C#判断某个软件是否已安装实现代码分享

private void button1_Click(object sender, EventArgs e)  
{  
  if (checkAdobeReader() == true)  
  {  
    MessageBox.Show("有安�b Adobe Reader ");  
  }  
  else 
  {  
    MessageBox.Show("�]有安�b Adobe Reader ");  
  }  
}  
/// 
  
/// �_�J是否有安�b Adobe Reader  
/// 
  
/// true: 有安�b, false:�]有安�b  
private bool checkAdobeReader()  
{  
  Microsoft.Win32.RegistryKey uninstallNode = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall");  
  foreach (string subKeyName in uninstallNode.GetSubKeyNames())  
  {  
    Microsoft.Win32.RegistryKey subKey = uninstallNode.OpenSubKey(subKeyName);  
    object displayName = subKey.GetValue("DisplayName");  
    if (displayName != null)  
    {  
      if (displayName.ToString().Contains("Adobe Reader"))  
      {  
        return true;  
        // MessageBox.Show(displayName.ToString());  
      }  
    }  
  }  
  return false;  
}