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How to Add a Lotus Notes Calendar Entry with C#

, 9 Jan 2011
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How to Add a Lotus Notes Calendar Entry with C#

The following code will show you how to add an entry in a Lotus Notes Calendar with C#

//This DLL you've got to add under Projekt-> Add Reference --> COM Tab --> Lotus Domino Objects
//Standard Path for this DLL is: "C:\Program Files\Notes\domobj.tlb"
using Domino;   //domobj.tlb*
    //Befor you start, you have to check 2 things
    //1.) Lotus Notes has to run when you start this application
    //2.)The files "notes.ini" and "" 
    //("user" stands for your username) have to be in the folder 
    // "C:\Program Files\Notes" or "C:\Program Files\IBM\Notes" 
    //First, create a new Lotus Notes Session Object
    Domino.NotesSession LNSession = new Domino.NotesSession();
    //Next add a Database and a Document Object (not new)
    Domino.NotesDatabase LNDatabase;
    Domino.NotesDocument LNDocument;
    //Initialize your Session with your Password
    //Connect to your Notes Server and the path of your 
    //.nsf File (in my case its in a subfolder 'mail').
    LNDatabase = LNSession.GetDatabase("Notes-Server", "mail\\user.nsf", false);
    //Create an in memory document in the server database
    LNDocument = LNDatabase.CreateDocument();
    //-------Assign Field Values-------
    //Define Start&End Date+Time of your appointment
    //Year, Month, Day, Hour, Minute and Second
    System.DateTime StartDate = new DateTime(2008, 3, 19, 8, 2, 0);
    System.DateTime EndDate = new DateTime(2008, 3, 19, 8, 5, 0);
    //This Defines that it is an Calendar Entry
    LNDocument.ReplaceItemValue("Form", "Appointment");
    //Type of the appointment, means:
    LNDocument.ReplaceItemValue("AppointmentType", "0");
    //0 = Date, Appointment           
    //1 = Anniversary
    //2 = All Day Event (Do Not Set Time Here!)
    //3 = Meeting
    //4 = Reminder
    //5 = Date (Special, experimental!)    
    // Title of your entry
    LNDocument.ReplaceItemValue("Subject", "hello world");
    // Set Confidential Level (Public=1 or Private=0) 
    //Add Start&End Time of your event
    LNDocument.ReplaceItemValue("CALENDARDATETIME", StartDate);
    LNDocument.ReplaceItemValue("StartDateTime", StartDate);
    LNDocument.ReplaceItemValue("EndDateTime", EndDate);
    LNDocument.ReplaceItemValue("StartDate", StartDate);
    LNDocument.ReplaceItemValue("MeetingType", "1");
    //Infos in The Body
    LNDocument.ReplaceItemValue("Body", "Body Text Body Text ...");
    //Add an alarm to your appointment
    LNDocument.ReplaceItemValue("$Alarm", 1);
    LNDocument.ReplaceItemValue("$AlarmDescription", "hello world (alarm)");
    LNDocument.ReplaceItemValue("$AlarmMemoOptions", "" );
    //5 = Time (in minutes) before alarm goes on
    LNDocument.ReplaceItemValue("$AlarmOffset", 5);
    LNDocument.ReplaceItemValue("$AlarmSound", "tada");
    LNDocument.ReplaceItemValue("$AlarmUnit", "M");
    //This saves your Document in the Notes Calendar
    LNDocument.ComputeWithForm(true, false);
    LNDocument.Save(true, false, false);
    //On success, you'll see an info message;
    MessageBox.Show("Calendar Entry Successfully Added!", "Info", 
        MessageBoxButtons.OK, MessageBoxIcon.Information);
catch (Exception e1)
    //On error you'll see an error message


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Comments and Discussions

QuestionLotus Calendar Entry with C# ERRROR Object reference not set to an instance of an object PinmemberJuan Eduardo Galvez Bustamante7-May-13 5:27 
GeneralThis adds the event to the calendar. However, the alarm doe... PinmemberChris Goedde22-Nov-11 11:03 
GeneralHow can i add attendees to calendar? i tried adding it but i... PinmemberHaseena879-Nov-11 21:01 
GeneralReason for my vote of 5 Because using Lotus Notes sucks, you... Pinmembermeaningoflights9-Dec-10 20:13 
GeneralI gladly shared it ;). I searched for this solution about 2 ... PinmemberMinuert30-Nov-10 2:32 
GeneralThank you for sharing this with us even though Lotus Notes s... PinmemberSlacker00729-Nov-10 5:07 

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