簡易型: C# DBHelper Code using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Data.SqlClient; using System.
簡易型:
C# DBHelper Code using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Data.SqlClient; using System.Configuration; namespace ADODoNETDemo { /// <summary> /// 針對SQL Server資料庫操作的通用類 /// 作者:周公 /// 日期:2009-01-08 /// Version:1.0 /// </summary> public class SqlDbHelper { private string connectionString; /// <summary> /// 設置資料庫連接字元串 /// </summary> public string ConnectionString { set { connectionString = value; } } /// <summary> /// 構造函數 /// </summary> public SqlDbHelper() : this(ConfigurationManager.ConnectionStrings["Conn"].ConnectionString) { } /// <summary> /// 構造函數 /// </summary> /// <param name="connectionString">資料庫連接字元串</param> public SqlDbHelper(string connectionString) { this.connectionString = connectionString; } /// <summary> /// 執行一個查詢,並返回結果集 /// </summary> /// <param name="sql">要執行的查詢SQL文本命令</param> /// <returns>返回查詢結果集</returns> public DataTable ExecuteDataTable(string sql) { return ExecuteDataTable(sql, CommandType.Text, null); } /// <summary> /// 執行一個查詢,並返回查詢結果 /// </summary> /// <param name="sql">要執行的SQL語句</param> /// <param name="commandType">要執行的查詢語句的類型,如存儲過程或者SQL文本命令</param> /// <returns>返回查詢結果集</returns> public DataTable ExecuteDataTable(string sql, CommandType commandType) { return ExecuteDataTable(sql, commandType, null); } /// <summary> /// 執行一個查詢,並返回查詢結果 /// </summary> /// <param name="sql">要執行的SQL語句</param> /// <param name="commandType">要執行的查詢語句的類型,如存儲過程或者SQL文本命令</param> /// <param name="parameters">Transact-SQL 語句或存儲過程的參數數組</param> /// <returns></returns> public DataTable ExecuteDataTable(string sql, CommandType commandType, SqlParameter[] parameters) { DataTable data = new DataTable();//實例化DataTable,用於裝載查詢結果集 using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand(sql, connection)) { command.CommandType = commandType;//設置command的CommandType為指定的CommandType //如果同時傳入了參數,則添加這些參數 if (parameters != null) { foreach (SqlParameter parameter in parameters) { command.Parameters.Add(parameter); } } //通過包含查詢SQL的SqlCommand實例來實例化SqlDataAdapter SqlDataAdapter adapter = new SqlDataAdapter(command); adapter.Fill(data);//填充DataTable } } return data; } /// <summary> /// /// </summary> /// <param name="sql">要執行的查詢SQL文本命令</param> /// <returns></returns> public SqlDataReader ExecuteReader(string sql) { return ExecuteReader(sql, CommandType.Text, null); } /// <summary> /// /// </summary> /// <param name="sql">要執行的SQL語句</param> /// <param name="commandType">要執行的查詢語句的類型,如存儲過程或者SQL文本命令</param> /// <returns></returns> public SqlDataReader ExecuteReader(string sql, CommandType commandType) { return ExecuteReader(sql, commandType, null); } /// <summary> /// /// </summary> /// <param name="sql">要執行的SQL語句</param> /// <param name="commandType">要執行的查詢語句的類型,如存儲過程或者SQL文本命令</param> /// <param name="parameters">Transact-SQL 語句或存儲過程的參數數組</param> /// <returns></returns> public SqlDataReader ExecuteReader(string sql, CommandType commandType, SqlParameter[] parameters) { SqlConnection connection = new SqlConnection(connectionString); SqlCommand command = new SqlCommand(sql, connection); //如果同時傳入了參數,則添加這些參數 if (parameters != null) { foreach (SqlParameter parameter in parameters) { command.Parameters.Add(parameter); } } connection.Open(); //CommandBehavior.CloseConnection參數指示關閉Reader對象時關閉與其關聯的Connection對象 return command.ExecuteReader(CommandBehavior.CloseConnection); } /// <summary> /// /// </summary> /// <param name="sql">要執行的查詢SQL文本命令</param> /// <returns></returns> public Object ExecuteScalar(string sql) { return ExecuteScalar(sql, CommandType.Text, null); } /// <summary> /// /// </summary> /// <param name="sql">要執行的SQL語句</param> /// <param