1、配置文件設置：
<appSettings> <add key="testDB" value="server=192.168.1.10\sw;database=testDB;uid=sa;pwd=Aa123456" /> </appSettings>
2、操作數據幫助類：
using System; using System.Collections.Generic; using System.Configuration; using System.Data; using System.Data.Common; using System.Data.SqlClient; using System.Linq; using System.Text; using System.Threading.Tasks; namespace SwbAPI { public class DbHelper { //連接字符串 static string strConn = ConfigurationManager.AppSettings["JiTuanShangWuDB"].ToString(); //static string strConn = "server=192.168.1.238\sw;database=BusinessSystemDB;uid=sa;pwd=Aa123456"; #region 執行查詢，返回DataTable對象----------------------- public static DataTable GetTable(string strSQL) { return GetTable(strSQL, null); } public static DataTable GetTable(string strSQL, SqlParameter[] pas) { return GetTable(strSQL, pas, CommandType.Text); } /// <summary> /// 執行查詢，返回DataTable對象 /// </summary> /// <param name="strSQL">sql語句</param> /// <param name="pas">參數數組</param> /// <param name="cmdtype">Command類型</param> /// <returns>DataTable對象</returns> public static DataTable GetTable(string strSQL, SqlParameter[] pas, CommandType cmdtype) { DataTable dt = new DataTable(); ; using (SqlConnection conn = new SqlConnection(strConn)) { SqlDataAdapter da = new SqlDataAdapter(strSQL, conn); da.SelectCommand.CommandType = cmdtype; if (pas != null) { da.SelectCommand.Parameters.AddRange(pas); } da.Fill(dt); } return dt; } #region 根據枚舉連接數據庫 public static DataTable GetTable(string strSQL, DataBaseName dataBaseName) { return GetTable(strSQL, null, dataBaseName); } public static DataTable GetTable(string strSQL, SqlParameter[] pas, DataBaseName dataBaseName) { return GetTable(strSQL, pas, CommandType.Text, dataBaseName); } /// <summary> /// 執行查詢，返回DataTable對象 /// </summary> /// <param name="strSQL">sql語句</param> /// <param name="pas">參數數組</param> /// <param name="cmdtype">Command類型</param> /// <returns>DataTable對象</returns> public static DataTable GetTable(string strSQL, SqlParameter[] pas, CommandType cmdtype, DataBaseName dataBaseName) { DataTable dt = new DataTable(); ; using (SqlConnection conn = new SqlConnection(GetEnumDes(dataBaseName.ToString()))) { SqlDataAdapter da = new SqlDataAdapter(strSQL, conn); da.SelectCommand.CommandType = cmdtype; if (pas != null) { da.SelectCommand.Parameters.AddRange(pas); } da.Fill(dt); } return dt; } #endregion #endregion #region 執行查詢，返回DataSet對象------------------------- public static DataSet GetDataSet(string strSQL) { return GetDataSet(strSQL, null); } public static DataSet GetDataSet(string strSQL, SqlParameter[] pas) { return GetDataSet(strSQL, pas, CommandType.Text); } /// <summary> /// 執行查詢，返回DataSet對象 /// </summary> /// <param name="strSQL">sql語句</param> /// <param name="pas">參數數組</param> /// <param name="cmdtype">Command類型</param> /// <returns>DataSet對象</returns> public static DataSet GetDataSet(string strSQL, SqlParameter[] pas, CommandType cmdtype) { DataSet dt = new DataSet(); ; using (SqlConnection conn = new SqlConnection(strConn)) { SqlDataAdapter da = new SqlDataAdapter(strSQL, conn); da.SelectCommand.CommandType = cmdtype; if (pas != null) { da.SelectCommand.Parameters.AddRange(pas); } da.Fill(dt); if (dt != null && dt.Tables.Count == 2) { dt.Tables[0].TableName = "DataList"; dt.Tables[1].TableName = "DataTotal"; } else if (dt != null && dt.Tables.Count == 1) { dt.Tables[0].TableName = "DataList"; } } return dt; } #region 根據枚舉連接數據庫 public static DataSet GetDataSet(string