Oracle數據庫操作類及連接方法

本文轉載自查看原文 2014-04-10 20:15 10659 MSSQL&Oracle&MySQL

創建DataBaseAccess引用庫下面包括DBConnectionString.cs，DBType.cs ，SysName.cs 三個類

DBConnectionString：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseAccess
{
    /// <summary>
    /// 數據庫類型訪問連接
    /// </summary>
    public class DBConnectionString
    {
        public static DBType GetDbType()
        {
            return DBType.Oracle;
        }

        public static string getConnString(SysName sysname)
        {
            if (GetDbType() == DBType.Oracle)
            {
                switch (sysname)
                {
                    case SysName.TESTDB:
                        return "Data Source=TESTDB;Persist Security Info=True;User ID=scott;Password=tiger;Unicode=True";
                    case SysName.CMS:
                        return "Data Source=服務器數據庫名;Persist Security Info=True;User ID=CMS;Password=CMS;Unicode=True";
                    case SysName.ERP:
                        return "Data Source=服務器數據庫名;Persist Security Info=True;User ID=ERP;Password=ERP;Unicode=True";
                    case SysName.ORCL:
                        return "Data Source=orcl;Persist Security Info=True;User ID=ORCL;Password=123;Unicode=True";
                   
                }
                return string.Empty;
            }
            return string.Empty;
        }
    }
}

View Code

DBType：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseAccess
{
    /// <summary>
    /// 數據庫類型枚舉
    /// </summary>
   public enum DBType
    {
        Oracle = 0,
        Access = 1,
       Sqlserver=2
    }
}

SysName：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseAccess
{
    
    /// <summary>
    /// 訪問系統對應數據庫名稱
    /// </summary>
    public enum SysName
    {
        TESTDB=1,
        CMS=2,
        ERP=3,
        ORCL=4
    }
}

View Code

DataSys-Common文件夾下包括DBHelper.cs，OracleHelper.cs，QueryParam.cs

DBHelper：

using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Linq;
using System.Web;
using DataBaseAccess;
using System.Data.OracleClient;
namespace LoginWebApp.Common
{
     //abstract 抽象類 修飾符指示所修飾的內容缺少實現或未完全實現。 
    //abstract 修飾符可用於類、方法、屬性、索引器和事件。 
    //在類聲明中使用 abstract 修飾符以指示某個類只能是其他類的基類。
    //標記為抽象或包含在抽象類中的成員必須通過從抽象類派生的類來實現。

    public abstract class DBHelper
    {
        public static DbConnection GetDbConnection(SysName dbname)
        {
            return new OracleConnection(DBConnectionString.getConnString(dbname));
        }
    }
}

View Code

OracleHelper：

using DataBaseAccess;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.OracleClient;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;

namespace LoginWebApp.Common
{
    /// <summary>
    //abstract 抽象類 修飾符指示所修飾的內容缺少實現或未完全實現。 
    //abstract 修飾符可用於類、方法、屬性、索引器和事件。 
    //在類聲明中使用 abstract 修飾符以指示某個類只能是其他類的基類。
    //標記為抽象或包含在抽象類中的成員必須通過從抽象類派生的類來實現。
    /// A helper class used to execute queries against an Oracle database
    /// </summary>
    public abstract class OracleHelper
    {
        //Create a hashtable for the parameter cached
        private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());

        /// <summary>
        /// 返回DataTable,如果無commandParameters參數，可傳入null
        /// </summary>
        /// <param name="cmdType"></param>
        /// <param name="cmdText"></param>
        /// <param name="commandParameters"></param>
        /// <returns></returns>
        public static DataTable ExecuteDataTable(CommandType cmdType, string cmdText, SysName sysname, params OracleParameter[] commandParameters)
        {
            DataTable dt = new DataTable();
            OracleCommand cmd = new OracleCommand();
            using (OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(sysname)))
            {
                PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
                OracleDataAdapter da = new OracleDataAdapter(cmd);
                da.Fill(dt);
                cmd.Parameters.Clear();
                cmd.Dispose();
                return dt;
            }

