1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Data.SQLite;
 6 using System.Drawing;
 7 using System.Linq;
 8 using System.Text;
 9 using System.Threading.Tasks;
10 using System.Windows.Forms;
11 
12 namespace T_W_sqlite
13 {
14     public partial class Form1 : Form
15     {
16         public static SQLiteConnection sqlConn;
17         public static string ConnectionString = "Data Source=E://Test.db3;Pooling=true;FailIfMissing=true";//存储公用的数据库连接字符串
18 
19         public static String StartSQLConn()
20         {
21             sqlConn = new SQLiteConnection(ConnectionString);
22             try
23             {
24                 sqlConn.Open();
25             }
26             catch
27             {
28                 sqlConn = null;
29             }
30             return "You Test Success!";
31         }
32         public Form1()
33         {
34             InitializeComponent();

35             Lable.Text = StartSQLConn();
36 
37         }
38     }
39 }

1 <?xml version="1.0" encoding="utf-8" ?>
2 <configuration>
3     <startup> 
4         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
5     </startup>
6 </configuration>

1 <?xml version="1.0" encoding="utf-8" ?>
2 <configuration>
3     <startup useLegacyV2RuntimeActivationPolicy="true"> 
4         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
5     </startup>
6 </configuration>