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使用ListView模仿Windows系统的资源管理器界面，实现文件(夹)的浏览、重命名、删除及查询等功能，主要功能界面展示如下：
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 Controls
{
public partial class MainForm : Form
{
#region 成员变量
/// <summary>
/// 用于递归计算文件夹大小
/// </summary>
private long folderSize = 0;
/// <summary>
///打开文件夹根路径
/// </summary>
private string rootPath = string.Empty;
#endregion
#region 初期化
/// <summary>
/// 默认构造函数
/// </summary>
public MainForm()
{
InitializeComponent();
//给窗体注册键盘事件
this.KeyPreview = true;
}
/// <summary>
/// 初始化窗体,绑定事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MainForm_Load(object sender, EventArgs e)
{
this.大图标ToolStripMenuItem.Click += new System.EventHandler(this.ToolStripMenuItem_Click);
this.详细信息ToolStripMenuItem.Click += new System.EventHandler(this.ToolStripMenuItem_Click);
this.平铺ToolStripMenuItem.Click += new System.EventHandler(this.ToolStripMenuItem_Click);
this.小图标ToolStripMenuItem.Click += new System.EventHandler(this.ToolStripMenuItem_Click);
this.列表ToolStripMenuItem.Click += new System.EventHandler(this.ToolStripMenuItem_Click);
}
#endregion
#region 事件处理
/// <summary>
/// 搜索框符合条件的人员
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnSearch_Click(object sender, EventArgs e)
{
AddItemsToListView(txtPath.Text, txtSearch.Text.Trim());
AddHeaderToListView(this.lvwData);
}
/// <summary>
/// 给搜索框添加Enter快捷键
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MainForm_KeyDown(object sender, KeyEventArgs e)
{
//搜索框获得焦点且按下Enter键时，执行搜索
if (txtSearch.Focused && e.KeyCode == Keys.Enter)
{
this.btnSearch_Click(sender, e);
}
}
/// <summary>
/// 返回上级目录
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnUp_Click(object sender, EventArgs e)
{
if (txtPath.Text == rootPath || !txtPath.Text.Contains("\\"))
{
return;
}
//找到文件夹上级目录的绝对路径
txtPath.Text = txtPath.Text.Substring(0, txtPath.Text.LastIndexOf("\\"));
AddItemsToListView(txtPath.Text);
AddHeaderToListView(this.lvwData);
}
/// <summary>
/// 打开文件夹，显示文件夹
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnFolder_Click(object sender, EventArgs e)
{
DialogResult dr = fbdData.ShowDialog();
string path = fbdData.SelectedPath.ToString();
if (dr == DialogResult.OK && path != "")
{
rootPath = path;
txtPath.Text = path;
}
}
/// <summary>
/// 新建文件夹，选中文件夹
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnAdd_Click(object sender, EventArgs e)
{
string fullpath = string.Empty;
AddForm addForm = new AddForm(btnAdd.Text);
addForm.ShowDialog();
if (addForm.ButtonFlag)
{
fullpath = txtPath.Text + "\\" + addForm.TxtName;
}
else
{
return; //排除关闭窗口异常
}
try
{
if (Directory.Exists(fullpath))
{
MessageBox.Show("该文件名已经存在！", "提示");
return;
}
Directory.CreateDirectory(fullpath);
AddItemsToListView(txtPath.Text);
AddHeaderToListView(this.lvwData);
}
catch (NullReferenceException ex)
{
MessageBox.Show(ex.Message, "提示");
}
finally
{
//选中新增的项，并显示在视野范围内
for (int i = 0; i < lvwData.Items.Count; i++)
{
if (lvwData.Items[i].Tag.ToString() == fullpath)
{
//先设置ListView选中
lvwData.Focus();
lvwData.Items[i].Selected = true;
//在视野范围内显示
lvwData.EnsureVisible(i);
break;
}
}
}
}
/// <summary>
/// 重命名文件夹
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnRename_Click(object sender, EventArgs e)
{
if (lvwData.SelectedItems.Count <= 0)
{
return;
}
string fullName = lvwData.SelectedItems[0].Tag.ToString();
string path = fullName.Substring(0, fullName.LastIndexOf("\\") + 1);//文件路径
string suffix = GetSuffixName(fullName);//后缀名
//文件名或文件夹名
string fileName = string.Empty;
if (suffix != string.Empty)
{
fileName = fullName.Substring(fullName.LastIndexOf("\\") + 1,
fullName.LastIndexOf(".") - fullName.LastIndexOf("\\") - 1);//文件名
}
else
{
fileName = fullName.Substring(fullName.LastIndexOf("\\") + 1);//文件夹名
}
string fullPath = string.Empty;
AddForm addForm = new AddForm(btnRename.Text, fileName);
