The Wix directory (Wix# Dir target path) doesn't allow absolute path. Thus it has to be done by overriding the INSTALLDIR property prior the installation:
However I do see the value in fixing this WiX usability flaw and allowing the direct absolute path. In fact it is exactly in the "Wix# spirit":
Thus I have put it in my pending features list so watch for the future releases.
Project project =
new Project("MyProduct",
new Dir(@"%ProgramFiles%\My Company\My Product",
new File(@"Files\Bin\MyApp.exe"),
new Dir(@"Docs\Manual",
new File(@"Files\Docs\Manual.txt"))),
new SetPropertyAction("INSTALLDIR", @"C:\My Company\My Product"));
project.UI = WUI.WixUI_InstallDir;
project.GUID = new Guid("6f330b47-2577-43ad-9095-1861ba25889b");
Compiler.PreserveTempFiles = true;
Compiler.BuildMsi(project);
...
new Project("MyProduct",
new Dir(@"C:\My Company\My Product",
new File(@"Files\Bin\MyApp.exe"),
...