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;        }    }}