ProjectItemsSchema.xaml

<?xml version="1.0" encoding="utf-8"?>
<!--Copyright, Microsoft Corporation, All rights reserved.-->
<ProjectSchemaDefinitions
    xmlns="http://schemas.microsoft.com/build/2009/properties">

  <ContentType
    Name="Text"
    DisplayName="Text file"
    ItemType="Content">
  </ContentType>

  <ContentType
    Name="XML"
    DisplayName="Xml file"
    ItemType="Content">
  </ContentType>

  <ContentType
    Name="HTML"
    DisplayName="Html file"
    ItemType="Content">
  </ContentType>

  <ContentType
    Name="CSS"
    DisplayName="Cascading style sheet"
    ItemType="Content">
  </ContentType>

  <ContentType
    Name="Json"
    DisplayName="Json file"
    ItemType="Content">
  </ContentType>

  <ContentType
    Name="Font"
    DisplayName="Font file"
    ItemType="Content">
  </ContentType>

  <ContentType
    Name="Media"
    DisplayName="Media file"
    ItemType="Content">
  </ContentType>

  <ContentType
    Name="Image"
    DisplayName="Image file"
    ItemType="Content">
  </ContentType>

  <ContentType
    Name="EmbeddedResource"
    DisplayName="Embedded resource"
    ItemType="EmbeddedResource">
  </ContentType>

  <ContentType
    Name="Page"
    DisplayName="Page file"
    ItemType="Page">
    <NameValuePair Name="DefaultMetadata_Generator" Value="MSBuild:Compile" />
  </ContentType>

  <ContentType
    Name="Manifest"
    DisplayName="Manifest file"
    ItemType="None">
    <NameValuePair Name="SuppressNumericSuffix" Value="true" />
  </ContentType>

  <ContentType
    Name="Config"
    DisplayName="Config file"
    ItemType="None">
    <NameValuePair Name="SuppressNumericSuffix" Value="true" />
  </ContentType>

  <ContentType
    Name="WindowsResource"
    DisplayName="Windows Resource file"
    ItemType="None">
    <NameValuePair Name="SuppressNumericSuffix" Value="true" />
  </ContentType>

  <ContentType
    Name="PackageLayout"
    DisplayName="Package Layout file"
    ItemType="None">
    <NameValuePair Name="SuppressNumericSuffix" Value="true" />
  </ContentType>

  <ContentType
    Name="AppInstaller"
    DisplayName="App Installer file"
    ItemType="None">
    <NameValuePair Name="SuppressNumericSuffix" Value="true" />
  </ContentType>

  <ContentType 
    Name="XamlAppDef"
    DisplayName="Workflow definition"
    ItemType="XamlAppDef" />

  <ContentType 
    Name="Resource"
    DisplayName="Resource"
    ItemType="Resource" />

  <ItemType Name="None" DisplayName="None" UpToDateCheckInput="False" />
  <ItemType Name="Content" DisplayName="Content" UpToDateCheckInput="False" />
  <ItemType Name="EmbeddedResource" DisplayName="Embedded resource" />
  <ItemType Name="Page" DisplayName="Page" />
  <ItemType Name="ApplicationDefinition" DisplayName="Application definition" />
  <ItemType Name="XamlAppDef" DisplayName="Workflow definition" />
  <ItemType Name="Resource" DisplayName="Resource" />

