C# 连接SQLSERVER数据库常用操作类
/// <summary> /// 增删改操作类 /// </summary> /// <param name="sql">执行的sql</param> /// <returns></returns> public static int ExecuteSql(string sql) { try { using (SqlConnection con = new SqlConnection(connectStr)) { con.Open(); using (SqlCommand cmd = new SqlCommand(sql, con)) { return cmd.ExecuteNonQuery(); } } } catch (Exception ex) { throw ex; } } /// <summary> /// 查询sql /// </summary> /// <param name="sql">查询语句sql</param> /// <returns></returns> public static DataSet Query(string sql) { DataSet ds = new DataSet(); try { using (SqlConnection con = new SqlConnection(connectStr)) { con.Open(); using (SqlDataAdapter cmd = new SqlDataAdapter(sql, con)) { cmd.Fill(ds); return ds; } } } catch (Exception) { throw; } } /// <summary> /// 执行增删改查存储过程 /// </summary> /// <param name="ProcName">存储过程名</param> /// <param name="parameter">存储过程参数</param> /// <returns></returns> public static int ExecuteProc(string ProcName, SqlParameter[] parameter) { try { using (SqlConnection con = new SqlConnection(connectStr)) { con.Open(); using (SqlCommand cmd = new SqlCommand()) { cmd.CommandText = ProcName; cmd.CommandType = CommandType.StoredProcedure; cmd.Connection = con; for (int i = 0; i < parameter.Length; i++) { cmd.Parameters.Add(parameter[i]); } return cmd.ExecuteNonQuery(); } } } catch (Exception) { throw; } } /// <summary> /// 执行查询的存储过程 /// </summary> /// <param name="ProcName">存储过程名</param> /// <param name="parameter">存储过程参数</param> /// <returns></returns> public static DataSet ExecuteProcQuery(string ProcName, SqlParameter[] parameter) { DataSet ds = new DataSet(); try { using (SqlConnection con = new SqlConnection(connectStr)) { con.Open(); using (SqlCommand cmd = new SqlCommand()) { cmd.CommandText = ProcName; cmd.CommandType = CommandType.StoredProcedure; cmd.Connection = con; for (int i = 0; i < parameter.Length; i++) { cmd.Parameters.Add(parameter[i]); } SqlDataAdapter dt = new SqlDataAdapter(cmd); dt.Fill(ds); return ds; } } } catch (Exception) { throw; } } /// <summary> /// 执行带输出值的存储过程(返回值) /// </summary> /// <param name="ProcName">存储过程名</param> /// <param name="parameter">参数</param> /// <param name="RParamer">返回值名</param> /// <param name="direction">返回值参数类型</param> /// <returns>SDB_Helper.ExecuteProc("test",parameter,"count", ParameterDirection.Output);</returns> public static string ExecuteProc(string ProcName, SqlParameter[] parameter, string RParamer, ParameterDirection direction) { DataSet ds = new DataSet(); using (SqlConnection con = new SqlConnection(connectStr)) { con.Open(); using (SqlCommand cmd = new SqlCommand()) { cmd.CommandText = ProcName; cmd.CommandType = CommandType.StoredProcedure; for (int i = 0; i < parameter.Length; i++) { cmd.Parameters.Add(parameter[i]); if (parameter[i].ParameterName == "@" + RParamer) { cmd.Parameters[i].Direction = direction; } } cmd.Connection = con; SqlDataAdapter dt = new SqlDataAdapter(cmd); dt.Fill(ds); string tem = cmd.Parameters["@count"].Value.ToString(); return tem; } } } /// <summary> /// 执行事务 /// </summary> /// <param name="sqls">执行的所有sql语句</param> /// <returns></returns> public static int ExecuteTranction(string sqls) { try { using (SqlConnection con = new SqlConnection(connectStr)) { con.Open(); using (SqlTransaction transaction = con.BeginTransaction()) { using (SqlCommand cmd = new SqlCommand()) { try { cmd.CommandText = sqls; cmd.Connection = con; cmd.Transaction = transaction; int i = cmd.ExecuteNonQuery(); transaction.Commit(); return i; } catch (Exception) { transaction.Rollback(); return 0; } } } } } catch (Exception) { return 0; } }
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