strSQL, DataBaseName dataBaseName) { return GetDataSet(strSQL, null, dataBaseName); } public static DataSet GetDataSet(string strSQL, SqlParameter[] pas, DataBaseName dataBaseName) { return GetDataSet(strSQL, pas, CommandType.Text, dataBaseName); } /// <summary> /// 執行查詢，返回DataSet對象 /// </summary> /// <param name="strSQL">sql語句</param> /// <param name="pas">參數數組</param> /// <param name="cmdtype">Command類型</param> /// <returns>DataSet對象</returns> public static DataSet GetDataSet(string strSQL, SqlParameter[] pas, CommandType cmdtype, DataBaseName dataBaseName) { DataSet dt = new DataSet(); ; using (SqlConnection conn = new SqlConnection(GetEnumDes(dataBaseName.ToString()))) { SqlDataAdapter da = new SqlDataAdapter(strSQL, conn); da.SelectCommand.CommandType = cmdtype; if (pas != null) { da.SelectCommand.Parameters.AddRange(pas); } da.Fill(dt); if (dt != null && dt.Tables.Count == 2) { dt.Tables[0].TableName = "DataList"; dt.Tables[1].TableName = "DataTotal"; } else if (dt != null && dt.Tables.Count == 1) { dt.Tables[0].TableName = "DataList"; } } return dt; } #endregion #endregion #region 執行非查詢存儲過程和SQL語句----------------------------- public static int ExcuteProc(string ProcName) { return ExcuteSQL(ProcName, null, CommandType.StoredProcedure); } public static int ExcuteProc(string ProcName, SqlParameter[] pars) { return ExcuteSQL(ProcName, pars, CommandType.StoredProcedure); } public static int ExcuteSQL(string strSQL) { return ExcuteSQL(strSQL, null); } public static int ExcuteSQL(string strSQL, SqlParameter[] paras) { return ExcuteSQL(strSQL, paras, CommandType.Text); } /// 執行非查詢存儲過程和SQL語句 /// 增、刪、改 /// </summary> /// <param name="strSQL">要執行的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <param name="cmdType">Command類型</param> /// <returns>返回影響行數</returns> public static int ExcuteSQL(string strSQL, SqlParameter[] paras, CommandType cmdType) { int i = 0; using (SqlConnection conn = new SqlConnection(strConn)) { SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = cmdType; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); i = cmd.ExecuteNonQuery(); conn.Close(); } return i; } #region 執行sql返回自增ID /// <summary> /// 執行SQL語句，返回自增ID /// </summary> /// <param name="SQLString">SQL語句</param> /// <returns>影響的記錄數</returns> public static int ExecuteSQLReturnID(string SQLString) { using (SqlConnection connection = new SqlConnection(strConn)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); cmd.CommandText += ";\nSELECT SCOPE_IDENTITY() AS NewID;"; int id = Convert.ToInt32(cmd.ExecuteScalar()); return id; } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw e; } } } } #endregion #region 執行sql返回自增ID /// <summary> /// 執行SQL語句，返回自增ID /// </summary> /// <param name="SQLString">SQL語句</param> /// <returns>影響的記錄數</returns> public static int ExecuteSQLReturnID(string SQLString, SqlParameter[] paras, DataBaseName dataBaseName) { using (SqlConnection connection = new SqlConnection(GetEnumDes(dataBaseName.ToString()))) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { if (paras != null) { cmd.Parameters.AddRange(paras); } connection.Open(); cmd.CommandText += ";\nSELECT SCOPE_IDENTITY() AS NewID;"; int id = Convert.ToInt32(cmd.ExecuteScalar()); return id; } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw e; } } } } #endregion #region 根據枚舉連接數據庫 public static int ExcuteProc(string ProcName, DataBaseName dataBaseName) { return ExcuteSQL(ProcName, null, CommandType.StoredProcedure, dataBaseName); } public