private void Page_Load(object sender, System.EventArgs e)
{
// The base page has already created the module, we only have to cast it here to the right type.
this._downloadsModule = base.Module as DownloadsModule;
this._fileId = Int32.Parse(Request.QueryString["FileId"]);
if (this._fileId > 0)
{
this._file = this._downloadsModule.GetFileById(this._fileId);
if (! this.IsPostBack)
{
BindFile();
}
this.btnDelete.Visible = true;
this.btnDelete.Attributes.Add("onclick", "return confirm('Are you sure?');");
}
else
{
// It is possible that a new file is already uploaded and in the database. The
// tempFileId parameter in the viewstate should indicate this.
if (ViewState["tempFileId"] != null)
{
int tempFileId = (int)ViewState["tempFileId"];
this._file = this._downloadsModule.GetFileById(tempFileId);
}
else
{
// New file.
this._file = new File();
// Copy roles that have view rights from parent section.
foreach (Permission permission in this._downloadsModule.Section.SectionPermissions)
{
this._file.AllowedRoles.Add(permission.Role);
}
this.calDatePublished.SelectedDate = DateTime.Now;
}
this.btnDelete.Visible = false;
}
if (! this.IsPostBack)
{
BindRoles();
}
}
public virtual void SaveFileInfo(File file)
{
// Obtain current NHibernate session.
ISession session = this._sessionManager.OpenSession();
// Save meta-information
session.SaveOrUpdate(file);
}
public virtual void SaveFile(File file, System.IO.Stream fileContents)
{
// Save physical file.
string physicalFilePath = System.IO.Path.Combine(this.FileDir, file.FilePath);
this._fileService.WriteFile(physicalFilePath, fileContents);
// Save meta-information.
SaveFileInfo(file);
}
/// <summary>
/// Increase the number of downloads for the given file.
/// </summary>
/// <param name="file"></param>
public virtual void IncreaseNrOfDownloads(File file)
{
ISession session = this._sessionManager.OpenSession();
// First refresh the file to prevent stale updates because downloads can take a little while.
session.Refresh(file);
file.NrOfDownloads++;
SaveFileInfo(file);
}
/// <summary>
/// Get the a file as stream.
/// </summary>
/// <returns></returns>
public System.IO.Stream GetFileAsStream(File file)
{
if (file.IsDownloadAllowed(HttpContext.Current.User.Identity))
{
string physicalFilePath = System.IO.Path.Combine(this.FileDir, file.FilePath);
if (System.IO.File.Exists(physicalFilePath))
{
return this._fileService.ReadFile(physicalFilePath);
}
else
{
throw new System.IO.FileNotFoundException("File not found", physicalFilePath);
}
}
else
{
throw new AccessForbiddenException("The current user has no permission to download the file.");
}
}
public virtual void DeleteFile(File file)
{
// Delete physical file.
string physicalFilePath = System.IO.Path.Combine(this.FileDir, file.FilePath);
this._fileService.DeleteFile(physicalFilePath);
// Delete meta information.
ISession session = this._sessionManager.OpenSession();
session.Delete(file);
}