C now automatically switches different SQLite dll files on 32 bit and 64 bit systems

  • 2020-10-23 20:16:01
  • OfStack

Direct code:


using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Management;
using System.IO;
namespace SqliteAuto
{
  static class Program
  {
    /// <summary>
    ///  The main entry point to the application. 
    /// </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;
      }
    }
  }
}

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