For Each Loop used to clear all textboxes and RadioButtons inside a Groupbox

private: System::Void btnClear_Click(System::Object^  sender, System::EventArgs^  e) 
			 {
			           for each (Control^ myControl in this->Controls)    //loop through the form's control collection to find all the textboxes.
                            {
                                if (myControl->GetType() == System::Windows::Forms::TextBox::typeid)              //found textbox? then clear text
                                
									myControl->Text = "";
								
								else if (myControl->HasChildren)
								{
									for each(Control^ nestedControl in myControl->Controls)				// here, myControl is pointing to the groupbox. So we need to cycle
																																// through the groupbox looking for radiobuttons
																		
										if(nestedControl->GetType() == System::Windows::Forms::RadioButton::typeid)
										{
												RadioButton^ myRadioButton = safe_cast<RadioButton^> (nestedControl);   //see note below
												myRadioButton->Checked = false;
										}
								}			
                            }
           
                        TextBox1->Focus();
			 }

	/*				   
     Note about the RadioButton loop above:
     All controls have a text property (I think). But not all controls have a Checked property. So to
     uncheck a RadioButton or Checkbox Control, I have to create a new reference variable (myRadioButton) line 231
     and assign it to the current control being pointed to in nestedControl. Then I can access its checked
     property and uncheck it by making it false in line 232.*/