/// <summary>
        /// Get All Computers From Domain.
        /// </summary>


        private void FillGridView(object sender)
        {
            computerBl = new ComputerBL();
            DataTable computersData = new DataTable();

            dataGridView1.Columns.Clear();

            // Creating DataTableFill class instance

            try
            {
                if (((Button)sender).Name == "AraBtn")
                {
                    computersData = computerBl.FillGridView("AraBtn", SearchTxt.Text);
                }

                else if (((Button)sender).Name == "ListAll")
                {
                    computersData = computerBl.FillGridView("ListAll", SearchTxt.Text);
                }


                dataGridView1.DataSource = computersData;

                for (int a = 1; a <= 5; a++)
                {
                    dataGridView1.Columns[a].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
                }
            }

            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        private void ShutDownComputer(object sender, EventArgs e)
        {
            try
            {
                computerName = dataGridView1.SelectedCells[1].Value.ToString();
                computerBl   = new ComputerBL();
                computerBl.ShutDownComputer(computerName);
            }

            catch (ArgumentOutOfRangeException)
            {
                MessageBox.Show("Lütfen tüm satırı seçiniz", "Uyarı", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }