I'm trying to make a program that would open new Outlook 2007 message.
I've referenced from COM tab Microsoft Outlook 12.0 ObjectLibrary.
These items showed up in references in VS:
Microsoft.Office.Core
Microsoft.Office.Inerop.Outlook
Now I try to invoke following code:
var _outlookInstance = new Microsoft.Office.Interop.Outlook.Application();
var _message = (OutlookApp.MailItem)_outlookInstance.CreateItem(OutlookApp.OlItemType.olMailItem);
where OutlookApp==Microsoft.Office.Interop.Outlook namespace.
While invoking second line of listing I keep getting this exception: (InvalidCastException)
Unable to cast COM object of type 'Microsoft.Office.Interop.Outlook.ApplicationClass' to interface type 'Microsoft.Office.Interop.Outlook._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{00063001-0000-0000-C000-000000000046}' failed due to the following error: Library unregistered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)).
That code worked well for Outlook 2003 on my other station.
I'll be grateful for any ideas how to solve it.