一、前言
Treeview控件常用于遍历本地文件信息，通常与Datagridview与ImageList搭配。ImageList控件用于提供小图片给TreeView控件，DatagridView通常显示TreeNode节点下文件及文件夹的信息。
效果图：
二、代码
初始化窗体：
private void ManagerForm_Load(object sender, EventArgs e)
{
InitialDataGridView(dgv_Local); //初始化本地dgv InitialTreeView(); //初始化本地tree
}
初始化DataGridView：
public void InitialDataGridView(DataGridView dgv)
{
DataGridViewColumn dgv_check = new DataGridViewCheckBoxColumn();
dgv_check.HeaderText = "选择";
dgv.Columns.Add(dgv_check); DataGridViewColumn dgv_name = new DataGridViewTextBoxColumn();
dgv_name.HeaderText = "名称";
dgv.Columns.Add(dgv_name);
dgv_name.ReadOnly = true; DataGridViewColumn dgv_length = new DataGridViewTextBoxColumn();
dgv_length.HeaderText = "大小";
dgv.Columns.Add(dgv_length);
dgv_length.ReadOnly = true; DataGridViewColumn dgv_type = new DataGridViewTextBoxColumn();
dgv_type.HeaderText = "类型";
dgv.Columns.Add(dgv_type);
dgv_type.ReadOnly = true; DataGridViewColumn dgv_version = new DataGridViewTextBoxColumn();
dgv_version.HeaderText = "版本";
dgv.Columns.Add(dgv_version);
dgv_version.ReadOnly = true; dgv.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
dgv.AllowUserToAddRows = false;
dgv.RowHeadersVisible = false;
dgv.AllowUserToResizeRows = false;
dgv.Columns[].Width = (int)((double)(dgv.Width) * 0.1);
dgv.Columns[].Width = (int)((double)(dgv.Width) * 0.45);
}
初始化本地TreeView：
public void InitialTreeView()
{
TreeNode tv_mycomputer = new TreeNode("我的电脑");
tv_mycomputer.ImageIndex = ;
tv_mycomputer.SelectedImageIndex = ;
tv_Local.Nodes.Add(tv_mycomputer); DriveInfo[] drives = DriveInfo.GetDrives();
string driveName = "";
foreach (DriveInfo drive in drives)
{
switch (drive.DriveType)
{
case DriveType.Fixed:
driveName = "本地磁盘(" + drive.Name.Substring(, ) + ")";
break;
case DriveType.Removable:
driveName = "可移动磁盘(" + drive.Name.Substring(, ) + ")";
break;
case DriveType.CDRom:
driveName = "DVD驱动器(" + drive.Name.Substring(, ) + ")";
break;
case DriveType.Network:
driveName = "网络驱动器(" + drive.Name.Substring(, ) + ")";
break;
default:
driveName = "未知(" + drive.Name + ")";
break;
}
TreeNode tr_cd = new TreeNode();
tr_cd.Text = driveName;
tr_cd.ImageIndex = ;
tr_cd.SelectedImageIndex = ;
LoadDirectory(Path.GetFullPath(drive.Name), tr_cd); //取得第一级磁盘信息
tv_mycomputer.Nodes.Add(tr_cd);
}
}
LoadDirectory方法：
public void LoadDirectory(string path, TreeNode tNode)
{
try
{
//遍历文件夹信息
string[] directorys = Directory.GetDirectories(path);
foreach (string item in directorys)
{
if ((File.GetAttributes(item) & FileAttributes.Hidden) != FileAttributes.Hidden)
{
TreeNode tn_Dir = new TreeNode(Path.GetFileName(item));
tn_Dir.ImageIndex = ;
tn_Dir.SelectedImageIndex = ;
tn_Dir.Name = item;
tNode.Nodes.Add(tn_Dir);
}
}
if (path.Contains("System Volume Information"))
{
return;
} //遍历文件信息
string[] files = Directory.GetFiles(path);
foreach (string item in files)
{
string eName = Path.GetExtension(item);
if ((File.GetAttributes(item) & FileAttributes.Hidden) != FileAttributes.Hidden)
{
TreeNode tn_file = new TreeNode(Path.GetFileNameWithoutExtension(item));
tn_file.ImageIndex = ;
tn_file.SelectedImageIndex = ;
tn_file.Name = item;
tNode.Nodes.Add(tn_file);
}
}
}
catch { }
}
AfterExpand方法：用于点击Node时快速加载，而不是在窗体加载时直接加载整个电脑的磁盘信息，因为那样太慢了
private void tv_Local_AfterExpand(object sender, TreeViewEventArgs e)
{
if (e.Node.Level >= )
{
foreach (TreeNode tnode in e.Node.Nodes)
{
tnode.Nodes.Clear();
if (!Path.HasExtension(tnode.Name))
{
LoadDirectory(tnode.Name, tnode);
}
}
}
}
NodeMouseClick：点击Node显示该节点信息
private void tv_Local_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
Thread.Sleep();
if(e.Node.FullPath=="我的电脑")
{
txt_Local.Text = "My Computer";
}
else if(e.Node.FullPath.Contains("(")&&e.Node.Level<=)
{
txt_Local.Text = e.Node.FullPath.Split('\\')[].Split('(')[].Replace(')','\\');
}
else
{
txt_Local.Text = e.Node.Name;
this.dgv_Local.Rows.Clear();
if (e.Node.Level > )
{
Loadallinfo(e.Node.Name, dgv_Local);
}
} }
Loadallinfo:用于DataGridview显示信息
public void Loadallinfo(string path,DataGridView dgv)
{
if (Directory.Exists(path))
{
try
{
string[] directorys = Directory.GetDirectories(path); //获取选中treeview节点的子目录
foreach (string item in directorys)
{
if ((File.GetAttributes(item) & FileAttributes.Hidden) != FileAttributes.Hidden)
{
int index = dgv.Rows.Add();
dgv.Rows[index].Cells[].Value = item;
dgv.Rows[index].Cells[].Value = CountSize(GetDirectoryLength(item)).ToString();
dgv.Rows[index].Cells[].Value = "文件夹";
dgv.Rows[index].Cells[].Value = "";
}
}
if (path.Contains("System Volume Information"))
{
return;
}
string[] files = Directory.GetFiles(path);
foreach (string item in files)
{
string eName = Path.GetExtension(item);
if ((File.GetAttributes(item) & FileAttributes.Hidden) != FileAttributes.Hidden)
{
int index = dgv.Rows.Add();
dgv.Rows[index].Cells[].Value = item;
System.IO.FileInfo file = new System.IO.FileInfo(item);
dgv.Rows[index].Cells[].Value = CountSize(file.Length).ToString();
dgv.Rows[index].Cells[].Value = Path.GetExtension(item);
if (Path.GetExtension(item) == ".dll")
{
FileVersionInfo ver = FileVersionInfo.GetVersionInfo(item);
dgv.Rows[index].Cells[].Value = ver.FileVersion;
}
else
{
dgv.Rows[index].Cells[].Value = "";
}
}
}
}
catch { } }
else if (File.Exists(path))
{
try
{
string item = path;
int index = dgv.Rows.Add();
dgv.Rows[index].Cells[].Value = item;
dgv.Rows[index].Cells[].Value = CountSize(item.Length).ToString();
dgv.Rows[index].Cells[].Value = Path.GetExtension(item);
if (Path.GetExtension(item) == ".dll")
{
FileVersionInfo ver = FileVersionInfo.GetVersionInfo(item);
dgv.Rows[index].Cells[].Value = ver.FileVersion;
}
else
{
dgv.Rows[index].Cells[].Value = "";
}
}
catch { }
} }
计算文件大小：
#region 文件大小换算
public static string CountSize(long Size)
{
string m_strSize = "";
long FactSize = ;
FactSize = Size;
if (FactSize < 1024.00)
m_strSize = FactSize.ToString("F2") + " B";
else if (FactSize >= 1024.00 && FactSize < )
m_strSize = (FactSize / 1024.00).ToString("F2") + " K";
else if (FactSize >= && FactSize < )
m_strSize = (FactSize / 1024.00 / 1024.00).ToString("F2") + " M";
else if (FactSize >= )
m_strSize = (FactSize / 1024.00 / 1024.00 / 1024.00).ToString("F2") + " G";
return m_strSize;
}
#endregion #region 文件夹大小计算
public static long GetDirectoryLength(string path)
{
if (!Directory.Exists(path))
{
return ;
}
long size = ;
DirectoryInfo di = new DirectoryInfo(path);
foreach (FileInfo fi in di.GetFiles())
{
size += fi.Length;
}
DirectoryInfo[] dis = di.GetDirectories();
if (dis.Length > )
{
for (int i = ; i < dis.Length; i++)
{
size += GetDirectoryLength(dis[i].FullName);
}
}
return size;
}
#endregion