C# WinApp มานำเสนอโค้ด การ Set DefaultCellStyle ใน DataGridView ครั้งเดียวใช้ได้ทุก DataGridView ครับ

using System;
using System.Collections.Generic;
namespace TORServices.ExtensionTor
{

    public static class extGridview
    {
  public static void SetDefaultCellStyle(this System.Windows.Forms.DataGridView dgv, bool RowHeadersVisible = true)
        {
            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)))));
            dataGridViewCellStyle1.Font = new System.Drawing.Font("Microsoft Sans Serif", 10);
            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)))));
            dataGridViewCellStyle2.Font = new System.Drawing.Font("Microsoft Sans Serif", 10);

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


        }
    }
}

 public frmSystem_Setting()
        {
            InitializeComponent();

            this.contact_ContacttypeDataGridView.SetGridDefaultCellStyle();
            this.product_TypeReciveDataGridView.SetGridDefaultCellStyle();
            this.product_SampletypeDataGridView.SetGridDefaultCellStyle();
            this.product_ParameterDataGridView.SetGridDefaultCellStyle();
            this.product_UnitDataGridView.SetGridDefaultCellStyle();
            this.bankDataGridView.SetGridDefaultCellStyle();
            this.contact_BillTypeDataGridView.SetGridDefaultCellStyle();
            this.contact_BusinesstypeDataGridView.SetGridDefaultCellStyle();
            this.company_PositionDataGridView.SetGridDefaultCellStyle();
            this.company_SectionDataGridView.SetGridDefaultCellStyle();
            this.company_DepartmentDataGridView.SetGridDefaultCellStyle();

        }