Duration Field IN Calendar List of Sharepoint

When I try to create a Column name called "Duration' in calendar List of Sharepoint, It says, "The Column name that you entered is already in use or reserved".
-> I do not find any column called "Duration" in All Site Columns
-> I have not created any field with thi same prior to this.
What is happening????
thanks.

if you go look at C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\FEATURES\EventsList\Events\schema.xml
you will see a hidden and sealed column with the same name. hidden columns do not appear in the all site columns view in the UI.kipper stiever

Similar Messages

How to get attendies count for a calendar list in sharepoint 2013?

Hi everybody,
I am using calendar list in SharePoint 2013 for my project.
Could please tell me how to get the count of attendees using SP Designer or OOTB calculated field.
Because I want to display the fields like
TOTAL SEATS =20
Attendees= Need count
Avail seats= total - Attendees count.
In that way I want to show information about availability seats for training session.
Regards,
Dhayanand

Hi Dhaya
Please refer the links.Hope it helps :-)
http://social.msdn.microsoft.com/Forums/en-US/b8677dc5-3eb1-4bdc-92f2-f57201bfabb1/field-that-counts-attendees?forum=sharepointcustomizationprevious
http://sharepoint.stackexchange.com/questions/54253/use-count-related-column-value-as-int-in-a-sp-designer-workflow

How to raise mail notification when ever the new event is added to calendar list in sharepoint 2010?

Hi experts, I need guidance or the way how we can raise mail,
When ever the new item is added / updated / deleted / cancelled to a calendar list in SharePoint 2010.
Shall we achieve it through using SharePoint designer 2010.
If its help to fix the requirement.
Thanks and Regards,
Dhayanand Kalimidi

>I need to send the mail before 1 week from the date
This is different requirement. Initially you said you want send email when item is added / updated / deleted in list. For this you can use default alert to send instant email as suggested before.
Now if you want to send reminder email then you can use designer WF and calculate the due date by using variable. Refer this link for your ref:
http://mysharepointchronicles.wordpress.com/2012/11/05/sharepoint-list-with-workflow-email-reminder-set-to-send-30-days-from-created-date/
http://social.msdn.microsoft.com/Forums/sharepoint/en-US/3211ee00-92de-47f1-b611-4c9609f92ab7/how-do-i-set-sharepoint-2010-to-send-a-reminder-email-a-month-after-a-date-already-listed?forum=sharepointdevelopmentlegacy
Remember event receiver can not send reminder email or scheduled email so for this either use designer WF or create timer job.
Hope it could help
Hemendra:Yesterday is just a memory,Tomorrow we may never see
Please remember to mark the replies as answers if they help and unmark them if they provide no help

WorkFlow Issues: Appending (not replace) Attendee Field in Calendar List and Email Variables (including .ICS file link)

Kind of new to attempting any custom development in SharePoint. Working with 2013 and have the 2013 Workflow Farm setup/working. I am trying to have a calendar that users can register to appointments via custom list. I
have the list that pulls the title into its own "Event" field as a lookup. Also have a workflow on the calendar that adds the current user as an attendee and made that field "not required". I'm trying to accomplish this:
1) Have the Custom List update the Calendar list attendee field with the username. Currently it wipes out what is there and replaces with the "Created By" name. Tried to set a variable that would put the current attendees in a string
and just add the current user, then use that variable to update the attendee field. No luck. Ultimately if I can understand this enough and get fancy enough, I'd setup a workflow that can have someone delete their own registration item in
the custom list and remove only their own name from Attendees...
2) Have a workflow kick off an email that sends the registrant the calendar details. Have tried to pipe in variables to get the ICS file (some variation of this )
If I put the List ID in brackets I get an error about having that and variables in the same code for an email workflow. In any event I can't really get the email workflow to give any kind of nice piped in values the best looked like this and had
the wrong date: You registered for {"results":[{"Id":22,"Value":"Test Event 8"}]} on 1/1/0001 12:00:00 AM