name="commandType">要執行的查詢語句的類型,如存儲過程或者SQL文本命令</param> /// <returns></returns> public Object ExecuteScalar(string sql, CommandType commandType) { return ExecuteScalar(sql, commandType, null); } /// <summary> /// /// </summary> /// <param name="sql">要執行的SQL語句</param> /// <param name="commandType">要執行的查詢語句的類型,如存儲過程或者SQL文本命令</param> /// <param name="parameters">Transact-SQL 語句或存儲過程的參數數組</param> /// <returns></returns> public Object ExecuteScalar(string sql, CommandType commandType, SqlParameter[] parameters) { object result = null; using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand(sql, connection)) { command.CommandType = commandType;//設置command的CommandType為指定的CommandType //如果同時傳入了參數,則添加這些參數 if (parameters != null) { foreach (SqlParameter parameter in parameters) { command.Parameters.Add(parameter); } } connection.Open();//打開資料庫連接 result = command.ExecuteScalar(); } } return result;//返回查詢結果的第一行第一列,忽略其它行和列 } /// <summary> /// 對資料庫執行增刪改操作 /// </summary> /// <param name="sql">要執行的查詢SQL文本命令</param> /// <returns></returns> public int ExecuteNonQuery(string sql) { return ExecuteNonQuery(sql, CommandType.Text, null); } /// <summary> /// 對資料庫執行增刪改操作 /// </summary> /// <param name="sql">要執行的SQL語句</param> /// <param name="commandType">要執行的查詢語句的類型,如存儲過程或者SQL文本命令</param> /// <returns></returns> public int ExecuteNonQuery(string sql, CommandType commandType) { return ExecuteNonQuery(sql, commandType, null); } /// <summary> /// 對資料庫執行增刪改操作 /// </summary> /// <param name="sql">要執行的SQL語句</param> /// <param name="commandType">要執行的查詢語句的類型,如存儲過程或者SQL文本命令</param> /// <param name="parameters">Transact-SQL 語句或存儲過程的參數數組</param> /// <returns></returns> public int ExecuteNonQuery(string sql, CommandType commandType, SqlParameter[] parameters) { int count = 0; using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand command = new SqlCommand(sql, connection)) { command.CommandType = commandType;//設置command的CommandType為指定的CommandType //如果同時傳入了參數,則添加這些參數 if (parameters != null) { foreach (SqlParameter parameter in parameters) { command.Parameters.Add(parameter); } } connection.Open();//打開資料庫連接 count = command.ExecuteNonQuery(); } } return count;//返回執行增刪改操作之後,資料庫中受影響的行數 } /// <summary> /// 返回當前連接的資料庫中所有由用戶創建的資料庫 /// </summary> /// <returns></returns> public DataTable GetTables() { DataTable data = null; using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open();//打開資料庫連接 data = connection.GetSchema("Tables"); } return data; } } }
複雜型:
C# DBUtility Code using System; using System.Collections; using System.Collections.Specialized; using System.Data; using System.Data.SqlClient; using System.Configuration; using System.Data.Common; using System.Collections.Generic; using TL.DataAccess; namespace TL.Business { public enum EffentNextType { /// <summary> /// 對其他語句無任何影響 /// </summary> None, /// <summary> /// 當前語句必須為"SELECT COUNT(1) FROM .."格式,如果存在則繼續執行,不存在回滾事務 /// </summary> WhenHaveContine, /// <summary> /// 當前語句必須為"SELECT COUNT(1) FROM .."格式,如果不存在則繼續執行,存在回滾事務 /// </summary> WhenNoHaveContine, /// <summary> /// 當前語句影響到的行數必須大於0,否則回滾事務 /// </summary> ExcuteEffectRows, /// <summary> /// 引發事件-當前語句必須為"SELECT COUNT(1) FROM .."格式,如果不存在則繼續執行,存在回滾事務 /// </summary> SolicitationEvent } public class DBUtility { public object ShareObject = null; public object OriginalData = null; event EventHandler _solicitationEvent; public event EventHandler SolicitationEvent { add { _solicitationEvent += value; } remove { _solicitationEvent -= value; } } public void OnSolicitationEvent() { if (_solicitationEvent != null) { _solicitationEvent(this,new EventArgs()); } } public string CommandText; public System.Data.Common.DbParameter[] Parameters; public EffentNextType EffentNextType = EffentNextType.None; public DBUtility() { } public