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;
}
}