From MSI to WiX, Part 25 - Installable Items - Updating XML files using XmlFilehttp://blogs.technet.com/alexshev/archive/2009/05/27/from-msi-to-wix-part-25-installable-items-updating-xml-files-using-xmlfile.aspxTo use XmlFile element we need to: Add reference to WixUtilExtension extension. Add util namespace to &lt;Wix&gt; element: &lt;? xml version = " 1.0 " encoding = " UTF-8 " ?&gt; &lt; Wix xmlns = " http://schemas.microsoft.com/wix/2006/wi " xmlns:utilru-RUCommunityServer 2.1 SP1 (Build: 61025.2)re: From MSI to WiX, Part 25 - Installable Items - Updating XML files using XmlFilehttp://blogs.technet.com/alexshev/archive/2009/05/27/from-msi-to-wix-part-25-installable-items-updating-xml-files-using-xmlfile.aspx#3251836Mon, 08 Jun 2009 13:54:50 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3251836amx3000<P>&gt; Here is what we can do with existing XML file using XmlFile element:</P> <P>&gt;</P> <P>&gt; &nbsp; &nbsp;* Set the value of an attribute</P> <P>&gt; &nbsp; &nbsp;* Set the text value of an element</P> <P>&gt; &nbsp; &nbsp;* Create new element</P> <P>&gt; &nbsp; &nbsp;* Create new attribute</P> <P>&gt; &nbsp; &nbsp;* Delete the text value of an element</P> <P>&gt; &nbsp; &nbsp;* Delete the attribute</P> <P>And how can I *read* a text value from element?</P>re: From MSI to WiX, Part 25 - Installable Items - Updating XML files using XmlFilehttp://blogs.technet.com/alexshev/archive/2009/05/27/from-msi-to-wix-part-25-installable-items-updating-xml-files-using-xmlfile.aspx#3294064Mon, 16 Nov 2009 12:35:06 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3294064kemal dincer<P>how to got custom config data from UserInterface dialog?</P>