Hi Jason,
seems your requirement a bit complex, we forum team may have limited resource regarding this issue.
you may consider to use infopath for example from this 3rd party article:
http://www.bizsupportonline.net/infopath2007/programmatically-add-item-sharepoint-calendar-infopath.htm
or for general example:
http://office.microsoft.com/en-001/infopath-help/customize-a-sharepoint-list-form-HA101821257.aspx
the article is to add an item to your calendar list, so then you may need to do wipe or other procedures, by infopath you may add the data as
you need.
if should infopath feature may not be possible to use in your environment, i may need to suggest you to open an advisory case to us, by contacting our representative,
https://support.microsoft.com/
Regards,
Aries
Microsoft Online Community Support
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Sorting and filtering by select-multi person or group field in the list in SharePoint 2013

Hi everybody,
In SharePoint 2013, I have defined a column as "Person or Group" field, which you allow for multiple selections. when I try to sort/filter it by this field in the list. The field doesn't show up in the dropdown. If I changed "Allow multiple
selections" option to "No" by clicking the column name to edit it in "List Settings", the field can show up sort in the dropdown.
How about support sorting and filter by select-multiple "Person or Group" field in sharepoint 2013?
BTW, in SharePoint 2010, it can support this issue no matter what the "Allow multiple selections" option the request is.
Any help would be great!
Thanks,
Jodie

Hi Jodie,
Can you please give this as a try.
To fix the Filter Issue on Assigned To Column. We need to run the following scripts.
The field which allows more than one values or which allows multiple selections. The multi-valued fileds are non-sortable,
non-filterable. Multi-valued fields cannot be indexed
$web=Get-SPWeb
$list=$web.Lists[] $field=$list.Fields[ColumnName] $strSchema=$field.SchemaXml $str=Schema$strSchema.Replace("Sortable=`"FALSE`"","Sortable=`"true`"")
$field.SchemaXml = $strSchema
Krishana Kumar http://www.mosstechnet-kk.com
Thanks for your reply, I have tried to run the scripts, but it still cannot work. The following is my scripts:
$web=Get-SPWeb 'http://cst-server-01'
$list=$.web.Lists["Product Request"]
$field=$list.Fields["Applicant"]
$strSchema=$field.SchemaXml
$str=Schema$strSchema.Replace("Sortable='"FALSE'"", "Sortable='"True'"")
$field.SchemaXml = $strSchema

Add two attachment field in custom list through sharepoint designer 2013

Hi all,
I want to add two attachment columns to the SharePoint 2013 custom list through SharePoint Designer 2013 (not using ribbon attachment option) only . I managed to attach single attachment column to the attachment field. But I am not able to create second
field for attachment.
for example, one column for attaching address proof and second column for identity proof.
Any help would be appreciated.

Out of the box this simply isn't going to be possible the way you seem to want it. The attachment field does allow for multiple attachment, but I can see why you'd potentially want these separated out.
Alternative:
You could instead create a link field for each. Users load the documents into a document library and then copy the URL to paste into the form. If you potentially need multiple attachments for each, you can use an InfoPath form and a repeating table.
Andy Wessendorf SharePoint Developer II | Rackspace [email protected]

How to make users to select the date from calendar control my making the date field read only in date time control in external list in sharepoint 2010

How to make users to select the date from calendar control only, by my making the date text field read only (don't want to let users type the date) in date time control in external list in sharepoint 2010. I am looking for a solution which can
be done through sharepoint desginer / out of the box.
thanks.

Congratulate you got the solution by yourself. I am new to a
WinForms calendar component, I feel so helpless on many problems even I'd read many tutorials. This question on the
calendar date selection did me a great favor. Cheers.

In SharePoint Calendar lists, fields [Start Time] and [End Time] do not exist at the Site Column level.

