System.ObjectDisposedException: Cannot access a closed file

[chauncey1984]

本人想批量上传照片，在local的时候，一切功能都正常，上传文件存数据库以及存相片文件夹都正常。
可是当把程序放到server上，上传一张照片就会报错，当上传四张以上，第一张正常，第二张以后就抱错，抱错的代码为：file.SaveAs(Server.MapPath(relativepath));察看log里面的纪录说是：System.ObjectDisposedException: Cannot access a closed file.
不知道为什么了，恳请大家帮忙！谢谢！

[chauncey1984]

up

[孟子E章]

贴代码。错误描述说的很清楚了

[chauncey1984]

protected void btnSave_Click(object sender, EventArgs e)
{
if (Session["HttpPostedFileSession"] != null)
{
List<HttpPostedFile> postedFileList = (List<HttpPostedFile>)Session["HttpPostedFileSession"];

foreach (HttpPostedFile f in postedFileList)
{
//f.SaveAs(HttpContext.Current.Request.PhysicalApplicationPath + "FileModule/MultiUploader/upload/" + f.FileName);

HttpFileCollection uploadFile = Request.Files;
string fileFormat, fileName, GUIDName, GUIDFileName;
int fileTypeID = int.Parse(ddlFileTypeDropDown.selectedValue);
string extensionType = FileModule.FileTypeTable.getExtensionByFileTypeID(fileTypeID);



if (!string.IsNullOrEmpty(f.FileName))
{
string[] file = f.FileName.Split('.');
fileFormat = file[1];
fileName = file[0];

GUIDFileName = System.Guid.NewGuid().ToString();
GUIDName = GUIDFileName + "." + fileFormat;
if (extensionType.Contains(fileFormat))
{
try
{
string memberZone = FileModule.FileModuleType.getModulePath(moduleType) + moduleID + Path.AltDirectorySeparatorChar + FileModule.FileTypeTable.getTypeName(ddlFileTypeDropDown.selectedValue) + Path.AltDirectorySeparatorChar;
string relativepath = memberZone + GUIDName;
f.SaveAs(Server.MapPath(relativepath));

if (File.Exists(Server.MapPath(relativepath)))
{

if (saveToDB(f.FileName, relativepath))
{
lblmsg.Text ="Upload Successfully @" + DateTime.Now;
if (this.UpdateResultEvent != null)
{
this.UpdateResultEvent(true);
}

}
else
{
File.Delete(Server.MapPath(relativepath));
lblmsg.Text = "Insert Fail";
}
}
}
catch (Exception ex)
{
Common.writelog(ex.ToString());
lblmsg.Text = "Fail Upload";
}
}
else
{
lblmsg.Text = "Incorrect File Type!";
}
}

else
{
lblmsg.Text = "Please Upload a File";
}

}

Session.Clear();
}
}

[chauncey1984]

多谢大牛了

[masson_ma]

是不是文件超过限制呢！看看webconfig 的httpRuntime节