C#

• Add a static private member variable that holds the last assigned ID
  
• Provide a constructor that increments the last ID and assigns the value to Id
  
• Make the incrementing and copying of the last ID member thread safe (e.g. using Interlocked.Increment)
  
• Make the set method for Id private
  

public class PersonalDetail
{
    public PersonalDetail(string firstName, int age)
    {
        if (IdToInstance.Any(kvp => kvp.Value.FirstName.Equals(firstName)))
        {
            throw new DuplicateNameException();
        }

        FirstName = firstName;
        Age = age;

        IdToInstance.Add(Id++, this);
    }

    public string FirstName { get; set; }
    public int Age { get; set; }

    // static constructor
    static PersonalDetail()
    {
        Id = 1;
        IdToInstance = new Dictionary<int, PersonalDetail>();
    }

    static int Id { set; get; }

    static Dictionary<int, PersonalDetail> IdToInstance { get; }

    public static void Add(params (string name, int age)[] pds)
    {
        foreach (var pd in pds)
        {
            new PersonalDetail(pd.name, pd.age);
        }
    }

    public static PersonalDetail InstanceFromId(int id)
    {
        PersonalDetail pd = null;

        return IdToInstance.TryGetValue(id, out pd) ? pd : null;
    }
}

/* usage example

// multiple instances created
// using C# 7 tuple syntax
PersonalDetail.Add(
    (name: "Tapan", age: 11), // names optional
    ("Joy", 21),
    ("Madhu", 31)
);


// test index data
var id2 = PersonalDetail.InstanceFromId(2);

// check index function won't crash on bad dara
var idbad = PersonalDetail.InstanceFromId(11);

// force error
PersonalDetail.Add(("Tapan", 200));
*/

Member 13621117 wrote:

how do I download and install a direct program from the site?

So, I have a folder where it contains the files adb.exe, fastboot, logo, recovery ...

I want to know how to direct the commands using this folder.

example: in this folder, you have the file "LOGO.BIN" and need to push to the cell phone using this command "Fastboot flash logo logo.bin"

<pre>
OpenFileDialog openfile = new OpenFileDialog();

            openfile.Filter = "IMG files|*.img";
            openfile.Title = "Open a file..";
            if (openfile.ShowDialog() == DialogResult.OK)
            {
                flashrecoveryTextbox.Text = openfile.FileName;
                Process process = new Process();
                ProcessStartInfo startInfo = new ProcessStartInfo();
                startInfo.WindowStyle = ProcessWindowStyle.Hidden;
                startInfo.CreateNoWindow = true;
                startInfo.UseShellExecute = false;
                startInfo.RedirectStandardOutput = true;
                startInfo.FileName = "fastboot.exe";
                startInfo.Arguments = " flash logo.bin\"" + openfile.FileName + "\"";
                process.StartInfo = startInfo;
                process.Start();
                Console.Text = Console.Text + process.StandardOutput.ReadToEnd();
            }

Member 13621117 wrote:

how do I download and install a direct program from the site?

Car lambo = new Car();
Car volvo = new Car();

Select(p => new Users_in_Role_ViewModel()