C#-ListBox,FileDialog,文件选择查看---ShinePans

Program.cs

using System;using System.Collections.Generic;using System.Linq;using System.Windows.Forms;namespace LiestBox_1{    static class Program    {        /// <summary>        /// 应用程序的主入口点。        /// </summary>        [STAThread]        static void Main()        {            Application.EnableVisualStyles();            Application.SetCompatibleTextRenderingDefault(false);            Application.Run(new Form1());            //AllowSelection 指示是否启用了列表项的选择            //BorderStyle ListBox 绘制边框类型            //ColumnWidth  列的宽度            //DataSource  数据源            //HorizintalScrollbar 是否显示水平滚动条            //Items  项            //SelectedIndex  索引            //SelectedIndices 当前项从 0开始的索引项            //SelectedItems 获取包含 ListBox 中当前选定项            //SelectedItems 当前选定项的集合            //SelectedValue 成员属性 值            //Sorted 是否按字母顺序排序            //ClearSelected  取消所有选择            //FindString 查找ListBox中 以指定字符串开头的第一个项            //FindStringExact 第一个精确匹配指定字符串的项            //GetItemText 返回指定项 的文本形式            //SetSelected 选择或清除对 ListBox 中指定项的选定            //Sort 对ListBox 中的项 排序            //SelectedIndexChanged 在SelectedIndex 属性更改后发生            //SelectedValueChanged 在SelectedValue 属性更改时发生                    }    }}

Form1.cs

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.IO;namespace LiestBox_1{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void Form1_Load(object sender, EventArgs e)        {            //HorizontalScrollbar  使其能水平方向滚动条            listBox1.HorizontalScrollbar = true;            //ScrollAlwaysVisible =true 水质方向 滚动条            listBox1.ScrollAlwaysVisible = true;            //SelectionMode 设置为 SelectedMode 枚举成员 MultiExtended 实现选择多项            listBox1.SelectionMode = SelectionMode.MultiExtended;        }        private void button1_Click(object sender, EventArgs e)        {            FolderBrowserDialog folderbrowser = new FolderBrowserDialog(); //实例化对话框           if(folderbrowser.ShowDialog()==DialogResult.OK)           {               textBox1.Text = folderbrowser.SelectedPath;//获取选择的文件夹路径               DirectoryInfo dinfo = new DirectoryInfo(textBox1.Text);               FileSystemInfo[] finfo = dinfo.GetFileSystemInfos();//获取指定文件夹下的所有子文件夹及文件               listBox1.Items.AddRange(finfo);               label3.Text="("+listBox1.Items.Count+"项)"; //显示文件夹中的项数           }        }        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)        {            label4.Text = "您选择的是: ";            for(int i=0;i<listBox1.SelectedItems.Count;i++)                //循环遍历选择的多项            {                label4.Text += listBox1.SelectedItems[i] + ",";            }        }    }}

Form1设计

namespace LiestBox_1
{
    partial class Form1
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;


        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }


        #region Windows 窗体设计器生成的代码


        /// <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.label1 = new System.Windows.Forms.Label();
            this.button1 = new System.Windows.Forms.Button();
            this.label2 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.label4 = new System.Windows.Forms.Label();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(13, 31);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(71, 12);
            this.label1.TabIndex = 0;
            this.label1.Text = "选择文件夹:";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(277, 26);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 1;
            this.button1.Text = "选择";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(13, 63);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(107, 12);
            this.label2.TabIndex = 3;
            this.label2.Text = "文件夹中文件列表:";
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.Location = new System.Drawing.Point(126, 63);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(0, 12);
            this.label3.TabIndex = 4;
            // 
            // listBox1
            // 
            this.listBox1.FormattingEnabled = true;
            this.listBox1.ItemHeight = 12;
            this.listBox1.Location = new System.Drawing.Point(51, 91);
            this.listBox1.Name = "listBox1";
            this.listBox1.Size = new System.Drawing.Size(327, 136);
            this.listBox1.TabIndex = 5;
            this.listBox1.SelectedIndexChanged += new System.EventHandler(this.listBox1_SelectedIndexChanged);
            // 
            // label4
            // 
            this.label4.AutoSize = true;
            this.label4.Location = new System.Drawing.Point(13, 239);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(0, 12);
            this.label4.TabIndex = 6;
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(91, 27);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(180, 21);
            this.textBox1.TabIndex = 7;
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(401, 270);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.listBox1);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.label1);
            this.Name = "Form1";
            this.Text = "文件查看选择";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);
            this.PerformLayout();


        }


        #endregion


        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.ListBox listBox1;
        private System.Windows.Forms.Label label4;
        private System.Windows.Forms.TextBox textBox1;
    }
}