DataGridView中的RichTextBox单元格

DataGridView中的RichTextBox单元格DataGridView中的RichTextBox单元格
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;namespace DataGridViewRichTextBox{ public partial class Form1 : Form {DataTable _table = new DataTable(); public Form1() { InitializeComponent();_table.Columns.Add("col1");_table.Columns.Add("col2");DataRow row = _table.NewRow();row[0] = "Datagridview and richtextbox for bold substring in C#";row[1] = "Datagridview and richtextbox for bold substring in C#";_table.Rows.Add(row);_table.AcceptChanges(); this.dataGridView1.AutoGenerateColumns = false;this.dataGridView1.DataSource = _table; } private void button1_Click(object sender, EventArgs e) { if (this.dataGridView1.CurrentCell != null ) { //this.dataGridView1.CurrentCell.Value = this.richTextBox1.Rtf; this.dataGridView1.Rows[0].Cells[1].Value = this.richTextBox1.Rtf; } } private void button2_Click(object sender, EventArgs e) { OpenFileDialog f = new OpenFileDialog(); f.Filter = "RTF file(*.rtf)|*.rtf"; if (f.ShowDialog() == DialogResult.OK) { this.richTextBox1.LoadFile(f.FileName); } }private void btnHighlight_Click(object sender, EventArgs e){foreach (DataRow row in _table.Rows){SetTextBoldByColumn(row, "col1", this.txtSearch.Text);SetTextBoldByColumn(row, "col2", this.txtSearch.Text);}}private void SetTextBoldByColumn(DataRow row, string colName, string boldText){string plainText;if (row.HasVersion(DataRowVersion.Original))plainText = row[colName, DataRowVersion.Original].ToString();elseplainText = row[colName].ToString();row[colName] = GetRtf(plainText, this.txtSearch.Text);}public string GetRtf(string originalText, string boldText){if(string.IsNullOrEmpty(boldText))return originalText;string rtf = @"{\rtf " originalText.Replace(boldText, @"\b " boldText @"\b0 ") @"}";return rtf;} }}