private void btnDelete_Click(object sender, EventArgs e)
        {
            DialogResult dialogResult = MessageBox.Show("Are you sure you wanna delete this? ", "Computer Parts",
                                                        MessageBoxButtons.YesNo);

            if (dialogResult == DialogResult.Yes)
            {
                int index = this.gridManageComputers.Rows.IndexOf((GridViewDataRowInfo)this.gridManageComputers.CurrentRow);
                if (index < 0)
                {
                    return;
                }
                BO.Computer computer = (BO.Computer)gridManageComputers.Rows[index].DataBoundItem;
                if (index != null)
                {
                    _computersBll.Remove(computer.ComputerID);
                }
            }
            else if (dialogResult == DialogResult.No)
            {
                this.Hide();
                ManageComputers mg = new ManageComputers();
                mg.ShowDialog();
            }
        }
        private void btnRefresh_Click(object sender, EventArgs e)
        {
            this.Hide();
            ManageComputers mg = new ManageComputers();

            mg.ShowDialog();
        }