protected void btnUpload_Click(object sender, EventArgs e)
{
LectureNote lNote = new LectureNote();
lNote.LectureId = -1;
lNote.CourseId = Session["courseID"].ToString();
//Check whether or not the title is specified.
if (txtboxLectureTitle.Text == String.Empty)
{
ClientScript.RegisterStartupScript(this.GetType(), "errorTitle",
"alert('Please provide title of the lecture note!!!');", true);
}
else
{
lNote.LTitle = txtboxLectureTitle.Text;
//Check whether or not there is valid file to upload.
if (fileuploadLectureNote.HasFile)
{
if (fileuploadLectureNote.PostedFile.ContentType.ToLower() == "application/pdf"
|| fileuploadLectureNote.PostedFile.ContentType.ToLower() == "application/x-mspowerpoint")
{
//Append date and time in the filename to make it unique.
string filename = Path.GetFileNameWithoutExtension(fileuploadLectureNote.FileName) +
DateTime.Now.ToString("_yyyy_mm_dd_HH_mm_ss");
string extension = Path.GetExtension(fileuploadLectureNote.FileName);
string directory = Server.MapPath("~/CourseMaterials/" + Session["courseID"] + "/LectureNote");
//Create directory if no folder toa save the lecture note
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
lNote.LFileLocation = directory + "/" + filename + extension;
fileuploadLectureNote.SaveAs(lNote.LFileLocation);
ClientScript.RegisterStartupScript(this.GetType(), "successUpload",
"alert('Uploaded successfully!!!');", true);
LectureNoteController.Save(lNote);
Response.Redirect("~/InstructorSite/formManageLectureNote.aspx");
}
else //If the file format is invalid.
{
ClientScript.RegisterStartupScript(this.GetType(), "fileFormatError",
"alert('File format error: Only pdf or ppt files are allowed!!!');",
true);
}
}
else //If the path doesn't contain any file
{
ClientScript.RegisterStartupScript(this.GetType(), "failUpload",
"alert('Please specify the file to upload.!!!');", true);
}
}
}
/// <summary>
/// Creates an instance of LectureNote from the data record in the database.
/// </summary>
/// <param name="myRecord">Single row of record.</param>
/// <returns>An LectureNote.</returns>
private static LectureNote FillRecord(IDataRecord myRecord)
{
LectureNote myLectureNote = new LectureNote();
//myLectureNote.CourseId = myRecord.GetString(myRecord.GetOrdinal("CourseID"));
myLectureNote.LectureId = myRecord.GetInt32(myRecord.GetOrdinal("LectureID"));
myLectureNote.LTitle = myRecord.GetString(myRecord.GetOrdinal("LTitle"));
myLectureNote.LFileLocation = myRecord.GetString(myRecord.GetOrdinal("LFileLocation"));
return myLectureNote;
}
/// <summary>
/// Saves an LectureNote in the database.
/// </summary>
/// <param name="myLectureNote">The LectureNote to store.</param>
/// <returns>The new LectureNote id if the LectureNote is new in the database or the existing ID when an record was updated.</returns>
public static int Save(LectureNote myLectureNote)
{
int result = 0;
using (SqlConnection myConnection = new SqlConnection(AppSettings.ConnectionString))
{
SqlCommand myCommand = new SqlCommand("spInsertUpdateLectureNote", myConnection);
myCommand.CommandType = CommandType.StoredProcedure;
myCommand.Parameters.AddWithValue("@courseID", myLectureNote.CourseId);
myCommand.Parameters.AddWithValue("@ltitle", myLectureNote.LTitle);
myCommand.Parameters.AddWithValue("@lfilelocation", myLectureNote.LFileLocation);
DbParameter retValue = myCommand.CreateParameter();
retValue.Direction = ParameterDirection.ReturnValue;
myCommand.Parameters.Add(retValue);
myConnection.Open();
myCommand.ExecuteNonQuery();
result = Convert.ToInt32(retValue.Value);
myConnection.Close();
}
return result;
}
public static int Save(LectureNote myLectureNote)
{
return LectureNoteDA.Save(myLectureNote);
}