Template-engine that uses C# scripts to generate .cs files.

Usage

Create a template file: Right-click on a project -> Add -> New item -> Choose a name. Typically C# script files end with ".csx"
Set template properties: Right-click on template file -> Properties -> Build Action: None, Custom Tool: CsxTemplateRunner
Edit template file (see example template file)
Visual Studio triggers a rebuild of the template whenever the template changes. You can trigger a rebuild manually by right-clicking on the template file and selecting "Run Custom Tool"

Example

Template

C#

Edit|Remove

#r "System.Core"using System;using System.Collections.Generic;using System.Linq;var powers = Enumerable.Range(10, 5);$@"// Generation time: {DateTime.Now}namespace {Namespace}{{    public static class QuickMath    {{        {            string.Join            (                Environment.NewLine,                powers.Select(i => $@"public static double TwoToThePowerOf{i} => {Math.Pow(2, i)};")            )        }    }}}}"

#r "System.Core"  using System; using System.Collections.Generic; using System.Linq;  var powers = Enumerable.Range(10, 5);  $@"// Generation time: {DateTime.Now}  namespace {Namespace} {{     public static class QuickMath     {{         {             string.Join             (                 Environment.NewLine,                 powers.Select(i => $@"public static double TwoToThePowerOf{i} => {Math.Pow(2, i)};")             )         }     }} }}"

Result (formatted - to not hurt your eyes)

C#

Edit|Remove

// Generation time: 4/19/2016 6:44:36 AMnamespace MathLib{    public static class QuickMath    {        public static double TwoToThePowerOf10 => 1024;        public static double TwoToThePowerOf11 => 2048;        public static double TwoToThePowerOf12 => 4096;        public static double TwoToThePowerOf13 => 8192;        public static double TwoToThePowerOf14 => 16384;    }}

// Generation time: 4/19/2016 6:44:36 AM  namespace MathLib {     public static class QuickMath     {         public static double TwoToThePowerOf10 => 1024;         public static double TwoToThePowerOf11 => 2048;         public static double TwoToThePowerOf12 => 4096;         public static double TwoToThePowerOf13 => 8192;         public static double TwoToThePowerOf14 => 16384;     } }