试试这个：

Hi,

try this:

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)
    System.Diagnostics.Process.Start("OUTLOOK.EXE");
  else
    MessageBox.Show("There is no Outlook in this computer!", "SystemError", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}

由于microsoft outlook故障排除，您可以打开ms outlook文件



应用这篇文章 http://www.outlooktroubleshooting.oemailrecovery.com

You may open ms outlook files owing to microsoft outlook troubleshooting

Apply this article http://www.outlooktroubleshooting.oemailrecovery.com