Opening a form

#include "FormName.h"			//Add this at top of file

	frmConfiguration ^ConfigForm = gcnew frmConfiguration();
	ConfigForm->PassedValue1 = "This is a string I'm passing";

	//TO OPEN AS A DIALOG FORM:
	ConfigForm->ShowDialog();
	//or
	if (ConfigForm->ShowDialog() == System::Windows::Forms::DialogResult::OK)
	else if (ConfigForm->DialogResult == System::Windows::Forms::DialogResult::Cancel)

	//TO OPEN NOT AS A DIALOG FORM:
	ConfigForm->Show();

Closing a form

	Close();
	//or
	this->Close();

Closing a form from the Form Load Event

You can't use this->Close as the form has not yet finished loading so if you do you'll cause fatal error. Instead use this:

	this->BeginInvoke(gcnew MethodInvoker(this, &System::Windows::Forms::Form::Close));

Dynamically updating Form Properties

Use this instead of the forms name:

	this->Text = "A New Title For This Form";

To Disable A Form

	//This form
	this->Enabled = false;
	//Another form
	frmMyForm->Enabled = false;

Why Is A Form Closing?

You can use things like this (see the CloseReason members):

if (e->CloseReason == System::Windows::Forms::CloseReason::UserClosing)

Supressing Display Update Of A Form

You can't stop a form being painted, but you can do this:

	this->SuspendLayout();
	MyControlName1->SuspendLayout();
	MyControlName2->SuspendLayout();
	...
	MyControlName1->ResumeLayout();
	MyControlName2->ResumeLayout();
	this->ResumeLayout();

You can also make specific controls invisible

Default Accept and Cancel Buttons

Set in the forms AcceptButton and CancelButton properties.
Set Dialog result for each button

Returning a Dialog Result

You can assign a dialog result value to buttons on the form in their properties.

Stopping A Form / Application From Closing

Handle the form's 'Closing' event and set 'e.Cancel' to 'True' if you want to prevent the form from closing.
e->Cancel = true;
If your going to present a message box, such as a 'do you want to save' then you need to do the cancel first to stop the ap closing while waiting for the user input. Then afterwards do the close.