static int ExcuteProc(string ProcName, SqlParameter[] pars, DataBaseName dataBaseName) { return ExcuteSQL(ProcName, pars, CommandType.StoredProcedure, dataBaseName); } public static int ExcuteSQL(string strSQL, DataBaseName dataBaseName) { return ExcuteSQL(strSQL, null, dataBaseName); } public static int ExcuteSQL(string strSQL, SqlParameter[] paras, DataBaseName dataBaseName) { return ExcuteSQL(strSQL, paras, CommandType.Text, dataBaseName); } /// 執行非查詢存儲過程和SQL語句 /// 增、刪、改 /// </summary> /// <param name="strSQL">要執行的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <param name="cmdType">Command類型</param> /// <returns>返回影響行數</returns> public static int ExcuteSQL(string strSQL, SqlParameter[] paras, CommandType cmdType, DataBaseName dataBaseName) { int i = 0; using (SqlConnection conn = new SqlConnection(GetEnumDes(dataBaseName.ToString()))) { SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = cmdType; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); i = cmd.ExecuteNonQuery(); conn.Close(); } return i; } #region 執行sql返回自增ID /// <summary> /// 執行SQL語句，返回自增ID /// </summary> /// <param name="SQLString">SQL語句</param> /// <returns>影響的記錄數</returns> public static int ExecuteSQLReturnID(string SQLString, DataBaseName dataBaseName) { using (SqlConnection connection = new SqlConnection(GetEnumDes(dataBaseName.ToString()))) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); cmd.CommandText += ";\nSELECT SCOPE_IDENTITY() AS NewID;"; int id = Convert.ToInt32(cmd.ExecuteScalar()); return id; } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw e; } } } } #endregion #endregion #endregion #region 執行查詢返回第一行，第一列--------------------------------- /// <summary> /// 執行SQL語句，返回第一行，第一列 /// </summary> /// <param name="strSQL">要執行的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <param name="paras">執行類型，</param> /// <returns>返回結果</returns> public static object ExcuteScalarSQLObj(string strSQL, SqlParameter[] paras) { object i ; using (SqlConnection conn = new SqlConnection(strConn)) { SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = CommandType.Text; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); if (DBNull.Value == cmd.ExecuteScalar()) { i = null; } else { i =cmd.ExecuteScalar(); } conn.Close(); } return i; } public static int ExcuteScalarSQL(string strSQL) { return ExcuteScalarSQL(strSQL, null); } public static int ExcuteScalarSQL(string strSQL, SqlParameter[] paras) { return ExcuteScalarSQL(strSQL, paras, CommandType.Text); } public static int ExcuteScalarProc(string strSQL, SqlParameter[] paras) { return ExcuteScalarSQL(strSQL, paras, CommandType.StoredProcedure); } /// <summary> /// 執行SQL語句，返回第一行，第一列 /// </summary> /// <param name="strSQL">要執行的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <returns>返回影響行數</returns> public static int ExcuteScalarSQL(string strSQL, SqlParameter[] paras, CommandType cmdType) { int i = 0; using (SqlConnection conn = new SqlConnection(strConn)) { SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = cmdType; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); if (DBNull.Value == cmd.ExecuteScalar()) { i = 0; } else { i = Convert.ToInt32(cmd.ExecuteScalar()); } conn.Close(); } return i; } #region 根據枚舉連接數據庫 public static int ExcuteScalarSQL(string strSQL, DataBaseName dataBaseName) { return ExcuteScalarSQL(strSQL, null); } public static int ExcuteScalarSQL(string strSQL, SqlParameter[] paras, DataBaseName dataBaseName) { return