addForm.ShowDialog();
if (suffix != string.Empty)
{
fullPath = path + addForm.TxtName + "." + suffix;
}
else
{
fullPath = path + addForm.TxtName;
}
//直接关闭窗口时
if (!addForm.ButtonFlag)
{
return;
}
try
{
//重命名文件夹
if (suffix == string.Empty)
{
if (Directory.Exists(fullPath))
{
MessageBox.Show("该文件名已经存在！", "提示");
return;
}
Directory.Move(fullName, fullPath);
}
//重命名文件
else
{
if (File.Exists(fullPath))
{
MessageBox.Show("该文件名已经存在！", "提示");
return;
}
File.Move(fullName, fullPath);
}
AddItemsToListView(txtPath.Text);
AddHeaderToListView(this.lvwData);
}
catch (NullReferenceException ex)
{
MessageBox.Show(ex.Message);
}
}
/// <summary>
/// 删除文件夹
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnDelete_Click(object sender, EventArgs e)
{
int count = lvwData.SelectedItems.Count;
if (count <= 0)
{
return;
}
DialogResult result = MessageBox.Show("你确定删除这" + count + "项吗？", "提示",
MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (result == DialogResult.Yes)
{
string path;
ListViewItem selectitem;
for (int i = 0; i < lvwData.SelectedItems.Count; ) //此处不能i++
{
selectitem = lvwData.SelectedItems[i];
path = selectitem.Tag.ToString();
lvwData.Items.Remove(selectitem);
if (File.Exists(path))
{
File.Delete(path);
}
else if (Directory.Exists(path))
{
Directory.Delete(path, true);
}
lvwData.Update();
}
}
}
/// <summary>
/// List选中项时发生
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void lvwData_ItemActivate(object sender, EventArgs e)
{
ListView lv = (ListView)sender;
if (lv.SelectedItems.Count <= 0)
{
return;
}
string filename = lv.SelectedItems[0].Tag.ToString();
//如果是文件夹，就打开它
if (Directory.Exists(filename))
{
AddItemsToListView(filename);
AddHeaderToListView(this.lvwData);
//获取打开的文件夹路径
txtPath.Text = filename;
}
//如果是文件，就执行它
else
{
System.Diagnostics.Process.Start(filename);
}
}
/// <summary>
/// 根据路径的后缀名控制按钮的状态
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void txtPath_TextChanged(object sender, EventArgs e)
{
AddItemsToListView(txtPath.Text);
AddHeaderToListView(this.lvwData);
}
/// <summary>
/// ListView列表显示样式
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ToolStripMenuItem_Click(object sender, EventArgs e)
{
ToolStripMenuItem tsMenumItem = sender as ToolStripMenuItem;
if (tsMenumItem.Checked)
{
return;//已经选中则返回
}
else
{
//清除勾选的右键菜单项
ClearCheckState(cmsStyle);
//勾选选中的右键菜单项
tsMenumItem.Checked = true;
}
switch (tsMenumItem.Text)
{
case "大图标":
lvwData.View = View.LargeIcon;
break;
case "详细信息":
lvwData.View = View.Details;
break;
case "小图标":
lvwData.View = View.SmallIcon;
break;
case "列表":
lvwData.View = View.List;
break;
case "平铺":
lvwData.View = View.Tile;
break;
}
}
/// <summary>
/// 清除勾选的右键菜单项
/// </summary>
/// <param name="cms">右键菜单</param>
/// <param name="clearAll">是否全部清除</param>
private void ClearCheckState(ContextMenuStrip cms, bool clearAll = false)
{
ToolStripMenuItem tsMenumItemTemp;
for (int i = 0; i < cms.Items.Count; i++)
{
if (!(cms.Items[i] is ToolStripMenuItem))
{
continue;
}
tsMenumItemTemp = cms.Items[i] as ToolStripMenuItem;
if (tsMenumItemTemp.Checked)
{
tsMenumItemTemp.Checked = false;
if (!clearAll)
{
break;
}
}
}
}
#endregion
#region 设置ListView的显示样式
/// <summary>
/// 根据后缀名，设置listview显示样式
/// </summary>
/// <param name="root">根节点</param>
/// <param name="keywords">搜索关键字</param>
private void AddItemsToListView(string root, string keywords = "")
{
//把listview里的所有选项与所有列名都删除
lvwData.Clear();
lvwData.BeginUpdate();
//文件
if (File.Exists(root))
{
AddFileToListView(new FileInfo(root), keywords);
}
//文件夹
else
{
DirectoryInfo dir = new DirectoryInfo(root);
DirectoryInfo[] dirs = dir.GetDirectories();
FileInfo[] files = dir.GetFiles();
//把文件夹信息添加到listview的选项中
foreach (DirectoryInfo directoryInfo in dirs)
{
AddFolderToListView(directoryInfo, keywords);
}
//把文件夹下文件信息添加到listview的选项中
