title: How to access to a control in a form that lives in a panel
body: <p>I have a panel named panel1, two buttons named buttonLoad and buttonSave. All of these controls live in Form1.</p>
  
  <p>There's another Form(Form2) which consist of a textbox named textbox1.</p>
  
  <p>when the buttonLoad is clicked, the Form2 is loaded into the panel1.</p>
  
  <p>After typing something in the textbox1 when I click the save button how can i get the text that was typed? ( I want to know how to get the textbox1.text which is in Form2 loaded to panel1)</p>