如何在C#中从一个窗体运行多个windows窗体？

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

    private void btnOpenForm1_Click(object sender, EventArgs e)
    {
        Form1 form1 = new Form1();
        form1.Show();
    }

    private void btnOpenForm2_Click(object sender, EventArgs e)
    {
        Form2 form2 = new Form2();
        form2.Show();
    }
}

// Form1.cs
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
}

// Form2.cs
public partial class Form2 : Form
{
    public Form2()
    {
        InitializeComponent();
    }
}