how to debug xslt in umbraco

Question

I want to debug a xslt used in umbraco (4.0) user control. The xslt is using static .net methods from an assembly say MyAssembly. The xslExtensions.config has been setup with the following entry <ext assembly="/bin/MyAssembly" type="MyAssembly.Utility" alias="MyAssembly.Utility" />

This is referenced and used in the xslt file like

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:MyAssembly.Utility="urn:MyAssembly.Utility"....
-------------------------------------------------->

--------------------------------------------------
<xsl:variable name="Id" select="MyAssembly.Utility:GetQueryStringValue('tlid')"></xsl:variable>

The assembly is copied in the bin folder of the application

The xslt file is quite big and extensively using .net methods. I'm just wondering how can I debug the XSLT by adding breakpoints at various lines. If I run the application just like any .net application and put break points then these breakpoints don't get a hit. If I use the XSLT debug options from the Visual studio menu i.e. Start XSLT Debugging then the debugging starts but I get the error on this line <xsl:variable name="Id" select="MyAssembly.Utility:GetQueryStringValue('tlid')"></xsl:variable>

the error is "Cannot find a script or an extension object associated with namespace 'urn:MyAssembly.Utility'."

Any ideas how can we debug the xslt as explained in this MS visual studio walk-through https://msdn.microsoft.com/en-us/library/ms255602.aspx using .net methods?

Jabberwocky Jabberwocky · Accepted Answer · 2016-10-06T09:35:57

I have never used XSLT so i'm probably not going to help with what I'm going to say, but since I've been doing this since day 1 why don't you use break points in Visual Studio to see what your code does? That's the only way I've needed so far in debugging my code.

how to debug xslt in umbraco

1 Answers