如何使用asp.net将对象从控制器传递到视图（电动机aspx不是剃须刀）

Question

I need to pass an object from my controller to my view, I have the next code

public ActionResult General(int id)
    {
        List<Topics> topics = new List<Topics>();
        Topics top = new Topics();
        List<string> items = new List<string>();
        topics = top.getAllTopics(id);
        for (int i = 0; i < topics.Count; i++)
        {

            items.Add(topics[i].name);

        }
        ViewBag.Items = items; 
        return View(topics.Count);
    }

and I need use the value of topics.Count in my view and putting it in a for.

Answer 1

• Create a class with Topics as name, and set public properties in the Topics class.
• Create a strong type view with Topics as your model, within this view, you can display or edit your properties set in Topics class.
• When you return a view back just return the model, in this case it will be return view (Topics).

Answer 2

Try modifying your code to this

public ActionResult General(int id)
    {
        List<Topics> topics = new List<Topics>();
        Topics top = new Topics();
        List<string> items = new List<string>();
        topics = top.getAllTopics(id);
        for (int i = 0; i < topics.Count; i++)
        {

            items.Add(topics[i].name);

        }
        ViewBag.Items = items;
        ViewBag.Counter = topics.Count; // this line was added
        return View(topics.Count);
    }

And in your View add this if your are using Razor syntax

@for(var i=0;i<ViewBar.Counter;i++){
  //Do your logic here

}