Sqlserver数据库中SqlDataAdapter.Fill的简单用法

            string ConnStr = "Sqlserver数据库连接字符串";
            using (SqlConnection conn = new SqlConnection(ConnStr))
            {
                conn.Open();

                string sTableName = "dt";
                SqlCommand sqlCommand = new SqlCommand();
                sqlCommand.CommandText = sqlstr;
                sqlCommand.Connection = conn;
                ///实例化一个 DataSet
                DataSet ds = new DataSet();
                /////DataAdapter填充DataSet
                SqlDataAdapter sDataAdapter = new SqlDataAdapter(sqlCommand);

                ///1. 不指定表名称填充
                sDataAdapter.Fill(ds);
                //调用方式
                DataTable dataTableWithNoName = ds.Tables[0];

                ///2. 指定表名称填充
                sDataAdapter.Fill(ds, sTableName);
                ///调用方式
                DataTable dataTableWithName = ds.Tables[sTableName];
            }