/// <summary> 

	/// 安装的excel的版本,0为没有安装,大于1说明安装了多个. 

	/// </summary> 

	/// <returns></returns> 

	public static List<string> ExcelVersion() 

	{ 

	List<string> list = new List<string>(); 

	List<string> lisemp = new List<string>(); 

	List<string> listvison = new List<string>(); 

	RegistryKey rk = Registry.LocalMachine; 

	RegistryKey akey = rk.OpenSubKey(@"SOFTWARE\\Microsoft\\Office"); 

	RegistryKey csk; 

	string str; 

	Hashtable hash = new Hashtable(); 

	string[] ss = akey.GetSubKeyNames(); 

	foreach (string s in ss) 

	{ 

	string strem = @"SOFTWARE\\Microsoft\\Office" + @"\\" + s; 

	csk = rk.OpenSubKey(strem); 

	string[] csd = csk.GetSubKeyNames(); 

	foreach (string sk in csd) 

	{ 

	if (sk == "Excel") 

	{ 

	str = strem + @"\\" + "Excel"; 

	list.Add(str); 

	lisemp.Add(s); 

	} 

	} 

	} 

	if (list != null) 

	{ 

	for (int index = 0; index < list.Count; index++) 

	{ 

	list[index] = list[index] + @"\\InstallRoot\\"; 

	RegistryKey f = rk.OpenSubKey(list[index]); 

	if (f != null) 

	{ 

	listvison.Add(lisemp[index]); 

	} 

	} 

	} 

	return listvison; 

	}