Add UI to an Installer

<? xml version="1.0" encoding="UTF-8" ?>
< Wix  xmlns ="http://schemas.microsoft.com/wix/2006/wi" >
     < Product  Id ="e6ecf2a7-b03c-4b3f-ace8-6179ab62e4c7"  Name ="WixProject"  Language ="1033"  Version ="1.0.0.0"  Manufacturer ="WixProject"  UpgradeCode ="b3d503b8-4f21-4116-8562-6ff1e0e16a28" >
         < Package  InstallerVersion ="200"  Compressed ="yes"   />

         < Media  Id ="1"  Cabinet ="media1.cab"  EmbedCab ="yes"   />

         < Directory  Id ="TARGETDIR"  Name ="SourceDir" >
             < Directory  Id ="ProgramFilesFolder" >
                 < Directory  Id ="INSTALLLOCATION"  Name ="WixProject" >
                     <!--  TODO: Remove the comments around this Component element and the ComponentRef below in order to add resources to this installer.  -->
                      < Component  Id ="ProductComponent"  Guid ="266b1212-45bf-4b65-a31a-29c3bdc43e20" >
              < File  Id ="WindowsFormsApplication"  Source ="$(var.SolutionDir)\WindowsFormsApplication\$(var.OutDir)\WindowsFormsApplication.exe"   />
                      </ Component >  
                 </ Directory >
             </ Directory >
         </ Directory >

         < Feature  Id ="ProductFeature"  Title ="WixProject"  Level ="1" >
             <!--  TODO: Remove the comments around this ComponentRef element and the Component above in order to add resources to this installer.  -->
              < ComponentRef  Id ="ProductComponent"   />  
         </ Feature >

     < UIRef  Id ="WixUI_Mondo" />
    
     </ Product >
</ Wix >