ExcuteScalarSQL(strSQL, paras, CommandType.Text, dataBaseName); } public static int ExcuteScalarProc(string strSQL, SqlParameter[] paras, DataBaseName dataBaseName) { return ExcuteScalarSQL(strSQL, paras, CommandType.StoredProcedure, dataBaseName); } /// <summary> /// 執行SQL語句，返回第一行，第一列 /// </summary> /// <param name="strSQL">要執行的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <returns>返回影響行數</returns> public static int ExcuteScalarSQL(string strSQL, SqlParameter[] paras, CommandType cmdType, DataBaseName dataBaseName) { int i = 0; using (SqlConnection conn = new SqlConnection(GetEnumDes(dataBaseName.ToString()))) { SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = cmdType; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); if (DBNull.Value == cmd.ExecuteScalar()) { i = 0; } else { i = Convert.ToInt32(cmd.ExecuteScalar()); } conn.Close(); } return i; } #endregion #endregion #region 查詢獲取單個值------------------------------------ /// <summary> /// 調用不帶參數的存儲過程獲取單個值 /// </summary> /// <param name="ProcName"></param> /// <returns></returns> public static object GetObjectByProc(string ProcName) { return GetObjectByProc(ProcName, null); } /// <summary> /// 調用帶參數的存儲過程獲取單個值 /// </summary> /// <param name="ProcName"></param> /// <param name="paras"></param> /// <returns></returns> public static object GetObjectByProc(string ProcName, SqlParameter[] paras) { return GetObject(ProcName, paras, CommandType.StoredProcedure); } /// <summary> /// 根據sql語句獲取單個值 /// </summary> /// <param name="strSQL"></param> /// <returns></returns> public static object GetObject(string strSQL) { return GetObject(strSQL, null); } /// <summary> /// 根據sql語句 和 參數數組獲取單個值 /// </summary> /// <param name="strSQL"></param> /// <param name="paras"></param> /// <returns></returns> public static object GetObject(string strSQL, SqlParameter[] paras) { return GetObject(strSQL, paras, CommandType.Text); } /// <summary> /// 執行SQL語句，返回首行首列 /// </summary> /// <param name="strSQL">要執行的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <returns>返回的首行首列</returns> public static object GetObject(string strSQL, SqlParameter[] paras, CommandType cmdtype) { object o = null; using (SqlConnection conn = new SqlConnection(strConn)) { SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = cmdtype; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); o = cmd.ExecuteScalar(); conn.Close(); } return o; } #region 根據枚舉連接數據庫 /// <summary> /// 調用不帶參數的存儲過程獲取單個值 /// </summary> /// <param name="ProcName"></param> /// <returns></returns> public static object GetObjectByProc(string ProcName, DataBaseName dataBaseName) { return GetObjectByProc(ProcName, null, dataBaseName); } /// <summary> /// 調用帶參數的存儲過程獲取單個值 /// </summary> /// <param name="ProcName"></param> /// <param name="paras"></param> /// <returns></returns> public static object GetObjectByProc(string ProcName, SqlParameter[] paras, DataBaseName dataBaseName) { return GetObject(ProcName, paras, CommandType.StoredProcedure, dataBaseName); } /// <summary> /// 根據sql語句獲取單個值 /// </summary> /// <param name="strSQL"></param> /// <returns></returns> public static object GetObject(string strSQL, DataBaseName dataBaseName) { return GetObject(strSQL, null, dataBaseName); } /// <summary> /// 根據sql語句 和 參數數組獲取單個值 /// </summary> /// <param name="strSQL"></param> /// <param name="paras"></param> /// <returns></returns> public static object GetObject(string strSQL, SqlParameter[] paras, DataBaseName dataBaseName) { return