/// <summary>
/// Return the index into the system image list of the image that represents the given file.
/// </summary>
/// <param name="path">The full path to the file or directory whose icon is required</param>
/// <returns>The index of the icon, or -1 if something goes wrong</returns>
/// <remarks>This is only useful if you are using the system image lists directly. Since there is
/// no way to do that in .NET, it isn't a very useful.</remarks>
public static int GetSysImageIndex(string path)
{
SHFILEINFO shfi = new SHFILEINFO();
int flags = SHGFI_ICON | SHGFI_SYSICONINDEX;
IntPtr result = ShellUtilities.SHGetFileInfo(path, 0, out shfi, Marshal.SizeOf(shfi), flags);
if (result.ToInt32() == 0)
{
return(-1);
}
else
{
return(shfi.iIcon);
}
}
/// <summary>
/// Get the string that describes the file's type.
/// </summary>
/// <param name="path">The file or directory whose type is to be fetched</param>
/// <returns>A string describing the type of the file, or an empty string if something goes wrong.</returns>
public static string GetFileType(string path)
{
SHFILEINFO shfi = new SHFILEINFO();
int flags = SHGFI_TYPENAME;
IntPtr result = ShellUtilities.SHGetFileInfo(path, 0, out shfi, Marshal.SizeOf(shfi), flags);
if (result.ToInt32() == 0)
{
return(String.Empty);
}
else
{
return(shfi.szTypeName);
}
}
/// <summary>
/// Return the icon for the given file/directory.
/// </summary>
/// <param name="path">The full path to the file whose icon is to be returned</param>
/// <param name="isSmallImage">True if the small (16x16) icon is required, otherwise the 32x32 icon will be returned</param>
/// <param name="useFileType">If this is true, only the file extension will be considered</param>
/// <returns>The icon of the given file, or null if something goes wrong</returns>
public static Icon GetFileIcon(string path, bool isSmallImage, bool useFileType)
{
int flags = SHGFI_ICON;
if (isSmallImage)
{
flags |= SHGFI_SMALLICON;
}
int fileAttributes = 0;
if (useFileType)
{
flags |= SHGFI_USEFILEATTRIBUTES;
if (System.IO.Directory.Exists(path))
{
fileAttributes = FILE_ATTRIBUTE_DIRECTORY;
}
else
{
fileAttributes = FILE_ATTRIBUTE_NORMAL;
}
}
SHFILEINFO shfi = new SHFILEINFO();
IntPtr result = ShellUtilities.SHGetFileInfo(path, fileAttributes, out shfi, Marshal.SizeOf(shfi), flags);
if (result.ToInt32() == 0)
{
return(null);
}
else
{
return(Icon.FromHandle(shfi.hIcon));
}
}
void InitializeTreeListExample()
{
this.treeListView.HierarchicalCheckboxes = true;
this.treeListView.HideSelection = false;
this.treeListView.CanExpandGetter = delegate(object x) {
return(((MyFileSystemInfo)x).IsDirectory);
};
this.treeListView.ChildrenGetter = delegate(object x) {
MyFileSystemInfo myFileSystemInfo = (MyFileSystemInfo)x;
try
{
return(myFileSystemInfo.GetFileSystemInfos());
}
catch (UnauthorizedAccessException ex)
{
MessageBox.Show(this, ex.Message, "ObjectListViewDemo", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return(new ArrayList());
}
};
// You can change the way the connection lines are drawn by changing the pen
TreeListView.TreeRenderer renderer = this.treeListView.TreeColumnRenderer;
renderer.LinePen = new Pen(Color.Firebrick, 0.5f);
renderer.LinePen.DashStyle = DashStyle.Dot;
//-------------------------------------------------------------------
// Eveything after this is the same as the Explorer example tab --
// nothing specific to the TreeListView. It doesn't have the grouping
// delegates, since TreeListViews can't show groups.
// Draw the system icon next to the name
SysImageListHelper helper = new SysImageListHelper(this.treeListView);
this.colName.ImageGetter = delegate(object x) {
return(helper.GetImageIndex(((MyFileSystemInfo)x).FullName));
};
// Show the size of files as GB, MB and KBs. Also, group them by
// some meaningless divisions
this.colSize.AspectGetter = delegate(object x) {
MyFileSystemInfo myFileSystemInfo = (MyFileSystemInfo)x;
if (myFileSystemInfo.IsDirectory)
{
return((long)-1);
}
try
{
return(myFileSystemInfo.Length);
}
catch (System.IO.FileNotFoundException)
{
// Mono 1.2.6 throws this for hidden files
return((long)-2);
}
};
this.colSize.AspectToStringConverter = delegate(object x) {
if ((long)x == -1) // folder
{
return("");
}
return(FormatFileSize((long)x));
};
// Show the system description for this object
this.colType.AspectGetter = delegate(object x) {
return(ShellUtilities.GetFileType(((MyFileSystemInfo)x).FullName));
};
// Show the file attributes for this object
this.colAttrs.AspectGetter = delegate(object x) {
return(((MyFileSystemInfo)x).Attributes);
};
FlagRenderer attributesRenderer = new FlagRenderer();
attributesRenderer.Add(FileAttributes.Archive, "archive");
attributesRenderer.Add(FileAttributes.ReadOnly, "readonly");
attributesRenderer.Add(FileAttributes.System, "system");
attributesRenderer.Add(FileAttributes.Hidden, "hidden");
attributesRenderer.Add(FileAttributes.Temporary, "temporary");
this.colAttrs.Renderer = attributesRenderer;
this.colAttrs.ClusteringStrategy = new FlagClusteringStrategy(typeof(FileAttributes));
// List all drives as the roots of the tree
ArrayList roots = new ArrayList();
foreach (DriveInfo di in DriveInfo.GetDrives())
{
if (di.IsReady)
{
roots.Add(new MyFileSystemInfo(new DirectoryInfo(di.Name)));
break;
}
}
this.treeListView.Roots = roots;
}
/// <summary>
/// Execute the given operation on the file or directory identified by the given path.
/// Example operations are "edit", "print", "explore".
/// </summary>
/// <param name="path">The file or directory to be operated on</param>
/// <param name="operation">What operation should be performed</param>
/// <returns>Values < 31 indicate some sort of error. See ShellExecute() documentation for specifics.</returns>
public static int Execute(string path, string operation)
{
IntPtr result = ShellUtilities.ShellExecute(0, operation, path, "", "", SW_SHOWNORMAL);
return(result.ToInt32());
}
/// <summary>
/// Execute the default verb on the file or directory identified by the given path.
/// For documents, this will open them with their normal application. For executables,
/// this will cause them to run.
/// </summary>
/// <param name="path">The file or directory to be executed</param>
/// <returns>Values < 31 indicate some sort of error. See ShellExecute() documentation for specifics.</returns>
/// <remarks>The same effect can be achieved by <code>System.Diagnostics.Process.Start(path)</code>.</remarks>
public static int Execute(string path)
{
return(ShellUtilities.Execute(path, ""));
}
