/* 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 Modeless { /// <summary> /// Summary description for MainForm. /// </summary> public class MainFormDemo : System.Windows.Forms.Form { private System.Windows.Forms.ListBox listBox1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; private System.Windows.Forms.Button button3; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; AddItemForm frmAdd; public MainFormDemo() { // // Required for Windows Form Designer support // InitializeComponent(); // // TODO: Add any constructor code after InitializeComponent call // frmAdd = new AddItemForm (this); } /// <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.listBox1 = new System.Windows.Forms.ListBox(); this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.button3 = new System.Windows.Forms.Button(); this.SuspendLayout(); // // listBox1 // this.listBox1.Location = new System.Drawing.Point(42, 16); this.listBox1.Name = "listBox1"; this.listBox1.Size = new System.Drawing.Size(208, 199); this.listBox1.TabIndex = 0; // // button1 // this.button1.Location = new System.Drawing.Point(17, 240); this.button1.Name = "button1"; this.button1.TabIndex = 1; this.button1.Text = "Add Item"; this.button1.Click += new System.EventHandler(this.button1_Click); // // button2 // this.button2.Location = new System.Drawing.Point(109, 240); this.button2.Name = "button2"; this.button2.TabIndex = 2; this.button2.Text = "Delete Item"; this.button2.Click += new System.EventHandler(this.button2_Click); // // button3 // this.button3.DialogResult = System.Windows.Forms.DialogResult.Cancel; this.button3.Location = new System.Drawing.Point(201, 240); this.button3.Name = "button3"; this.button3.TabIndex = 3; this.button3.Text = "Close"; this.button3.Click += new System.EventHandler(this.button3_Click); // // MainForm // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.CancelButton = this.button3; this.ClientSize = new System.Drawing.Size(292, 273); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.button3, this.button2, this.button1, this.listBox1}); this.Name = "MainForm"; this.Text = "MainForm"; this.ResumeLayout(false); } #endregion /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new MainFormDemo()); } private void button1_Click(object sender, System.EventArgs e) { if (frmAdd.IsDisposed == true) frmAdd = new AddItemForm (this); frmAdd.Show (); } private void button2_Click(object sender, System.EventArgs e) { if (listBox1.SelectedIndex < 0) return; object obj = listBox1.Items[listBox1.SelectedIndex]; listBox1.Items.Remove (obj); } private void button3_Click(object sender, System.EventArgs e) { Application.Exit (); } public string AddItemToList (string strAdd) { if (strAdd == "") return (""); if (listBox1.FindString (strAdd, -1) < 0) { listBox1.Items.Add (strAdd); return (""); } MessageBox.Show (""" + strAdd + "" is already in the list box", "Duplicate"); return (strAdd); } } /// <summary> /// Summary description for AddItemForm. /// </summary> public class AddItemForm : System.Windows.Forms.Form { private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; MainFormDemo parent; public AddItemForm(MainFormDemo parent) { // // Required for Windows Form Designer support // InitializeComponent(); // // TODO: Add any constructor code after InitializeComponent call // this.parent = parent; } /// <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.textBox1 = new System.Windows.Forms.TextBox(); this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.SuspendLayout(); // // textBox1 // this.textBox1.Location = new System.Drawing.Point(28, 8); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(224, 20); this.textBox1.TabIndex = 1; this.textBox1.Text = ""; // // button1 // this.button1.Location = new System.Drawing.Point(40, 48); this.button1.Name = "button1"; this.button1.TabIndex = 2; this.button1.Text = "Add"; this.button1.Click += new System.EventHandler(this.button1_Click_1); // // button2 // this.button2.Location = new System.Drawing.Point(184, 48); this.button2.Name = "button2"; this.button2.TabIndex = 3; this.button2.Text = "Close"; this.button2.Click += new System.EventHandler(this.button2_Click); // // AddItemForm // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(280, 77); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.button2, this.button1, this.textBox1}); this.Name = "AddItemForm"; this.Text = "AddItem"; this.ResumeLayout(false); } #endregion private void button1_Click_1(object sender, System.EventArgs e) { textBox1.Text = parent.AddItemToList (textBox1.Text); // textBox1.Text = ""; } private void button2_Click(object sender, System.EventArgs e) { this.Dispose (); this.Close (); } } }