<header style="box-sizing:border-box;color:#777777;line-height:1;font-size:13px;padding-right:46px;margin-bottom:3px;font-family:'Helvetica Neue', arial, sans-serif;">
</header>
I'm doing SP app development and have the following problem.
I need to check Start time and End Time in SharePoint Calendar using CAML query and then add a new event to Calendar list using the Start time and End Time that user has entered in 2 datapickers
in the form.
function AddCalendarListItems() {
var SD = document.getElementById("datepicker1").value;
var SThh = document.getElementById("St1").value;
var STmm = document.getElementById("St2").value;
var ED = document.getElementById("datepicker2").value;
var EThh = document.getElementById("Et1").value;
var ETmm = document.getElementById("Et2").value;
var T = document.getElementById("Title").value;
var S1 = SThh;
SD = SD.slice(6, 10) + "-" + SD.slice(0, 2) + "-" + SD.slice(3, 5) + "T" + SThh + STmm + ":00Z";
ED = ED.slice(6, 10) + "-" + ED.slice(0, 2) + "-" + ED.slice(3, 5) + "T" + EThh + ETmm + ":00Z";
//alert("SD= " + SD + " , ED= " + ED);
var siteUrl = SiteCollurl + "/SharePointApp11";
var clientContext = new SP.ClientContext(siteUrl);
var oList = clientContext.get_web().get_lists().getByTitle('Calendar');
var ListItemCInfo = new SP.ListItemCreationInformation();
var newEvent = oList.addItem(ListItemCInfo);
newEvent.set_item("Title", T);
newEvent.set_item("EventDate", SD);
newEvent.set_item("EndDate", ED);
newEvent.update();
clientContext.executeQueryAsync(Function.createDelegate(this, this.onQueryAddCalendarSucceeded2), Function.createDelegate(this, this.onQueryAddCalendarFailed2));
function onQueryAddCalendarSucceeded2(sender, args) {
alert("Success");
function onQueryAddCalendarFailed2(sender, args) {
alert('Add new item to the calendar failed. ' + args.get_message() + '\n' + args.get_stackTrace());
But I receive the following error:
Add new item to the Calendar failed. Column 'Start time' does not exist. It may have been deleted by another user.
I've checked and 'Start time' does exist. So it seems in SharePoint Calendar lists, field [Start Time] and [End Time] exist but do not exist at the Site Column level.
Please advise.

Hi Khojasteh,
Use “EventDate” for Start Time field, and “EndDate” for End Time field. They are the internal name of the two fields, you can check it in the column settings page url like “Field=EndDate”.
If it isn’t the issue, please debug the code, in which line the error occurs.
Thanks,
Qiao
Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
[email protected]
Qiao Wei
TechNet Community Support

Find an item not returning results in SharePoint calendar list

Environment: SharePoint 2013 upgraded to SP1. We have 1000s of team sites that have been upgraded from 2010 to 2013. In the lists in these sites, quite often I encounter that
Find an item does not return results for certain fields other than the title field. For example, we have a calendar list which has a Single Line of Text field. I can not get meaningful results searching on
this field. I have tried this, no luck:
http://www.enjoysharepoint.com/Articles/Details/sharepoint-2013-find-an-item-search-box-does-not-return-20956.aspx
Search service crawls incremental every hour. I hope this does not need a full crawl.
Thanks, Soumya | MCITP, SharePoint 2010

Thanks Ganesh. All these settings are as you recommended it to be. Nonetheless I double checked and here are the results:
Ensure in the Search Service Application that the Web Application is included in the Content Source under SharePoint Start Addresses.
Yes. Please remember we are getting search results. To be specific we are not getting Find items in the list to be returning accurate results.
Make sure that the address in Alternate access mappings default text box is same as the start crawl address in the search service application.
Yes.
List Setting - Allow items from this list to appear in search results? yes
Ensured
set “Require content approval for submitted item?” to “No”.
It is set to "No". However, will it not work for approved contents also?
Thanks, Soumya | MCITP, SharePoint 2010

Email Notification on Calendar list Sharepoint Foundation 2013 not sending out email

Hi,
Actually i have 2 problem. I just don't have any idea how to solve them.
1 ) I have a machine installed with Windows Server2012 and Sharepoint Foundation 2013. Email invitation from system and alert me email is working fine. Then I created a few email sending workflow using sharepoint designer 2013. The email are going out fine
for list or document library but gave out error when i tried to send from Calendar list. The error is saying that the outgoing email is not configured correctly. If that was the case, should it be that i will receive error for all.
2) I have another machine with same installation as above but doesn't send out any kind of email(Invitation,alert me, SPD2013 custom worflow). I've checked telnet port 587, it is responding fine. I want to know if i need to open port in the firewall/router
settings for this port or if this issue is due to something else.
Any help is really appreciated.

