Question

我收到以下错误：

System.Web.dll中出现'System.Web.HttpException'类型的第一次机会异常

附加信息：超出最大请求长度。

当我尝试上传250个大小为98.kb的jpeg时，总共大约31 mb。现在我知道fileuploader默认情况下不允许超过4mb的文件这是否意味着每个文件必须小于4mb，或者每个上传尝试的总大小必须小于4mb？

我搜索了一个解决方案并在我的网络配置中尝试了以下内容

<security>
  <requestFiltering>
    <requestLimits maxAllowedContentLength="524288000" />
  </requestFiltering>
</security>

但我仍然有同样的错误！??

这是我的代码：

public partial class ReUpload : System.Web.UI.Page
{
    HttpFileCollection uploads = HttpContext.Current.Request.Files;

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Session.Remove("paths");
            ListBox1.Items.Clear();
            Session.Add("paths",uploads);

        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {


        if (FileUpload1.HasFile)
        {

            try
            {
                // Get the HttpFileCollection
                HttpFileCollection hfc = Request.Files;
                for (int i = 0; i < hfc.Count; i++)
                {
                    HttpPostedFile hpf = hfc[i];
                    if (hpf.ContentLength > 0)
                    {
                        string fn = System.IO.Path.GetFileName(hpf.FileName);
                        string SaveLocation = Server.MapPath("Uploaded") + "\\" + fn;
                        ListBox1.Items.Add(fn + " succsessfully uploaded");
                        hpf.SaveAs(SaveLocation);
                    }
                }


            }
            catch (Exception ex)
            {
                // Handle your exception here
                Response.Write("Error: " + ex.Message);
            }

        }  
                    else if(ListBox1.Items.Count != 0)
             {
                 ListBox1.Items.Clear();
                 HttpFileCollection hfc = (HttpFileCollection)Session["paths"];

                for (int i = 0; i < hfc.Count; i++)
                {
                    HttpPostedFile hpf = hfc[i];
                    if (hpf.ContentLength > 0)
                    {
                        string fn = System.IO.Path.GetFileName(hpf.FileName);
                        string SaveLocation = Server.MapPath("Uploaded") + "\\" + fn;
                        ListBox1.Items.Add(fn + " succsessfully uploaded");
                        hpf.SaveAs(SaveLocation);
                    }
                 }

             }
                    else
             {

                 Response.Write("Please select a file to upload.");
             }


    }

    protected void Button2_Click(object sender, EventArgs e)
    {
        ListBox1.Items.Clear();

        if (FileUpload1.HasFile)
        {
            try
            {

                // Get the HttpFileCollection
                HttpFileCollection hfc = Request.Files;

                Session["paths"] = hfc;
                for (int i = 0; i < hfc.Count; i++)
                {
                    HttpPostedFile hpf = hfc[i];
                    if (hpf.ContentLength > 0)
                    {
                        ListBox1.Items.Add(hpf.FileName);
                    }
                }
                //ViewState["count"] = ListBox1.Items.Count;
            }
            catch (Exception ex)
            {
                // Handle your exception here
                Response.Write("Error: " + ex.Message);
            }

        }
        else
        {

            Response.Write("Please select a file to upload.");
        }
    }

 }

}

Answer 1

此设置包含在您的web.config文件中。它会影响整个应用程序，但是...我不认为你可以在每页设置它。文件上传器在时间上只接受一个文件。对于asynchronous file upload use Ajax control

<configuration>
  <system.web>
    <httpRuntime maxRequestLength="xxx" />
  </system.web>
</configuration>

“xxx”以KB为单位。默认值为4096（= 4 MB）。

启用多选时，FileUploader接受多少个文件？

1 个答案: