c#写入本地环境变量

public void onScanEnviroment()
{
//--------------遍历所有信息
Console.WriteLine("GetEnvironmentVariables: ");
// IDictionary environmentVariables = Environment.GetEnvironmentVariables();
int count = 0;
// foreach (DictionaryEntry de in environmentVariables)
// {
// Console.WriteLine(" {0} = {1}", de.Key, de.Value);
// count = count + 1;
// using (StreamWriter sw = new StreamWriter("D:\EnvironmentList11111.txt"))
// {
// //--------------遍历所有信息

        //     }
        // }

         Console.WriteLine("GetEnvironmentVariables: ");
        IDictionary environmentVariables = Environment.GetEnvironmentVariables();
        // StreamWriter sw = new StreamWriter(fs);    
        foreach (DictionaryEntry de in environmentVariables)
        {
            Console.WriteLine("  {0} = {1}", de.Key, de.Value);
            String tempStr = String.Format("{0} = {1}\n", de.Key, de.Value);
            System.IO.File.AppendAllText(@"D:\\Environment11111.txt",tempStr);
            Console.WriteLine("写入成功");
            // Console.ReadKey();
        }
    }