public async Task <ActionResult> Index(string id)
{
if (string.IsNullOrEmpty(id))
{
return(View());
}
OrleansHelper.EnsureOrleansClientInitialized();
Guid classGuid = new Guid(id);
ICollegeClass grain = GrainFactory.GetGrain <ICollegeClass>(classGuid);
ClassInfo classInfo = await grain.GetClassInfo();
IList <IStudent> students = await grain.GetStudents();
string[] studentNames = new string[0];
if (students != null && students.Count > 0)
{
var studentNameTasks = new Task <string> [students.Count];
for (int i = 0; i < students.Count; i++)
{
studentNameTasks[i] = students[i].GetFullName();
}
studentNames = await Task.WhenAll(studentNameTasks);
}
ITeacher teacherGrain = GrainFactory.GetGrain <ITeacher>(classInfo.Teacher);
string teacherName = await teacherGrain.GetFullName();
var classView = new ClassViewModel()
{
Id = new Guid(id),
Name = classInfo.Name,
Subject = classInfo.Subject,
Teacher = teacherName,
ClassSize = studentNames.Length,
Students = studentNames
};
return(View(classView));
}