/// <summary>
/// Returns a formatted, Unicode string representation of a property value.
/// </summary>
/// <param name="format">
/// One or more of the PropertyDescriptionFormat flags
/// that indicate the desired format.
/// </param>
/// <param name="formattedString">
/// The formatted value as a string, or null if this property
/// cannot be formatted for display.
/// </param>
/// <returns>
/// True if the method successfully locates the formatted string; otherwise
/// False.
/// </returns>
public bool TryFormatForDisplay(PropertyDescriptionFormatOptions format, out string formattedString)
{
if (Description == null || Description.NativePropertyDescription == null)
{
// We cannot do anything without a property description
formattedString = null;
return(false);
}
IPropertyStore store = ShellPropertyCollection.CreateDefaultPropertyStore(ParentShellObject);
using (PropVariant propVar = new PropVariant())
{
store.GetValue(ref propertyKey, propVar);
// Release the Propertystore
Marshal.ReleaseComObject(store);
store = null;
HResult hr = Description.NativePropertyDescription.FormatForDisplay(propVar, ref format,
out formattedString);
// Sometimes, the value cannot be displayed properly, such as for blobs
// or if we get argument exception
if (!CoreErrorHelper.Succeeded(hr))
{
formattedString = null;
return(false);
}
return(true);
}
}
private void GetImageReference()
{
IPropertyStore store = ShellPropertyCollection.CreateDefaultPropertyStore(ParentShellObject);
using (PropVariant propVar = new PropVariant())
{
store.GetValue(ref propertyKey, propVar);
Marshal.ReleaseComObject(store);
store = null;
string refPath;
((IPropertyDescription2)Description.NativePropertyDescription).GetImageReferenceForValue(
propVar, out refPath);
if (refPath == null)
{
return;
}
int index = ShellNativeMethods.PathParseIconLocation(ref refPath);
if (refPath != null)
{
imageReferencePath = refPath;
imageReferenceIconIndex = index;
}
}
}