Encontrar.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.IO;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;
namespace InfraCodeEditor
{
    public partial class Encontrar : Form
    {
        RichTextBox richtext;
        public Encontrar(RichTextBox R)
        {
            InitializeComponent();
            richtext = R;
        }

        public static void Find(RichTextBox rtb,String word,Color color)
        {
            if(word=="")
            {
                return;
            }
            int s_start = rtb.SelectionStart, startIndex = 0, index;
            while((index=rtb.Text.IndexOf(word,startIndex))!=-1)
            {
                rtb.Select(index, word.Length);
                rtb.SelectionColor = color;
                startIndex = index + word.Length;
            }
            rtb.SelectionStart = s_start;
            rtb.SelectionLength = 0;
            rtb.SelectionColor=Color.Black;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Find(richtext, textBox1.Text, Color.Gray);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void Find_Form_Load(object sender, EventArgs e)
        {
            
        }
    }
}