protected void Page_Load(object sender, EventArgs e)
{
// set <currentUser> to information about the current user, and add the current user's list
// of training to the TrainingGrid table; for best performance, both these requests are
// done in a single call to the database
LearningStoreJob job = LStore.CreateJob();
RequestCurrentUserInfo(job);
RequestMyTraining(job, null);
ReadOnlyCollection <object> results = job.Execute();
LStoreUserInfo currentUser = GetCurrentUserInfoResults((DataTable)results[0]);
GetMyTrainingResultsToHtml((DataTable)results[1], TrainingGrid);
// update the title
MyUserName.Text = Server.HtmlEncode(currentUser.Name);
// if there is no training (i.e. if TrainingGrid contains only the header row), initially
// hide TrainingGrid and show a message instructing the user to upload content
if (TrainingGrid.Rows.Count == 1)
{
TrainingPanel.Attributes.Add("style", "display: none");
}
else
{
NoTrainingMessage.Attributes.Add("style", "display: none");
}
// since there is no initial selection, intially disable the "Delete Packages" link
DeletePackagesLink.Attributes.Add("disabled", "true");
// set the version number
VersionNumber.Text = System.Text.RegularExpressions.Regex.Match(
typeof(LearningStore).Assembly.FullName, @"\bVersion=(\d+\.\d+.\d+)\.").Groups[1].Value;
}
protected void CreateAttemptButton_Click(object sender, EventArgs e)
{
// the hidden "Create Attempt" button was auto-clicked by script on page load...
// prevent script from clicking "Create Attempt" again
AutoPostScript.Visible = false;
// hide the "please wait" panel
PleaseWait.Visible = false;
// the OrganizationId hidden form element contains the ID of the organization to attempt --
// try to create a new attempt based on that ID; an organization is a root-level activity,
// so OrganizationId is actually an ActivityPackageItemIdentifier
try
{
// set <currentUser> to information about the current user; we
// need the current user's UserItemIdentifier
LStoreUserInfo currentUser = GetCurrentUserInfo();
// set <organizationId> from the OrganizationId hidden form element as described above
ActivityPackageItemIdentifier organizationId = new ActivityPackageItemIdentifier(
Convert.ToInt64(OrganizationId.Value, CultureInfo.InvariantCulture));
// create an attempt on <organizationId>
StoredLearningSession session = StoredLearningSession.CreateAttempt(PStore,
currentUser.Id, organizationId, LoggingOptions.LogAll);
// the operation was successful, and there are no messages to display to the user, so
// update the AttemptId hidden form element with the ID of the newly-created attempt,
// update the parent page, and close the dialog
AttemptId.Value = Convert.ToString(session.AttemptId.GetKey(), CultureInfo.InvariantCulture);
UpdateParentPageScript.Visible = true;
CloseDialogScript.Visible = true;
}
catch (Exception ex)
{
// an unexpected error occurred -- display a generic message that
// doesn't include the exception message (since that message may
// include sensitive information), and write the exception message
// to the event log
ErrorIntro.Visible = true;
ErrorMessage.Visible = true;
ErrorMessage.Controls.Add(new System.Web.UI.LiteralControl(
Server.HtmlEncode("A serious error occurred. Please contact your system administrator. More information has been written to the server event log.")));
LogEvent(System.Diagnostics.EventLogEntryType.Error,
"An exception occurred while creating an attempt:\n\n{0}\n\n", ex.ToString());
Buttons.Visible = true;
}
}
protected void UploadPackageButton_OnClick(object sender, EventArgs e)
{
// the user clicked "Upload"...
// do nothing if the user didn't select a file to upload
if (!UploadedPackageFile.HasFile)
{
return;
}
// hide the upload panel and show the message panel; the message panel will hold
// information about the success or failure of the package upload operation
UploadPanel.Visible = false;
MessagePanel.Visible = true;
// attempt to import the uploaded file into PackageStore
try
{
// set <currentUser> to information about the current user; we need the current user's
// UserItemIdentifier
LStoreUserInfo currentUser = GetCurrentUserInfo();
// import the package file; set packageId to the ID of the uploaded
// package; set importLog to a collection of warnings (if any)
// about the import process
PackageItemIdentifier packageId;
ValidationResults importLog;
using (PackageReader packageReader = PackageReader.Create(UploadedPackageFile.FileContent))
{
// Add package, asking to fix anything that can be fixed.
AddPackageResult result = PStore.AddPackage(packageReader, new PackageEnforcement(false, false, false));
packageId = result.PackageId;
importLog = result.Log;
}
// fill in the application-specific columns of the PackageItem table
LearningStoreJob job = LStore.CreateJob();
Dictionary <string, object> properties = new Dictionary <string, object>();
properties[Schema.PackageItem.Owner] = currentUser.Id;
properties[Schema.PackageItem.FileName] = UploadedPackageFile.FileName;
properties[Schema.PackageItem.UploadDateTime] = DateTime.Now;
job.UpdateItem(packageId, properties);
job.Execute();
// retrieve information about the package
job = LStore.CreateJob();
RequestMyTraining(job, packageId);
GetMyTrainingResultsToHtml(job.Execute <DataTable>(), TrainingGrid);
// when the page loads in the browser, copy information about the from the TrainingGrid
// hidden table to the main page using client-side script
UpdateParentPageScript.Visible = true;
// provide user feedback
if (importLog.HasWarnings)
{
// display warnings
WarningIntro.Visible = true;
WarningMessages.Visible = true;
foreach (ValidationResult result in importLog.Results)
{
ScrollingMessagesList.Items.Add(new ListItem(result.Message));
}
}
else
{
// the operation was successful, and there are no messages to display to the user,
// so close the dialog
CloseDialogScript.Visible = true;
}
}
catch (PackageImportException ex)
{
// a package import failure occurred -- display the error message
ErrorIntro.Visible = true;
ErrorMessage.Visible = true;
foreach (ValidationResult result in ex.Log.Results)
{
ErrorMessageScrollingList.Items.Add(new ListItem(result.Message));
}
if (ex.InnerException != null)
{
ErrorMessageScrollingList.Items.Add(new ListItem(
Server.HtmlEncode(ex.InnerException.Message)));
}
}
catch (Exception ex)
{
// an unexpected error occurred -- display a generic message that doesn't include the
// exception message (since that message may include sensitive information), and write
// the exception message to the event log
ErrorIntro.Visible = true;
ErrorMessage.Visible = true;
ErrorMessage.Controls.Add(new System.Web.UI.LiteralControl(
Server.HtmlEncode("A serious error occurred. Please contact your system administrator. More information has been written to the server event log.")));
LogEvent(System.Diagnostics.EventLogEntryType.Error,
"An exception occurred while uploading a package:\n\n{0}\n\n", ex.ToString());
}
}
