asp.net+mysql站点数据的操作

Posted 2020-06-11

 1 using System;
 2 using System.Data;
 3 using System.Text;
 4 using System.Configuration;
 5 using System.Web;
 6 using System.Web.Security;
 7 using System.Web.UI;
 8 using System.Web.UI.htmlControls;
 9 using System.Web.UI.WebControls;
10 using System.Web.UI.WebControls.WebParts;
11 using mysql.Data.MySqlClient;//☆
12 
13 namespace DB_
14 {      
15     public class DB
16     {
17 
18         public DB()
19         {
20             // 在此处添加构造函数逻辑
21         }
22 
23         public MySqlConnection conntent()
24         {
25             string constr = "Data Source=127.0.0.1;port=3306;Database=test;User Id=root;Password=root;CharSet=utf8;allow zero datetime=true";
26             MySqlConnection con = new MySqlConnection(constr);
27             try
28             {
29                 con.Open();
30                 return con;// 成功
31             }
32             catch (Exception ex)
33             {
34                 return null;//连接打开出现异常
35             }
36         }//连接字符串，返回MySqlConnection 链接对象
37 
38         public DataSet Select(string sqlstr)//返回一个DataSet数据集或NULL
39         {
40             MySqlDataAdapter myadapter = new MySqlDataAdapter(sqlstr, conntent());
41              DataSet select = new DataSet();
42             int suc_count = myadapter.Fill(select);
43            if (select != null) { return select; }
44             else { return null; }     
45         }
46 
47         public MySqlDataReader Select1(string sqlstr)//返回一个MySqlDataReader对象，或null
48         {
49             MySqlCommand mycmd = new MySqlCommand(sqlstr,conntent());
50             try
51             {
52                 MySqlDataReader select1 = mycmd.ExecuteReader();
53                 if (select1 != null){ return select1; }
54                 else { return null; }
55             }
56             catch (Exception ex)
57             {
58                 return null;
59             }
60         }
61 
62         public bool ZSG(string sqlstr)//根据传人的sqlstr 和 连接对象，执行操作
63         {//调用ZSG()函数进行增删改的操作,成功TRUE，失败FALSE
64                 MySqlCommand mycmd = new MySqlCommand(sqlstr, conntent());
65                 try
66                 {
67                     if (mycmd.ExecuteNonQuery() > 0)
68                     {  return true;//成功 }
69                     else
70                     { return false; }
71                 }
72                 catch{  return false;  }
73         }
74     }
75 }