Question

I’m trying to write a T4 template to iterate over a project folder (specified) and generate a js file based on those properties.

I’m able to return my first class file as a ProjectItem (returns as a System.__ComObject)

i see name is returning correctly (“MyReadModel.cs”)

Public Class MyReadModel{
  Public string MyName { get; set; }
  public int MyAge { get; set;}
}

now I’m struggling to return the properties out of it.
the file has a FileCodeModel as System.__ComObject.
i can’t find any properties.

i tried doing the following:

projectItem.GetType().GetProperties()

but returns System.Reflection.PropertyInfo[0]

any tips on where I’m going wrong? it appears its being cast as a com object… maybe this is wrong?

EDIT:

references:

http://www.olegsych.com/2008/07/t4-template-for-generating-sql-view-from-csharp-enumeration/

How to get T4 in VS2010 to iterate over class' properties

Code:

<# Prepare(this); #>
<# foreach(ProjectItem pi in FindProjectItemsIn(CurrentProject.ProjectItems.Item("Commands"))) { #>
    <# WriteLine("found " + pi); #>
<# } #>

<#+    
static DTE Dte;
static Dictionary<string, ResultTypeInfo> ResultTypes;
static TextTransformation TT;
static Microsoft.CSharp.CSharpCodeProvider codeProvider = new Microsoft.CSharp.CSharpCodeProvider();

static Project CurrentProject;

IList<ProjectItem> FindProjectItemsIn(ProjectItem start) {
var list = new List<ProjectItem>();
FindProjectItemsIn(start, list);
return list;
}

static bool IsFolder1(ProjectItem item) {
    return (item.Kind == Constants.vsProjectItemKindPhysicalFolder);
}

void FindProjectItemsIn(ProjectItem start, IList<ProjectItem> list) {
foreach(ProjectItem item in start.ProjectItems) {
if(IsFolder1(item)) {
FindProjectItemsIn(item, list);
continue;
}
list.Add(item);
}
}


void Prepare(TextTransformation tt) {
TT = tt;
    // Get the DTE service from the host
    var serviceProvider = Host as IServiceProvider;
    if (serviceProvider != null) {
        Dte = serviceProvider.GetService(typeof(SDTE)) as DTE;
    }

var projectItem = Dte.Solution.FindProjectItem(Host.TemplateFile);
CurrentProject = projectItem.ContainingProject;
}

Answer 1

In order to get the list of properties in the classes/structs contained in a given source file you can do the following (you could easily get the class name etc. by using CodeClass):

private IList<CodeProperty> GetProperties(string csFile)
{
  ProjectItem projectItem = TransformationContext.FindProjectItem(csFile);
  FileCodeModel codeModel = projectItem.FileCodeModel;
  var propertyList = new List<CodeProperty>();
  FindProperties(codeModel.CodeElements, propertyList);
  return propertyList;
}

private void FindProperties(CodeElements elements, IList<CodeProperty> properties)
{
  foreach (CodeElement element in elements)
  {
    CodeProperty property = element as CodeProperty;
    if (property != null)
    {
      properties.Add(property);
    } 
    FindProperties(element.Children, properties);
  }
}