ListView做的demo：显示电脑磁盘文件

kiki.

发布于 2022-09-29 08:05:53

5870

发布于 2022-09-29 08:05:53

文章被收录于专栏：web全栈之路

盘符所在区域是一个lable，命名为labelCurrentPath，最右边lable命名为ViewMode，5种显示方式，使用RadioButton控件，最下边的button作用为显示上一级，显示内容区域当然是ListView了，命名为listViewFilesAndFolders

构造函数：调用两个函数并用根文件夹实例化folderCol StringCollection字符串集合

private System.Collections.Specialized.StringCollection folderCol;

        public Form1()
        {
            InitializeComponent();
            folderCol = new System.Collections.Specialized.StringCollection();
            CreateHeadersAndFillListView();
            PatientListView(@"D:\");
            folderCol.Add(@"D:\");
        }

1.创建列标题

<pre name="code" class="csharp">        private void CreateHeadersAndFillListView()
        {
            ColumnHeader colHead;
            colHead = new ColumnHeader();
            colHead.Text = "Fileame";
            listViewFilesAndFolders.Columns.Add(colHead);

            colHead = new ColumnHeader();
            colHead.Text = "Size";
            listViewFilesAndFolders.Columns.Add(colHead);

            colHead = new ColumnHeader();
            colHead.Text = "Last accessed";
            listViewFilesAndFolders.Columns.Add(colHead);
        }

2.在第一次显示窗体时，最后初始化的是磁盘上的文件和文件夹填充列表视图，通过以下方法实现

//打开的文件路径
        private void PatientListView(string root)
        {
            try
            {
                ListViewItem lvi;
                ListViewItem.ListViewSubItem lvsi;

                if (string.IsNullOrEmpty(root))
                    return;
                DirectoryInfo dir = new DirectoryInfo(root);
                DirectoryInfo[] dirs = dir.GetDirectories();
                FileInfo[] files = dir.GetFiles();

                listViewFilesAndFolders.Items.Clear();
                labelCurrentPath.Text = root;
                listViewFilesAndFolders.BeginUpdate();


                foreach (DirectoryInfo di in dirs)
                {
                    lvi = new ListViewItem();
                    lvi.Text = di.Name;
                    lvi.ImageIndex = 0;
                    lvi.Tag = di.FullName;

                    lvsi = new ListViewItem.ListViewSubItem();
                    lvsi.Text = "";
                    lvi.SubItems.Add(lvsi);
                    lvsi = new ListViewItem.ListViewSubItem();
                    lvsi.Text = di.LastAccessTime.ToString();
                    lvi.SubItems.Add(lvsi);
                    listViewFilesAndFolders.Items.Add(lvi);
                }
                foreach (FileInfo fi in files)
                {
                    lvi = new ListViewItem();
                    lvi.Text = fi.Name;
                    lvi.ImageIndex = 1;
                    lvi.Tag = fi.FullName;

                    lvsi = new ListViewItem.ListViewSubItem();
                    lvsi.Text = fi.Length.ToString();
                    lvi.SubItems.Add(lvsi);

                    lvsi = new ListViewItem.ListViewSubItem();
                    lvsi.Text = fi.LastAccessTime.ToString();
                    lvi.SubItems.Add(lvsi);
                    listViewFilesAndFolders.Items.Add(lvi);
                }

                listViewFilesAndFolders.EndUpdate();
            }
            catch (Exception err)
            {
                MessageBox.Show("Error: "+err.Message);
                //throw;
            }
            //根据列内容自动调整列宽
            listViewFilesAndFolders.AutoResizeColumns(ColumnHeaderAutoResizeStyle.ColumnContent); 
        }

3.为了允许用户通过双击ListView中的选项来浏览文件夹，需订阅ItemActivate事件

 private void listViewFilesAndFolders_ItemActivate(object sender, EventArgs e)
        {
            System.Windows.Forms.ListView lw = (System.Windows.Forms.ListView)sender;
            string filename = lw.SelectedItems[0].Tag.ToString();


            if (lw.SelectedItems[0].ImageIndex != 0)
            {
                try
                {
                    System.Diagnostics.Process.Start(filename);
                }
                catch (Exception)
                {
                    return;
                }
            }
            else
            {
                PatientListView(filename);
                folderCol.Add(filename);
            }
            
        }

4.Button处理;

//返回上一级
        private void button1_Click(object sender, EventArgs e)
        {
            if (folderCol.Count > 1)
            {
                PatientListView(folderCol[folderCol.Count - 2].ToString());
                folderCol.RemoveAt(folderCol.Count - 1);
            }
            else
            {
                PatientListView(folderCol[0].ToString());
            }
        }

5.最后修改列表视图的查看类型：

private void radioButtonLargeIcon_CheckedChanged_1(object sender, EventArgs e)
        {
            RadioButton rdb = (RadioButton)sender;
            if (rdb.Checked)
                this.listViewFilesAndFolders.View = View.LargeIcon;
        }

        private void radioButtonSmallIcon_CheckedChanged(object sender, EventArgs e)
        {
            RadioButton rdb = (RadioButton)sender;
            if (rdb.Checked)
                this.listViewFilesAndFolders.View = View.SmallIcon;
        }

        private void radioButtonList_CheckedChanged(object sender, EventArgs e)
        {
            RadioButton rdb = (RadioButton)sender;
            if (rdb.Checked)
                this.listViewFilesAndFolders.View = View.List;
        }

        private void radioButtonDetails_CheckedChanged(object sender, EventArgs e)
        {
            RadioButton rdb = (RadioButton)sender;
            if (rdb.Checked)
                this.listViewFilesAndFolders.View = View.Details;
        }

        private void radioButtonTile_CheckedChanged(object sender, EventArgs e)
        {
            RadioButton rdb = (RadioButton)sender;
            if (rdb.Checked)
                this.listViewFilesAndFolders.View = View.Tile;
        }

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原始发表：2015-10-30，如有侵权请联系 cloudcommunity@tencent.com 删除

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