What about Relay and Authentication?
Trevor Seward, MCC
Follow or contact me at...
This post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.
Look.
I think this is the correct configuration because it sends emails normaly with SharePoint 2010.
If I configure my own email account in Outbound Security, Sharepoint 2013 sends emails but just when I login to Sharepoint, if other users login it doesn't send emails.
Melvintt
MCTS, Windows Server 2008 R2: Network Infrastructure
MCTS, Windows Server 2008 R2: Active Directory, Configuring

How to send a Weekly E-mail to a Distribution list from Sharepoint by collecting all the events available in all Sharepoint calendars

Hi,
I have created many Calendars in my Sharepoint site like Meeting Calendar, Downtime Calendar etc. I will be creating some events in these calendars every week. My requirement is to collect all the events available in the calendar for that week
and send a weekly mail with all this events to the distribution list
Is this requirement can be done using the Sharepoint designer workflow or does it require any code related activities to accomplish this? If so can you please provide me the Steps by step process to complete this and can you also share
the code in case if you have it
Thanks in Advance

Hi,
Try with worklfow timer control and send mail to weekly.(Performance good)
http://infomoss.blogspot.in/search/label/Workflow2010
one more option try with Timerjob..(if no way use it)
http://infomoss.blogspot.in/2013/05/companymicrosoft-todo-update-copyright.html
http://infomoss.blogspot.in/2013/01/webclient-sharepoint-2010-read-image-uri.html
Thanks
Jaison A
http://infomoss.blogspot.in

Is there a way to have the description field in a calendar list item to support enhanced rich text?

We have a user who has a few hundred calendar items created in outlook. If you open the calendar item, the description includes tables with borders, shading, etc. It seems that the description field in Sharepoint calendars only support basic rich text,
so if I copy the items from the user's calendar to the sharepoint calendar, the formatting is lost. Is there any way to create a custom calendar with enhanced rich text for the description field?

This is a workaround that is working for us. I created a new column "Event Description", selected "Plain Text" and then created a basic workflow that updated Description from Event Description. #160 is no longer showing.
Please be aware that the trick to this is that you must write everything in a string. In other words, don't use the Enter key.
In my case it was worth it as we couldn't rebuild and the user needed a valid and quick fix.
Cynthia Duke
Cynthia Duke

Issue After Rating field is added to the Discussion Board List in SharePoint 2013

Hi ,
We are facing issues After Rating field is added to the Discussion Board List in SharePoint 2013. We are getting below error while adding a new item or editing a new item. Please help on this.
Ashish Kumar Baranwal