        }

        /// <summary>  
        /// 執行數據庫查詢操作,返回DataSet類型的結果集  
        /// </summary>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param>  
        /// <returns>當前查詢操作返回的DataSet類型的結果集</returns> 
        public static DataSet ExecuteDataSet(CommandType cmdType, string cmdText, SysName sysname, params OracleParameter[] commandParameters)
        {
            DataSet ds = new DataSet();
            OracleCommand cmd = new OracleCommand();
            using (OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(sysname)))
            {
                try
                {
                    PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
                    OracleDataAdapter da = new OracleDataAdapter(cmd);
                    da.Fill(ds);
                    cmd.Parameters.Clear();

                }
                catch
                {
                    throw;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                    connection.Dispose();

                }
            }
            return ds;
        }

        /// <summary>
        /// 公用查詢方法，分頁查詢數據
        /// </summary>
        /// <param name="qp"></param>
        /// <param name="recordCount"></param>
        /// <returns></returns>
        public static DataTable ExecuteDataTable(QueryParam qp, out int recordCount, SysName sysname)
        {
            DataTable dt = new DataTable();
            using (OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(sysname)))
            {
                StringBuilder sb = new StringBuilder();
                int TotalRecordForPageIndex = qp.PageIndex * qp.PageSize;
                int FirstRecordForPageIndex = (qp.PageIndex - 1) * qp.PageSize;
                string OrderBy;
                if (qp.OrderType == 1)
                {
                    OrderBy = " Order by " + qp.Orderfld.Replace(",", " desc,") + " desc ";
                }
                else
                {
                    OrderBy = " Order by " + qp.Orderfld.Replace(",", " asc,") + " asc ";
                }
                sb.AppendFormat("SELECT * FROM (SELECT A.*, ROWNUM RN FROM (SELECT * FROM {0} {1} {2}) A WHERE ROWNUM <= {3})WHERE RN > {4} ", qp.TableName.ToUpper(), qp.Where, OrderBy, TotalRecordForPageIndex, FirstRecordForPageIndex);
                OracleCommand cmd = new OracleCommand(sb.ToString(), connection);
                OracleDataAdapter da = new OracleDataAdapter(cmd);
                da.Fill(dt);
                connection.Open();
                cmd.Dispose();
                cmd = new OracleCommand();
                cmd.Connection = connection;
                cmd.CommandText = string.Format("SELECT Count(1) From {0} {1}", qp.TableName, qp.Where);
                recordCount = Convert.ToInt32(cmd.ExecuteScalar());
                cmd.Dispose();
                return dt;
            }
        }
        /// <summary>  
        /// 執行數據庫查詢操作,返回DataTable類型的結果集  
        /// </summary>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param>  
        /// <returns>當前查詢操作返回的DataTable類型的結果集</returns>  
        internal static DataTable ExecuteDataTable(string cmdText, SysName sysname, params OracleParameter[] commandParameters)
        {
            OracleCommand command = new OracleCommand();
            OracleConnection connection = new OracleConnection((DBConnectionString.getConnString(sysname)));
            DataTable table = null;

            try
            {
                PrepareCommand(command, connection, null, CommandType.Text, cmdText, commandParameters);
                OracleDataAdapter adapter = new OracleDataAdapter();
                adapter.SelectCommand = command;
                table = new DataTable();
                adapter.Fill(table);
                command.Parameters.Clear();
            }
            catch
            {
                throw;
            }
            finally
            {
                command.Dispose();
                connection.Close();
                connection.Dispose();
            }

            return table;
        }
        /// <summary>  
        /// 執行數據庫查詢操作,返回結果集中位於第一行第一列的Object類型的值  
        /// </summary>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param>  
        /// <returns>當前查詢操作返回的結果集中位於第一行第一列的Object類型的值</returns>
        public static object ExecuteScalar(CommandType cmdType, string cmdText, SysName sysname, params OracleParameter[] commandParameters)
        {
            OracleCommand cmd = new OracleCommand();
            object result = null;
            using (OracleConnection conn = new OracleConnection(DBConnectionString.getConnString(sysname)))
            {
                try
                {
                    PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
                    result = cmd.ExecuteScalar();
                    cmd.Parameters.Clear();


