/// <summary>
/// Load a calendar file uploaded by the user. It can be a vCalendar or an iCalendar file
/// </summary>
/// <param name="sender">The sender of the event</param>
/// <param name="e">The event arguments</param>
protected void btnUpload_Click(object sender, EventArgs e)
{
VCalendar vc = (VCalendar)Session["VCalendar"];
if (hifUpload.Value == null || hifUpload.Value.Length == 0)
{
lblMsg.Text = "Specify a filename to upload";
return;
}
// Get the file data from the uploaded stream
try
{
// Dispose of the old calendar
vc.Dispose();
// Set the file and property encodings to use. Since we are opening the stream, we have to pass
// the encoding to the StreamReader rather than using PDIParser.DefaultEncoding.
Encoding fileEnc;
switch (cboFileEncoding.SelectedIndex)
{
case 0:
fileEnc = new UTF8Encoding(false, false);
break;
case 1:
fileEnc = Encoding.GetEncoding("iso-8859-1");
break;
default:
fileEnc = new ASCIIEncoding();
break;
}
// This is only applicable for vCalendar 1.0
switch (cboPropEncoding.SelectedIndex)
{
case 0:
BaseProperty.DefaultEncoding = new UTF8Encoding(false, false);
break;
case 1:
BaseProperty.DefaultEncoding = Encoding.GetEncoding("iso-8859-1");
break;
default:
BaseProperty.DefaultEncoding = new ASCIIEncoding();
break;
}
using (var sr = new StreamReader(hifUpload.PostedFile.InputStream, fileEnc))
{
vc = VCalendarParser.ParseFromStream(sr);
vc.Events.Sort(CalendarSorter);
vc.ToDos.Sort(CalendarSorter);
vc.Journals.Sort(CalendarSorter);
vc.FreeBusys.Sort(CalendarSorter);
Session["VCalendar"] = vc;
dgEvents.DataSource = vc.Events;
dgToDos.DataSource = vc.ToDos;
dgJournals.DataSource = vc.Journals;
dgFreeBusys.DataSource = vc.FreeBusys;
dgEvents.DataBind();
dgToDos.DataBind();
dgJournals.DataBind();
dgFreeBusys.DataBind();
if (vc.Version == SpecificationVersions.vCalendar10)
{
lblVersion.Text = "vCalendar 1.0";
dgJournals.Visible = dgFreeBusys.Visible = false;
}
else
{
lblVersion.Text = "iCalendar 2.0";
dgJournals.Visible = dgFreeBusys.Visible = true;
}
}
lblMsg.Text = "The file was loaded successfully";
}
catch (PDIParserException pex)
{
System.Diagnostics.Debug.WriteLine(pex.ToString());
lblMsg.Text = "Unable to parse file: " + pex.Message;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
lblMsg.Text = "Unable to load file: " + ex.Message;
}
}
/// <summary>
/// Open a vCalendar or iCalendar file
/// </summary>
/// <param name="sender">The sender of the event</param>
/// <param name="e">The event arguments</param>
private void miOpen_Click(object sender, EventArgs e)
{
if (wasModified && MessageBox.Show("Do you want to discard your changes to the current calendar?",
"Discard Changes", MessageBoxButtons.YesNo, MessageBoxIcon.Question,
MessageBoxDefaultButton.Button2) == DialogResult.No)
{
return;
}
using (OpenFileDialog dlg = new OpenFileDialog())
{
dlg.Title = "Load Calendar File";
dlg.Filter = "ICS files (*.ics)|*.ics|VCS files (*.vcs)|*.vcs|All files (*.*)|*.*";
if (vCal.Version == SpecificationVersions.vCalendar10)
{
dlg.DefaultExt = "vcs";
dlg.FilterIndex = 2;
}
else
{
dlg.DefaultExt = "ics";
dlg.FilterIndex = 1;
}
dlg.InitialDirectory = Path.GetFullPath(Path.Combine(
Environment.CurrentDirectory, @"..\..\..\..\..\PDIFiles"));
if (dlg.ShowDialog() == DialogResult.OK)
{
try
{
this.Cursor = Cursors.WaitCursor;
// Parse the calendar information from the file and load the data grid with some basic
// information about the items in it.
