What is RESX? RESX, short name for Resource XML, is used as the file extension for Resource XML files. .RESX files are XML files that are used to store .NET application resource entries. See the sample .RESX file included below.

File Extension: .RESX

MIME Type: text/xml

File Content: Resource XML

.RESX files are Resource XML files, that are used to store .NET application resource entries. Here is a sample .RESX Resource XML file, Resources.resx:

<?xml version="1.0" encoding="utf-8"?>
<root>
   <xsd:schema id="root" 
      xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
      xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
      ...
   </xsd:schema>
   <resheader name="resmimetype">
      <value>text/microsoft-resx</value>
   </resheader>
   <resheader name="version">
      <value>1.3</value>
   </resheader>
   <resheader name="reader">
      <value>System.Resources.ResXResourceReader, System.Windows.Forms, 
         Version=2.0.3500.0, Culture=neutral, 
         PublicKeyToken=b77a5c561934e089</value>
   </resheader>
   <resheader name="writer">
      <value>System.Resources.ResXResourceWriter, System.Windows.Forms, 
         Version=2.0.3500.0, Culture=neutral, 
         PublicKeyToken=b77a5c561934e089</value>
   </resheader>
</root>

.RESX Resource XML file sample: Click sample.resx to download.

Since .RESX files are in text format, you can use Notepad or any text editor to create or modify them. No special software is needed.

For for information on how to use .RESX Resource XML files, see links below:

• Resources in .Resx File Format, by Microsoft.