                }
                catch
                {
                    throw;
                }
                finally
                {
                    cmd.Dispose();
                    conn.Dispose();
                    conn.Close();
                }
            }
            return result;
        }
        ///    <summary>  
        ///    執行數據庫事務查詢操作,返回結果集中位於第一行第一列的Object類型的值  
        ///    </summary>  
        ///    <param name="transaction">一個已存在的數據庫事務對象</param>  
        ///    <param name="commandType">命令類型</param>  
        ///    <param name="commandText">Oracle存儲過程名稱或PL/SQL命令</param>  
        ///    <param name="commandParameters">命令參數集合</param>  
        ///    <returns>當前事務查詢操作返回的結果集中位於第一行第一列的Object類型的值</returns> 
        public static object ExecuteScalar(OracleTransaction transaction, CommandType cmdType, string cmdText, SysName sysname, params OracleParameter[] commandParameters)
        {
            if (transaction == null)
                throw new ArgumentNullException("當前數據庫事務不存在");
            OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(sysname));
            connection = transaction.Connection; //打開連接事物
            if (transaction != null && transaction.Connection == null)
                throw new ArgumentException("當前事務所在的數據庫連接不存在");

            // Create a    command    and    prepare    it for execution
            OracleCommand cmd = new OracleCommand();
            object result = null;
            try
            {
                PrepareCommand(cmd, transaction.Connection, transaction, cmdType, cmdText, commandParameters);

                // Execute the command & return    the    results
                result = cmd.ExecuteScalar();

                // Detach the SqlParameters    from the command object, so    they can be    used again
                cmd.Parameters.Clear();


            }
            catch
            {
                throw;
            }
            finally
            {
                transaction.Dispose();
                cmd.Dispose();
                transaction.Connection.Dispose();
                transaction.Connection.Close();
            }
            return result;
        }
        /// <summary>  
        /// 執行數據庫查詢操作,返回結果集中位於第一行第一列的Object類型的值  
        /// </summary>  
        /// <param name="connection">數據庫連接對象</param>  
        /// <param name="cmdType">Command類型</param>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param>  
        /// <returns>當前查詢操作返回的結果集中位於第一行第一列的Object類型的值</returns>  
        internal static object ExecuteScalar(SysName sysname, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters)
        {
            OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(sysname));
            if (connection == null) throw new ArgumentException("當前數據庫連接不存在");
            OracleCommand command = new OracleCommand();
            object result = null;

            try
            {
                PrepareCommand(command, connection, null, cmdType, cmdText, commandParameters);
                result = command.ExecuteScalar();
                command.Parameters.Clear();
            }
            catch
            {
                throw;
            }
            finally
            {
                command.Dispose();
                connection.Close();
                connection.Dispose();
            }

            return result;
        }

        /// <summary>  
        /// 執行數據庫查詢操作,返回受影響的行數  
        /// </summary>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param>  
        /// <returns>當前查詢操作影響的數據行數</returns> 
        public static int ExecuteNonQuery(CommandType commdType, string cmdText, SysName sysname, params OracleParameter[] commandParameters)
        {
            // Create a new Oracle command
            OracleCommand cmd = new OracleCommand();
            int result = 0;
            //Create a connection
            using (OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(sysname)))
            {
                try
                {
                    //Prepare the command
                    PrepareCommand(cmd, connection, null, commdType, cmdText, commandParameters);

                    //Execute the command
                    result = cmd.ExecuteNonQuery();
                    cmd.Parameters.Clear();
                }
                catch
                {
                    throw;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Dispose();
                    connection.Close();
                }
            }
            return result;
        }
        /// <summary>  
        /// 執行數據庫查詢操作,返回受影響的行數  
        /// </summary>  
        /// <param name="connection">Oracle數據庫連接對象</param>  
        /// <param name="cmdType">Command類型</param>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param>  
        /// <returns>當前查詢操作影響的數據行數</returns>  
        internal static int ExecuteNonQuery(SysName sysname, CommandType cmdType, string cmdText, params OracleParameter[] commandParameters)
        {
            OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(sysname));
            if (connection == null) throw new ArgumentNullException("當前數據庫連接不存在");
            OracleCommand command = new OracleCommand();
            int result = 0;

