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Question on sending values between forms.

I'm currently creating a multiple form application with a database. My issue is that I need to pass a value from my login form to my project setup form. Currently I am using code to created an instance of Project setup in my login form and sending the value that way, and it appears to work, here is the code:

ProjectSetup ps = new ProjectSetup(userID);

The issue is that after the login form, is the Main Menu. In the Main Menu, I clicked the Project set up button which runs this code: 

ProjectSetup obj2 = new ProjectSetup();
            obj2.Show();
            this.Close();

When this happens the instance of ProjectSetup ps is replaced with obj2. Therefor, my value once contained in the ps instance of project setup is now null, since I passed the value to the ps instance and not obj2's instance.

My question is: Is there a way around this?


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