datagridview模糊查询

private void button3_Click(object sender, EventArgs e) 
        { 
            int row = dataGridView1.Rows.Count;//得到总行数 
            int cell=dataGridView1.Rows[1].Cells.Count;//得到总列数 
            string strTxt = txtFind.Text;//得到输入的字符串，并付值给变量 
            Regex r = new Regex(strTxt); // 定义一个Regex对象实例  
            for (int i = 0; i <  row; i++)//得到总行数并在之内循环 
            { 
                for (int j = 0; j <  cell; j++)//得到总列数并在之内循环 
                { 
                    Match m = r.Match(dataGridView1.Rows.Cells[j].Value.ToString()); // 在字符串中模糊匹配  
                    if (m.Success) 
                    {   //对比TexBox中的值是否与dataGridView中的值相同（上面这句） 
                        dataGridView1.CurrentCell = dataGridView1[j,i];//定位到相同的单元格 
                        if (MessageBox.Show("是否需要继续查找？", "", MessageBoxButtons.OKCancel) == DialogResult.Cancel) 
                        { 
                            //如果选择了取消就会返回,如果选择了确定,就会继续查找匹配的. 
                            return;//返回 
                        } 
                    } 
                } 
            } 
        }