            try
            {
                PrepareCommand(command, connection, null, cmdType, cmdText, commandParameters);
                result = command.ExecuteNonQuery();
                command.Parameters.Clear();
            }
            catch
            {
                throw;
            }
            finally
            {
                command.Dispose();
                connection.Close();
                connection.Dispose();
            }

            return result;
        }

        /// <summary>  
        /// 執行數據庫事務查詢操作,返回受影響的行數  
        /// </summary>  
        /// <param name="trans">數據庫事務對象</param>  
        /// <param name="cmdType">Command類型</param>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param>  
        /// <returns>當前事務查詢操作影響的數據行數</returns> 
        public static int ExecuteNonQuery(OracleTransaction trans, CommandType cmdType, string cmdText, SysName sysname, params OracleParameter[] commandParameters)
        {
            OracleCommand cmd = new OracleCommand();
            int result = 0;
            try
            {
                //執行事務 連接事物
                PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);
                result = cmd.ExecuteNonQuery();
                cmd.Parameters.Clear();
            }
            catch
            {
                throw;
            }
            finally
            {
                trans.Dispose();
                cmd.Dispose();
                trans.Connection.Close();
                trans.Connection.Dispose();

            }
            return result;
        }



        /// <summary>  
        /// 執行數據庫查詢操作,返回OracleDataReader類型的內存結果集  
        /// </summary>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param>  
        /// <returns>當前查詢操作返回的OracleDataReader類型的內存結果集</returns>
        public static OracleDataReader ExecuteReader(CommandType cmdType, string cmdText, SysName sysname, params OracleParameter[] commandParameters)
        {

            //Create the command and connection
            OracleCommand cmd = new OracleCommand();
            OracleConnection conn = new OracleConnection(DBConnectionString.getConnString(sysname));
            OracleDataReader reader = null;
            try
            {
                //Prepare the command to execute
                PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);

                //Execute the query, stating that the connection should close when the resulting datareader has been read
                reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                cmd.Parameters.Clear();
                return reader;

            }
            catch
            {

                //If an error occurs close the connection as the reader will not be used and we expect it to close the connection
                cmd.Dispose();
                conn.Close();
                throw;
            }
        }


        /// <summary>
        /// Add a set of parameters to the cached
        /// </summary>
        /// <param name="cacheKey">Key value to look up the parameters</param>
        /// <param name="commandParameters">Actual parameters to cached</param>
        public static void CacheParameters(string cacheKey, params OracleParameter[] commandParameters)
        {
            parmCache[cacheKey] = commandParameters;
        }

        /// <summary>
        /// Fetch parameters from the cache
        /// </summary>
        /// <param name="cacheKey">Key to look up the parameters</param>
        /// <returns></returns>
        public static OracleParameter[] GetCachedParameters(string cacheKey)
        {
            OracleParameter[] cachedParms = (OracleParameter[])parmCache[cacheKey];

            if (cachedParms == null)
                return null;

            // If the parameters are in the cache
            OracleParameter[] clonedParms = new OracleParameter[cachedParms.Length];

            // return a copy of the parameters
            for (int i = 0, j = cachedParms.Length; i < j; i++)
                clonedParms[i] = (OracleParameter)((ICloneable)cachedParms[i]).Clone();

            return clonedParms;
        }

        /// <summary>  
        /// 執行數據庫命令前的准備工作  
        /// </summary>  
        /// <param name="command">Command對象</param>  
        /// <param name="connection">數據庫連接對象</param>  
        /// <param name="trans">事務對象</param>  
        /// <param name="cmdType">Command類型</param>  
        /// <param name="cmdText">Oracle存儲過程名稱或PL/SQL命令</param>  
        /// <param name="commandParameters">命令參數集合</param> 
        private static void PrepareCommand(OracleCommand cmd, OracleConnection conn, OracleTransaction trans, CommandType cmdType, string cmdText, OracleParameter[] commandParameters)
        {

            //Open the connection if required
            if (conn.State != ConnectionState.Open)
                conn.Open();

            //Set up the command
            cmd.Connection = conn;
            cmd.CommandText = cmdText;
            cmd.CommandType = cmdType;

