How do I pass values from datagridview to another form ?

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C#

DataGridView

forms

I am currently writing a program which needs an edit form. This form is to edit a country in the datagridview which I have. I am however confused about how to pass the data from the data gridview in the main form to the relative places on the edit form. I have done most of the coding as shown below. I know I need a method in my AVL class to return all the information of the selected country back to the main form method which then passes it back to the edit form and displays it. If anyone can help me to complete this method I would be grateful, I am unsure what to pass and what to write in this method.

Main form method

public void button2_Click(object sender, EventArgs e)
      {
          // creates new form referencing data grid view and AVL Tree
          EditCountryForm editform = new EditCountryForm(ref this.countryTree, dataGridView1);

          string CountryName = "";

          //set name of country selected to string
          foreach (DataGridViewRow item in this.dataGridView1.SelectedRows)
          {
              CountryName = item.Cells[0].Value.ToString();

          }

          // create new country with that name
          Country FindRow = new Country(CountryName, 0, 0, 0, 0,null);
          // create new country to be passed to edit form
          Country EditCountry = countryTree.ReturnCountryInfo(FindRow);

          editform.passCountry(EditCountry);

          editform.Show(); // Shows Form

Edit Form Method

public void passCountry(Country SelectedCountry)
       {
           this.ToEdit = SelectedCountry;

           CountryNameText.Text = ToEdit.name;
           CountryText.Text = ToEdit.Name;
           GDPGrowthText.Text = ToEdit.GdpGrowth.ToString();
           InflationText.Text = ToEdit.Inflation.ToString();
           HDIRankingText.Text = ToEdit.HdiRankings.ToString();
           TradeBalanceText.Text = ToEdit.TradeBalance.ToString();


       }

AVL Tree method

public Country ReturnCountryInfo(Country FindRow)
        {
            // Needs to return all information about the selected country 

            Country SelectedCountry = new Country("", 0, 0, 0, 0,null);
            return SelectedCountry;
        }