/// <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>
/// <returns>The formatted value as a string, or null if this property
/// cannot be formatted for display.</returns>
public string FormatForDisplay(PropertyDescriptionFormatOptions format)
{
string formattedString;
if (Description == null || Description.NativePropertyDescription == null)
{
// We cannot do anything without a property description
return(null);
}
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))
{
throw new ShellException(hr);
}
return(formattedString);
}
}
/// <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);
}
var store = ShellPropertyCollection.CreateDefaultPropertyStore(ParentShellObject);
using (var propVar = new PropVariant())
{
store.GetValue(ref propertyKey, propVar);
// Release the Propertystore
Marshal.ReleaseComObject(store);
store = null;
var 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 static string GetAttributeValue(this FileObject fileObject, PropertyKey propertyKey, PropertyDescriptionFormatOptions propertyFormat, ref string strError)
{
return("");
//return FileFunctions.GetFileAttributeValue(fileObject.FilePath, propertyKey, propertyFormat, ref strError);
}
