Facing Issue while opening .OST file in C#

aabhi · November 15th, 2018, 12:46 AM

Iâm working as a freelancer and creating different types of projects on C# language. From last few days, Iâm handling a project in which I have to open .OST file in C#. For doing such things, I have written the following code:

Code:

private void CreateInboxSubFolder(Outlook.Application OutlookApp)
{
      Outlook.NameSpace nameSpace = OutlookApp.GetNamespace("MAPI");
      Outlook.MAPIFolder folderInbox = nameSpace.GetDefaultFolder(
            Outlook.OlDefaultFolders.olFolderInbox);
      Outlook.Folders inboxFolders = folderInbox.Folders;
      Outlook.MAPIFolder subfolderInbox = null;
      try
      {
            subfolderInbox = inboxFolders.Add("InboxSubfolder", 
                 Outlook.OlDefaultFolders.olFolderInbox);
      }
      catch (COMException exception)
      {
            if (exception.ErrorCode == -2147352567)
                 //  Cannot create the folder.
                 System.Windows.Forms.MessageBox.Show(exception.Message);
       }
       if (subfolderInbox != null) Marshal.ReleaseComObject(subfolderInbox);
       if (inboxFolders != null) Marshal.ReleaseComObject(inboxFolders);
       if (folderInbox != null) Marshal.ReleaseComObject(folderInbox);
       if (nameSpace != null) Marshal.ReleaseComObject(nameSpace);
}

After executing these code on C# programming, I get an error message ErrorCode=-2147352567. To sort out this error I have searched over p2p Wrox forum and found no thread.
http://p2p.wrox.com/c-c-4/

So, I have searched over the Internet and found few useful resources. But Iâm confused which will fix my programming error.
https://community.hortonworks.com/qu...-language.html
https://www.nopcommerce.com/boards/t...ing-c-net.aspx
https://www.stellarinfo.com/convert-ost-to-pst.php
https://codepad.co/snippet/dyjIh4PQ

Please guide.

tonymufford@gmail.com · November 20th, 2018, 01:43 AM

Quote:

Originally Posted by aabhi

Iâm working as a freelancer and creating different types of projects on C# language. From last few days, Iâm handling a project in which I have to open .OST file in C#. For doing such things, I have written the following code:

Code:

private void CreateInboxSubFolder(Outlook.Application OutlookApp)
{
      Outlook.NameSpace nameSpace = OutlookApp.GetNamespace("MAPI");
      Outlook.MAPIFolder folderInbox = nameSpace.GetDefaultFolder(
            Outlook.OlDefaultFolders.olFolderInbox);
      Outlook.Folders inboxFolders = folderInbox.Folders;
      Outlook.MAPIFolder subfolderInbox = null;
      try
      {
            subfolderInbox = inboxFolders.Add("InboxSubfolder", 
                 Outlook.OlDefaultFolders.olFolderInbox);
      }
      catch (COMException exception)
      {
            if (exception.ErrorCode == -2147352567)
                 //  Cannot create the folder.
                 System.Windows.Forms.MessageBox.Show(exception.Message);
       }
       if (subfolderInbox != null) Marshal.ReleaseComObject(subfolderInbox);
       if (inboxFolders != null) Marshal.ReleaseComObject(inboxFolders);
       if (folderInbox != null) Marshal.ReleaseComObject(folderInbox);
       if (nameSpace != null) Marshal.ReleaseComObject(nameSpace);
}

After executing these code on C# programming, I get an error message ErrorCode=-2147352567. To sort out this error I have searched over p2p Wrox forum and found no thread.
http://p2p.wrox.com/c-c-4/

So, I have searched over the Internet and found few useful resources. But Iâm confused which will fix my programming error.
https://community.hortonworks.com/qu...-language.html
https://www.nopcommerce.com/boards/t...ing-c-net.aspx
https://www.stellarinfo.com/convert-ost-to-pst.php
https://codepad.co/snippet/dyjIh4PQ

Please guide.

The error is on which line exactly?. You could try to exclude NULL values and see if that works. For reference check out :

https://stackoverflow.com/questions/...020009-subform
https://www.add-in-express.com/creat...-a-new-folder/
https://social.msdn.microsoft.com/Fo...=csharpgeneral
https://www.edbmails.com/pages/ost-t...st-to-pst.html
https://www.access-programmers.co.uk...d.php?t=293137

chrisgardner750 · March 23rd, 2019, 03:23 AM

I understand that you are having trouble while opening .OST file in C#. In this case, you can take the help of any third party software. You can try Microsoft OST to PST converter by KDETools. With the help of this software, you can easily open OST file in just a few steps.

mattgiandalia · June 3rd, 2019, 08:37 AM

You can directly download wonderful OST to PST Converter which powerfully works for recovery of Outlook OST file and converts OST to PST without changing any formatting and structure of OST folders. Without creating any problem, you are capable to export all size OST files.

For more info: http://www.ost.topstconverter.com/