Unlike Java, in C# there is no implicit reference to an instance of the enclosing class.
You need to pass such a reference to the nested class. A typical way to do this is through the nested class's constructor.
Here an example of how to access field in the enclosing class from the nested class. Take a look at this article as well please:
A Tutorial on Nested Classes in C#[
^]
public partial class Form1 : Form
{
private Nested m_Nested;
public Form1()
{
InitializeComponent();
m_Nested = new Nested(this);
m_Nested.Test();
}
private class Nested
{
private Form1 m_Parent;
protected Form1 Parent
{
get
{
return m_Parent;
}
}
public Nested(Form1 parent)
{
m_Parent = parent;
}
public void Test()
{
this.Parent.textBox1.Text = "Testing access to parent Form's control";
}
}
}
Submit an article or tip