C# Form Referencing

Sample code for System.Windows.Forms.Form class referencing.

Parent Form:

namespace ExampleProgram
{
	public partial class Form1 : Form
	{
		public int ChangeThisNumber = 0;
	
		public Form1()
		{
			InitializeComponent();
			Form child = new Form(this);
			child.Show();
		}

		public void RunThisMethod()
		{
			ChangeThisNumber = 2;
		}
	}
}

Child Form:

namespace ExampleProgram
{
	public partial class Form2 : Form
	{
		Form1 ParentForm;

		public Configuration(Form1 f)
		{
			InitializeComponent();
			ParentForm = f;
			
			// Change the public variable:
			ParentForm.ChangeThisNumber = 1;
			
			// Run the public method:
			ParentForm.RunThisMethod();
		}
	}
}