1 // this.label1.Location = new System.Drawing.Point(32, 24); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(168, 16); this.label1.TabIndex = 1; this.label1.Text = "Single Line TextBox"; // // PASSWORD_LINE // this.PASSWORD_LINE.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); this.PASSWORD_LINE.Location = new System.Drawing.Point(32, 104); this.PASSWORD_LINE.Name = "PASSWORD_LINE"; this.PASSWORD_LINE.PasswordChar = '^'; this.PASSWORD_LINE.Size = new System.Drawing.Size(104, 22); this.PASSWORD_LINE.TabIndex = 2; this.PASSWORD_LINE.Text = ""; // // label2 // this.label2.Location = new System.Drawing.Point(32, 80); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(160, 16); this.label2.TabIndex = 3; this.label2.Text = "Password TextBox"; // // label3 // this.label3.Location = new System.Drawing.Point(32, 136); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(120, 16); this.label3.TabIndex = 4; this.label3.Text = "MultiLine TextBox"; // // MULTI_LINE // this.MULTI_LINE.AcceptsReturn = true; this.MULTI_LINE.AcceptsTab = true; this.MULTI_LINE.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic), System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); this.MULTI_LINE.ForeColor = System.Drawing.SystemColors.HotTrack; this.MULTI_LINE.Location = new System.Drawing.Point(32, 160); this.MULTI_LINE.MaxLength = 10000; this.MULTI_LINE.Multiline = true; this.MULTI_LINE.Name = "MULTI_LINE"; this.MULTI_LINE.ScrollBars = System.Windows.Forms.ScrollBars.Vertical; this.MULTI_LINE.Size = new System.Drawing.Size(408, 104); this.MULTI_LINE.TabIndex = 5; this.MULTI_LINE.Text = ""; // // RICH_EDIT // this.RICH_EDIT.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); this.RICH_EDIT.ForeColor = System.Drawing.Color.Red; this.RICH_EDIT.Location = new System.Drawing.Point(32, 296); this.RICH_EDIT.Name = "RICH_EDIT"; this.RICH_EDIT.ShowSelectionMargin = true; this.RICH_EDIT.Size = new System.Drawing.Size(408, 120); this.RICH_EDIT.TabIndex = 6; this.RICH_EDIT.Text = "richTextBox1"; this.RICH_EDIT.ZoomFactor = 4.999695F; // // label4 // this.label4.Location = new System.Drawing.Point(32, 272); this.label4.Name = "label4"; this.label4.Size = new System.Drawing.Size(152, 16); this.label4.TabIndex = 7; this.label4.Text = "RichEdit Text Box"; // // TextBox // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(464, 453); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.label4, this.RICH_EDIT, this.MULTI_LINE, this.label3, this.label2, this.PASSWORD_LINE, this.label1, this.SINGLE_LINE}); this.Name = "TextBox"; this.Text = "TextBox Controls"; this.Load += new System.EventHandler(this.TextBox_Load); this.ResumeLayout(false); } #endregion /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new TextBox()); } private void TextBox_Load(object sender, System.EventArgs e) { RICH_EDIT.LoadFile("c: empRTFDOC.RTF"); } } }
TextBox and button on form
/* C# Programming Tips & Techniques by Charles Wright, Kris Jamsa Publisher: Osborne/McGraw-Hill (December 28, 2001) ISBN: 0072193794 */ using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; namespace Form { /// <summary> /// Summary description for ButtonTextForm. /// </summary> public class ButtonTextForm : System.Windows.Forms.Form { private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; private System.Windows.Forms.TextBox textBox1; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; public ButtonTextForm() { // // Required for Windows Form Designer support // InitializeComponent(); // // TODO: Add any constructor code after InitializeComponent call // } #region Windows Form 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() { this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.textBox1 = new System.Windows.Forms.TextBox(); this.SuspendLayout(); // // button1 // this.button1.Location = new System.Drawing.Point(61, 159); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(85, 37); this.button1.TabIndex = 1; this.button1.Text = "button1"; // // button2 // this.button2.Location = new System.Drawing.Point(196, 159); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(95, 37); this.button2.TabIndex = 2; this.button2.Text = "button2"; // // textBox1 // this.textBox1.Location = new System.Drawing.Point(41, 37); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(262, 22); this.textBox1.TabIndex = 0; this.textBox1.Text = "textBox1"; // // ButtonTextForm // this.AutoScaleBaseSize = new System.Drawing.Size(6, 15); this.ClientSize = new System.Drawing.Size(340, 280); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.button1, this.button2, this.textBox1}); this.Name = "ButtonTextForm"; this.Text = "ButtonTextForm"; this.Load += new System.EventHandler(this.ButtonTextForm_Load); this.ResumeLayout(false); } #endregion /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new ButtonTextForm()); } private void ButtonTextForm_Load(object sender, System.EventArgs e) { } private void button2_Click(object sender, System.EventArgs e) { Application.Exit (); } private void button1_Click(object sender, System.EventArgs e) { MessageBox.Show (this, textBox1.Text, "Text Box", MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation); } } }
TextBox and ListBox
using System; using System.Drawing; using System.Windows.Forms; public class WindowSample : Form { private TextBox data; private ListBox results; public WindowSample() { Text = "Sample Window Program"; Size = new Size(400, 380); Label label1 = new Label(); label1.Parent = this; label1.Text = "Enter text string:"; label1.AutoSize = true; label1.Location = new Point(10, 10); data = new TextBox(); data.Parent = this; data.Size = new Size(200, 2 * Font.Height); data.Location = new Point(10, 35); results = new ListBox(); results.Parent = this; results.Location = new Point(10, 65); results.Size = new Size(350, 20 * Font.Height); Button checkit = new Button(); checkit.Parent = this; checkit.Text = "test"; checkit.Location = new Point(235,32); checkit.Size = new Size(7 * Font.Height, 2 * Font.Height); checkit.Click += new EventHandler(ButtonOnClick); } void ButtonOnClick(object obj, EventArgs ea) { results.Items.Add(data.Text); data.Clear(); } public static void Main() { Application.Run(new WindowSample()); } }
Label, TextBox and Button
/* User Interfaces in C#: Windows Forms and Custom Controls by Matthew MacDonald Publisher: Apress ISBN: 1590590457 */ using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; namespace ControlMedley { /// <summary> /// Summary description for ControlMedley. /// </summary> public class ControlMedley : System.Windows.Forms.Form { internal System.Windows.Forms.Label Label1; internal System.Windows.Forms.TextBox TextBox1; internal System.Windows.Forms.Button Button1; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; public ControlMedley() { // // Required for Windows Form Designer support // InitializeComponent(); // // TODO: Add any constructor code after InitializeComponent call // } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows Form 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() { this.Label1 = new System.Windows.Forms.Label(); this.TextBox1 = new System.Windows.Forms.TextBox(); this.Button1 = new System.Windows.Forms.Button(); this.SuspendLayout(); // // Label1 // this.Label1.FlatStyle = System.Windows.Forms.FlatStyle.System; this.Label1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); this.Label1.Location = new System.Drawing.Point(20, 92); this.Label1.Name = "Label1"; this.Label1.Size = new System.Drawing.Size(112, 24); this.Label1.TabIndex = 5; this.Label1.Text = "Label1"; this.Label1.Click += new System.EventHandler(this.ctrlClick); // // TextBox1 // this.TextBox1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); this.TextBox1.Location = new System.Drawing.Point(20, 56); this.TextBox1.Name = "TextBox1"; this.TextBox1.Size = new System.Drawing.Size(156, 21); this.TextBox1.TabIndex = 4; this.TextBox1.Text = "TextBox1"; this.TextBox1.Click += new System.EventHandler(this.ctrlClick); // // Button1 // this.Button1.FlatStyle = System.Windows.Forms.FlatStyle.System; this.Button1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); this.Button1.Location = new System.Drawing.Point(20, 16); this.Button1.Name = "Button1"; this.Button1.Size = new System.Drawing.Size(96, 28); this.Button1.TabIndex = 3; this.Button1.Text = "Button1"; this.Button1.Click += new System.EventHandler(this.ctrlClick); // // ControlMedley // this.AutoScaleBaseSize = new System.Drawing.Size(5, 14); this.ClientSize = new System.Drawing.Size(316, 214); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.Label1, this.TextBox1, this.Button1}); this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); this.Name = "ControlMedley"; this.Text = "Control Medley"; this.ResumeLayout(false); } #endregion /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new ControlMedley()); } private void ctrlClick(System.Object sender, EventArgs e) { Control ctrl = (Control)sender; MessageBox.Show("You clicked: " + ctrl.Name); } } }