foreach (FileInfo fileInfo in files)
{
AddFileToListView(fileInfo, keywords);
}
}
this.lvwData.EndUpdate();
}
/// <summary>
/// 将文件添加到ListView中显示
/// </summary>
/// <param name="fileInfo">文件全路径</param>
/// <param name="keywords">搜索关键字</param>
private void AddFileToListView(FileInfo fileInfo, string keywords)
{
ListViewItem lvi = new ListViewItem();//文件项
lvi.Tag = fileInfo.FullName;
lvi.Text = fileInfo.Name;
lvi.ImageIndex = imgLarge.Images.Count - 1;
if (keywords != "" && (!lvi.Text.Contains(keywords)))
{
return;//搜索不到关键字，不将文件添加到ListView中显示
}
//文件的名称属性项
lvi.SubItems[0].Tag = lvi.Tag;
lvi.SubItems[0].Text = lvi.Text;
//文件大小属性项
ListViewItem.ListViewSubItem lvsi = new ListViewItem.ListViewSubItem();
lvsi.Tag = fileInfo.Length;
lvsi.Text = fileInfo.Length / 1024 + " KB";
lvi.SubItems.Add(lvsi);
//修改日期属性项
lvsi = new ListViewItem.ListViewSubItem();
lvsi.Tag = fileInfo.LastAccessTime.ToString();
lvsi.Text = fileInfo.LastAccessTime.ToString();
lvi.SubItems.Add(lvsi);
//添加文件
this.lvwData.Items.Add(lvi);
}
/// <summary>
/// 将文件夹添加到ListView中显示
/// </summary>
/// <param name="DirectoryInfo">文件夹</param>
/// <param name="keywords">搜索关键字</param>
private void AddFolderToListView(DirectoryInfo DirectoryInfo, string keywords)
{
ListViewItem lvi = new ListViewItem();
lvi.Tag = DirectoryInfo.FullName;
lvi.Text = DirectoryInfo.Name;//显示名称
lvi.ImageIndex = 0;
if (keywords != "" && (!lvi.Text.Contains(keywords)))
{
return;//搜索不到关键字，不将文件夹添加到ListView中显示
}
// 文件夹的名称属性项
lvi.SubItems[0].Tag = lvi.Tag;
lvi.SubItems[0].Text = lvi.Text;
//文件夹大小属性项
ListViewItem.ListViewSubItem lvsi = new ListViewItem.ListViewSubItem();
lvsi.Tag = GetFolderSize(DirectoryInfo);
lvsi.Text = FormatFolderSize(folderSize);
folderSize = 0;//清零计算文件夹大小的变量
lvi.SubItems.Add(lvsi);
//修改日期属性项
lvsi = new ListViewItem.ListViewSubItem();
lvsi.Tag = DirectoryInfo.LastAccessTime.ToString();
lvsi.Text = DirectoryInfo.LastAccessTime.ToString();
lvi.SubItems.Add(lvsi);
//添加文件夹
this.lvwData.Items.Add(lvi);
}
/// <summary>
/// 递归计算文件夹的大小
/// </summary>
/// <param name="DirectoryInfo">文件夹</param>
/// <returns>文件夹大小</returns>
private long GetFolderSize(DirectoryInfo DirectoryInfo)
{
DirectoryInfo[] dirs = DirectoryInfo.GetDirectories();
FileInfo[] files = DirectoryInfo.GetFiles();
//是文件夹时，继续递归
if (dirs.Length > 0)
{
foreach (DirectoryInfo dir in dirs)
{
GetFolderSize(dir);
}
}
//是文件时，进行累加计算
foreach (FileInfo fi in files)
{
folderSize = folderSize + fi.Length;
}
return folderSize;
}
/// <summary>
/// 将文件夹大小转化为直观的文字显示
/// </summary>
/// <param name="size">文件夹大小</param>
/// <returns>文件夹大小的文字表示</returns>
private string FormatFolderSize(long size)
{
if ((size >> 20) > 0)
{
//保留两位小数
return ((size >> 10) / 1024.0).ToString("F2") + " MB";
}
else
{
return (size >> 10) + " KB";
}
}
/// <summary>
/// 为listview添加列标题
/// </summary>
private void AddHeaderToListView(ListView listView)
{
ColumnHeader ch = new ColumnHeader();
ch.Text = "文件名";
ch.Width = 120;
listView.Columns.Add(ch);
ch = new ColumnHeader();
ch.Width = 70;
ch.Text = "大小";
listView.Columns.Add(ch);
ch = new ColumnHeader();
ch.Text = "修改日期";
ch.Width = 140;
listView.Columns.Add(ch);
}
#endregion
#region 经常使用的公共方法
/// <summary>
/// 获取文件后缀名(小写)
/// </summary>
/// <param name="path">文件全路径或文件名</param>
public string GetSuffixName(string path)
{
string suffix = string.Empty;
if (path.Contains("."))
{
suffix = path.Substring(path.LastIndexOf(".") + 1);//后缀名
}
return suffix.ToLower();
}
/// <summary>
/// 获取应用程序根路径
/// </summary>
public static string GetApplicationPath()
{
string path = Application.StartupPath;
string folderName = String.Empty;
while (folderName.ToLower() != "bin")
{
path = path.Substring(0, path.LastIndexOf("\\"));
folderName = path.Substring(path.LastIndexOf("\\") + 1);
}
return path.Substring(0, path.LastIndexOf("\\") + 1);
}
#endregion
}
}