vCal.Dispose();
vCal = VCalendarParser.ParseFromFile(dlg.FileName);
LoadComponentList();
// Find the first collection with items
if (vCal.Events.Count != 0)
{
cboComponents.SelectedIndex = 0;
}
else
if (vCal.ToDos.Count != 0)
{
cboComponents.SelectedIndex = 1;
}
else
if (vCal.Journals.Count != 0)
{
cboComponents.SelectedIndex = 2;
}
else
if (vCal.FreeBusys.Count != 0)
{
cboComponents.SelectedIndex = 3;
}
else
{
cboComponents.SelectedIndex = 0;
}
LoadGridWithItems(true);
lblFilename.Text = dlg.FileName;
}
catch (Exception ex)
{
string error = String.Format("Unable to load calendar:\n{0}", ex.Message);
if (ex.InnerException != null)
{
error += ex.InnerException.Message + "\n";
if (ex.InnerException.InnerException != null)
{
error += ex.InnerException.InnerException.Message;
}
}
System.Diagnostics.Debug.Write(ex);
MessageBox.Show(error, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
this.Cursor = Cursors.Default;
}
}
}
}
/// <summary>
/// Generate instances for the specified component
/// </summary>
/// <param name="sender">The sender of the event</param>
/// <param name="e">The event parameters</param>
protected void btnTest_Click(object sender, EventArgs e)
{
RecurringObject ro = null;
DateTimeInstanceCollection instances;
string calendar;
int start;
double elapsed;
DateTime startDate, endDate;
try
{
lblCount.Text = String.Empty;
if (!DateTime.TryParse(txtStartDate.Text, CultureInfo.CurrentCulture, DateTimeStyles.None,
out startDate) || !DateTime.TryParse(txtEndDate.Text, CultureInfo.CurrentCulture,
DateTimeStyles.None, out endDate))
{
lblCount.Text = "Invalid start or end date/time format";
return;
}
// Wrap it in VCALENDAR tags and parse it
calendar = String.Format("BEGIN:VCALENDAR\nVERSION:2.0\n{0}\nEND:VCALENDAR", txtCalendar.Text);
VCalendar cal = VCalendarParser.ParseFromString(calendar);
// Get the first event, to-do, or journal item
if (cal.Events.Count > 0)
{
ro = cal.Events[0];
}
else
if (cal.ToDos.Count > 0)
{
ro = cal.ToDos[0];
}
else
if (cal.Journals.Count > 0)
{
ro = cal.Journals[0];
}
if (ro == null)
{
lblCount.Text = "No event, to-do, or journal item found";
return;
}
// Apply the time zone to the calendar. If "None" is selected, the time zone will be cleared on
// all items.
if (cboTimeZone.SelectedIndex < 1)
{
cal.ApplyTimeZone(null);
}
else
{
cal.ApplyTimeZone(VCalendar.TimeZones[cboTimeZone.SelectedIndex - 1]);
}
foreach (RRuleProperty rrule in ro.RecurrenceRules)
{
ApplyLimits(ro, rrule.Recurrence);
}
foreach (ExRuleProperty exrule in ro.ExceptionRules)
{
ApplyLimits(ro, exrule.Recurrence);
}
txtCalendar.Text = ro.ToString();
start = System.Environment.TickCount;
instances = ro.InstancesBetween(startDate, endDate, chkInLocalTime.Checked);
elapsed = (System.Environment.TickCount - start) / 1000.0;
cal.Dispose();
// The date instance contains the start and end date/times, the duration, and time zone
// information. The duration is based on the duration of the calendar component. The time zone
// information is based on the "In Local Time" parameter of the InstancesBetween() method and
// whether or not the component has a Time Zone ID specified.
