string select_case="SELECT * FROM case";
SqlConnection conn=new SqlConnection("server=127.0.0.1;database=tunnel;uid=sa;pwd=");
SqlDataAdapter da=new SqlDataAdapter(select_case,conn);

conn.Open();
DataSet ds=new DataSet();
da.Fill (ds,"caseResult");
conn.Close();编译通过,但运行时说关键字case 旁有语法错误,怎么回事啊