            //Bind it to the transaction if it exists
            if (trans != null)
                cmd.Transaction = trans;

            // Bind the parameters passed in
            if (commandParameters != null)
            {
                foreach (OracleParameter parm in commandParameters)
                    cmd.Parameters.Add(parm);
            }
        }

        /// <summary>
        /// Converter to use boolean data type with Oracle
        /// </summary>
        /// <param name="value">Value to convert</param>
        /// <returns></returns>
        public static string OraBit(bool value)
        {
            if (value)
                return "Y";
            else
                return "N";
        }

        /// <summary>
        /// Converter to use boolean data type with Oracle
        /// </summary>
        /// <param name="value">Value to convert</param>
        /// <returns></returns>
        public static bool OraBool(string value)
        {
            if (value.Equals("Y"))
                return true;
            else
                return false;
        }

        /// <summary>  
        /// 將.NET日期時間類型轉化為Oracle兼容的日期時間格式字符串  
        /// </summary>  
        /// <param name="date">.NET日期時間類型對象</param>  
        /// <returns>Oracle兼容的日期時間格式字符串（如該字符串：TO_DATE('2014-04-10','YYYY-MM-DD')）</returns>  
        internal static string GetOracleDateFormat(DateTime date)
        {
            return "TO_DATE('" + date.ToString("yyyy-M-dd") + "','YYYY-MM-DD')";
        }

        /// <summary>  
        /// 將.NET日期時間類型轉化為Oracle兼容的日期格式字符串  
        /// </summary>  
        /// <param name="date">.NET日期時間類型對象</param>  
        /// <param name="format">Oracle日期時間類型格式化限定符</param>  
        /// <returns>Oracle兼容的日期時間格式字符串（如該字符串：TO_DATE('2014-04-10','YYYY-MM-DD')）</returns>  
        internal static string GetOracleDateFormat(DateTime date, string format)
        {
            if (format == null || format.Trim() == "") format = "YYYY-MM-DD";
            return "TO_DATE('" + date.ToString("yyyy-M-dd") + "','" + format + "')";
        }

        /// <summary>  
        /// 將指定的關鍵字處理為模糊查詢時的合法參數值  
        /// </summary>  
        /// <param name="source">待處理的查詢關鍵字</param>  
        /// <returns>過濾后的查詢關鍵字</returns>  
        internal static string HandleLikeKey(string source)
        {
            if (source == null || source.Trim() == "") return null;

            source = source.Replace("[", "[]]");
            source = source.Replace("_", "[_]");
            source = source.Replace("%", "[%]");

            return ("%" + source + "%");
        }

        /// <summary>  
        /// 將文本內容寫入到數據庫的CLOB字段中（不可用：報連接被關閉的異常）  
        /// </summary>  
        /// <param name="connectionString">數據庫連接字符串</param>  
        /// <param name="table">數據庫表名稱</param>  
        /// <param name="where">指定的WHERE條件語句</param>  
        /// <param name="clobField">CLOB字段的名稱</param>  
        /// <param name="content">要寫入的文本內容</param>  
        internal static void WriteCLOB(string table, string where, string clobField, SysName sysname, string content)
        {
            if (String.IsNullOrEmpty(DBConnectionString.getConnString(sysname)) || String.IsNullOrEmpty(table) || String.IsNullOrEmpty(clobField)) return;

            using (OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(sysname)))
            {
                OracleCommand command = null;

                try
                {
                    connection.Open();
                    command = connection.CreateCommand();
                    command.CommandText = "SELECT " + clobField + " FROM " + table + " WHERE " + where + " FOR UPDATE";
                    OracleDataReader reader = command.ExecuteReader();

                    if (reader != null && reader.HasRows)
                    {
                        reader.Read();
                        command.Transaction = command.Connection.BeginTransaction();

                        OracleLob lob = reader.GetOracleLob(0);
                        byte[] buffer = Encoding.Unicode.GetBytes(content);
                        if (lob != OracleLob.Null) lob.Erase();
                        lob.Write(buffer, 0, ((buffer.Length % 2 == 0) ? buffer.Length : (buffer.Length - 1)));

