zoukankan      html  css  js  c++  java
  • SqlHelper

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Data;
    using System.Data.SqlClient;
    using System.Configuration;
    using System.Xml;

    /// <summary>
    ///SqlCon 的摘要说明
    /// </summary>
    public class SqlHelper
    {
    private static SqlConnection con;
    private static SqlConnection Con
    {

    get
    {
    string conString = ConfigurationManager.ConnectionStrings["XjhDemo"].ConnectionString;
    if (con == null)
    {
    con = new SqlConnection(conString);

    }

    if (con.State == ConnectionState.Closed || con.State == ConnectionState.Broken)
    {
    con.Open();
    }
    return con;
    }
    }
    /// <summary>
    /// 调用命令对象的ExecuteNonQuery的重载之执行存储过程
    /// </summary>
    /// <param name="safeSql">存储过程名</param>
    /// <param name="values">存储过程需要的参数</param>
    /// <returns>受影响的行数</returns>
    ///
    public static int ExecuteCommand(string safeSql, params SqlParameter[] values)
    {
    SqlCommand cmd = new SqlCommand(safeSql, Con);
    cmd.CommandType = CommandType.StoredProcedure;
    if (values != null)
    {
    cmd.Parameters.AddRange(values);
    }
    int result = cmd.ExecuteNonQuery();
    cmd.Connection.Close();
    return result;
    }
    public static int ExecuteCommand(string safeSql,out SqlCommand command, params SqlParameter[] values)
    {
    SqlCommand cmd = new SqlCommand(safeSql, Con);
    cmd.CommandType = CommandType.StoredProcedure;
    if (values != null)
    {
    cmd.Parameters.AddRange(values);
    }
    int result = cmd.ExecuteNonQuery();
    cmd.Connection.Close();
    command = cmd;
    return result;
    }
    public static SqlDataReader GetReader(string safeSql, params SqlParameter[] values)
    {
    SqlCommand cmd = new SqlCommand(safeSql,Con);
    cmd.CommandType = CommandType.StoredProcedure;
    if (values != null)
    {
    cmd.Parameters.AddRange(values);
    }
    SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
    return reader;
    }
    public static DataTable GetDatatable(string safeSql, params SqlParameter[] values)
    {
    DataTable table = new DataTable();
    SqlDataReader reader = GetReader(safeSql, values);
    table.Load(reader);
    reader.Close();
    return table;
    }
    public static DataTable GetDataTable(string safeSql, out SqlCommand command, params SqlParameter[] values)
    {
    SqlCommand cmd = new SqlCommand(safeSql, Con);
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.CommandText = safeSql;
    cmd.Parameters.AddRange(values);
    SqlDataReader reader = cmd.ExecuteReader();
    DataTable table = new DataTable();
    table.Load(reader);
    reader.Close();
    cmd.Connection.Close();
    command = cmd;
    return table;
    }

    // <summary>
    /// 调用命令对象的ExecuteScalar的重载之执行存储过程(标量查询)
    /// </summary>
    /// <param name="safeSql">存储过程名</param>
    /// <returns>查询结果</returns>
    public static object GetScalar(string safeSql, params SqlParameter[] values)
    {
    SqlCommand cmd = new SqlCommand(safeSql, Con);
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.Parameters.AddRange(values);
    object result = cmd.ExecuteScalar();
    cmd.Connection.Close();
    return result;
    }
    public static string GetXReader(string safeSql, out SqlCommand command, params SqlParameter[] values)
    {
    SqlCommand cmd = new SqlCommand(safeSql, Con);
    cmd.CommandType = CommandType.StoredProcedure;
    if (values != null)
    {
    cmd.Parameters.AddRange(values);
    }
    XmlReader xreader = cmd.ExecuteXmlReader();
    xreader.Read();
    string xml = xreader.ReadOuterXml();
    xreader.Close();
    con.Close();
    command = cmd;
    return xml;
    }

    }

  • 相关阅读:
    【BZOJ5306】染色(HAOI2018)-容斥原理+NTT
    【BZOJ3129】方程(SDOI2013)-容斥原理+扩展Lucas定理
    【BZOJ3876】支线剧情(AHOI&JSOI2014)-有上下界费用流
    【POJ1149】PIGS-最大流+优化建模
    【BZOJ1941】Hide and Seek(SDOI2010)-KD树
    【BZOJ1834】网络扩容(ZJOI2010)-最大流+费用流+拆边
    【BZOJ1927】星际竞速(SCOI2010)-费用流+拆点
    【BZOJ4872】分手是祝愿(六省联考2017)-期望DP
    【BZOJ2879】美食节(NOI2012)-费用流+拆点+动态加边
    JQ简单图片轮播
  • 原文地址:https://www.cnblogs.com/simpleBlue3/p/3879495.html
Copyright © 2011-2022 走看看