Global Variables N00BIE Help!

Question

Hi Guys So I'm still very new to C# and I'm currently making a forms application in Visual Studio 2013. I have a program that will display 30 DVD's to a user and the user can add them to a wish list and then there are admin controls too. I have a DVD class and an INVENTORY class. The Inventory class holds a List of the DVD objects. The problem I have is that I would like to be able to access the classes I have made and used in form1 from other forms without needing to save and load to a file. I have tried making the objects global like this: namespace Summer_Homework { public partial class Form1 : Form { //Global Variables public DVD DVDCurrent = new DVD(); public INVENTORY Inventory = new INVENTORY(); public Form1() { InitializeComponent(); } But it has not worked. What I would like to know is what is the proper way to pass variables between forms? Any help/input would be very much appreciated. Many Thanks and Kind Regards James Webb

James Webb · Answer

Thanks Very Much!

Vulpes · Answer

Just make the global variables static. The other forms won't then need a reference to the Form1 instance to access them: namespace Summer_Homework { public partial class Form1 : Form { //Global Variables public static DVD DVDCurrent = new DVD(); public static INVENTORY Inventory = new INVENTORY(); public Form1() { InitializeComponent(); } // etc } To access them from another form you can now just precede them with the class name: DVD dvd = Form1.DVDCurrent; INVENTORY inv = Form1.Inventory;