访问C中的静态方法#

我有这门课:

public static class CsvWriter
    {
       private static StreamWriter _writer = new StreamWriter(@"c:\temp\ssis_list.csv");

       public static  StreamWriter Writer 
       {
          get { return _writer; }
       }
    }

这是从另一个类调用的

 class Program
  {
     ...
     static void GetConnections(string path,string pkgname,string server)
        {

          _writer.WriteLine(myLine);
        }
   }

哪个有这个错误

The name '_writer' does not exist in the current context    

我怎么修这个?