C#中实现在32位、64位系统下自动切换不同的SQLite dll文件

using System;

using System.Collections.Generic;

using System.Windows.Forms;

using System.Management;

using System.IO;

namespace SqliteAuto

{

  static class Program

  {

    /// <summary>

    /// 应用程序的主入口点。

    /// </summary>

    [STAThread]

    static void Main()

    {

   

   

      Application.EnableVisualStyles();

      Application.SetCompatibleTextRenderingDefault(false);

      string dll32 = System.Windows.Forms.Application.StartupPath + "\\lib\\SQLite32.DLL";

      string dll64 = System.Windows.Forms.Application.StartupPath + "\\lib\\SQLite64.DLL";

      string dllpath = System.Windows.Forms.Application.StartupPath + "\\System.Data.SQLite.dll";

      if (Detect32or64() == "32")

      {

        // do 32bit things.

        try

        {

          using (FileStream fs = File.Create(dllpath)) { }

          File.Copy(dll32, dllpath, true);

        }

   

        catch

        {

          Console.WriteLine("ERR");

        }

   

      }

      else if (Detect32or64() == "64")

      {

        //do 64bit things

        try

        {

          using (FileStream fs = File.Create(dllpath)) { }

          File.Copy(dll64, dllpath, true);

        }

   

        catch

        {

          Console.WriteLine("ERR");

        }

      }

      Application.Run(new Form1());

    }

   

    private static string Detect32or64()

    {

      try

      {

        string addressWidth = String.Empty;

        ConnectionOptions mConnOption = new ConnectionOptions();

        ManagementScope mMs = new ManagementScope("\\\\localhost", mConnOption);

        ObjectQuery mQuery = new ObjectQuery("select AddressWidth from Win32_Processor");

        ManagementObjectSearcher mSearcher = new ManagementObjectSearcher(mMs, mQuery);

        ManagementObjectCollection mObjectCollection = mSearcher.Get();

        foreach (ManagementObject mObject in mObjectCollection)

        {

          addressWidth = mObject["AddressWidth"].ToString();

        }

        return addressWidth;

      }

      catch (Exception ex)

      {

        Console.WriteLine(ex.ToString());

        return String.Empty;

      }

    }

  }

}