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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 NFine.Data.Extensions{ public class OtherSqlServerHelper { #region [ 连接串相关 ]
/// <summary>
/// 数据中心DB的连接字符串
/// </summary>
public static string ConnectionString = ConfigurationManager.ConnectionStrings["connstr"].ConnectionString; /// <summary>
/// 获取同步服务器的连接
/// </summary>
/// <returns></returns>
private static SqlConnection GetConnectionString() { return new SqlConnection(ConnectionString); }
/// <summary>
/// 根据连接串获取连接
/// </summary>
/// <returns></returns>
private static void SetConnByString(string conn) { ConnectionString = ConfigurationManager.ConnectionStrings[conn].ConnectionString; }
#endregion
#region 数据分页
/// <summary>
/// 摘要:
/// 数据分页
/// 参数：
/// sql：传入要执行sql语句
/// param：参数化
/// orderField：排序字段
/// orderType：排序类型
/// pageIndex：当前页
/// pageSize：页大小
/// count：返回查询条数
/// </summary>
public static DataTable GetPageTable(string sql, string connectstr, DbParameter[] param, string orderField, string orderType, int pageIndex, int pageSize, ref int count) { SetConnByString(connectstr);
StringBuilder strSql = new StringBuilder(); if (pageIndex == 0) { pageIndex = 1; } int num = (pageIndex - 1) * pageSize; int num1 = (pageIndex) * pageSize; string OrderBy = ""; if (!string.IsNullOrEmpty(orderField)) OrderBy = "Order By " + orderField + " " + orderType + ""; else OrderBy = "order by (select 0)"; strSql.Append("Select * From (Select ROW_NUMBER() Over (" + OrderBy + ")"); strSql.Append(" As rowNum, * From (" + sql + ") As T ) As N Where rowNum > " + num + " And rowNum <= " + num1 + ""); count = Convert.ToInt32(ExecuteScalar(CommandType.Text, "Select Count(1) From (" + sql + ") As t", param)); IDataReader dr = ExecuteReader(CommandType.Text, strSql.ToString(), param); return DatabaseReader.ReaderToDataTable(dr); }
/// <summary>
/// 摘要:
/// 数据分页
/// 参数：
/// sql：传入要执行sql语句
/// param：参数化
/// orderField：排序字段
/// orderType：排序类型
/// pageIndex：当前页
/// pageSize：页大小
/// count：返回查询条数
/// </summary>
public static DataTable GetPageTable_EXISTSTemp(string sql, string sqlTempName,string Droptable, string connectstr, DbParameter[] param, string orderField, string orderType, int pageIndex, int pageSize, ref int count) { SetConnByString(connectstr);
//StringBuilder strSql = new StringBuilder();
if (pageIndex == 0) { pageIndex = 1; } int num = (pageIndex - 1) * pageSize; int num1 = (pageIndex) * pageSize; string OrderBy = ""; if (!string.IsNullOrEmpty(orderField)) OrderBy = "Order By " + orderField + " " + orderType + ""; else OrderBy = "order by (select 0)"; //strSql.Append(sql+@" Select * From (Select ROW_NUMBER() Over (" + OrderBy + ")");
//strSql.Append(" As rowNum, * From " + sqlTempName + " ) As N Where rowNum > " + num + " And rowNum <= " + num1 + " " + Droptable);
//count = Convert.ToInt32(ExecuteScalar(CommandType.Text, sql + " Select Count(1) From " + sqlTempName +" "+ Droptable, param));
//IDataReader dr = ExecuteReader(CommandType.Text, strSql.ToString(), param);
//return DatabaseReader.ReaderToDataTable(dr);
using (SqlConnection conn = GetConnectionString()) { conn.Open(); sql += " Select Count(1) From " + sqlTempName; sql += " Select * From (Select ROW_NUMBER() Over (" + OrderBy + ") "; sql += " As rowNum, * From " + sqlTempName + " ) As N Where rowNum > " + num + " And rowNum <= " + num1 + " " ; sql += Droptable; SqlCommand cmd = new SqlCommand(sql, conn).AddTimeout(); SqlDataAdapter adapter = new SqlDataAdapter(cmd); DataSet ds = new DataSet(); adapter.Fill(ds); count = Convert.ToInt32(ds.Tables[0].Rows[0][0].ToString()); return ds.Tables[1]; } }
/// <summary>
/// 摘要:
/// 数据分页
/// 参数：
/// sql：传入要执行sql语句
/// param：参数化
/// orderField：排序字段
/// orderType：排序类型
/// pageIndex：当前页
/// pageSize：页大小
/// count：返回查询条数
/// </summary>
public static DataTable GetPageTable_EXISTSTempNew(string sql, string sqlTempName, string Droptable, string connectstr, DbParameter[] param, string orderField, string orderType, int pageIndex, int pageSize, ref int count) { SetConnByString(connectstr);
