Error creating Outlook Task in C#

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Dear All,
I am developing a windows application which has this feature:
When some button is pressed, it will create a outlook task.
This my code in C#:

C#

using Microsoft.Office.Core;
using Microsoft.Office.Interop.Outlook;

private void button1_Click(object sender, EventArgs e)
{
    TaskItem OutlookTask = new TaskItem();
    OutlookTask.Actions.Application.CreateItem(OlItemType.olTaskItem);
    OutlookTask.Assign();
    OutlookTask.Recipients.Add("email@domain.ps");
    OutlookTask.Subject = "Testing The Tasks from my application";
    OutlookTask.Body = "Body: Testing The Tasks from my application";
    OutlookTask.DueDate = DateTime.Today;
    OutlookTask.ReminderTime = OutlookTask.DueDate;
    OutlookTask.Save();
}

This is the error I get:

Retrieving the COM class factory for component with CLSID {00061032-0000-0000-C000-000000000046} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Note: I added the reference to use Outlook which is: Microsoft Outlook 14.0 Object Library. I am using VS 2010, and Outlook 2010

Does anybody have an idea what can cause this?

Thanks in advance!

Posted 4-Jan-11 4:25am

obarahmeh

Updated 4-Jan-11 4:33am

Manfred Rudolf Bihy

v5

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Manfred Rudolf Bihy 4-Jan-11 10:34am

Edit: Grammar and spelling, added Outlook and Interop tags, code tags and indentation.

4 solutions

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Manfred Rudolf Bihy · Answer 1 · 2011-01-04T04:44:00

Solution 1

Is MS Office Outlook installed on the machine running the application?
You could also have an issue of 32bit MS Office vs a 64bit machine.

Regards,
Manfred

Posted 4-Jan-11 4:44am

Manfred Rudolf Bihy

Sandeep Mewara · Answer 2 · 2011-01-04T05:57:00

Solution 2

One reason is already suggested to you by Manfred, other could be if Microsoft Outlook is not properly installed and configured on the system. Basically you should be able to run Outlook outside of your application too.

Support links: Link 1[^]
Link 2[^]

Posted 4-Jan-11 5:57am

Sandeep Mewara

obarahmeh · Answer 3 · 2011-01-04T19:39:00

Solution 3

Good morning,
Outlook is installed on the running machine.
My machine is 64bit.
I've changed the CPU into X86 in VS 2010, but the problem still appear.
The error is fired exactly in the following line:

TaskItem OutlookTask = new TaskItem();

and thank you for your replies.

Regards

Posted 4-Jan-11 19:39pm

obarahmeh

Comments

[no name] 5-Jan-11 8:59am

Don't add an answer. You should modify your original question to provide additional information

Not Active · Answer 4 · 2011-01-05T02:20:00

Solution 4

You can't create a Task using new

TaskItem OutlookTask = (TaskItem)Application.CreateItem(OlItemType.olTaskItem);

or

TaskItem OutlookTask = tasks.Items.add(OlItemType.olTaskItem);

Posted 5-Jan-11 2:20am

Not Active

Comments

obarahmeh 5-Jan-11 8:40am

There is an error for your sentences:
TaskItem OutlookTask = (TaskItem)Application.CreateItem(OlItemType.olTaskItem);
Application is an ambiguous between Outlook.Application and Window.forms.Application .

and the second sentence:
TaskItem OutlookTask = tasks.Items.add(OlItemType.olTaskItem);
shows an error in tasks which does not exist in this context

Is there any missing, any references??

I've referenced the following:
using Microsoft.Office.Core;
using Microsoft.Office.Interop.Outlook;

[no name] 5-Jan-11 8:58am

You need to do some work on your own. The code was an example and MUST be configured appropriately for YOUR application.

If you want code written for you then contact me to discuss rates.