C#

public partial class Form1 : Form
{
    //FIELD VARIABLES
    private CompileFinalCell finalCellCompiler;

    private void twoDDisplay_Click(object sender, EventArgs e)
    {
     finalCellCompiler = new CompileFinalCell(this,
     fibrePositionGenerator, unitCellData.outerCellSize,
     finalBeamForce, finalShellForce);
    }

    private void Clear()
    {
        if (finalCellCompiler != null)
        {
            finalCellCompiler.Dispose();
            finalCellCompiler = null;
        }
        GC.Collect();
    }
}

class CompileFinalCell : IDisposable
{
    //FIELDS
    Form1 _form1Data;             // Reference copy of the form1Data

    //CONTRUCTOR
    public CompileFinalCell(Form1 originalFormData,
    FibrePositionGenerator fibreData, SizeF outerCell,
    ForceDirectedAlgorithm beamForce,
        ForceDirectedAlgorithm shellForce)
    {
        //Assign field variables by reference
        _form1Data = originalFormData;

        //Create event handlers
        _form1Data.depositNext.Click += new
        EventHandler(depositNext_Click);
    }

    private void depositNext_Click(object sender, EventArgs e)
    { MessageBox.Show("Button clicked"); }

    public void Dispose()
    { GC.SuppressFinalize(this); }
}