c# - c# 多窗口窗体切换

Question

我有 10 个表单，每个表单都有下一个和上一个按钮。显示和关闭表单的最佳方法是什么。我不需要表格来留在内存中。有什么想法吗？

Answer 1

我会使用类似于 FormSwitcher 的东西:

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;
    }
}

您的主窗体应如下所示:

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

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

旋转形式可能如下所示:

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();
    }
}