GetObject(strSQL, paras, CommandType.Text, dataBaseName); } /// <summary> /// 執行SQL語句，返回首行首列 /// </summary> /// <param name="strSQL">要執行的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <returns>返回的首行首列</returns> public static object GetObject(string strSQL, SqlParameter[] paras, CommandType cmdtype, DataBaseName dataBaseName) { object o = null; using (SqlConnection conn = new SqlConnection(GetEnumDes(dataBaseName.ToString()))) { SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = cmdtype; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); o = cmd.ExecuteScalar(); conn.Close(); } return o; } #endregion #endregion #region 查詢獲取DataReader------------------------------------ /// <summary> /// 調用不帶參數的存儲過程，返回DataReader對象 /// </summary> /// <param name="procName">存儲過程名稱</param> /// <returns>DataReader對象</returns> public static SqlDataReader GetReaderByProc(string procName) { return GetReaderByProc(procName, null); } /// <summary> /// 調用帶有參數的存儲過程，返回DataReader對象 /// </summary> /// <param name="procName">存儲過程名</param> /// <param name="paras">參數數組</param> /// <returns>DataReader對象</returns> public static SqlDataReader GetReaderByProc(string procName, SqlParameter[] paras) { return GetReader(procName, paras, CommandType.StoredProcedure); } /// <summary> /// 根據sql語句返回DataReader對象 /// </summary> /// <param name="strSQL">sql語句</param> /// <returns>DataReader對象</returns> public static SqlDataReader GetReader(string strSQL) { return GetReader(strSQL, null); } /// <summary> /// 根據sql語句和參數返回DataReader對象 /// </summary> /// <param name="strSQL">sql語句</param> /// <param name="paras">參數數組</param> /// <returns>DataReader對象</returns> public static SqlDataReader GetReader(string strSQL, SqlParameter[] paras) { return GetReader(strSQL, paras, CommandType.Text); } /// <summary> /// 查詢SQL語句獲取DataReader /// </summary> /// <param name="strSQL">查詢的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <returns>查詢到的DataReader（關閉該對象的時候，自動關閉連接）</returns> public static SqlDataReader GetReader(string strSQL, SqlParameter[] paras, CommandType cmdtype) { SqlDataReader sqldr = null; SqlConnection conn = new SqlConnection(strConn); SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = cmdtype; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); //CommandBehavior.CloseConnection的作用是如果關聯的DataReader對象關閉，則連接自動關閉 sqldr = cmd.ExecuteReader(CommandBehavior.CloseConnection); return sqldr; } #region 根據枚舉連接數據庫 /// <summary> /// 調用不帶參數的存儲過程，返回DataReader對象 /// </summary> /// <param name="procName">存儲過程名稱</param> /// <returns>DataReader對象</returns> public static SqlDataReader GetReaderByProc(string procName, DataBaseName dataBaseName) { return GetReaderByProc(procName, null, dataBaseName); } /// <summary> /// 調用帶有參數的存儲過程，返回DataReader對象 /// </summary> /// <param name="procName">存儲過程名</param> /// <param name="paras">參數數組</param> /// <returns>DataReader對象</returns> public static SqlDataReader GetReaderByProc(string procName, SqlParameter[] paras, DataBaseName dataBaseName) { return GetReader(procName, paras, CommandType.StoredProcedure, dataBaseName); } /// <summary> /// 根據sql語句返回DataReader對象 /// </summary> /// <param name="strSQL">sql語句</param> /// <returns>DataReader對象</returns> public static SqlDataReader GetReader(string strSQL, DataBaseName dataBaseName) { return GetReader(strSQL, null, dataBaseName); } /// <summary> /// 根據sql語句和參數返回DataReader對象 /// </summary> /// <param name="strSQL">sql語句</param> /// <param