DBUtility(SqlParameter[] para) { this.Parameters = para; } public DBUtility(string sqlText, SqlParameter[] para) { this.CommandText = sqlText; this.Parameters = para; } public DBUtility(string sqlText, SqlParameter[] para, EffentNextType type) { this.CommandText = sqlText; this.Parameters = para; this.EffentNextType = type; } } /// <summary> /// 數據訪問抽象基礎類 /// Copyright (C) 2004-2008 By LiTianPing /// </summary> public class SQLHelper { //資料庫連接字元串(web.config來配置),可以動態更改connectionString支持多資料庫. public string connectionString = ""; public SQLHelper() { connectionString = @"DATA SOURCE=192.168.0.103,2433;UID=cdteam;PWD=cd-team2011_;DATABASE=TongLing"; } #region 公用方法 /// <summary> /// 讀取指定圖片的二進位信息 /// </summary> /// <param name="id"></param> /// <returns></returns> public object LoadImage(int id) { SqlConnection myConnection = new SqlConnection(connectionString); SqlCommand myCommand = new SqlCommand("SELECT [bImage] FROM [tblCAIPIAO_NEWS_IMG] WHERE id=@id", myConnection); myCommand.CommandType = CommandType.Text; myCommand.Parameters.Add(new SqlParameter("@id", id)); myConnection.Open(); object result = myCommand.ExecuteScalar(); try { return new System.IO.MemoryStream((byte[])result); } catch (ArgumentNullException e) { return null; } finally { myConnection.Close(); } } /// <summary> /// 判斷是否存在某表的某個欄位 /// </summary> /// <param name="tableName">表名稱</param> /// <param name="columnName">列名稱</param> /// <returns>是否存在</returns> public bool ColumnExists(string tableName, string columnName) { string sql = "select count(1) from syscolumns where id=object_id(" + tableName + ") and name=" + columnName + ""; object res = GetSingle(sql); if (res == null) { return false; } return Convert.ToInt32(res) > 0; } public int GetMaxID(string FieldName, string TableName) { string strsql = "select max(" + FieldName + ")+1 from " + TableName; object obj = this.GetSingle(strsql); if (obj == null) { return 1; } else { return int.Parse(obj.ToString()); } } public bool Exists(string strSql) { object obj = this.GetSingle(strSql); int cmdresult; if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { cmdresult = 0; } else { cmdresult = int.Parse(obj.ToString()); } if (cmdresult == 0) { return false; } else { return true; } } /// <summary> /// 表是否存在 /// </summary> /// <param name="TableName"></param> /// <returns></returns> public bool TabExists(string TableName) { string strsql = "select count(*) from sysobjects where id = object_id(N[" + TableName + "]) and OBJECTPROPERTY(id, N[IsUserTable]) = 1"; //string strsql = "SELECT count(*) FROM sys.objects WHERE object_id = OBJECT_ID(N"[dbo].[" + TableName + "]") AND type in (N"U")"; object obj = this.GetSingle(strsql); int cmdresult; if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { cmdresult = 0; } else { cmdresult = int.Parse(obj.ToString()); } if (cmdresult == 0) { return false; } else { return true; } } public bool Exists(string strSql, params SqlParameter[] cmdParms) { object obj = this.GetSingle(strSql, cmdParms); int cmdresult; if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { cmdresult = 0; } else { cmdresult = int.Parse(obj.ToString()); } if (cmdresult == 0) { return false; } else { return true; } } #endregion #region 執行簡單SQL語句 /// <summary> /// 執行SQL語句,返回影響的記錄數 /// </summary> /// <param name="SQLString">SQL語句</param> /// <returns>影響的記錄數</returns> public int ExecuteSql(string SQLString) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw e; } } } } public int ExecuteSqlByTime(string SQLString, int Times) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); cmd.CommandTimeout = Times; int rows = cmd.ExecuteNonQuery(); return rows; } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw e; } } } } /// <summary> /// 執行Sql和Oracle滴混合事務 /// </summary> /// <param