Users which were getting issues actually getting below error:
[COMException (0x81020014): One or more field types are not installed properly. Go to the list settings page to delete these fields.<nativehr>0x81020014</nativehr><nativestack></nativestack>]
Microsoft.SharePoint.Library.SPRequestInternalClass.AddOrUpdateItem(String bstrUrl, String bstrListName, Boolean bAdd, Boolean bSystemUpdate, Boolean bPreserveItemVersion, Boolean bPreserveItemUIVersion, Boolean bUpdateNoVersion, Int32& plID,
String& pbstrGuid, Guid pbstrNewDocId, Boolean bHasNewDocId, String bstrVersion, Object& pvarAttachmentNames, Object& pvarAttachmentContents, Object& pvarProperties, Boolean bCheckOut, Boolean bCheckin, Boolean bUnRestrictedUpdateInProgress,
Boolean bMigration, Boolean bPublish, String bstrFileName, ISP2DSafeArrayWriter pListDataValidationCallback, ISP2DSafeArrayWriter pRestrictInsertCallback, ISP2DSafeArrayWriter pUniqueFieldCallback) +0
Microsoft.SharePoint.Library.SPRequest.AddOrUpdateItem(String bstrUrl, String bstrListName, Boolean bAdd, Boolean bSystemUpdate, Boolean bPreserveItemVersion, Boolean bPreserveItemUIVersion, Boolean bUpdateNoVersion, Int32& plID, String&
pbstrGuid, Guid pbstrNewDocId, Boolean bHasNewDocId, String bstrVersion, Object& pvarAttachmentNames, Object& pvarAttachmentContents, Object& pvarProperties, Boolean bCheckOut, Boolean bCheckin, Boolean bUnRestrictedUpdateInProgress, Boolean bMigration,
Boolean bPublish, String bstrFileName, ISP2DSafeArrayWriter pListDataValidationCallback, ISP2DSafeArrayWriter pRestrictInsertCallback, ISP2DSafeArrayWriter pUniqueFieldCallback) +565
[SPException: One or more field types are not installed properly. Go to the list settings page to delete these fields.]
Microsoft.SharePoint.SPGlobal.HandleComException(COMException comEx) +146
Microsoft.SharePoint.Library.SPRequest.AddOrUpdateItem(String bstrUrl, String bstrListName, Boolean bAdd, Boolean bSystemUpdate, Boolean bPreserveItemVersion, Boolean bPreserveItemUIVersion, Boolean bUpdateNoVersion, Int32& plID, String&
pbstrGuid, Guid pbstrNewDocId, Boolean bHasNewDocId, String bstrVersion, Object& pvarAttachmentNames, Object& pvarAttachmentContents, Object& pvarProperties, Boolean bCheckOut, Boolean bCheckin, Boolean bUnRestrictedUpdateInProgress, Boolean bMigration,
Boolean bPublish, String bstrFileName, ISP2DSafeArrayWriter pListDataValidationCallback, ISP2DSafeArrayWriter pRestrictInsertCallback, ISP2DSafeArrayWriter pUniqueFieldCallback) +2336
Ashish Kumar Baranwal

How to add users from person or group field in a sharepoint list to sharepoint group

Hi,
How to add users(single or multiple) from person or group field in a sharepoint list to sharepoint group programmatically?
Any suggestions would be appreciated.
Thank you,
AA.

Hello,
Use SPGroup.AddUser() method to add user in group. I have just written sample code in notepad so it is not tested:
SPSecurity.RunWithElevatedPrivileges(delegate()
using(SPSite Site = new SPSite(SPContext.Current.Site.Url))
Using(SPWeb Web = Site.OpenWeb())
SPList list = web.Lists["ListName"];
SPQuery query=new SPQuery ();
query.Query = "<Where><Eq><FieldRef Name='Title' /><Value Type='Text'>Test</Value></Eq></Where>";
SPListItemCollection items = list.GetItems(query);
if(items.Count > 0)
foreach(SPListItem item in items)
//Get USers from person or group column
SPFieldUser userField = (SPFieldUser)item.Fields.GetField("Users");
SPFieldUserValueCollection userFieldValueCollection = (SPFieldUserValueCollection)userField.GetFieldValue(item["Users"].ToString());
SPGroup spGroup = spSite.RootWeb.Groups[groupName];//group name
if (users.Count != 0)
bool isUserInGroup = false;
foreach (SPFieldUserValue user in users)
foreach (SPUser item in spGroup.Users)
string itemUserName = item.LoginName;
string UserName = user.User.LoginName;
if (itemUserName == UserName)
isUserInGroup = true;
break;
if (!isUserInGroup)
spGroup.AddUser(user.User);
The above code will query list item and then get users from "Users" column. Now it will check whetehr user is already in group not, if not then add user in group.
http://rajanijilla.blogspot.sg/2012/09/add-users-to-group-programmatically.html
Hope it could help
Hemendra:Yesterday is just a memory,Tomorrow we may never see
Please remember to mark the replies as answers if they help and unmark them if they provide no help

