Support / Forums / Sitefinity 3.x: Developing with Sitefinity > retrieve event id from event page

• SelArom MVP

  Posted on Sep 30, 2008 (permalink)

  Is it possible to get the event id from an eventview page? I'm wanting to create a link to an asp.net event handler that needs the id passed as a parameter, but I don't know how to retrieve it from the page. can this be done?

  Reply

• Joe MVP

  Posted on Sep 30, 2008 (permalink)

  I opened up a support ticket on this a while ago.  I was trying to build a http handler that would generate an calendar invite for each event.  I was told to extend the ContentView control and generate the property or update and existing control on the page.  I have not gotten it to work yet but I have not tried that much.
  
  Joseph Guadagno
  Southeast Valley .NET User Group
  

  Reply

• SelArom MVP

  Posted on Sep 30, 2008 (permalink)

  lol this is exactly what I'm trying to do. I've already completed the handler, I just need a way to pass the id into the string. I was hoping I wouldn't have to go this route as I hate to extend the contentview to just retrieve one single property that oughta be there anyway...
  
  sitefinity team: any chance accessing this property (ID) will be available in the 3.5 release?

  Reply

• Joe MVP

  Posted on Sep 30, 2008 (permalink)

  I completed the handler also and it works great.
  
  Here is what I have created or recieved from Sitefinity tech support for overriding the ContentView control.
  
  

  1	#region Base overrides
  2
  3	/// <summary>
  4	/// Overridden. Called every time a content item is being set. The method gets
  5	/// the container in which the child controls are located and <see cref="IContent"/> object
  6	/// representing the content
  7	/// </summary>
  8	/// <param name="itemContainer"></param>
  9	/// <param name="contentItem"></param>
  10	protected override void SetItemContent(Control itemContainer, IContent contentItem)
  11	{
  12	base.SetItemContent(itemContainer, contentItem);
  13
  14	// find the link control in the container
  15	HyperLink addToOutlook = (HyperLink)itemContainer.FindControl("addToOutlook");
  16
  17	if (addToOutlook != null)
  18	{
  19	// get the ID of IEvent object
  20	Guid eventId = FindEventId(contentItem);
  21	// set the url of the link
  22	addToOutlook.NavigateUrl = String.Format("~/GetICSFile.ashx?guid={0}", eventId);
  23	}
  24
  25	HyperLink addToGoogle = (HyperLink)itemContainer.FindControl("addToGoogle");
  26	if (addToGoogle != null)
  27	{
  28	// get the ID of IEvent object
  29	Guid eventId = FindEventId(contentItem);
  30	// set the url of the link
  31	addToGoogle.NavigateUrl = String.Format("~/GetICSFile.ashx?guid={0}", eventId);
  32	}
  33	}
  34
  35	#endregion
  36
  37	#region Helper functions
  38
  39	/// <summary>
  40	/// Gets the ID of <see cref="IEvent"/> object based on the <see cref="IContent"/> object associated with it.
  41	/// </summary>
  42	/// <param name="cnt">The <see cref="IContent"/> object</param>
  43	/// <returns></returns>
  44	private Guid FindEventId(IContent cnt)
  45	{
  46	if (cnt == null)
  47	return Guid.Empty;
  48
  49	EventsManager eManager = new EventsManager(cnt.ProviderName);
  50	IEvent @event = eManager.GetEventByContentId(cnt.ID);
  51	if (@event != null)
  52	return @event.ID;
  53
  54	return Guid.Empty;
  55	}
  56
  57	#endregion

  
  
  
  Joseph Guadagno
  Southeast Valley .NET User Group
  
  

  Reply

• SelArom MVP

  Posted on Sep 30, 2008 (permalink)

  WELL!! I managed to totally hack this together to work. what I did was drop a user control into the eventview page, then used reflection to navigate back through the eventview to get the item id. once I got that i just needed to use the event manager to grab the event by the content item id!!
  
  then I just find the hyperlink control I added to the same eventview page and modify it to link to the handler with the event id. TOTALLY WORKS!!
  
  here's the code behind for the user control:
  
  

  using System;

  using System.Collections.Generic;

  using System.Web;

  using System.Web.UI;

  using System.Web.UI.WebControls;

  using Telerik.Events;

  using Telerik.Events.WebControls;

  public partial class UserControls_Internal_CalendarReminder : System.Web.UI.UserControl

  {

  protected void Page_Load(object sender, EventArgs e)

  {

  EventsView view = Parent.Parent.Parent as EventsView;

  HyperLink lnk = Parent.FindControl("CalendarReminder") as HyperLink;

  EventsManager mgr = new EventsManager("Events");

  IEvent ev = mgr.GetEventByContentId(view.SelectedItemId);

  lnk.NavigateUrl = string.Format("~/EventReminder.ashx?id={0}", ev.ID);

  lnk.Text = "Save To Outlook Calendar";

  }

  }

  
  I can see potentional for all kinds of customization of the content view now that I've found a way to get in there! but are there any dangers to accessing the content this way?
  
  screen cap of example
  
  i don't have a live example to show because we're waiting for the new 3.5 sitefinity release to upload all new updates...
  
  hope this was helpful!

  Reply

• Telerik Admin

  Posted on Oct 1, 2008 (permalink)

  Hello Josh,
  
  Thanks a lot for sharing your code samples. As a note of gratitude we have updated your Telerik account.
  
  Regards,
  Pepi
  the Telerik team

  
  Check out Telerik Trainer, the state of the art learning tool for Telerik products.

  Reply

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Support / Forums / Sitefinity 3.x: Developing with Sitefinity > retrieve event id from event page