using namespace System::IO;

Open File Dialog Example

	String ^LastFileDirectory;
	String ^Filename;

	//If last directory is not valid then default to My Documents (if you don't include this the catch below won't occur for null strings so the start directory is undefined)
	if (!Directory::Exists(LastFileDirectory))
		LastFileDirectory = Environment::GetFolderPath(Environment::SpecialFolder::MyDocuments);

	//----- FILE OPEN DIALOG BOX -----
	OpenFileDialog ^SelectFileDialog = gcnew OpenFileDialog();

	SelectFileDialog->Filter = "All Files (*.*)|*.*";		//"txt files (*.txt)|*.txt|All files (*.*)|*.*"
	SelectFileDialog->FilterIndex = 1;				//(First entry is 1, not 0)
	try
	{
		SelectFileDialog->InitialDirectory = LastFileDirectory;
	}
	catch (Exception ^)
	{
		SelectFileDialog->InitialDirectory = Environment::GetFolderPath(Environment::SpecialFolder::MyDocuments);
	}
	//Display dialog box
	if (SelectFileDialog->ShowDialog() == System::Windows::Forms::DialogResult::OK)
	{
		//----- OPEN THE FILE -----
		Filename = SelectFileDialog->FileName;

		//STORE LAST USED DIRECTORY
		if (Filename->LastIndexOf("\\") >= 0)
			LastFileDirectory = Filename->Substring(0, (Filename->LastIndexOf("\\") + 1));

To Select Multiple Files To Open

	//As part of the dialog setup
	SelectFileDialog->Multiselect = true;
	//To get the selected filenames
	Filename = SelectFileDialog->FileName;					//Will contain the first file
	array ^Filenames = SelectFileDialog->FileNames;		//Will contain all files