protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string strCoursewareID = Request.QueryString.Get("id");
CoursewareBLL objBll = new CoursewareBLL();
RailExam.Model.Courseware obj = objBll.GetCourseware(Convert.ToInt32(strCoursewareID));
hfUrl.Value = obj.Url;
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string strCoursewareID = Request.QueryString.Get("id");
CoursewareBLL objBll = new CoursewareBLL();
RailExam.Model.Courseware obj = objBll.GetCourseware(Convert.ToInt32(strCoursewareID));
string strFileName = obj.Url.Replace("/RailExamBao/Online/Courseware/" + obj.CoursewareID + "/", "");
FileInfo f = new FileInfo(strFileName);
//下载文件的路径
string path = Server.MapPath(obj.Url);
//下载文件的名称
string filename = f.Name;
System.IO.FileInfo toDownload = new System.IO.FileInfo(path);
if (toDownload.Exists == true)
{
const long ChunkSize = 10000;
byte[] buffer = new byte[ChunkSize];
Response.Clear();
System.IO.FileStream iStream = System.IO.File.OpenRead(path);
long dataLengthToRead = iStream.Length;
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=new_" + HttpUtility.UrlEncode(toDownload.Name));
while (dataLengthToRead > 0 && Response.IsClientConnected)
{
int lengthRead = iStream.Read(buffer, 0, Convert.ToInt32(ChunkSize));
Response.OutputStream.Write(buffer, 0, lengthRead);
Response.Flush();
dataLengthToRead = dataLengthToRead - lengthRead;
}
iStream.Close();
Response.Close();
}
}
}
