我正在尝试连接到笔记本电脑上存储的mysql数据库，我使用oledb连接到它，但出现错误（c＃）：
Exception thrown: 'System.InvalidOperationException' in System.Data.dll
从此行：
conn.Open();
完整代码是：
using System;
using System.Data;
using System.Data.OleDb;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = @"Provider=MySQLProv; Data Source=C:\ProgramData\MySQL\MySQL Server 8.0\Data\singe; User Id=******; Password=*************;";
//error is here
//-------------
conn.Open();
//-------------
conn.Close();
Console.ReadLine();
}
}
}
我得到的全部输出是：
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\assembly\GAC_MSIL\Microsoft.VisualStudio.HostingProcess.Utilities\14.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.HostingProcess.Utilities.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\assembly\GAC_MSIL\Microsoft.VisualStudio.HostingProcess.Utilities.Sync\14.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.HostingProcess.Utilities.Sync.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\assembly\GAC_MSIL\Microsoft.VisualStudio.Debugger.Runtime\14.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.Debugger.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'D:\Visual Studio 2015\Projects\ConsoleApplication2\ConsoleApplication2\bin\Debug\ConsoleApplication2.vshost.exe'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Data.DataSetExtensions\v4.0_4.0.0.0__b77a5c561934e089\System.Data.DataSetExtensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\Microsoft.CSharp\v4.0_4.0.0.0__b03f5f7f11d50a3a\Microsoft.CSharp.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Net.Http\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Net.Http.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
The thread 0x2324 has exited with code 0 (0x0).
The thread 0x409c has exited with code 0 (0x0).
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'd:\visual studio 2015\Projects\ConsoleApplication2\ConsoleApplication2\bin\Debug\ConsoleApplication2.exe'. Symbols loaded.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\Accessibility\v4.0_4.0.0.0__b03f5f7f11d50a3a\Accessibility.dll'. Cannot find or open the PDB file.
'ConsoleApplication2.vshost.exe' (CLR v4.0.30319: ConsoleApplication2.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\System.Transactions\v4.0_4.0.0.0__b77a5c561934e089\System.Transactions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Exception thrown: 'System.InvalidOperationException' in System.Data.dll
-我已检查我是否使用了正确的连接字符串。
-我已经检查了数据库文件的位置。
-我能够使用工作台和popsql连接并查询数据库。
-我正在使用Visual Studio 2015（2017在我的笔记本电脑上不起作用）