Get Calendar List Item GUID

I downloaded code for a reservation event receiver from here:
http://blog.sharepointsydney.com.au/post/Setting-up-multiple-calendars-for-meeting-room-bookings-prevent-double-booking.aspx
However, on the ItemUpdating it throws an "Object Reference Not Set to an Instance of an Object" error. By commenting out parts of the code and re-deploying I have narrowed the issue down to the line that gets the item's GUID:
string guid_internal = collItems.List.Fields["GUID"].InternalName;
When I modify it to something like "UniqueId" I get the "Value does not fall within expected range" error. Is there a better way to obtain the GUID of the calendar list item - or am I missing something? Full code below:
using System;
using Microsoft.SharePoint;
namespace Webcoda.WSS.Calendar.Events
class PreventDoubleBooking: SPItemEventReceiver
/// <summary>
/// This event is triggered when the user adds a new item
/// </summary>
/// <param name="properties"></param>
public override void ItemAdding(SPItemEventProperties properties)
//Our query string variable
string strQuery = null;
try
//Get the Sharepoint site instance
using (SPWeb oWebsite = new SPSite(properties.SiteId).OpenWeb(properties.RelativeWebUrl))
//Get the collection of properties for the Booking item
SPListItemCollection collItems = oWebsite.Lists[properties.ListTitle].Items;
//Get the Calendar List that we will be querying against
SPList calendar = oWebsite.Lists[properties.ListId];
//Get the internal name of the fields we are querying.
//These are required for the CAML query
string start_internal = collItems.List.Fields["Start Time"].InternalName;
string end_internal = collItems.List.Fields["End Time"].InternalName;
string MeetingRoom_Internal = collItems.List.Fields["Meeting Room"].InternalName;
//Get the query string parameters
string start_str = properties.AfterProperties[start_internal].ToString();
string end_str = properties.AfterProperties[end_internal].ToString();
string MeetingRoom_str = properties.AfterProperties[MeetingRoom_Internal].ToString();
//Construct a CAML query
SPQuery query = new SPQuery();
//Create the CAML query string that checks to see if the booking we are attemping
//to add will overlap any existing bookings
strQuery = string.Format(@"
<Where>
<And>
<Or>
<Or>
<And>
<Leq>
<FieldRef Name='EventDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{0}</Value>
</Leq>
<Gt>
<FieldRef Name='EndDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{0}</Value>
</Gt>
</And>
<And>
<Lt>
<FieldRef Name='EventDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{1}</Value>
</Lt>
<Geq>
<FieldRef Name='EndDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{1}</Value>
</Geq>
</And>
</Or>
<Or>
<And>
<Leq>
<FieldRef Name='EventDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{0}</Value>
</Leq>
<Geq>
<FieldRef Name='EndDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{1}</Value>
</Geq>
</And>
<And>
<Geq>
<FieldRef Name='EventDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{0}</Value>
</Geq>
<Leq>
<FieldRef Name='EndDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{1}</Value>
</Leq>
</And>
</Or>
</Or>
<Eq>
<FieldRef Name='Meeting_x0020_Room' />
<Value Type='Choice'>{2}</Value>
</Eq>
</And>
</Where>
<OrderBy>
<FieldRef Name='EventDate' />
</OrderBy>
", start_str, end_str, MeetingRoom_str);
//Set the query string for the SPQuery object
query.Query = strQuery;
//Execute the query against the Calendar List
SPListItemCollection existing_events = calendar.GetItems(query);
//Check to see if the query returned any overlapping bookings
if (existing_events.Count > 0)
//Cancels the ItemAdd action and redirects to error page
properties.Cancel = true;
//Edit the error message that will display on the error page
properties.ErrorMessage += "This booking cannot be made because of one or more bookings in conflict. <BR><BR>";
//Here you can loop through the results of the query
//foreach (SPListItem oListItem in existing_events)
properties.ErrorMessage += "Please go back and schedule a new time.";
catch (Exception ex)
//Cancels the ItemAdd action and redirects to error page
properties.Cancel = true;
//Edit the error message that will display on the error page
properties.ErrorMessage = "Error looking for booking conflicts: " + ex.Message;