name="paras">參數數組</param> /// <returns>DataReader對象</returns> public static SqlDataReader GetReader(string strSQL, SqlParameter[] paras, DataBaseName dataBaseName) { return GetReader(strSQL, paras, CommandType.Text, dataBaseName); } /// <summary> /// 查詢SQL語句獲取DataReader /// </summary> /// <param name="strSQL">查詢的SQL語句</param> /// <param name="paras">參數列表，沒有參數填入null</param> /// <returns>查詢到的DataReader（關閉該對象的時候，自動關閉連接）</returns> public static SqlDataReader GetReader(string strSQL, SqlParameter[] paras, CommandType cmdtype, DataBaseName dataBaseName) { SqlDataReader sqldr = null; SqlConnection conn = new SqlConnection(GetEnumDes(dataBaseName.ToString())); SqlCommand cmd = new SqlCommand(strSQL, conn); cmd.CommandType = cmdtype; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); //CommandBehavior.CloseConnection的作用是如果關聯的DataReader對象關閉，則連接自動關閉 sqldr = cmd.ExecuteReader(CommandBehavior.CloseConnection); return sqldr; } #endregion #endregion #region 批量插入數據--------------------------------------------- /// <summary> /// 往數據庫中批量插入數據 /// </summary> /// <param name="sourceDt">數據源表</param> /// <param name="targetTable">服務器上目標表</param> public static void BulkToDB(DataTable sourceDt, string targetTable) { SqlConnection conn = new SqlConnection(strConn); SqlBulkCopy bulkCopy = new SqlBulkCopy(conn); //用其它源的數據有效批量加載sql server表中 bulkCopy.DestinationTableName = targetTable; //服務器上目標表的名稱 bulkCopy.BatchSize = sourceDt.Rows.Count; //每一批次中的行數 try { conn.Open(); if (sourceDt != null && sourceDt.Rows.Count != 0) bulkCopy.WriteToServer(sourceDt); //將提供的數據源中的所有行復制到目標表中 } catch (Exception ex) { throw ex; } finally { conn.Close(); if (bulkCopy != null) bulkCopy.Close(); } } #region 根據枚舉連接數據庫 /// <summary> /// 往數據庫中批量插入數據 /// </summary> /// <param name="sourceDt">數據源表</param> /// <param name="targetTable">服務器上目標表</param> public static void BulkToDB(DataTable sourceDt, string targetTable, DataBaseName dataBaseName) { SqlConnection conn = new SqlConnection(GetEnumDes(dataBaseName.ToString())); SqlBulkCopy bulkCopy = new SqlBulkCopy(conn); //用其它源的數據有效批量加載sql server表中 bulkCopy.DestinationTableName = targetTable; //服務器上目標表的名稱 bulkCopy.BatchSize = sourceDt.Rows.Count; //每一批次中的行數 try { conn.Open(); if (sourceDt != null && sourceDt.Rows.Count != 0) bulkCopy.WriteToServer(sourceDt); //將提供的數據源中的所有行復制到目標表中 } catch (Exception ex) { throw ex; } finally { conn.Close(); if (bulkCopy != null) bulkCopy.Close(); } } #endregion #endregion #region 根據枚舉返回數據庫連接字符串 public static string GetEnumDes(string dataBaseName) { string conn = string.Empty; if (dataBaseName == "集團商務") { conn = ConfigurationManager.AppSettings["JiTuanShangWuDB"].ToString(); } else if (dataBaseName == "數據平台") { conn = ConfigurationManager.AppSettings["ShuJuPingTai"].ToString(); } else if (dataBaseName == "牛經紀") { conn = ConfigurationManager.AppSettings["NiuJingJi"].ToString(); } else if (dataBaseName == "會員") { conn = ConfigurationManager.AppSettings["MobilePlatformDB"].ToString(); } else if (dataBaseName == "電商官網") { conn = ConfigurationManager.AppSettings["ElectricityDB"].ToString(); } else if (dataBaseName == "數據平台DI") { conn = ConfigurationManager.AppSettings["ShuJuPingTaiDI"].ToString(); } else { conn = ConfigurationManager.AppSettings["JiTuanShangWuDB"].ToString(); } return conn; } #endregion #region MyRegion 執行事務邏輯 /// <summary> /// 有鎖的事務方法 插入數據 /// </summary> /// <param name="tran"></param> /// <param name="sql"></param> /// <param name="pms"></param> /// <returns></returns> public static