c#连接oracle数据库DBHelper
闲着没事⾃⼰写了⼀个OracleHelper类，希望⼤神给点建议优化
1using System;
2using System.Collections.Generic;
3using System.Linq;
4using System.Web;
5using System.Data;
6using System.Data.OracleClient;
7
8namespace Common
9 {
10public class DBHelper
11    {
12private string connectionstring { get; set; } = System.Configuration.ConfigurationManager.ConnectionStrings["cms_mh"].ConnectionString; 13
14public DBHelper()
15        {
16            OpenConnection();
17        }
18
19///<summary>
20///根据配置节读取连接数据库
21///</summary>
22///<param name="key">需要连接的数据库</param>
23public DBHelper(string key)
24        {
26            OpenConnection();
27        }
28
29///<summary>
30///定义Oracle连接
31///</summary>
32private OracleConnection conn { get; set; }
33
34private OracleCommand cmd;
35///<summary>
36///打开连接
37///</summary>
38public void OpenConnection()
39        {
40if (conn == null)
41                conn = new OracleConnection(connectionstring);
42if (conn.State == ConnectionState.Closed)
43                conn.Open();
44        }
45
46///<summary>
47///构建返回Command
48///</summary>
49///<param name="cmdText">CommandText</param>
50///<param name="cmd">需要返回的Command</param>
51///<param name="cmdType">执⾏类型</param>
52///<param name="param">参数列表</param>
53public void BuilderCommand(string cmdText, out OracleCommand cmd, CommandType cmdType, params OracleParameter[] param)
54        {
55            cmd = new OracleCommand();
56            cmd.Connection = conn;
57            cmd = conn.CreateCommand();
58            cmd.CommandType = cmdType;
59            cmd.CommandText = cmdText;
60foreach (var item in param)
62                cmd.Parameters.Add(item);
63            }
64        }
65
66///<summary>
67///执⾏存储过程
68///</summary>
param name69///<param name="storedName">存储过程名称</param>
70///<param name="param">参数列表</param>
71///<returns>返回执⾏成功条数</returns>
72public int ExecuteStored(string storedName, params OracleParameter[] param)
73        {
74            BuilderCommand(storedName, out cmd, CommandType.StoredProcedure, param);
75return cmd.ExecuteNonQuery();
76        }
77
78///<summary>
79///获取DataSet
80///</summary>
81///<param name="cmdText">执⾏语句</param>
82///<returns>DataSet</returns>
83public DataSet GetDateSet(string cmdText, params OracleParameter[] param)
84        {
85using (OracleDataAdapter _da = new OracleDataAdapter(cmdText, conn))
86            {
87                DataSet ds = new DataSet();
88                _da.Fill(ds);
89return ds;
90            }
91        }
92
93///<summary>
94///获取Table
95///</summary>
96///<param name="cmdText">执⾏语句</param>
97///<returns>DataTable</returns>
98public DataTable GetTable(string cmdText)
99        {
100return GetDateSet(cmdText).Tables[0];
101        }
102
103///<summary>
104///执⾏sql
105///</summary>
106///<param name="cmdText">执⾏语句</param>
107///<param name="param">执⾏所需参数</param>
108///<returns>成功执⾏数</returns>
109public int ExecuteSql(string cmdText, params OracleParameter[] param)
110        {
111            OracleCommand cmd = new OracleCommand();
112            BuilderCommand(cmdText, out cmd, CommandType.Text, param);
113return cmd.ExecuteNonQuery();
114        }
115
116///<summary>
117///构建DataReader
118///</summary>
119///<param name="cmdText">执⾏语句</param>
120///<param name="param">执⾏所需参数</param>
121///<returns>DataReader</returns>
122public OracleDataReader BuilderDataReader(string cmdText, params OracleParameter[] param) 123        {
124            BuilderCommand(cmdText, out cmd, CommandType.Text, param);
125return cmd.ExecuteReader();
127    } 128 }

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