您属性是一个实例变量，所以值可以是跨 Form1中。

Your property is an instance variable, so the value can be different across different instances of Form1.

如果你正试图从一个父窗体访问实例变量，要做到这一点最简单的方法是通过Form1中在到窗体2的构造

If you are trying to access instance variables from a parent form, the easiest way to do that is to pass Form1 in to the constructor of Form2.

public partial class Form2 : Form
{
    private Form1 f1;
    public Form2(Form1 ParentForm)
    {
        InitializeComponent();
        f1 = ParentForm;
    }

    private void Form2_Load(object sender, EventArgs e)
    {
        label1.Text = f1.Test;
    }
}

然后，当你创建Form1中一个新的窗体2，你能做到这一点：

Then when you create a new Form2 from Form1, you can do this:

Form2 frm2 = new Form2(this);

如果你想成为只读你的财产，你根本无法指定setter方法​​：

If you want your property to be read only, you can simply not specify a setter:

public string Test
{
    get { return _test; }
}