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171 lines
5.3 KiB
171 lines
5.3 KiB
using System;
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using System.Collections.Generic;
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using System.Web;
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using System.Data;
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using System.Data.SqlClient;
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using System.Configuration;
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using System.Text;
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/// <summary>
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///DBacess 的摘要说明
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/// </summary>
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namespace basic
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{
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public class DBacess
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{
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/// <summary>
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/// 创建活动SqlConnection
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/// </summary>
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/// <returns>SqlConnection</returns>
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///
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public static SqlConnection con;
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private static SqlConnection connection()
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{
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SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["ConnectionString"].ToString());
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con = conn;
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return conn;
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}
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/// <summary>
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/// 打开连接数据库
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/// </summary>
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/// <param name="conn">SqlConnection对象</param>
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private void OpenConnection(SqlConnection conn)
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{
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if (conn != null && conn.State == ConnectionState.Closed)
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conn.Open();
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}
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/// <summary>
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/// 关闭数据库
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/// </summary>
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/// <param name="conn">SqlConnection对象</param>
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private void CloseConnection(SqlConnection conn)
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{
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if (conn != null && conn.State == ConnectionState.Open)
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conn.Close();
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}
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/// <summary>
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/// 更新数据库
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="parameters"></param>
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/// <param name="type"></param>
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/// <returns></returns>
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public bool Update(string sql, SqlParameter[] parameters, CommandType type)
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{
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SqlConnection conn = connection();
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bool result = false;
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try
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{
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using (conn)
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{
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SqlCommand cmd = new SqlCommand(sql, conn);
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if (parameters != null)
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{
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foreach (SqlParameter parameter in parameters)
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{
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if (parameters != null && parameter.ParameterName != "")
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{
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cmd.Parameters.Add(parameter);
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}
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}
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}
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cmd.CommandType = type;
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cmd.Connection.Open();
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int flag = cmd.ExecuteNonQuery();
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if (flag > 0)
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result = true;
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}
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}
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finally
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{
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CloseConnection(conn);
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}
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return result;
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}
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/// <summary>
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/// 根据条件查询数据
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="parameters"></param>
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/// <returns>DataTable</returns>
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public DataTable SelectReturnDataTable(string sql, SqlParameter[] parameters)
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{
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SqlConnection conn = connection();
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DataTable dt = new DataTable();
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try
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{
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using (conn)
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{
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SqlCommand cmd = new SqlCommand(sql, conn);
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if (parameters != null)
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{
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foreach (SqlParameter parameter in parameters)
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{
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if (parameter != null && parameter.ParameterName != "")
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{
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cmd.Parameters.Add(parameter);
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}
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}
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}
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conn.Open();
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SqlDataAdapter sda = new SqlDataAdapter(cmd);
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sda.Fill(dt);
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}
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}
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//catch (Exception e)
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//{
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//}
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finally
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{
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CloseConnection(conn);
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}
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return dt;
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}
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/// <summary>
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/// 根据条件查询数据
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="parameters"></param>
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/// <returns>DataSet</returns>
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public DataSet SelectReturnDataSet(string sql, SqlParameter[] parameters)
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{
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SqlConnection conn = connection();
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DataSet ds = new DataSet();
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try
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{
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using (conn)
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{
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SqlCommand cmd = new SqlCommand(sql, conn);
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if (parameters != null)
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{
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foreach (SqlParameter parameter in parameters)
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{
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if (parameter != null && parameter.ParameterName != "")
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{
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cmd.Parameters.Add(parameter);
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}
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}
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}
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conn.Open();
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SqlDataAdapter sda = new SqlDataAdapter(cmd);
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sda.Fill(ds);
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}
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}
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//catch (Exception e)
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//{
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//}
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finally
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{
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CloseConnection(conn);
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}
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return ds;
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}
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}
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}
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