Переключение между формами windows forms

I’m using winforms now.
I have the main form «form1» and I have a button that opens form2.
When I open form2 I would like for form1 to disappear. When the user click the x button on form2 I would like for it to close and go back to form1. I wouldn’t like to use modal windows.

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I’m using winforms now.
I have the main form «form1» and I have a button that opens form2.
When I open form2 I would like for form1 to disappear. When the user click the x button on form2 I would like for it to close and go back to form1. I wouldn’t like to use modal windows.

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Ответы

• Вот рабочий вариант.

  //Form1.cs
  using System.Collections.Generic;
  using System.ComponentModel;
  using System.Data;
  using System.Drawing;
  using System.Linq;
  using System.Text;
  using System.Windows.Forms;
  
  namespace WindowsFormsApplication1
  {
    public partial class Form1 : Form
    {
      private Form2 form2;
      public Form1()
      {
        InitializeComponent();
        form2 = new Form2(this) { Visible = false };
  
      }
  
      private void button1_Click(object sender, EventArgs e)
      {
        this.Visible = false;
        form2.Visible = true;
      }
    }
  }

  using System.Data;
  using System.Drawing;
  using System.Linq;
  using System.Text;
  using System.Windows.Forms;
  
  namespace WindowsFormsApplication1
  {
    public partial class Form2 : Form
    {
      private Form1 _form1;
      public Form2(Form1 form1)
      {
        _form1 = form1;
        InitializeComponent();
      }
  
      private void button1_Click(object sender, EventArgs e)
      {
        this.Visible = false;
        _form1.Visible = true;
      }
    }
  }

  Т.е. в проекте создаёте две формы, причём первая будет главной, а вторая второстепенной. При инициализации первой формы(т.е при запуске приложения) создаёте экземпляр второй формы, скрываете её и добавляете туда ссылку на текущую(т.е) первую форму. А потом
  при клике скрываете первую показываете вторую, показываете первую скрываете вторую в другом обработчике(второй формы).

  • Помечено в качестве ответа

    10 марта 2012 г. 5:28

I have 10 forms and each form has Next and Previous buttons. What is the best approach to show and close forms. I don’t need forms to stay in memory.
Any ideas?

public class FormSwitcher
{
    private List<Func<Form>> constructors;
    private int currentConstructor = 1;

    public FormSwitcher(Func<Form> firstForm)
    {
        constructors = new List<Func<Form>>();
        AddForm(firstForm);
    }

    public void AddForm(Func<Form> constructor)
    {
        constructors.Add(constructor);
    }

    public Form GetNextForm()
    {
        if (constructors.Count > 0 && currentConstructor >= constructors.Count)
        {
            currentConstructor = 0;
        }
        if (constructors.Count > currentConstructor)
        {
            return constructors[currentConstructor++]();
        }
        return null;
    }
}

public partial class MainForm : Form
{
    public MainForm()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        new FirstForm().Show();
    }
}

public partial class FirstForm : Form
{
    private FormSwitcher switcher;

    public FirstForm()
    {
        InitializeComponent();
        switcher = new FormSwitcher(() => new FirstForm());
        switcher.AddForm(() => new SecondForm(switcher));
        switcher.AddForm(() => new ThirdForm(switcher));
    }

    private void button1_Click(object sender, EventArgs e)
    {
        switcher.GetNextForm().Show();
        Close();
    }
}

public partial class SecondForm : Form
{
    private FormSwitcher switcher;

    public SecondForm(FormSwitcher switcher)
    {
        InitializeComponent();
        this.switcher = switcher;
    }

    private void button1_Click(object sender, EventArgs e)
    {
        switcher.GetNextForm().Show();
        Close();
    }
}

public partial class ThirdForm : Form
{
    private FormSwitcher switcher;

    public ThirdForm(FormSwitcher switcher)
    {
        InitializeComponent();
        this.switcher = switcher;
    }

    private void button1_Click(object sender, EventArgs e)
    {
        switcher.GetNextForm().Show();
        Close();
    }
}

2

Window myWindow_1 = new Windowd ();
Window myWindow_2 = new Windowd ();
Window myWindow_3 = new Windowd ();
// ...
Window myWindow_n = new Windowd ();

myWindow1 = null;
myWindow2 = null;
myWindow3 = null;
//...
myWindow4 = null;

Window[] myWindows = new Window[n];

for (int i=0; i<n; i++) {

    myWindows[i] = new Window();
}

0