Public Overridable Property Size As SizeF

public virtual SizeF Size {get; set;}

private void detail_Format(object sender, System.EventArgs eArgs)
{
    System.Drawing.SizeF s = new System.Drawing.SizeF();
    s.Width = 2;
    s.Height = 1;
    this.textBox1.Size = s;
}

Private Sub Detail1_Format(ByVal sender As Object, ByVal e As System.EventArgs) Handles Detail1.Format
    Dim s As System.Drawing.SizeF
    s.Width = 2
    s.Height = 1
    Me.TextBox1.Size = s
End Sub