c# - 如何从添加到另一个控件的子控件访问变量？

Question

我有以下代码(这是我试图在其中包含所有重要信息的摘录)

public partial class MyTopScreen : Form
{
    public bool _myVariable ;
    public CommonForm _commonGridForm;
    public MyTopScreen(bool first_param, string second_param )
    {           
        CommonForm commonGridForm = new CommonForm();
        DataGridView dataGridView1 = commonGridForm.dataGridView1;
        _commonAttributForm = commonAttributForm;          
        InitializeComponent();
        this.TabPage1.Controls.Add(dataGridView1);
    }  
 } 

然后当我进入 CommonForm 时，如下所示:

public partial class CommonForm : Form        
{
    public CommonForm()
    {
        //My Question is how do I access the _myVariable from this point in the code ?
        //this.parent      doesnot work or does not give me access to _myVaribale
    }
 }

在此先感谢您的大力帮助。

Answer 1

一种方法，将 MyTopScreen 的实例传递给其他类的构造函数(如果相关)。将其存储在字段中。

public partial class CommonForm : Form
{
    public CommonForm(MyTopScreen screen)
    {
        this.TopScreen = screen;
    }

    private MyTopScreen TopScreen{ get; set; }
}

现在您可以通过 TopScreen._myVariable. 在 CommonForm 中访问该变量。

你必须将它传递给构造函数:

CommonForm commonGridForm = new CommonForm(this);