public void PopulateSystemProperties()
{
IPropertyDescriptionList propertyDescriptionList = null;
IPropertyDescription propertyDescription = null;
Guid guid = new Guid(ShellIIDGuid.IPropertyDescriptionList);
try
{
int hr = PropertySystemNativeMethods.PSEnumeratePropertyDescriptions(PropertySystemNativeMethods.PropDescEnumFilter.PDEF_ALL, ref guid, out propertyDescriptionList);
if (hr >= 0)
{
uint count;
propertyDescriptionList.GetCount(out count);
guid = new Guid(ShellIIDGuid.IPropertyDescription);
Dictionary <string, List <string> > dict = new Dictionary <string, List <string> >();
for (uint i = 0; i < count; i++)
{
propertyDescriptionList.GetAt(i, ref guid, out propertyDescription);
string propName;
propertyDescription.GetCanonicalName(out propName);
List <string> names = null;
string[] parts = propName.Split('.');
if (parts.Count() == 2)
{
// System.Foo
if (!dict.TryGetValue(parts[0], out names))
{
names = new List <string>();
dict.Add(parts[0], names);
}
names.Add(parts[1]);
}
else if (parts.Count() == 3)
{
// System.Bar.Baz
if (!dict.TryGetValue(parts[1], out names))
{
names = new List <string>();
dict.Add(parts[1], names);
}
names.Add(parts[2]);
}
// If we ever need it:
// ShellPropertyDescription desc = new ShellPropertyDescription(propertyDescription);
if (propertyDescription != null)
{
Marshal.ReleaseComObject(propertyDescription);
propertyDescription = null;
}
}
// build tree
foreach (string cat in dict.Keys)
{
TreeItem main = new TreeItem(cat, PropType.Group);
foreach (string name in dict[cat])
{
main.AddChild(new TreeItem(name, PropType.Normal));
}
if (cat == "System")
{
AllProperties.Insert(0, main);
}
else if (cat == "PropGroup")
{
foreach (TreeItem ti in main.Children)
{
GroupProperties.Add(ti.Name);
}
}
else
{
AllProperties.Add(main);
}
}
}
}
finally
{
if (propertyDescriptionList != null)
{
Marshal.ReleaseComObject(propertyDescriptionList);
}
if (propertyDescription != null)
{
Marshal.ReleaseComObject(propertyDescription);
}
}
}
public void PopulateSystemProperties()
{
List <SystemProperty> systemProperties = new List <SystemProperty>();
IPropertyDescriptionList propertyDescriptionList = null;
IPropertyDescription propertyDescription = null;
Guid guid = new Guid(ShellIIDGuid.IPropertyDescriptionList);
try
{
int hr = PropertySystemNativeMethods.PSEnumeratePropertyDescriptions(PropertySystemNativeMethods.PropDescEnumFilter.PDEF_ALL, ref guid, out propertyDescriptionList);
if (hr >= 0)
{
uint count;
propertyDescriptionList.GetCount(out count);
guid = new Guid(ShellIIDGuid.IPropertyDescription);
for (uint i = 0; i < count; i++)
{
propertyDescriptionList.GetAt(i, ref guid, out propertyDescription);
string propName;
propertyDescription.GetCanonicalName(out propName);
IntPtr displayNamePtr;
string displayName = null;
propertyDescription.GetDisplayName(out displayNamePtr);
if (displayNamePtr != IntPtr.Zero)
{
displayName = Marshal.PtrToStringAuto(displayNamePtr);
}
SystemProperty sp = new SystemProperty {
FullName = propName, DisplayName = displayName
};
systemProperties.Add(sp);
// If we ever need it:
// ShellPropertyDescription desc = new ShellPropertyDescription(propertyDescription);
if (propertyDescription != null)
{
Marshal.ReleaseComObject(propertyDescription);
propertyDescription = null;
}
}
Dictionary <string, TreeItem> dict = new Dictionary <string, TreeItem>();
List <TreeItem> roots = new List <TreeItem>();
// Build tree based on property names
foreach (SystemProperty sp in systemProperties)
{
AddTreeItem(dict, roots, sp);
}
// Wire trees to tree controls, tweaking the structure as we go
TreeItem propGroup = null;
foreach (TreeItem root in roots)
{
if (root.Name == "System")
{
AllProperties.Insert(0, root);
// Move property groups from root to their own list
propGroup = root.Children.Where(x => x.Name == "PropGroup").FirstOrDefault();
if (propGroup != null)
{
foreach (TreeItem ti in propGroup.Children)
{
GroupProperties.Add(ti.Name);
}
root.RemoveChild(propGroup);
}
// Make remaining children of System that are parents into roots
List <TreeItem> movers = new List <TreeItem>(root.Children.Where(x => x.Children.Count() > 0));
foreach (TreeItem ti in movers)
{
root.RemoveChild(ti);
AllProperties.Add(ti);
}
}
else
{
AllProperties.Add(root);
}
}
}
}
finally
{
if (propertyDescriptionList != null)
{
Marshal.ReleaseComObject(propertyDescriptionList);
}
if (propertyDescription != null)
{
Marshal.ReleaseComObject(propertyDescription);
}
}
}