如何使用存储过程从数据库显示字节类型的图像？

Question

在我尝试过的内容下面，但该图像未显示在替代文本上。它未显示存储在数据库中的字节类型的图像

 using System;
 using System.Xml.Serialization;
 using System.Collections.Generic;

namespace tf.PriceService.Core.Models.Betway
{

[XmlRoot(ElementName = "Keyword")]
public class Keyword
{
    [XmlAttribute(AttributeName = "type_cname")]
    public string Type_cname { get; set; }
    [XmlAttribute(AttributeName = "cname")]
    public string Cname { get; set; }
    [XmlText]
    public string Text { get; set; }
}

[XmlRoot(ElementName = "Keywords")]
public class Keywords
{
    [XmlElement(ElementName = "Keyword")]
    public List<Keyword> Keyword { get; set; }
}

[XmlRoot(ElementName = "Outcome")]
public class Outcome
{
    [XmlElement(ElementName = "Name")]
    public string Name { get; set; }
    [XmlElement(ElementName = "Quicklink")]
    public string Quicklink { get; set; }
    [XmlAttribute(AttributeName = "id")]
    public string Id { get; set; }
    [XmlAttribute(AttributeName = "index")]
    public string Index { get; set; }
    [XmlAttribute(AttributeName = "type_cname")]
    public string Type_cname { get; set; }
    [XmlAttribute(AttributeName = "cname")]
    public string Cname { get; set; }
    [XmlAttribute(AttributeName = "starting_price")]
    public string Starting_price { get; set; }
    [XmlAttribute(AttributeName = "price_num")]
    public string Price_num { get; set; }
    [XmlAttribute(AttributeName = "price_den")]
    public string Price_den { get; set; }
    [XmlAttribute(AttributeName = "price_dec")]
    public string Price_dec { get; set; }
}

[XmlRoot(ElementName = "Market")]
public class Market
{
    [XmlElement(ElementName = "Name")]
    public string Name { get; set; }
    [XmlElement(ElementName = "Outcome")]
    public List<Outcome> Outcome { get; set; }
    [XmlAttribute(AttributeName = "id")]
    public string Id { get; set; }
    [XmlAttribute(AttributeName = "index")]
    public string Index { get; set; }
    [XmlAttribute(AttributeName = "type_cname")]
    public string Type_cname { get; set; }
    [XmlAttribute(AttributeName = "cname")]
    public string Cname { get; set; }
    [XmlAttribute(AttributeName = "handicap")]
    public string Handicap { get; set; }
    [XmlAttribute(AttributeName = "situation_index")]
    public string Situation_index { get; set; }
    [XmlAttribute(AttributeName = "each_way_active")]
    public string Each_way_active { get; set; }
    [XmlAttribute(AttributeName = "each_way_fraction_den")]
    public string Each_way_fraction_den { get; set; }
    [XmlAttribute(AttributeName = "each_way_position")]
    public string Each_way_position { get; set; }
    [XmlAttribute(AttributeName = "tricast")]
    public string Tricast { get; set; }
    [XmlAttribute(AttributeName = "forecast")]
    public string Forecast { get; set; }
    [XmlAttribute(AttributeName = "interval_from")]
    public string Interval_from { get; set; }
    [XmlAttribute(AttributeName = "interval_to")]
    public string Interval_to { get; set; }
}

[XmlRoot(ElementName = "Event")]
public class Event
{
    [XmlElement(ElementName = "Name")]
    public string Name { get; set; }
    [XmlElement(ElementName = "Quicklink")]
    public string Quicklink { get; set; }
    [XmlElement(ElementName = "Keywords")]
    public Keywords Keywords { get; set; }
    [XmlElement(ElementName = "Market")]
    public List<Market> Market { get; set; }
    [XmlAttribute(AttributeName = "id")]
    public string Id { get; set; }
    [XmlAttribute(AttributeName = "cname")]
    public string Cname { get; set; }
    [XmlAttribute(AttributeName = "start_at")]
    public string Start_at { get; set; }
    [XmlAttribute(AttributeName = "home_team_cname")]
    public string Home_team_cname { get; set; }
    [XmlAttribute(AttributeName = "away_team_cname")]
    public string Away_team_cname { get; set; }
    [XmlAttribute(AttributeName = "started")]
    public string Started { get; set; }
}

[XmlRoot(ElementName = "EventList")]
public class EventList
{
    [XmlElement(ElementName = "Event")]
    public List<Event> Event { get; set; }
}

}

**查看代码**

   public ActionResult viewimage()
    {

                List<image> tlist = new List<image>();

        using (SqlConnection con = new SqlConnection(connectionString))
        {
            using (SqlCommand cmd = new SqlCommand("getImage", con))
            {

                cmd.CommandType = CommandType.StoredProcedure;
                con.Open();
                SqlDataReader reader = cmd.ExecuteReader();

                while (reader.Read())
                {
                    var imga = new image();
                    {
                        imga.images = (byte[])reader["img"];
                        ViewBag.Base64String = "data:image/png;base64," + Convert.ToBase64String(imga.images, 0, imga.images.Length);
                    }
                    tlist.Add(imga);

                }
            }
        }

     ViewBag.s = tlist;
        return View();
    }