C#:DataGridView控件操作

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Common
{
    /// <summary>
    /// DataGridView控件操作
    /// </summary>
    public class CtlDataGridViewOperate
    {
        private DataGridView m_dataGridView = null;

        /// <summary>
        /// DataGridView控件
        /// </summary>
        public DataGridView refDataGridViewControl
        {
            set
            {
                m_dataGridView = value;
            }
            get
            {
                return m_dataGridView;
            }
        }

        /// <summary>
        /// 构造函数
        /// </summary>
        public  CtlDataGridViewOperate()
        {
        }

        private static volatile CtlDataGridViewOperate m_dgvOpera = null;

        /// <summary>
        /// 获取DataGridView控件操作类单一实例
        /// </summary>
        /// <returns></returns>
        public static CtlDataGridViewOperate GetInstance()
        {
            if(null == m_dgvOpera)
            {
                m_dgvOpera = new CtlDataGridViewOperate();
            }
            return m_dgvOpera;
        }

        /// <summary>
        /// 点击数据网格视图单元格显示对话框
        /// </summary>
        /// <param name="frm">要显示的对话框</param>
        /// <param name="headerText">列头名称</param>
        /// <param name="e">数据网格视图单元格事件参数</param>
        public void ClickCellShowDlg(Form frm, string headerText, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex < 0 || e.ColumnIndex < 0)
            {
                return;
            }
            var clmindx = m_dataGridView.CurrentCell.ColumnIndex;
            if (m_dataGridView.Columns[clmindx].HeaderText.Trim() == headerText)
            {
                var rowCell = m_dataGridView.CurrentCell.Value;
                if (rowCell != null)
                {
                    frm.StartPosition = FormStartPosition.CenterScreen;
                    frm.ShowDialog();
                }

            }
        }

    }
}