Hello all,

I have a problem with the ".LockFile" Method because the file is open in SolidWorks. The error code is 0x8004020B.
In my code, I want to display a messagebox that does not disappear until the drawing has been closed by the user. How can I do this?

Here is my code:

...
            ...
            string newComment = serialNbrValueValue + " | " + CommentVal;
            IEdmEnumeratorVariable5 varEnum3 = default(IEdmEnumeratorVariable5);
            DialogResult dialogResult = MessageBox.Show("Die Datei " + File.Name + " ist geöffnet und muss unbedingt geschlossen werden!", "Datei " + File.Name + " schließen", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1);
            if (dialogResult == DialogResult.OK)
            {
                try
                {
                    File.LockFile(ppoRetParentFolder.ID, 0, (int)EdmLockFlag.EdmLock_Simple);
                }
                catch (COMException exp)
                {
                    string errorName, errorDesc;
                    vault.GetErrorString(exp.ErrorCode, out errorName, out errorDesc);
                    vault.MsgBox(0, errorDesc, EdmMBoxType.EdmMbt_OKOnly, errorName);
                }
                ...

Any help would be appreciated.

Thanks, Mario