Question

I have this code:

 namespace Zinc.Web.Extensions.DataModel.Training
 {
   public static class TrainingModuleProgressStateDataModelExtentions
   { 
      public static string GetHintText(String aString)
      {

         //must still make up astring here
         return aString;
       }
   }
 }

 namespace Zinc.DataModels.Training
 {
    public class TrainingModuleProgressStateDataModel
    {
      public IEnumerable<UserTrainingPointsDataModel> UserTrainingPoints { get; set; }
    }
  }

  public class UserTrainingPointsDataModel
  {
    public virtual int InteractionType { get; set; }
    public virtual int Points { get; set; }
    public virtual string Name { get; set; }
    public virtual string IncentiveTrainingModuleOptionName { get; set; }
  }

in my repository i add to UserTrainingPoints:

 string RawPoints = row["RawPoints"].ToString();
 string[] rawPoints = RawPoints.Split(new char[] { '|' });
 List<UserTrainingPointsDataModel> points = new List<UserTrainingPointsDataModel>();

 foreach (var RawPoint in rawPoints)
 {
   string[] entry = RawPoint.Split(new char[] { ',' });
   var point = new UserTrainingPointsDataModel();
   point.Name = entry[0];
   point.Points = Convert.ToInt32(entry[1]);
   point.InteractionType = Convert.ToInt32(entry[2]);
   point.IncentiveTrainingModuleOptionName = entry[3];
   points.Add(point);  

 }
 trainingModuleProgressState.UserTrainingPoints = points;
 data.Add(trainingModuleProgressState);

in my view i need to call the extension method which will take values in UserTrainingPoints to make up a string which i will then show in a tooltip.

my question is how do i implement the extension method so i can call it in my view?

my view code:

 <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Zinc.Models.Training.TrainingModuleProgressStateDataModelResults>" %>
 <%@ Import namespace="Zinc.Web.Extensions.DataModel.Training" %> //added this

  <% if (module.HasAssessment)
  { %>
     <div class="<%: moduleStateClass %>">&nbsp;</div>
     <div class="<%: moduleScoreClass %>"><%: module.ModuleScore %>%</div>
     <% Zinc.Web.Extensions.DataModel.Training.TrainingModuleProgressStateDataModelExtentions.GetHintText(module.UserTrainingPoints); %>  //still not correct here

Answer 1

Since UserTrainingPoints is a IEnumerable<UserTrainingPointsDataModel> I would think your extension method signature should be

public static string GetHintText(this IEnumerable<UserTrainingPointsDataModel> points)
{
    string aString;
    //must still make up astring here
    return aString;
}

Then you can call it like this

module.UserTrainingPoints.GetHintText();