Access to creator object

Question

Hi, I have a simple windows application in C# with 3 forms. first form is main form (its name is FrmMain), second is FrmData and third is FrmShow. In main form (FrmMain) I have created an instance from second form (FrmData) and show it :

    public partial class FrmMain : Form
    {
        public Form FrmModifyData; //for FrmData
        int PersonCode;
        public FrmMain()
        {
            InitializeComponent();
        }

        private void btnShowDataForm_Click(object sender, EventArgs e)
        {
            FrmModifyData= new FrmData();  
            FrmModifyData.ShowDialog();

        }
    }

but I can't access from FrmModifyData to FrmMain fields like PersonCode . How can I access to creator object's field?

Note: I'm a beginner.

thanks.

Answer 1

If you want to access PersonCode field, you should declare it as public. No visibility modifier will make it private, hence not accesible from other casses.

Answer 2

You would need to add a property to your FrmModifyData class to take an instance of the FrmMain class. Then you can do this:

FrmModifyData = new FrmData();
FrmModifyData.ParentData = this;
FrmModifyData.ShowDialog();

Then inside FrmModifyData you would have access to the public members of FrmMain. Obviously this is kind of quick and dirty and not very reusable so i would suggest adding more explicit properties to FrmModifyData with only the data you need to use.