How to check if my com add-in already installed in this computer? Yael 5/28/2007 12:03:02 PM From C# code: I have com add-in to outlook 2003, code in c#. I want to check if this add-in already installed in this computer. private void isOutlook() { Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\\microsoft\\windows\\currentversion\\app paths\\OUTLOOK.EXE"); string path = (string)key.GetValue("Path"); if( path != null)// if have outlook do the installing com add-in //if this com add-in not yet installed System.Diagnostics.Process.Start("C:\\MatarotToolbar\\MatarotToolbarSetup\\Debug\\Setup.Exe"); }

Re: How to check if my com add-in already installed in this computer? "Dmitry Streblechenko" <dmitry[ at ]dimastr.com> 5/29/2007 5:53:36 PM Check if your add-in is in SOFTWARE\Microsoft\Office\Outlook\Addins in either HKLM or HKCU. Dmitry Streblechenko (MVP) http://www.dimastr.com/ OutlookSpy - Outlook, CDO and MAPI Developer Tool "Yael" <Yael[ at ]discussions.microsoft.com> wrote in message news:E58C933E-F976-4902-AAA7-6D9369A6FFDB[ at ]microsoft.com... [Quoted Text] > From C# code: > > I have com add-in to outlook 2003, code in c#. > I want to check if this add-in already installed in this computer. > > private void isOutlook() > { > Microsoft.Win32.RegistryKey key = > Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\\microsoft\\windows\\currentversion\\app > paths\\OUTLOOK.EXE"); > string path = (string)key.GetValue("Path"); if( path != null)// if have > outlook do the installing com add-in > //if this com add-in not yet installed > > System.Diagnostics.Process.Start("C:\\MatarotToolbar\\MatarotToolbarSetup\\Debug\\Setup.Exe"); > } > >