Send data from a Gridview in a Form to Combobox in another Form

Question

I’m trying to send the data of a gridviewin a second Formfor a comboboxin the form but I haven’t been successful. I wonder if there is a way to do this without sending as a parameter, since I will call the formmain at other times without needing this value. Follow the attempt code:

private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
    Form1 f = new Form1();
    f.cbComputador.SelectedIndex = Convert.ToInt32(dataGridView1.CurrentRow.Cells[1].Value);
    this.Close();
}

I need the value to appear immediately on combobox "Computer" when user gives two clicks.

Answer 1

Do it in a way that this parameter is not mandatory for the functioning of the form or create a public property in the second form that will receive this value.

Example:

1. Optional parameter

   // construtor
   public Form1(int? valorOpcional)
   {
       if(valorOpcional == null)
           // Nenhum valor foi passado
       else
           cbComputador.SelectedIndex = (int)valorOpcional;
   }
   

2. With the property

   public class Form1
   {
       public int? ValorDoCombo { get; set; }
   
       public Form1() 
       { 
           if(ValorDoCombo != null)
               cbComputador.SelectedIndex = (int)ValorDoCombo;
   
       }
   }
   

   And the use would be something like

   private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
   {
       Form1 form = new Form1();
       form.ValorDoCombo = Convert.ToInt32(dataGridView1.CurrentRow.Cells[1].Value);
       this.Close();
   }