将值从Windows窗体传递到控制台应用程序

Question

因此，我有一个程序可以通过Windows窗体获取用户凭据，现在，通过MessageBox，我当前正在显示用户输入，我想要做的就是将其传递到控制台应用程序中，以便如果用户输入正确的凭据然后继续在控制台应用程序中，我该怎么做呢？

Answer 1

you may need to add a while loop to look for a txt file in your console application. In your windows forms application, you can write a success or failure message into a txt file. (Add encryption for security) The moment you write down the information your console app should read it and continue from there.

Algorithm:
1.console application start
2. console app while loop until txt file detected
3. forms app show input screen
4. user enter credential
5. write success or failure into txt file
6. read txt file
7. continue based on credential result
8. Remove txt file

Since the form is also in the console app project (I assume it from your wordings) you can do the following

class Program
{
    public static object abc;
    static void Main(string[] args)
    {
        //do something here if required
        Form1 frm = new Form1();
        if (frm.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            //login success do what ever on success
            Console.WriteLine("Login success");
            Console.WriteLine(abc.ToString());
        }
        else
        {
            Console.WriteLine("Login failure");
            Console.WriteLine(abc.ToString());
            //login failure
        }
        Console.ReadLine();
    }
}

and the login button click event in your login form class

 private void Login_Click(object sender, EventArgs e)
    {
        if(true)
        {
            Program.abc = "any success object here";
            //on successful login
        this.DialogResult= System.Windows.Forms.DialogResult.OK;
        }
        else
        {
            Program.abc = "any failure object here";
            this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
        }
    }

Thanks,

Esen

Answer 2

you could host a wcf service within your form app. then make the console app a client. creating a service oriented system is surprisingly easy with wcf. See here for a tutorial. you will learn a lot if you follow this approach

Answer 3

结合使用IPC（进程间通信）和命名管道。在两个进程之间轻松实现，请访问http://msdn.microsoft.com/zh-cn/library/bb546085.aspx

Answer 4

Essentially you'll probably have to use some native Windows API functions (Alloc/FreeConsole) and use a WinForms controller.

Semi-pseudocode:

[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool AllocConsole();

[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool FreeConsole();

//--- form code
if (Do_validation() && AllocConsole())
{
    this.Hide();
    this.ShowInTaskbar = false;
    Enter_Console_Code();
    FreeConsole();
    System.Threading.Thread.Sleep(50); //FreeConsole sometimes doesn't finish closing straight away which means your form flickers to the front and then minimizes.
    this.ShowInTaskbar = true;        
    this.Show(); 
}
//---

private void Enter_Console_Code()
{ 
    string line = string.Empty;
    while ((line = Console.ReadLine()) != "q")
        Console.WriteLine(line); //pointless code ftw!
}

Essentially what this code does is do your "GUI" validation step, and then if that's successful it attempts to allocate a console for the application. Once the console is allocated it enters "Console Mode" by completely hiding the GUI and displaying only the new console (closing the console closes the application by the way). Your "Console Mode" code is executed, then the console is closed and the GUI comes back.