/// <summary>
/// This event is triggered when the user edits an calendar item
/// </summary>
/// <param name="properties"></param>
public override void ItemUpdating(SPItemEventProperties properties) {
string strQuery = null;
try {
//Get the Sharepoint site instance
using (SPWeb oWebsite = new SPSite(properties.SiteId).OpenWeb(properties.RelativeWebUrl)) {
//Get the collection of properties for the Booking item
SPListItemCollection collItems = oWebsite.Lists[properties.ListTitle].Items;
//Get the Calendar List that we will be querying against
SPList calendar = oWebsite.Lists[properties.ListId];
//Get the internal name of the fields we are querying.
//These are required for the CAML query
string start_internal = collItems.List.Fields["Start Time"].InternalName;
string end_internal = collItems.List.Fields["End Time"].InternalName;
string MeetingRoom_Internal = collItems.List.Fields["Meeting Room"].InternalName;
string guid_internal = collItems.List.Fields["GUID"].InternalName;
//Get the query string parameters
string start_str = properties.AfterProperties[start_internal].ToString();
string end_str = properties.AfterProperties[end_internal].ToString();
string MeetingRoom_str = properties.AfterProperties[MeetingRoom_Internal].ToString();
string guid_str = properties.AfterProperties[guid_internal].ToString();
//Construct a CAML query
SPQuery query = new SPQuery();
//Create the CAML query string that checks to see if the booking we are attemping
//to change will overlap any existing bookings, OTHER THAN ITSELF
strQuery = string.Format(@"
<Where>
<And>
<And>
<Or>
<Or>
<And>
<Leq>
<FieldRef Name='EventDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{0}</Value>
</Leq>
<Gt>
<FieldRef Name='EndDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{0}</Value>
</Gt>
</And>
<And>
<Lt>
<FieldRef Name='EventDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{1}</Value>
</Lt>
<Geq>
<FieldRef Name='EndDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{1}</Value>
</Geq>
</And>
</Or>
<Or>
<And>
<Leq>
<FieldRef Name='EventDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{0}</Value>
</Leq>
<Geq>
<FieldRef Name='EndDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{1}</Value>
</Geq>
</And>
<And>
<Geq>
<FieldRef Name='EventDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{0}</Value>
</Geq>
<Leq>
<FieldRef Name='EndDate' />
<Value Type='DateTime' IncludeTimeValue='TRUE'>{1}</Value>
</Leq>
</And>
</Or>
</Or>
<Eq>
<FieldRef Name='Meeting_x0020_Room' />
<Value Type='Choice'>{2}</Value>
</Eq>
</And>
<Neq>
<FieldRef Name='GUID' />
<Value Type='GUID'>{3}</Value>
</Neq>
</And>
</Where>
<OrderBy>
<FieldRef Name='EventDate' />
</OrderBy>
", start_str, end_str, MeetingRoom_str, guid_str);
//Set the query string for the SPQuery object
query.Query = strQuery;
//Execute the query against the Calendar List
SPListItemCollection existing_events = calendar.GetItems(query);
//Check to see if the query returned any overlapping bookings
if (existing_events.Count > 0)
//Cancels the ItemAdd action and redirects to error page
properties.Cancel = true;
//Edit the error message that will display on the error page
properties.ErrorMessage += "This booking cannot be made because of one or more bookings in conflict. <BR><BR>";
//Here you can loop through the results of the query
//foreach (SPListItem oListItem in existing_events)
properties.ErrorMessage += "Please go back and schedule a new time.";
catch (Exception ex)
//Cancels the ItemAdd action and redirects to error page
properties.Cancel = true;
//Edit the error message that will display on the error page
properties.ErrorMessage = "Error looking for booking conflicts: " + ex.Message;

Hi there,
Please verify the internal name of column which you have hardcoded in the code i.e
string start_internal = collItems.List.Fields["Start Time"].InternalName;
string end_internal = collItems.List.Fields["End Time"].InternalName;
I have used the Room reservation template from MSDN which has provided by MS under the code name of "Fantastic 40" along with below James Finn article.
http://www.codeproject.com/Articles/30983/SharePoint-Reservations
It worked for me for reservation.

Duration Field IN Calendar List of Sharepoint

Similar Messages

Maybe you are looking for