.aspx page Response.BinaryWrite IE7上的图像

我维护一个应用程序,它有一个.aspx页面,从数据库加载图像,并使用Response.BinaryWrite()将其写回客户端。不久前,这种方法还很有效。两件事发生了变化,我们将应用程序升级到.NET3.5,他们将所有工作中的计算机升级到IE7。

Firefox上的一切都很好,但我在IE7中得到的只是一个红色的X。所以我认为这个问题与IE7有关?是否有安全设置阻止它从.aspx表单加载图像?它已设置为基于内容类型而不是扩展名显示。

<asp:image id="imgContent" runat="server" Visible="true" ImageUrl="ProductContentFormImage.aspx"></asp:image>

    protected void Page_Load(object sender, System.EventArgs e)
    {
        Hashtable hshContentBinary = (Hashtable)Session["hshContentBinary"];
        byte[] content = (byte[]) hshContentBinary["content"];
        string extension = (string) hshContentBinary["extension"];


        string contentTypePrefix = "application";
        switch(extension.ToLower())
        {
            case "gif":
            case "jpg":
            case "bmp":
                contentTypePrefix = "image";
                break;
            case "tif":
                contentTypePrefix = "image";
                break;
            case "tiff":
                contentTypePrefix = "image";
                break;
            case "eps":
                contentTypePrefix = "image";
                break;
            default:
                Response.AppendHeader( 
                    "Content-disposition",
                    "attachment; filename=content." + extension );
                break;
        }
        Response.ContentType = contentTypePrefix + "/" + extension;
        Response.BinaryWrite(content);
    }

编辑:

好的,我遵循了你的建议,通过更多的研究,我将方法改为以下,但仍然不起作用。

protected void Page_Load(object sender, System.EventArgs e)
{
    Hashtable hshContentBinary = (Hashtable)Session["hshContentBinary"];
    byte[] content = (byte[]) hshContentBinary["content"];
    string extension = (string) hshContentBinary["extension"];
    string contentType;
    string contentDisposition = "inline; filename=content." + extension;

    Response.ClearContent();
    Response.ClearHeaders();
    Response.Clear();

    switch(extension.ToLower())
    {
        case "gif":
            contentType = "image/gif";
            break;
        case "jpg":
        case "jpe":
        case "jpeg":
            contentType = "image/jpeg";
            break;
        case "bmp":
            contentType = "image/bmp";
            break;
        case "tif":
        case "tiff":
            contentType = "image/tiff";
            break;
        case "eps":
            contentType = "application/postscript";
            break;
        default:
            contentDisposition = "attachment; filename=content." + extension;
            contentType = "application/" + extension.ToLower();
            break;
    }

    Response.Buffer = true;
    Response.Expires = 0;
    Response.ContentType = contentType;
    Response.AddHeader("Content-Length", content.Length.ToString());
    Response.AddHeader("Content-disposition", contentDisposition);
    Response.Cache.SetCacheability(HttpCacheability.NoCache);
    Response.BinaryWrite(content);
    Response.End();
}