改变数据视图中搜索关键字的颜色

我必须写一个DataGridView并以编程方式填充它。我想当用户搜索一个词，例如关键字，有包含它的单元格(例如其关键字)只是突出在关键字搜索词关键字不是所有关键字或不是单元格也不是行。下面是填充DataGridView的代码:

        private void Fill()
    {
        try
        {
            if (dataGridView1 != null)
            {
                dataGridView1.ColumnCount = 11;
                dataGridView1.Columns[0].HeaderText = Resources.Form1_Fill_ID;
                dataGridView1.Columns[1].HeaderText = Resources.Form1_Fill_Family;
                dataGridView1.Columns[2].HeaderText = Resources.Form1_Fill_Cellphone;
                dataGridView1.Columns[3].HeaderText = Resources.Form1_Fill_Phone1;
                dataGridView1.Columns[4].HeaderText = Resources.Form1_Fill_Phone2;
                dataGridView1.Columns[5].HeaderText = Resources.Form1_Fill_Phone3;
                dataGridView1.Columns[6].HeaderText = Resources.Form1_Fill_Fax;
                dataGridView1.Columns[7].HeaderText = Resources.Form1_Fill_CompanyName;
                dataGridView1.Columns[8].HeaderText = Resources.Form1_Fill_Agency;
                dataGridView1.Columns[9].HeaderText = Resources.Form1_Fill_Brands;
                dataGridView1.Columns[10].HeaderText = Resources.Form1_Fill_Address;
                dataGridView1.Columns[0].Name = Resources.Form1_Fill_ID;
                dataGridView1.Columns[1].Name = Resources.Form1_Fill_Family;
                dataGridView1.Columns[2].Name = Resources.Form1_Fill_Cellphone;
                dataGridView1.Columns[3].Name = Resources.Form1_Fill_Phone1;
                dataGridView1.Columns[4].Name = Resources.Form1_Fill_Phone2;
                dataGridView1.Columns[5].Name = Resources.Form1_Fill_Phone3;
                dataGridView1.Columns[6].Name = Resources.Form1_Fill_Fax;
                dataGridView1.Columns[7].Name = Resources.Form1_Fill_CompanyName;
                dataGridView1.Columns[8].Name = Resources.Form1_Fill_Agency;
                dataGridView1.Columns[9].Name = Resources.Form1_Fill_Brands;
                dataGridView1.Columns[10].Name = Resources.Form1_Fill_Address;
            }
            _conn.ConnectionString = _connectionString;
            var cmd = new OleDbCommand("Select * from contacts ", _conn);
            _conn.Open();
            OleDbDataReader reader = cmd.ExecuteReader();
            int i = 0;
            while (reader != null && reader.Read())
            {
                if (dataGridView1 != null)
                {
                    dataGridView1.Rows.Add(1);
                }
                if (dataGridView1 != null)
                {
                    var row = dataGridView1.Rows[i];
                    row.Cells[Resources.Form1_Fill_ID].Value = reader[0].ToString();
                    row.Cells[Resources.Form1_Fill_Family].Value = reader[1].ToString();
                    row.Cells[Resources.Form1_Fill_Cellphone].Value = reader[2].ToString();
                    row.Cells[Resources.Form1_Fill_Phone1].Value = reader[3].ToString();
                    row.Cells[Resources.Form1_Fill_Phone2].Value = reader[4].ToString();
                    row.Cells[Resources.Form1_Fill_Phone3].Value = reader[5].ToString();
                    row.Cells[Resources.Form1_Fill_Fax].Value = reader[6].ToString();
                    row.Cells[Resources.Form1_Fill_CompanyName].Value = reader[7].ToString();
                    row.Cells[Resources.Form1_Fill_Agency].Value = reader[8].ToString();
                    row.Cells[Resources.Form1_Fill_Brands].Value = reader[9].ToString();
                    row.Cells[Resources.Form1_Fill_Address].Value = reader[10].ToString();
                }
                i++;
            }
        }
        catch (Exception ex)
        {
            return;
        }
        finally
        {
            _conn.Close();
        }
    }

，这是搜索代码

        private void searchBtn_Click(object sender, EventArgs e)
    {
        // Code to search the  alphanumneric Part Number (in Column1 header called "PART NUMBER") and highlihgt the row
        foreach (DataGridViewRow row in dataGridView1.Rows)
        {
            try
            {
                if (row.Cells[0].Value.ToString().Contains(searchTxt.Text))
                    //row.Cells[0].Style.ForeColor = Color.Red;
                {
                    var t = row.Cells[0].Value.ToString();
                }
                if (row.Cells[1].Value.ToString().Contains(searchTxt.Text))
                        row.Cells[1].Style.ForeColor = Color.Red;
                if (row.Cells[2].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[2].Style.ForeColor = Color.Red;
                if (row.Cells[3].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[3].Style.ForeColor = Color.Red;
                if (row.Cells[4].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[4].Style.ForeColor = Color.Red;
                if (row.Cells[5].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[5].Style.ForeColor = Color.Red;
                if (row.Cells[6].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[6].Style.ForeColor = Color.Red;
                if (row.Cells[7].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[7].Style.ForeColor = Color.Red;
                if (row.Cells[8].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[8].Style.ForeColor = Color.Red;
                if (row.Cells[9].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[9].Style.ForeColor = Color.Red;
                if (row.Cells[10].Value.ToString().Contains(searchTxt.Text))
                    row.Cells[10].Style.ForeColor = Color.Red;
            }
            catch (Exception)
            {
                return;
            }
        }
    }