form5.cs

来自「c#网络编程及应用-刘瑞新」· CS 代码 · 共 171 行

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

namespace book6_1
{
	/// <summary>
	/// Form5 的摘要说明。
	/// </summary>
	public class Form5 : 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.TextBox textBox1;
		private System.Windows.Forms.Label label1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form5()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </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.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// listBox1
			// 
			this.listBox1.ItemHeight = 12;
			this.listBox1.Location = new System.Drawing.Point(40, 64);
			this.listBox1.Name = "listBox1";
			this.listBox1.SelectionMode = System.Windows.Forms.SelectionMode.MultiSimple;
			this.listBox1.Size = new System.Drawing.Size(280, 112);
			this.listBox1.TabIndex = 0;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(40, 192);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(88, 24);
			this.button1.TabIndex = 1;
			this.button1.Text = "添加非重复项";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(200, 192);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(88, 24);
			this.button2.TabIndex = 2;
			this.button2.Text = "多项删除";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(160, 24);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(152, 21);
			this.textBox1.TabIndex = 5;
			this.textBox1.Text = "";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(40, 24);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(104, 24);
			this.label1.TabIndex = 6;
			this.label1.Text = "向列表中添加内容";
			// 
			// Form5
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(336, 229);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.label1,
																		  this.textBox1,
																		  this.button2,
																		  this.button1,
																		  this.listBox1});
			this.Name = "Form5";
			this.Text = "Form5";
			this.Load += new System.EventHandler(this.Form5_Load);
			this.ResumeLayout(false);

		}
		#endregion

		private void Form5_Load(object sender, System.EventArgs e)
		{
			for(int i=0;i<6;i++)
				listBox1.Items.Add("第"+(i+1).ToString()+"项" );

		}

		private void button3_Click(object sender, System.EventArgs e)
		{
		
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			bool ifExist=false;
			if (textBox1.Text!="") 
				for(int i=0;i<listBox1.Items.Count;i++)
				{
					if(this.listBox1.Items[i].ToString()==textBox1.Text)
					{
						ifExist=true;
						break;
					}
				}
			if(!ifExist)
			{
				this.listBox1.Items.Add(textBox1.Text);
			}

		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			if(listBox1.SelectedIndices.Count>0)
			{
				for(int i=listBox1.SelectedIndices.Count-1;i>=0;i--)
				{
					int j=listBox1.SelectedIndices[i];
					listBox1.Items.Remove(listBox1.Items[j].ToString());
				}
			}

		}
	}
}