VBv3.5 include directive throw's error when calling ProcessTemplate method.

Question

I am attempting to generate some code via T4 and I am receiving the following error when I include the <#@ template language="VBv3.5"#> directive in my template.

vbc : Command line (0,0) : error BC2006: Compinling transformation: option 'r' requires ':(file_list)

If I use <#@ template language="C#v3.5"#> as my directive it works just fine. Also if I do not attempt to generate via code and just save the .tt file it works just fine with the VBv3.5 directive.

Here is my t4 template.

<#@ output extension="txt" #>
<#@ assembly name="Microsoft.SqlServer.ConnectionInfo" #>
<#@ assembly name="Microsoft.SqlServer.Smo" #>
<#@ assembly name="System.Configuration" #>
<#@ assembly name="Microsoft.VisualBasic" #>
hello world

Here is my .NET code

    Dim host As CustomCmdLineHost = New CustomCmdLineHost()
    Dim engine As Engine = New Engine()

    host.TemplateFileValue = sTemplateFile

    'Read the text template.
    Dim input As String = File.ReadAllText(sTemplateFile)

    'Transform the text template.
    Dim output As String = engine.ProcessTemplate(input, host)

Answer 1

This works with the standard T4 hosts (in Visual Studio and TextTransform). Based on the error, it appears that your custom host doesn't provide the list of assembly references correctly.