name="list">SQL命令行列表</param> /// <param name="oracleCmdSqlList">Oracle命令行列表</param> /// <returns>執行結果 0-由於SQL造成事務失敗 -1 由於Oracle造成事務失敗 1-整體事務執行成功</returns> public int ExecuteSqlTran(List<DBUtility> list, List<DBUtility> oracleCmdSqlList) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); SqlCommand cmd = new SqlCommand(); cmd.Connection = conn; SqlTransaction tx = conn.BeginTransaction(); cmd.Transaction = tx; try { foreach (DBUtility myDE in list) { string cmdText = myDE.CommandText; SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters; PrepareCommand(cmd, conn, tx, cmdText, cmdParms); if (myDE.EffentNextType == EffentNextType.SolicitationEvent) { if (myDE.CommandText.ToLower().IndexOf("count(") == -1) { tx.Rollback(); throw new Exception("違背要求" + myDE.CommandText + "必須符合select count(..的格式"); //return 0; } object obj = cmd.ExecuteScalar(); bool isHave = false; if (obj == null && obj == DBNull.Value) { isHave = false; } isHave = Convert.ToInt32(obj) > 0; if (isHave) { //引發事件 myDE.OnSolicitationEvent(); } } if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine) { if (myDE.CommandText.ToLower().IndexOf("count(") == -1) { tx.Rollback(); throw new Exception("SQL:違背要求" + myDE.CommandText + "必須符合select count(..的格式"); //return 0; } object obj = cmd.ExecuteScalar(); bool isHave = false; if (obj == null && obj == DBNull.Value) { isHave = false; } isHave = Convert.ToInt32(obj) > 0; if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave) { tx.Rollback(); throw new Exception("SQL:違背要求" + myDE.CommandText + "返回值必須大於0"); //return 0; } if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave) { tx.Rollback(); throw new Exception("SQL:違背要求" + myDE.CommandText + "返回值必須等於0"); //return 0; } continue; } int val = cmd.ExecuteNonQuery(); if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0) { tx.Rollback(); throw new Exception("SQL:違背要求" + myDE.CommandText + "必須有影響行"); //return 0; } cmd.Parameters.Clear(); } //string oraConnectionString = PubConstant.GetConnectionString("ConnectionStringPPC"); //bool res = OracleHelper.ExecuteSqlTran(oraConnectionString, oracleCmdSqlList); //if (!res) //{ // tx.Rollback(); // throw new Exception("Oracle執行失敗"); // return -1; //} tx.Commit(); return 1; } catch (System.Data.SqlClient.SqlException e) { tx.Rollback(); throw e; } catch (Exception e) { tx.Rollback(); throw e; } } } /// <summary> /// 執行多條SQL語句,實現資料庫事務。 /// </summary> /// <param name="SQLStringList">多條SQL語句</param> public int ExecuteSqlTran(List<String> SQLStringList) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); SqlCommand cmd = new SqlCommand(); cmd.Connection = conn; SqlTransaction tx = conn.BeginTransaction(); cmd.Transaction = tx; try { int count = 0; for (int n = 0; n < SQLStringList.Count; n++) { string strsql = SQLStringList[n]; if (strsql.Trim().Length > 1) { cmd.CommandText = strsql; count += cmd.ExecuteNonQuery(); } } tx.Commit(); return count; } catch { tx.Rollback(); return 0; } } } /// <summary> /// 執行帶一個存儲過程參數的的SQL語句。 /// </summary> /// <param name="SQLString">SQL語句</param> /// <param name="content">參數內容,比如一個欄位是格式複雜的文章,有特殊符號,可以通過這個方式添加</param> /// <returns>影響的記錄數</returns> public int ExecuteSql(string SQLString, string content) { using (SqlConnection connection = new SqlConnection(connectionString)) { SqlCommand cmd = new SqlCommand(SQLString, connection); System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText); myParameter.Value = content; cmd.Parameters.Add(myParameter); try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (System.Data.SqlClient.SqlException e) { throw e; } finally { cmd.Dispose(); connection.Close(); } } } /// <summary> /// 執行帶一個存儲過程參數的的SQL語句。 /// </summary> /// <param name="SQLString">SQL語句</param> /// <param name="content">參數內容,比如一個欄位是格式複雜的文章,有特殊符號,可以通過這個方式添加</param> /// <returns>影響的記錄數</returns> public object ExecuteSqlGet(string SQLString, string content) { using (SqlConnection connection = new SqlConnection(connectionString)) { SqlCommand cmd = new SqlCommand(SQLString, connection); System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText); myParameter.Value = content; cmd.Parameters.Add(myParameter); try { connection.Open(); object obj = cmd.ExecuteScalar(); if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { return null; } else { return obj; } } catch (System.Data.SqlClient.SqlException e) { throw e; } finally { cmd.Dispose(); connection.Close(); } } } /// <summary> /// 向資料庫里插入圖像格式的欄位(和上面情況類似的另一種實例) /// </summary> /// <param name="strSQL">SQL語句</param> /// <param name="fs">圖像位元組,資料庫的欄位類型為image的情況</param> /// <returns>影響的記錄數</returns> public int ExecuteSqlInsertImg(string strSQL, byte[] fs) { using (SqlConnection connection = new SqlConnection(connectionString)) { SqlCommand cmd = new SqlCommand(strSQL, connection); System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@fs", SqlDbType.Image); myParameter.Value = fs; cmd.Parameters.Add(myParameter); try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (System.Data.SqlClient.SqlException e) { throw e; } finally { cmd.Dispose(); connection.Close(); } } } /// <summary> /// 執行一條計算查詢結果語句,返回查詢結果(object)。 /// </summary> /// <param name="SQLString">計算查詢結果語句</param> /// <returns>查詢結果(object)</returns> public object GetSingle(string SQLString) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); object obj = cmd.ExecuteScalar(); if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { return null; } else { return obj; } } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw e; } } } } public object GetSingle(string SQLString, int Times) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); cmd.CommandTimeout = Times; object obj = cmd.ExecuteScalar(); if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { return null; } else { return obj; } } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw e; } } } } /// <summary> /// 執行查詢語句,返回SqlDataReader ( 註意:調用該方法後,一定要對SqlDataReader進行Close ) /// </summary> /// <param name="strSQL">查詢語句</param> /// <returns>SqlDataReader</returns> public SqlDataReader ExecuteReader(string strSQL) { SqlConnection connection = new SqlConnection(connectionString); SqlCommand cmd = new SqlCommand(strSQL, connection); try { connection.Open(); SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection); return myReader; } catch (System.Data.SqlClient.SqlException e) { throw e; } } /// <summary> /// 執行查詢語句,返回DataSet /// </summary> /// <param name="SQLString">查詢語句</param> /// <returns>DataSet</returns> public DataSet Query(string SQLString) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet ds = new DataSet(); try { connection.Open(); SqlDataAdapter command = new SqlDataAdapter(SQLString, connection); command.Fill(ds, "ds"); } catch (System.Data.SqlClient.SqlException ex) { throw new Exception(ex.Message); } return ds; } } /// <summary> /// 查詢並得到數據集DataSet /// </summary> /// <param name="SQLString"></param> /// <param name="Times"></param> /// <returns></returns> public DataSet Query(string SQLString, int Times) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet ds = new DataSet(); try { connection.Open(); SqlDataAdapter command = new SqlDataAdapter(SQLString, connection); command.SelectCommand.CommandTimeout = Times; command.Fill(ds, "ds"); } catch (System.Data.SqlClient.SqlException ex) { throw new Exception(ex.Message); } return ds; } } #endregion #region 執行帶參數的SQL語句 /// <summary> /// 執行SQL語句,返回影響的記錄數 /// </summary> /// <param name="SQLString">SQL語句</param> /// <returns>影響的記錄數</returns> public int ExecuteSql(string SQLString, params SqlParameter[] cmdParms) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand()) { try { PrepareCommand(cmd, connection, null, SQLString, cmdParms); int rows = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); return rows; } catch (System.Data.SqlClient.SqlException e) { throw e; } } } } /// <summary> /// 執行多條SQL語句,實現資料庫事務。 /// </summary> /// <param name="SQLStringList">SQL語句的哈希表(key為sql語句,value是該語句的SqlParameter[])</param> public void ExecuteSqlTran(Hashtable SQLStringList) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlTransaction trans = conn.BeginTransaction()) { SqlCommand cmd = new SqlCommand(); try { //迴圈 foreach (DictionaryEntry myDE in SQLStringList) { string cmdText = myDE.Key.ToString(); SqlParameter[] cmdParms = (SqlParameter[])myDE.Value; PrepareCommand(cmd, conn, trans, cmdText, cmdParms); int val = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); } trans.Commit(); } catch { trans.Rollback(); throw; } } } } /// <summary> /// 執行多條SQL語句,實現資料庫事務。 /// </summary> /// <param name="SQLStringList">SQL語句的哈希表(key為sql語句,value是該語句的SqlParameter[])</param> public int ExecuteSqlTran(System.Collections.Generic.List<DBUtility> cmdList) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlTransaction trans = conn.BeginTransaction()) { SqlCommand cmd = new SqlCommand(); try { int count = 0; //迴圈 foreach (DBUtility myDE in cmdList) { string cmdText = myDE.CommandText; SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters; PrepareCommand(cmd, conn, trans, cmdText, cmdParms); if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine) { if (myDE.CommandText.ToLower().IndexOf("count(") == -1) { trans.Rollback(); return 0; } object obj = cmd.ExecuteScalar(); bool isHave = false; if (obj == null && obj == DBNull.Value) { isHave = false; } isHave = Convert.ToInt32(obj) > 0; if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave) { trans.Rollback(); return 0; } if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave) { trans.Rollback(); return 0; } continue; } int val = cmd.ExecuteNonQuery(); count += val; if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0) { trans.Rollback(); return 0; } cmd.Parameters.Clear(); } trans.Commit(); return count; } catch { trans.Rollback(); throw; } } } } /// <summary> /// 執行多條SQL語句,實現資料庫事務。 /// </summary> /// <param name="SQLStringList">SQL語句的哈希表(key為sql語句,value是該語句的SqlParameter[])</param> public void ExecuteSqlTranWithIndentity(System.Collections.Generic.List<DBUtility> SQLStringList) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlTransaction trans = conn.BeginTransaction()) { SqlCommand cmd = new SqlCommand(); try { int indentity = 0; //迴圈 foreach (DBUtility myDE in SQLStringList) { string cmdText = myDE.CommandText; SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters; foreach (SqlParameter q in cmdParms) { if (q.Direction == ParameterDirection.InputOutput) { q.Value = indentity; } } PrepareCommand(cmd, conn, trans, cmdText, cmdParms); int val = cmd.ExecuteNonQuery(); foreach (SqlParameter q in cmdParms) { if (q.Direction == ParameterDirection.Output) { indentity = Convert.ToInt32(q.Value); } } cmd.Parameters.Clear(); } trans.Commit(); } catch { trans.Rollback(); throw; } } } } /// <summary> /// 執行多條SQL語句,實現資料庫事務。 /// </summary> /// <param name="SQLStringList">SQL語句的哈希表(key為sql語句,value是該語句的SqlParameter[])</param> public void ExecuteSqlTranWithIndentity(Hashtable SQLStringList) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlTransaction trans = conn.BeginTransaction()) { SqlCommand cmd = new SqlCommand(); try { int indentity = 0; //迴圈 foreach (DictionaryEntry myDE in SQLStringList) { string cmdText = myDE.Key.ToString(); SqlParameter[] cmdParms = (SqlParameter[])myDE.Value; foreach (SqlParameter q in cmdParms) { if (q.Direction == ParameterDirection.InputOutput) { q.Value = indentity; } } PrepareCommand(cmd, conn, trans, cmdText, cmdParms); int val = cmd.ExecuteNonQuery(); foreach (SqlParameter q in cmdParms) { if (q.Direction == ParameterDirection.Output) { indentity = Convert.ToInt32(q.Value); } } cmd.Parameters.Clear(); } trans.Commit(); } catch { trans.Rollback(); throw; } } } } /// <summary> /// 執行一條計算查詢結果語句,返回查詢結果(object)。 /// </summary> /// <param name="SQLString">計算查詢結果語句</param> /// <returns>查詢結果(object)</returns> public object GetSingle(string SQLString, params SqlParameter[] cmdParms) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand()) { try { PrepareCommand(cmd, connection, null, SQLString, cmdParms); object obj = cmd.ExecuteScalar(); cmd.Parameters.Clear(); if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { return null; } else { return obj; } } catch (System.Data.SqlClient.SqlException e) { throw e; } } } } /// <summary> /// 執行查詢語句,返回SqlDataReader ( 註意:調用該方法後,一定要對SqlDataReader進行Close ) /// </summary> /// <param name="strSQL">查詢語句</param> /// <returns>SqlDataReader</returns> public SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms) { SqlConnection connection = new SqlConnection(connectionString); SqlCommand cmd = new SqlCommand(); try { PrepareCommand(cmd, connection, null, SQLString, cmdParms); SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection); cmd.Parameters.Clear(); return myReader; } catch (System.Data.SqlClient.SqlException e) { throw e; } // finally // { // cmd.Dispose(); // connection.Close(); // } } /// <summary> /// 執行查詢語句,返回DataSet /// </summary> /// <param name="SQLString">查詢語句</param> /// <returns>DataSet</returns> public DataSet Query(string SQLString, params SqlParameter[] cmdParms) { using (SqlConnection connection = new SqlConnection(connectionString)) { SqlCommand cmd = new SqlCommand(); PrepareCommand(cmd, connection, null, SQLString, cmdParms); using (SqlDataAdapter da = new SqlDataAdapter(cmd)) { DataSet ds = new DataSet(); try { da.Fill(ds, "ds"); cmd.Parameters.Clear(); } catch (System.Data.SqlClient.SqlException ex) { throw new Exception(ex.Message); } return ds; } } } private void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms) { if (conn.State != ConnectionState.Open) conn.Open(); cmd.Connection = conn; cmd.CommandText = cmdText; if (trans != null) cmd.Transaction = trans; cmd.CommandType = CommandType.Text;//cmdType; if (cmdParms != null) { foreach (SqlParameter parameter in cmdParms) { if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) && (parameter.Value == null)) { parameter.Value = DBNull.Value; } cmd.Parameters.Add(parameter); } } } #endregion #region 存儲過程操作 /// <summary> /// 執行存儲過程,返回SqlDataReader ( 註意:調用該方法後,一定要對SqlDataReader進行Close ) /// </summary> /// <param name="storedProcName">存儲過程名</param> /// <param name="parameters">存儲過程參數</param> /// <returns>SqlDataReader</returns> public SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters) { SqlConnection connection = new SqlConnection(connectionString); SqlDataReader returnReader; connection.Open(); SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters); command.CommandType = CommandType.StoredProcedure; returnReader = command.ExecuteReader(CommandBehavior.CloseConnection); return returnReader; } /// <summary> /// 執行存儲過程 /// </summary> /// <param name="storedProcName">存儲過程名</param> /// <param name="parameters">存儲過程參數</param> /// <param name="tableName">DataSet結果中的表名</param> /// <returns>DataSet</returns> public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet dataSet = new DataSet(); connection.Open(); SqlDataAdapter sqlDA = new