                        command.Transaction.Commit();
                        reader.Close();
                    }
                }
                catch
                {
                    command.Transaction.Rollback();
                    throw;
                }
                finally
                {
                    command.Dispose();
                    connection.Close();
                    connection.Dispose();
                }
            }
        }

        /// <summary>  
        /// 從數據庫中讀取CLOB字段的內容並進行輸出  
        /// </summary>  
        /// <param name="connectionString">數據庫連接字符串</param>  
        /// <param name="table">數據庫表名稱</param>  
        /// <param name="where">指定的WHERE條件語句</param>  
        /// <param name="clobField">CLOB字段的名稱</param>  
        /// <param name="output">保存內容輸出的字符串變量</param>  
        internal static void ReadCLOB(SysName dbname, string table, string where, string clobField, ref string output)
        {
            if (String.IsNullOrEmpty(DBConnectionString.getConnString(dbname)) || String.IsNullOrEmpty(table) || String.IsNullOrEmpty(clobField)) return;

            using (OracleConnection connection = new OracleConnection(DBConnectionString.getConnString(dbname)))
            {
                OracleCommand command = null;
                StreamReader stream = null;

                try
                {
                    connection.Open();
                    command = connection.CreateCommand();
                    command.CommandText = "SELECT " + clobField + " FROM " + table + " WHERE " + where;
                    OracleDataReader reader = command.ExecuteReader();

                    if (reader != null && reader.HasRows)
                    {
                        reader.Read();
                        command.Transaction = command.Connection.BeginTransaction();

                        OracleLob lob = reader.GetOracleLob(0);
                        if (lob != OracleLob.Null)
                        {
                            stream = new StreamReader(lob, Encoding.Unicode);
                            output = stream.ReadToEnd().Trim();
                            command.Transaction.Commit();
                            reader.Close();
                        }
                    }
                }
                catch
                {
                    command.Transaction.Rollback();
                    throw;
                }
                finally
                {
                    stream.Close();
                    command.Dispose();
                    connection.Close();
                    connection.Dispose();
                }
            }
        }
    }
}

View Code

QueryParam：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace LoginWebApp.Common
{
    /// <summary>
    /// 分頁存儲過程查詢參數類
    /// </summary>
    public class QueryParam
    {

        /// <summary>
        /// 構造函數
        /// </summary>
        public QueryParam()
            : this(1, int.MaxValue)
        { }

        /// <summary>
        /// 構造函數
        /// </summary>
        /// <param name="_mPageIndex">當前頁碼</param>
        /// <param name="_mPageSize">每頁記錄數</param>
        public QueryParam(int _mPageIndex, int _mPageSize)
        {
            _PageIndex = _mPageIndex;
            _PageSize = _mPageSize;
        }

        /// <summary>
        /// 構造函數
        /// </summary>
        /// <param name="_mOrderType">排序類型 1:降序 其它為升序</param>
        /// <param name="_mPageIndex">當前頁碼</param>
        /// <param name="_mPageSize">每頁記錄數</param>
        public QueryParam(int _mOrderType, int _mPageIndex, int _mPageSize)
        {
            _OrderType = _mOrderType;
            _PageIndex = _mPageIndex;
            _PageSize = _mPageSize;
        }

        /// <summary>
        /// 構造函數
        /// </summary>
        /// <param name="_mWhere">查詢條件 需帶Where</param>
        /// <param name="_mOrderType">排序類型 1:降序 其它為升序</param>
        /// <param name="_mPageIndex">當前頁碼</param>
        /// <param name="_mPageSize">每頁記錄數</param>
        public QueryParam(string _mWhere, int _mOrderType,
            int _mPageIndex, int _mPageSize)
        {
            _Where = _mWhere;
            _OrderType = _mOrderType;
            _PageIndex = _mPageIndex;
            _PageSize = _mPageSize;
        }

