<Image Source="pack://application:,,,/Images/Folder-icon.png"/> <Image Source="pack://application:,,,/Assembly;component/Images/Folder-icon.png"/> <Im ...
<Image Source="pack://application:,,,/Images/Folder-icon.png"/>
<Image Source="pack://application:,,,/Assembly;component/Images/Folder-icon.png"/>
<Image Source="pack://application:,,,/ClassLibrary1;component/Folder-icon.png"/>