  <FileExtension Name=".asax" ContentType="Asax" />
  <FileExtension Name=".asmx" ContentType="HTML" />
  <FileExtension Name=".asp" ContentType="AspPage" />
  <FileExtension Name=".txt" ContentType="Text" />
  <FileExtension Name=".resx" ContentType="EmbeddedResource" />
  <FileExtension Name=".licx" ContentType="EmbeddedResource" />
  <FileExtension Name=".html" ContentType="HTML" />
  <FileExtension Name=".htm" ContentType="HTML" />
  <FileExtension Name=".css" ContentType="CSS" />
  <FileExtension Name=".cur" ContentType="CUR" />
  <FileExtension Name=".vbS" ContentType="Script" />
  <FileExtension Name=".jS" ContentType="Script" />
  <FileExtension Name=".xml" ContentType="XML" />
  <FileExtension Name=".mht" ContentType="MHT" />
  <FileExtension Name=".manifest" ContentType="Manifest" />
  <FileExtension Name=".config" ContentType="Config" />
  <FileExtension Name=".resw;.resjson" ContentType="WindowsResource" />
  <FileExtension Name=".packagelayout" ContentType="PackageLayout" />
  <FileExtension Name=".appinstaller" ContentType="AppInstaller" />
  <FileExtension Name=".rdlc" ContentType="RDLC" />
  <FileExtension Name=".cd" ContentType="ClassDiagram" />
  <FileExtension Name=".licenses" ContentType="Licenses" />
  <FileExtension Name=".json" ContentType="Json" />
  <FileExtension Name=".xaml" ContentType="Page" />

  <!-- Image formats -->
  <FileExtension Name=".jpeg" ContentType="Image" />
  <FileExtension Name=".jpe" ContentType="Image" />
  <FileExtension Name=".jpg" ContentType="Image" />
  <FileExtension Name=".jfif" ContentType="Image" />
  <FileExtension Name=".exif" ContentType="Image" />
  <FileExtension Name=".gif" ContentType="Image" />
  <FileExtension Name=".tiff" ContentType="Image" />
  <FileExtension Name=".tif" ContentType="Image" />
  <FileExtension Name=".png" ContentType="Image" />
  <FileExtension Name=".bmp" ContentType="Image" />
  <FileExtension Name=".dib" ContentType="Image" />
  <FileExtension Name=".rle" ContentType="Image" />
  <FileExtension Name=".ico" ContentType="Image" />
  <FileExtension Name=".wdp" ContentType="Image" />
  <FileExtension Name=".dds" ContentType="Image" />
  <FileExtension Name=".tga" ContentType="Image" />

  <!-- Audio formats-->
  <FileExtension Name=".wav" ContentType="Media" />
  <FileExtension Name=".wma" ContentType="Media" />
  <FileExtension Name=".au" ContentType="Media" />
  <FileExtension Name=".aif" ContentType="Media" />
  <FileExtension Name=".aiff" ContentType="Media" />
  <FileExtension Name=".aifc" ContentType="Media" />
  <FileExtension Name=".mid" ContentType="Media" />
  <FileExtension Name=".midi" ContentType="Media" />
  <FileExtension Name=".mp3" ContentType="Media" />
  <FileExtension Name=".snd" ContentType="Media" />
  <FileExtension Name=".rmi" ContentType="Media" />

  <!-- Video formats-->
  <FileExtension Name=".avi" ContentType="Media" />
  <FileExtension Name=".wmv" ContentType="Media" />
  <FileExtension Name=".mov" ContentType="Media" />
  <FileExtension Name=".qt" ContentType="Media" />
  <FileExtension Name=".mpe" ContentType="Media" />
  <FileExtension Name=".mpeg" ContentType="Media" />
  <FileExtension Name=".mpg" ContentType="Media" />
  <FileExtension Name=".mp2" ContentType="Media" />
  <FileExtension Name=".mp4" ContentType="Media" />
  <FileExtension Name=".asx" ContentType="Media" />
  <FileExtension Name=".asf" ContentType="Media" />
  <FileExtension Name=".webm" ContentType="Media" />

  <!-- Font formats -->
  <FileExtension Name=".ttf" ContentType="Font" />
  <FileExtension Name=".odttf" ContentType="Font" />
  <FileExtension Name=".otf" ContentType="Font" />
  <FileExtension Name=".compositefont" ContentType="Font" />
  <FileExtension Name=".ttc" ContentType="Font" />
  <FileExtension Name=".tte" ContentType="Font" />
  <FileExtension Name=".woff" ContentType="Font" />
  <FileExtension Name=".eot" ContentType="Font" />
</ProjectSchemaDefinitions>