How can I specify T4 (Text Templates) to use C# 4.0, in VS2010?

Question

I need to specify my T4 to use C# 4.0, to render my tt files? I tried using

<#@ template language="C#v4.0" debug="true" #>

But when I use a dynamic variable, like this

dynamic x=10;
Write(x.ToString());

I'm getting these errors

Error   2   Compiling transformation: Predefined type 'Microsoft.CSharp.RuntimeBinder.CSharpSetMemberBinder' is not defined or imported e:\projects\DynamicModel\DynamicModel\ModelGenerator.tt 1   1   
Error   3   Compiling transformation: Missing compiler required member 'Microsoft.CSharp.RuntimeBinder.CSharpInvokeMemberBinder..ctor'  e:\projects\DynamicModel\DynamicModel\ModelGenerator.tt 1   1   
Error   4   Compiling transformation: Missing compiler required member 'System.Runtime.CompilerServices.CallSite.Create'    e:\projects\DynamicModel\DynamicModel\ModelGenerator.tt 1   1   
Error   5   Compiling transformation: One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll?   e:\Projects\DynamicModel\DynamicModel\ModelGenerator.tt 7   8   
Error   6   A namespace cannot directly contain members such as fields or methods   e:\projects\DynamicModel\DynamicModel\ModelGenerator.cs 1   1   DynamicModel

Also, please note that I'm using TextTemplatingFileGenerator and Not pre-processor templates

Have you tried looking at the templates provided with VS2010? — Lazarus, Oct 07 '09 at 11:53
Yep, it goes well as long as you don't use a dynamic variable — amazedsaint, Oct 07 '09 at 12:35

amazedsaint · Answer 1 · 2009-10-24T08:04:35.950

6

Found that you should specify the correct assemblies as well.

Adding this will ensure you are using c# 4.0.

<#@ template language="C#" debug="true" #>
<#@ output extension=".txt" #>
<#@ Assembly Name="System.Core, Version=4.0.0.0, Culture=neutral" #>
<#@ Assembly Name="Microsoft.CSharp, Version=4.0.0.0, Culture=neutral" #>

How ever, for some reason, during the time of t4 transformation, the dynamic dispatching is still not working from T4, wondering why. From T4 it throws a runtime error, the same code does good directly from a cs file.

edited Oct 24 '09 at 08:04

answered Oct 07 '09 at 12:43

amazedsaint

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Have you tried using precompiled T4? http://www.olegsych.com/2009/09/t4-preprocessed-text-templates/ – Pavel Minaev Oct 24 '09 at 08:42
And FYI I'm using a custom template host, not directly running t4 from VS :) – amazedsaint Oct 24 '09 at 12:03

score 2 · Answer 2 · answered Oct 23 '09 at 23:11

2

I believe that by default the T4 engine can only use 4.0, although I'd make sure that any DLLs you reference are correct for your error.

answered Oct 23 '09 at 23:11

Colin Asquith

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How can I specify T4 (Text Templates) to use C# 4.0, in VS2010?

2 Answers2