        /// <summary>
        /// 構造函數
        /// </summary>
        /// <param name="_mWhere">查詢條件 需帶Where</param>
        /// <param name="_mOrderfld">排序字段</param>
        /// <param name="_mOrderType">排序類型 1:降序 其它為升序</param>
        /// <param name="_mPageIndex">當前頁碼</param>
        /// <param name="_mPageSize">每頁記錄數</param>
        public QueryParam(string _mWhere, string _mOrderfld, int _mOrderType,
            int _mPageIndex, int _mPageSize)
        {
            _Where = _mWhere;
            _Orderfld = _mOrderfld;
            _OrderType = _mOrderType;
            _PageIndex = _mPageIndex;
            _PageSize = _mPageSize;
        }



        /// <summary>
        /// 構造函數
        /// </summary>
        /// <param name="_mTableName">表名</param>
        /// <param name="_mReturnFields">返回字段</param>
        /// <param name="_mWhere">查詢條件 需帶Where</param>
        /// <param name="_mOrderfld">排序字段</param>
        /// <param name="_mOrderType">排序類型 1:降序 其它為升序</param>
        /// <param name="_mPageIndex">當前頁碼</param>
        /// <param name="_mPageSize">每頁記錄數</param>
        public QueryParam(string _mTableName, string _mReturnFields,
            string _mWhere, string _mOrderfld,
            int _mOrderType, int _mPageIndex, int _mPageSize)
        {
            _TableName = _mTableName;
            _ReturnFields = _mReturnFields;
            _Where = _mWhere;
            _Orderfld = _mOrderfld;
            _OrderType = _mOrderType;
            _PageIndex = _mPageIndex;
            _PageSize = _mPageSize;
        }



        #region "Private Variables"
        private string _TableName;
        private string _ReturnFields;
        private string _Where;
        private string _Orderfld;
        private int _OrderType = 1;
        private int _PageIndex = 1;
        private int _PageSize = int.MaxValue;
        #endregion

        #region "Public Variables"

        /// <summary>
        /// 表名
        /// </summary>
        public string TableName
        {
            get
            {
                return _TableName;
            }
            set
            {
                _TableName = value;
            }

        }



        /// <summary>
        /// 返回字段
        /// </summary>
        public string ReturnFields
        {
            get
            {
                return _ReturnFields;
            }
            set
            {
                _ReturnFields = value;
            }
        }




        /// <summary>
        /// 查詢條件 需帶Where
        /// </summary>
        public string Where
        {
            get
            {
                return _Where;
            }
            set
            {
                _Where = value;
            }
        }





        /// <summary>
        /// 排序字段
        /// </summary>
        public string Orderfld
        {
            get
            {
                return _Orderfld;
            }
            set
            {
                _Orderfld = value;
            }
        }


        /// <summary>
        /// 排序類型 1:降序 其它為升序
        /// </summary>
        public int OrderType
        {
            get
            {
                return _OrderType;
            }
            set
            {
                _OrderType = value;
            }
        }


        /// <summary>
        /// 當前頁碼
        /// </summary>
        public int PageIndex
        {
            get
            {
                return _PageIndex;
            }
            set
            {
                _PageIndex = value;
            }

        }


        /// <summary>
        /// 每頁記錄數
        /// </summary>
        public int PageSize
        {
            get
            {
                return _PageSize;
            }
            set
            {
                _PageSize = value;
            }
        }
        #endregion
    }
}

View Code

DataSys_分別存有不同系統名稱連接對應的數據庫操作類假如有幾個系統分別是CMS、ERP、GPRS等對應的數據庫操作方法類比如GPRS對應下有GPRS_BLLFacade 也就是數據業務邏輯層 GPRS_DataProvider 以及GPRS_OracleDataProvider數據庫操作類待續。。。

免責聲明！

本站轉載的文章為個人學習借鑒使用，本站對版權不負任何法律責任。如果侵犯了您的隱私權益，請聯系本站郵箱yoyou2525@163.com刪除。

猜您在找 java數據庫連接類，已經把數據庫操作的方法都封裝好了 (轉)C# Oracle數據庫操作類 .NET/C#/Oracle數據庫操作類 C# Oracle數據庫操作類基於python實現Oracle數據庫連接查詢操作 dos命令行連接操作ORACLE數據庫 Python連接oracle數據庫的基本操作 C#連接oracle數據庫操作連接Linux服務器操作Oracle數據庫 go連接oracle數據庫操作（godror）