int ExecuteNonQuery(IDbTransaction tran, string sql, params SqlParameter[] pms) { using (SqlCommand cmd = new SqlCommand(sql, (SqlConnection)tran.Connection, (SqlTransaction)tran)) { if (pms != null) { cmd.Parameters.AddRange(pms); } return cmd.ExecuteNonQuery(); } } #endregion } #region 數據庫--枚舉（DataBaseName） /// <summary> /// 數據庫類型枚舉：集團商務、牛經紀 /// </summary> public enum DataBaseName { 集團商務, 數據平台, 牛經紀, 會員, 電商官網, 數據平台DI } #endregion #region MyRegion 事務sql public class TransactionDal { public string CreateConnection = string.Empty; public DbConnection dbconnection = null; public DbTransaction transaction = null; public TransactionDal(string Connection) { CreateConnection = Connection; } public void BeginTransaction() { dbconnection = new SqlConnection(CreateConnection); dbconnection.Open(); transaction = dbconnection.BeginTransaction(); } public void CommitTransaction() { if (null != transaction) { transaction.Commit(); } } public void RollbackTransaction() { if (null != transaction) { transaction.Rollback(); } } public void DisposeTransaction() { if (dbconnection.State == ConnectionState.Open) { dbconnection.Close(); } if (null != transaction) { transaction.Dispose(); } } } #endregion }
3、調用存儲過程實例：
SqlParameter[] param = new SqlParameter[] { new SqlParameter("@type", 0), new SqlParameter("@BaseID", 0), new SqlParameter("@FenGongSiID",model.tb_diqu) } BaseID = DbHelper.ExcuteProc("Proc_Base_Add", param);
4、修改實例：
public ActionResult HuiFuKeHu(int baseid) { var sql = string.Format(@"UPDATE BaseTable SET ZhuangTai=0 WHERE BaseID={0}", baseid); var re = DbHelper.ExcuteSQL(sql); var restr = ""; if (re > 0) restr = "ok"; else restr = "no"; return Json(new { y = restr }); }
5、分頁幫助類：
using System; using System.Collections.Generic; using System.Data; using System.Data.SqlClient; using System.Linq; using System.Text; using System.Web; namespace SwbAPI { public class PagingHelper { /// <summary> /// 獲取分頁SQL語句，默認row_number為關健字，所有表不允許使用該字段名 /// </summary> /// <param name="_pageSize">每頁記錄數</param> /// <param name="_pageIndex">當前頁數</param> /// <param name="_columnSql">查詢列</param> /// <param name="_fromSql">from后sql</param> /// <param name="_orderField">排序字段，多個則用“,”隔開</param> /// <returns>分頁SQL語句</returns> public static DataSet GetPagingData(int _pageSize, int _pageIndex, string _columnSql, string _fromSql, string _orderField) { DataSet ds = null; //檢查當前頁數 if (_pageIndex < 1) { _pageIndex = 1; } //分頁sql，拼接SQL字符串，加上ROW_NUMBER函數進行分頁 StringBuilder newSafeSql = new StringBuilder(); newSafeSql.AppendFormat("SELECT ROW_NUMBER() OVER(ORDER BY {0}) as ROWID,", _orderField); newSafeSql.AppendFormat("{0} from {1}", _columnSql, _fromSql); //拼接成最終的SQL語句 StringBuilder sbSql = new StringBuilder(); sbSql.Append("SELECT * FROM ("); sbSql.Append(newSafeSql.ToString()); sbSql.Append(") AS T"); sbSql.AppendFormat(" WHERE ROWID between {0} and {1}", ((_pageIndex - 1) * _pageSize) + 1, _pageIndex * _pageSize); // 總條數sql sbSql.AppendFormat(";select count(1) Total from " + _fromSql); sbSql.ToString(); ds = DbHelper.GetDataSet(sbSql.ToString()); return ds; } #region 根據枚舉返回數據庫連接字符串 /// <summary> /// 獲取分頁SQL語句，默認row_number為關健字，所有表不允許使用該字段名 /// </summary> /// <param name="_pageSize">每頁記錄數</param> /// <param name="_pageIndex">當前頁數</param> /// <param name="_columnSql">查詢列</param> /// <param name="_fromSql">from后sql</param> /// <param name="_orderField">排序字段，多個則用“,”隔開</param> /// <returns>分頁SQL語句</returns> public static DataSet GetPagingData(int _pageSize, int _pageIndex, string _columnSql, string _fromSql, string _orderField, DataBaseName dataBaseName) { DataSet ds = null; //檢查當前頁數 if (_pageIndex < 1) { _pageIndex = 1; } //分頁sql，拼接SQL字符串，加上ROW_NUMBER函數進行分頁 StringBuilder newSafeSql = new StringBuilder(); newSafeSql.AppendFormat("SELECT ROW_NUMBER() OVER(ORDER BY {0}) as ROWID,", _orderField); newSafeSql.AppendFormat("{0} from {1}", _columnSql, _fromSql); //拼接成最終的SQL語句 StringBuilder sbSql = new StringBuilder(); sbSql.Append("SELECT * FROM ("); sbSql.Append(newSafeSql.ToString()); sbSql.Append(") AS T"); sbSql.AppendFormat(" WHERE ROWID between {0} and {1}", ((_pageIndex - 1) * _pageSize) + 1, _pageIndex * _pageSize); // 總條數sql sbSql.AppendFormat(";select count(1) Total from " + _fromSql); sbSql.ToString(); ds = DbHelper.GetDataSet(sbSql.ToString(),dataBaseName); return ds; } #endregion #region 根據枚舉返回數據庫連接字符串 /// <summary> /// 獲取分頁SQL語句，默認row_number為關健字，所有表不允許使用該字段名 /// </summary> /// <param name="_pageSize">每頁記錄數</param> /// <param name="_pageIndex">當前頁數</param> /// <param name="_columnSql">查詢列</param> /// <param name="_fromSql">from后sql</param> /// <param name="_orderField">排序字段，多個則用“,”隔開</param> /// <returns>分頁SQL語句</returns> public static DataSet GetPagingData(int _pageSize, int _pageIndex, string _columnSql, string _fromSql,SqlParameter[] param, string _orderField, DataBaseName dataBaseName) { DataSet ds = null; //檢查當前頁數 if (_pageIndex < 1) { _pageIndex = 1; } //分頁sql，拼接SQL字符串，加上ROW_NUMBER函數進行分頁 StringBuilder newSafeSql = new StringBuilder(); newSafeSql.AppendFormat("SELECT ROW_NUMBER() OVER(ORDER BY {0}) as ROWID,", _orderField); newSafeSql.AppendFormat("{0} from {1}", _columnSql, _fromSql); //拼接成最終的SQL語句 StringBuilder sbSql = new StringBuilder(); sbSql.Append("SELECT * FROM ("); sbSql.Append(newSafeSql.ToString()); sbSql.Append(") AS T"); sbSql.AppendFormat(" WHERE ROWID between {0} and {1}", ((_pageIndex - 1) * _pageSize) + 1, _pageIndex * _pageSize); // 總條數sql sbSql.AppendFormat(";select count(1) Total from " + _fromSql); sbSql.ToString(); ds = DbHelper.GetDataSet(sbSql.ToString(), param, dataBaseName); return ds; } #endregion } }
6、分頁調用：
public ActionResult GetQuDaoList(Sw_QuDao model) { //int PageIndex, int PageSize #region where處理 string where = string.Empty; if (Utils.isNoNullInt32(model.tb_diqu??0)) where += string.Format(" and q.tb_diqu={0}", model.tb_diqu); if (!string.IsNullOrWhiteSpace(model.TimeStart)) where += string.Format(" and q.TianJiaShiJian>='{0}'",Convert.ToDateTime( model.TimeStart).ToString("yyyy-MM-dd")); if (!string.IsNullOrWhiteSpace(model.TimeEnd)) where += string.Format(" and q.TianJiaShiJian<'{0}'", Convert.ToDateTime(model.TimeEnd).AddDays(1).ToString("yyyy-MM-dd")); #endregion #region sql string fromSql = string.Format("Sw_QuDao q LEFT JOIN dbo.V_DiQu d ON q.tb_diqu=d.tb_diqu where 1=1 {0}", where); string column = "q.ID,d.DiQuName,q.MingCheng,q.WangZhi,q.XinZengLiang,q.PaiXu,q.ZhuangTai,q.TianJiaShiJian"; string sql = string.Format(@" WITH PagedCTE AS( SELECT ROW_NUMBER() OVER(ORDER BY q.PaiXu asc,q.TianJiaShiJian desc) ROWID,{3} FROM {0} ) SELECT * FROM PagedCTE WHERE RowID BETWEEN ({1}-1)*{2} + 1 AND {1} * {2}; SELECT COUNT(1) Total FROM {0} ", fromSql, model.PageIndex, model.PageSize, column); #endregion //DataSet ds = DbHelper.GetDataSet(sql); DataSet ds = PagingHelper.GetPagingData(model.PageSize, model.PageIndex, column, fromSql, "q.PaiXu asc,q.TianJiaShiJian desc"); return Content(ds.ToJson()); }