SqlDataAdapter(); sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters); sqlDA.Fill(dataSet, tableName); connection.Close(); return dataSet; } } public DataSet RunProcedure2(string storedProcName, string tableName) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet dataSet = new DataSet(); connection.Open(); SqlDataAdapter sqlDA = new SqlDataAdapter(); sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName); sqlDA.Fill(dataSet, tableName); connection.Close(); return dataSet; } } public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet dataSet = new DataSet(); connection.Open(); SqlDataAdapter sqlDA = new SqlDataAdapter(); sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters); sqlDA.SelectCommand.CommandTimeout = Times; sqlDA.Fill(dataSet, tableName); connection.Close(); return dataSet; } } /// <summary> /// 構建 SqlCommand 對象(用來返回一個結果集,而不是一個整數值) /// </summary> /// <param name="connection">資料庫連接</param> /// <param name="storedProcName">存儲過程名</param> /// <param name="parameters">存儲過程參數</param> /// <returns>SqlCommand</returns> private SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters) { SqlCommand command = new SqlCommand(storedProcName, connection); command.CommandType = CommandType.StoredProcedure; foreach (SqlParameter parameter in parameters) { if (parameter != null) { // 檢查未分配值的輸出參數,將其分配以DBNull.Value. if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) && (parameter.Value == null)) { parameter.Value = DBNull.Value; } command.Parameters.Add(parameter); } } return command; } private SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName) { SqlCommand command = new SqlCommand(storedProcName, connection); command.CommandType = CommandType.StoredProcedure; return command; } /// <summary> /// 執行存儲過程,返回影響的行數 /// </summary> /// <param name="storedProcName">存儲過程名</param> /// <param name="parameters">存儲過程參數</param> /// <param name="rowsAffected">影響的行數</param> /// <returns></returns> public int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected) { using (SqlConnection connection = new SqlConnection(connectionString)) { int result; connection.Open(); SqlCommand command = BuildIntCommand(connection, storedProcName, parameters); rowsAffected = command.ExecuteNonQuery(); result = (int)command.Parameters["ReturnValue"].Value; //Connection.Close(); return result; } } public int RunProcedure1(string storedProcName, IDataParameter[] parameters) { //connectionString = @"DATA SOURCE=192.168.0.103,2433;UID=cdteam;PWD=cd-team2011_;DATABASE=ShiNianCMS"; using (SqlConnection connection = new SqlConnection(connectionString)) { int result; connection.Open(); SqlCommand command = BuildIntCommand(connection, storedProcName, parameters); command.ExecuteNonQuery(); result = (int)command.Parameters["ReturnValue"].Value; //Connection.Close(); return result; } } public int RunProcedure3(string storedProcName) { //connectionString = @"DATA SOURCE=192.168.0.103,2433;UID=cdteam;PWD=cd-team2011_;DATABASE=ShiNianCMS"; using (SqlConnection connection = new SqlConnection(connectionString)) { int result; connection.Open(); SqlCommand command = BuildQueryCommand(connection, storedProcName); command.ExecuteNonQuery(); result = (int)command.Parameters["ReturnValue"].Value; //Connection.Close(); return result; } } /// <summary> /// 創建 SqlCommand 對象實例(用來返回一個整數值) /// </summary> /// <param name="storedProcName">存儲過程名</param> /// <param name="parameters">存儲過程參數</param> /// <returns>SqlCommand 對象實例</returns> private SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters) { SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters); command.Parameters.Add(new SqlParameter("ReturnValue", SqlDbType.Int, 4, ParameterDirection.ReturnValue, false, 0, 0, string.Empty, DataRowVersion.Default, null)); return command; } #endregion } }