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使用Url.Action在視圖頁面中未顯示圖像

[英]Image not displaying in view page using Url.Action

我正在嘗試在視圖頁面中顯示圖像,但未在瀏覽器中顯示。 這是我的代碼: MyChat.cshtml

<td>
<img src="@Url.Action("GetImage", "Mailbox", new { name = Session["Loginname"].ToString() })" id="photo"/>
</td>

調節器

public FileContentResult GetImage(string name)
{
   byte[] cover = GetImageFromDataBase(name);
   ViewData["image"] = cover;
     if (cover != null)
     {
         return File(cover, "image/jpeg");
     }
     else
     {
           return null;
     }
 }

public byte[] GetImageFromDataBase(string name)
{
   RegisterLogic logic = new RegisterLogic();
   byte[] image = logic.GetImage(name);
   return image;
}

我用於從SQL Server 2008 R2檢索值的業務邏輯如下:

public byte[] GetImage(string name)
        {
            con.ConnectionString = str;
            cmd.Connection = con;
            if (con.State == ConnectionState.Open)
                con.Close();
            if (con.State == ConnectionState.Closed)
                con.Open();
            cmd.CommandText = "Select Picture from InspiniaMessage where UserName='" + name + "'";
            cmd.CommandType = CommandType.Text;


            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            Message m = new Message();           
            foreach (DataRow dr in dt.Rows)
            {
                Message mn = new Message();
                mn.Picture = (byte[])(dr["Picture"]);
                m.Picture = mn.Picture;             

            }           
            return m.Picture;
            con.Close();
        }
     }

我沒有任何錯誤,但是圖像未顯示在視圖中。

Url.Action生成針對控制器的操作的url,它從不調用該操作,而要調用該操作,則必須使用Html.Action()幫助器。

當你寫:

@Url.Action("ActionName","ControllerName")

它以如下形式返回url作為字符串:

localhost/Controller/Action

要執行操作,請使用Html.Action()

<img src="@Html.Action("GetImage", 
                       "Mailbox", 
                      new 
                        { 
                         name = Session["Loginname"].ToString() 
                        })" 
     id="photo"/>

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