StringBuilder strSql = new StringBuilder(); if (pageIndex == 0) { pageIndex = 1; } int num = (pageIndex - 1) * pageSize; int num1 = (pageIndex) * pageSize; string OrderBy = ""; if (!string.IsNullOrEmpty(orderField)) OrderBy = "Order By " + orderField + " " + orderType + ""; else OrderBy = "order by (select 0)"; strSql.Append(sql + @" Select * From (Select ROW_NUMBER() Over (" + OrderBy + ")"); strSql.Append(" As rowNum, * From " + sqlTempName + " ) As N Where rowNum > " + num + " And rowNum <= " + num1 + " " + Droptable); count = Convert.ToInt32(ExecuteScalar(CommandType.Text, sql + " Select Count(1) From " + sqlTempName + " " + Droptable, param)); IDataReader dr = ExecuteReader(CommandType.Text, strSql.ToString(), param); return DatabaseReader.ReaderToDataTable(dr); }
/// <summary>
/// 根据sql语句和参数，返回DataTable
/// </summary>
/// <param name="sql">sql语句</param>
/// <param name="spArr">可变参数</param>
/// <returns>DataTable</returns>
public static DataTable GetDataTableBySql(string sql, string connectstr, params SqlParameter[] spArr) { SetConnByString(connectstr); using (SqlConnection conn = GetConnectionString()) { conn.Open(); SqlCommand cmd = new SqlCommand(sql, conn).AddTimeout(); if (spArr != null && spArr.Length > 0) cmd.Parameters.AddRange(spArr.SetDBNull()); DataTable dt = cmd.ExecuteDataTable(); return dt; } }
/// <summary>
/// 使用提供的参数，执行有结果集返回的数据库操作命令、并返回SqlDataReader对象
/// </summary>
/// <param name="commandType">执行命令的类型（存储过程或T-SQL，等等）</param>
/// <param name="commandText">存储过程名称或者T-SQL命令行<</param>
/// <param name="parameters">执行命令所需的sql语句对应参数</param>
/// <returns>返回SqlDataReader对象</returns>
private static IDataReader ExecuteReader(CommandType cmdType, string cmdText, params DbParameter[] parameters) { DbCommand cmd = DbFactory.CreateDbCommand(); cmd.CommandTimeout = 180; DbConnection conn = DbFactory.CreateDbConnection(ConnectionString); try { PrepareCommand(cmd, conn, null, cmdType, cmdText, parameters); IDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); cmd.Parameters.Clear(); return rdr; } catch (Exception ex) { conn.Close(); cmd.Dispose(); //log.Error(ex.Message);
throw; } }
/// <summary>
/// 依靠数据库连接字符串connectionString,
/// 使用所提供参数，执行返回首行首列命令
/// </summary>
/// <param name="commandType">执行命令的类型（存储过程或T-SQL，等等）</param>
/// <param name="commandText">存储过程名称或者T-SQL命令行</param>
/// <param name="parameters">执行命令所需的sql语句对应参数</param>
/// <returns>返回一个对象，使用Convert.To{Type}将该对象转换成想要的数据类型。</returns>
private static object ExecuteScalar(CommandType cmdType, string cmdText, params DbParameter[] parameters) { try { DbCommand cmd = DbFactory.CreateDbCommand(); cmd.CommandTimeout = 180; using (DbConnection connection = DbFactory.CreateDbConnection(ConnectionString)) { PrepareCommand(cmd, connection, null, cmdType, cmdText, parameters); object val = cmd.ExecuteScalar(); cmd.Parameters.Clear(); return val; } } catch (Exception ex) { //log.Error(ex.Message);
throw; } }
/// <summary>
/// 为即将执行准备一个命令
/// </summary>
/// <param name="cmd">SqlCommand对象</param>
/// <param name="conn">SqlConnection对象</param>
/// <param name="isOpenTrans">DbTransaction对象</param>
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
/// <param name="cmdText">存储过程名称或者T-SQL命令行, e.g. Select * from Products</param>
/// <param name="cmdParms">SqlParameters to use in the command</param>
private static void PrepareCommand(DbCommand cmd, DbConnection conn, DbTransaction isOpenTrans, CommandType cmdType, string cmdText, DbParameter[] cmdParms) { if (conn.State != ConnectionState.Open) conn.Open(); cmd.Connection = conn; cmd.CommandText = cmdText; if (isOpenTrans != null) cmd.Transaction = isOpenTrans; cmd.CommandType = cmdType; if (cmdParms != null) { cmd.Parameters.AddRange(cmdParms); } } #endregion
/// <summary>
/// 执行 SQL 语句，并返回受影响的行数。
/// </summary>
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
/// <returns></returns>
public static int ExecuteNonQuery_Other(CommandType cmdType, string cmdText, string Connect) { int num = 0; SetConnByString(Connect); try { DbCommand cmd = DbFactory.CreateDbCommand(); using (DbConnection conn = DbFactory.CreateDbConnection(ConnectionString)) { PrepareCommand(cmd, conn, null, cmdType, cmdText, null); num = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); } } catch (Exception ex) { num = -1; //log.Error(ex.Message);
} return num; } }}
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