dlDates.DataSource = instances;
dlDates.DataBind();
// If nothing was found remind the user that they may need to adjust the start and end date range
// to find stuff within the item.
if (instances.Count == 0)
{
lblCount.Text = "Nothing found. If this was unexpected, check the limiting date range " +
"in the two date/time text boxes at the top of the form and the calendar item date/time " +
"properties to make sure that they do overlap<br/><br/>";
}
lblCount.Text += String.Format("Found {0:N0} instances in {1:N2} seconds ({2:N2} instances/second)",
instances.Count, elapsed, instances.Count / elapsed);
}
catch (Exception ex)
{
lblCount.Text = ex.Message;
}
}
/// <summary>
/// Test the recurrence within the specified iCalendar component
/// </summary>
/// <param name="sender">The sender of the event</param>
/// <param name="e">The event arguments</param>
private void btnTest_Click(object sender, EventArgs e)
{
RecurringObject ro = null;
DateTimeInstanceCollection instances;
string calendar;
int start;
double elapsed;
try
{
lblCount.Text = null;
// Wrap it in VCALENDAR tags and parse it
calendar = String.Format("BEGIN:VCALENDAR\nVERSION:2.0\n{0}\nEND:VCALENDAR", txtCalendar.Text);
VCalendar cal = VCalendarParser.ParseFromString(calendar);
// Get the first event, to-do, or journal item
if (cal.Events.Count > 0)
{
ro = cal.Events[0];
}
else
if (cal.ToDos.Count > 0)
{
ro = cal.ToDos[0];
}
else
if (cal.Journals.Count > 0)
{
ro = cal.Journals[0];
}
if (ro == null)
{
lblCount.Text = "No event, to-do, or journal item found";
return;
}
// Apply the time zone to the calendar. If "None" is selected, the time zone will be cleared on
// all items.
if (cboTimeZone.SelectedIndex < 1)
{
cal.ApplyTimeZone(null);
}
else
{
cal.ApplyTimeZone(VCalendar.TimeZones[cboTimeZone.SelectedIndex - 1]);
}
txtCalendar.Text = ro.ToString();
lbDates.Items.Clear();
this.Cursor = Cursors.WaitCursor;
start = System.Environment.TickCount;
instances = ro.InstancesBetween(dtpStartDate.Value, dtpEndDate.Value, chkInLocalTime.Checked);
elapsed = (System.Environment.TickCount - start) / 1000.0;
cal.Dispose();
// The date instance contains the start and end date/times, the duration, and time zone
// information. The duration is based on the duration of the calendar component. The time
// zone information is based on the "In Local Time" parameter of the InstancesBetween() method
// and whether or not the component has a Time Zone ID specified.
foreach (DateTimeInstance dti in instances)
{
lbDates.Items.Add(String.Format("{0:G} {1} to {2:G} {3} ({4})", dti.StartDateTime,
dti.AbbreviatedStartTimeZoneName, dti.EndDateTime, dti.AbbreviatedEndTimeZoneName,
dti.Duration.ToDescription()));
if (lbDates.Items.Count > 5000)
{
lblCount.Text += "A large number of instances were returned. Only the first 5000 " +
"have been loaded into the list box.\r\n";
break;
}
}
// If nothing was found remind the user that they may need to adjust the start and end date range
// to find stuff within the item.
if (instances.Count == 0)
{
MessageBox.Show("Nothing found. If this was unexpected, check the limiting date range in " +
"the two date/time text boxes at the top of the form and the calendar item date/time " +
"properties to make sure that they do overlap");
}
lblCount.Text += String.Format("Found {0:N0} instances in {1:N2} seconds ({2:N2} instances/second)",
instances.Count, elapsed, instances.Count / elapsed);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
this.Cursor = Cursors.Default;
}
}
