Changing the Language or Condition of a Resource While Copying
While copying in a resource, you can change its language property or condition property, or both.
The language of the resource identifies just that, the language for the resource. This is used by FindResource to help identify the resource for which you're looking. (However, resources can have differences for each language that aren't related to text, for example, accelerators that might only work on a Japanese keyboard or a bitmap that would only be appropriate for Chinese localized builds, etc.)
The condition of a resource is a defined symbol that identifies a condition under which this particular copy of the resource is to be used.
The language and condition of a resource are shown in parentheses after the name of the resource in the Workspace window. In this example the resource named IDD_AboutBox is using Finnish as its language and its condition is XX33.
IDD_AboutBox (Finnish – XX33)
To copy an existing resource and change its language or condition
In the .rc file or in the Resource View window, right-click the resource you want to copy.
Choose Insert Copy from the shortcut menu.
In the Insert Resource Copy dialog box:
For the Language list box, select the language.
In the Condition box, type the condition.
For information on adding resources to managed projects, please see Resources in Applications in the .NET Framework Developer's Guide. For information on manually adding resource files to managed projects, accessing resources, displaying static resources, and assigning resources strings to properties, see Walkthrough: Localizing Windows Forms and Walkthrough: Using Resources for Localization with ASP.NET.