C# WinApp ตั้งค่า DefaultCellStyle ของ DataGridView แบบขี้เกียจๆ

public static void SetDefaultCellStyle(this System.Windows.Forms.DataGridView dgv)
      {
          System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle1 = new System.Windows.Forms.DataGridViewCellStyle();
          dataGridViewCellStyle1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(255)))), ((int)(((byte)(192)))));
          dataGridViewCellStyle1.SelectionBackColor = System.Drawing.Color.Yellow;
          dataGridViewCellStyle1.SelectionForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(0)))), ((int)(((byte)(192)))));

          System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle2 = new System.Windows.Forms.DataGridViewCellStyle();
          dataGridViewCellStyle2.BackColor = System.Drawing.Color.White;
          dataGridViewCellStyle2.SelectionBackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(255)))), ((int)(((byte)(192)))));
          dataGridViewCellStyle2.SelectionForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(0)))), ((int)(((byte)(64)))));

          dgv.AlternatingRowsDefaultCellStyle = dataGridViewCellStyle1;
          dgv.RowsDefaultCellStyle = dataGridViewCellStyle2;
      }

 public frmPostCode()
        {
            InitializeComponent();
            postCode_AmphurDataGridView.SetDefaultCellStyle();
            postCode_PostCodeDataGridView.SetDefaultCellStyle();
            postCode_PostOfficeDataGridView.SetDefaultCellStyle();
            postCode_ProvinceDataGridView.SetDefaultCellStyle();

        }