ListBox.Items.Clear() : ListBox « System.Windows.Forms

  





using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;



public class Form1 : Form

{

      private System.Windows.Forms.ListBox displayListBox;

      private System.Windows.Forms.TextBox inputTextBox;

      private System.Windows.Forms.Button addButton;

      private System.Windows.Forms.Button removeButton;

      private System.Windows.Forms.Button clearButton;

      

      public Form1() {

        InitializeComponent();

    }



      private void addButton_Click( object sender, EventArgs e )

      {

        displayListBox.Items.Add( inputTextBox.Text );

        inputTextBox.Clear();

      } 

      private void removeButton_Click( object sender, EventArgs e )

      {

        if ( displayListBox.SelectedIndex != -1 )

          displayListBox.Items.RemoveAt( displayListBox.SelectedIndex );

      }



      private void clearButton_Click( object sender, EventArgs e )

      {

         displayListBox.Items.Clear();

      }



      private void InitializeComponent()

      {

         this.displayListBox = new System.Windows.Forms.ListBox();

         this.inputTextBox = new System.Windows.Forms.TextBox();

         this.addButton = new System.Windows.Forms.Button();

         this.removeButton = new System.Windows.Forms.Button();

         this.clearButton = new System.Windows.Forms.Button();

         this.SuspendLayout();

         // 

         // displayListBox

         // 

         this.displayListBox.FormattingEnabled = true;

         this.displayListBox.Location = new System.Drawing.Point(13, 12);

         this.displayListBox.Name = "displayListBox";

         this.displayListBox.Size = new System.Drawing.Size(119, 238);

         this.displayListBox.TabIndex = 0;

         // 

         // inputTextBox

         // 

         this.inputTextBox.Location = new System.Drawing.Point(149, 12);

         this.inputTextBox.Name = "inputTextBox";

         this.inputTextBox.Size = new System.Drawing.Size(100, 20);

         this.inputTextBox.TabIndex = 1;

         // 

         // addButton

         // 

         this.addButton.Location = new System.Drawing.Point(149, 56);

         this.addButton.Name = "addButton";

         this.addButton.Size = new System.Drawing.Size(100, 36);

         this.addButton.TabIndex = 2;

         this.addButton.Text = "Add";

         this.addButton.Click += new System.EventHandler(this.addButton_Click);

         // 

         // removeButton

         // 

         this.removeButton.Location = new System.Drawing.Point(149, 109);

         this.removeButton.Name = "removeButton";

         this.removeButton.Size = new System.Drawing.Size(100, 36);

         this.removeButton.TabIndex = 3;

         this.removeButton.Text = "Remove";

         this.removeButton.Click += new System.EventHandler(this.removeButton_Click);

         // 

         // clearButton

         // 

         this.clearButton.Location = new System.Drawing.Point(149, 165);

         this.clearButton.Name = "clearButton";

         this.clearButton.Size = new System.Drawing.Size(100, 36);

         this.clearButton.TabIndex = 4;

         this.clearButton.Text = "Clear";

         this.clearButton.Click += new System.EventHandler(this.clearButton_Click);

         // ListBoxTestForm

         // 

         this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

         this.ClientSize = new System.Drawing.Size(263, 268);

         this.Controls.Add(this.clearButton);

         this.Controls.Add(this.removeButton);

         this.Controls.Add(this.addButton);

         this.Controls.Add(this.inputTextBox);

         this.Controls.Add(this.displayListBox);

         this.Name = "ListBoxTestForm";

         this.Text = "ListBoxTest";

         this.ResumeLayout(false);

         this.PerformLayout();



      }



      [STAThread]

      static void Main()

      {

    Application.EnableVisualStyles();

    Application.Run(new Form1());

    }



}
ListBox.Items.Clear() : ListBox « System.Windows.Forms « C# / C Sharp by API
