Ciganqwer1

Form3 f3 = new Form3();
           int RC=dataGridView2.RowCount;
            for (int j = 0; j < RC; j++)
            {
                       for (int i = 0; i < 3; i++)
                      {
                    f3.dataGridView1.Rows.Add();
                    
                           f3.dataGridView1.Rows[j].Cells[i].Value = dataGridView2.Rows[j].Cells[i].Value;
                
                     }
                  }

  

            f3.Show();

            this.Hide();
        }

foreach (DataGridViewRow row in dataGridView1.SelectedRows)
            {
                object[] items = new object[row.Cells.Count];
                for (int i = 0; i < row.Cells.Count; i++)
                {
                    items[i] = row.Cells[i].Value;
                }
                dataGridView2.Rows.Add(items);
               // fromDGV.Rows.Delete(row);
            }