Question

Can anyone show me how to loop through my table in my view?
The rows I have are: disease_id, disease, and remedy.

My DB Query

I tried to get all the results into a list, so i can loop through them in the view.

        SqlCommand cmd = new SqlCommand("SELECT * FROM disease", m_DBCon);
        m_Reader = cmd.ExecuteReader();

        List<string> record = new List<string>();
        while (m_Reader.Read())
        {
            string s = Convert.ToString(m_Reader[0]);
            record.Add(s);
        }

        ViewBag.Record = record;

My View

I want to loop the database records in a table

@{
    ViewBag.Title = "Dashboard";
    List<string> record = ViewBag.Record;
}

I keep getting an empty string. I thought I would have to do something like s[“disease”], s[“remedy”}, but s is a string so it doesn’t have all those fields.

    @{
        foreach (string s in record)
        {
            <tr>
              <td>@s</td>
            </tr>
        }
    }

Can anyone please give me some advice 🙂

Answer 1

I’d first want to point out that it’s probably easier to create a DiseaseResult class first.
Such that :

public class DiseaseResult
{
  public int DiseaseId { get; set; }
  public string Disease { get; set; }
  public string Remedy { get; set; }
}

that makes things a little bit easier. Now you can say:

public ActionResult Index()
{
    SqlCommand cmd = new SqlCommand("SELECT [disease_id], [disease], [remedy] FROM disease", m_DBCon);
    m_Reader = cmd.ExecuteReader();

    List<DiseaseResult> record = new List<DiseaseResult>();
    while (m_Reader.Read())
    {
        record.Add(new DiseaseResult() { DiseaseId = m_Reader[0], Disease = m_Reader[1], Remedy = m_Reader[2]);
    }

    return View(record);
}

Afterward in your View:

@model List<DiseaseResult>

@foreach(DiseaseResult item in Model)
{
   <div>@item.Disease</div>
}