WM DBHelp类

Question

通过VS2008新建的智能设备项目，操作SQL2000/2005的数据库，如果全部用SQL 语句是可以的，但是我有很多的复杂关系需要通过存储过程来实现，可是我发现Windows Mobile里面连Parameters.AddRange这个方法都没有，哪位朋友有这方面的操作类请发一个给我，类似下面的这一段代码，下面的代码是CS和BS里面用到的，感谢！ using System.Net.Mime;using DBUtility;using System.Windows.Forms;using System.Data.SqlClient;using System.Data;using System; namespace DAL{    public class DALHelper    {                private SqlConnection connection;        public SqlConnection Connection        {            get            {                string connectionString = @"server=.;database=DemoDB;uid=sa;pwd=123456";                                if (connection == null)                {                    connection = new SqlConnection(connectionString);                    connection.Open();                }                else if (connection.State == System.Data.ConnectionState.Closed)                {                    connection.Open();                }                else if (connection.State == System.Data.ConnectionState.Broken)                {                    connection.Close();                    connection.Open();                }                return connection;            }        }         public int ExecuteCommand(string safeSql)        {            SqlCommand cmd = new SqlCommand(safeSql, Connection);            int result = cmd.ExecuteNonQuery();            return result;        }         public int ExecuteCommand(string sql, params SqlParameter[] values)        {            SqlCommand cmd = new SqlCommand(sql, Connection);            cmd.CommandType = CommandType.StoredProcedure;            cmd.Parameters.AddRange(values);            return cmd.ExecuteNonQuery();        }               public string GetScalar(string safeSql)        {            SqlCommand cmd = new SqlCommand(safeSql, Connection);            string result = cmd.ExecuteScalar().ToString();            return result;        }         public string GetScalar(string sql, params SqlParameter[] values)        {            SqlCommand cmd = new SqlCommand(sql, Connection);            cmd.CommandType = CommandType.StoredProcedure;            cmd.Parameters.AddRange(values);            string result = cmd.ExecuteScalar().ToString();            return result;        }         public SqlDataReader GetReader(string safeSql)        {            SqlCommand cmd = new SqlCommand(safeSql, Connection);            SqlDataReader reader = cmd.ExecuteReader();            return reader;        }         public SqlDataReader GetReader(string sql, params SqlParameter[] values)        {            SqlCommand cmd = new SqlCommand(sql, Connection);            cmd.CommandType = CommandType.StoredProcedure;            cmd.Parameters.AddRange(values);            SqlDataReader reader = cmd.ExecuteReader();            return reader;        }         public DataTable GetDataSet(string safeSql)        {            DataSet ds = new DataSet();            SqlCommand cmd = new SqlCommand(safeSql, Connection);            SqlDataAdapter da = new SqlDataAdapter(cmd);            da.Fill(ds);            return ds.Tables[0];        }         public DataTable GetDataSet(string sql, params SqlParameter[] values)        {            DataSet ds = new DataSet();            SqlCommand cmd = new SqlCommand(sql, Connection);            cmd.CommandType = CommandType.StoredProcedure;            cmd.Parameters.AddRange(values);            SqlDataAdapter da = new SqlDataAdapter(cmd);            da.Fill(ds);            return ds.Tables[0];        }         /// <summary>        /// 返回一个数据集，从里面取出不同的表         /// </summary>        /// <param name="sql"></param>        /// <param name="values"></param>        /// <returns></returns>        public DataSet GetDataSet3(string sql, params SqlParameter[] values)        {            DataSet ds = new DataSet();            SqlCommand cmd = new SqlCommand(sql, Connection);            cmd.CommandType = CommandType.StoredProcedure;            cmd.Parameters.AddRange(values);            SqlDataAdapter da = new SqlDataAdapter(cmd);            da.Fill(ds);            return ds;        }        }}

Answer 1

你看下 这个对不

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace SQL.MySchoolDAL
{
   public static class DBHelper
    {
        private static string connectionString =
            ConfigurationManager.ConnectionStrings["conString"].ToString();

        private static SqlConnection connection;
        public static SqlConnection Connection
        {
            get
            {
                if (connection == null || connection.ConnectionString=="")
                {
                    connection = new SqlConnection(connectionString);
                    connection.Open();
                }
                else if (connection.State == ConnectionState.Closed)
                {
                    connection.Open();
                }
                else if (connection.State == ConnectionState.Broken)
                {
                    connection.Close();
                    connection.Open();
                }
                return connection;
            }
        }

        public static int ExecuteCommand(string sql, CommandType commandType, params SqlParameter[] values)
        {
            SqlCommand cmd = new SqlCommand(sql, Connection);
            cmd.Parameters.AddRange(values);
            cmd.CommandType = commandType;
            int result = cmd.ExecuteNonQuery();
            return result;
        }

        public static int GetScalar(string sql, CommandType commandType, params SqlParameter[] values)
        {
            SqlCommand cmd = new SqlCommand(sql, Connection);
            cmd.Parameters.AddRange(values);
            cmd.CommandType = commandType;
            int result = Convert.ToInt32(cmd.ExecuteScalar());
            return result;
        }

        public static SqlDataReader GetReader(string sql, CommandType commandType, params SqlParameter[] values)
        {
            SqlCommand cmd = new SqlCommand(sql, Connection);
            cmd.Parameters.AddRange(values);
            cmd.CommandType = commandType;
            SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
            return reader;
        }

       public static DataSet GetDataSet(string sql, CommandType commandType, params SqlParameter[] values)
        {
            DataSet ds = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter(sql, Connection);
            da.SelectCommand.Parameters.AddRange(values);
            da.SelectCommand.CommandType = commandType;
            da.Fill(ds);
            return ds;
        }
    }
}