批量查找替换工具(C#)

自己写了了个批量查找替换工具(C#)，目前已知问题有查找速度不够快，假死现象等。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
/*
author:wgscd
date:2020-11-30
email:wgscd@126.com
 */
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using System.Windows.Forms;
using System.Diagnostics;

namespace ADFindAndReplace
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            DATA_GRID.DataContext = resultList;
        }

        bool isReplace = false;
        bool includeSubFolder = false;
        string searchPattern = "*.*";
        string replaceWords = "";
        ObservableCollection<Result> resultList = new ObservableCollection<Result>();
        private void btnSearch_Click(object sender, RoutedEventArgs e)
        {
            isReplace = false;

            doWork();

        }
        private void btnReplace_Click(object sender, RoutedEventArgs e)
        {
            isReplace = true;
            replaceWords = txtReplace.Text;
            doWork();
        }

        void doWork()
        {
            if (txtPath.Text.Trim() == "" || txtWords.Text == "" || txtFileType.Text.Trim() == "")
            {
                System.Windows.MessageBox.Show("please fill setting");
                return;
            }
            if (isReplace)
            {
                if (txtReplace.Text == "")
                {

                    return;
                }

            }

            includeSubFolder = (bool)ckSubfolder.IsChecked;
            searchPattern = txtFileType.Text;
            resultList.Clear();

            string path = txtPath.Text.Trim();
            string words = txtWords.Text;
            try
            {

                getFiles(path, words);
            }
            catch (Exception ex)
            {

                System.Windows.MessageBox.Show(ex.Message);
            }

        }
        void getFiles(string path, string words)
        {

            string[] fileList = new string[] { };
            if (includeSubFolder)
            {
                fileList = Directory.GetFiles(path, searchPattern, SearchOption.AllDirectories);
            }
            else
            {
                fileList = Directory.GetFiles(path, searchPattern);
            }
            foreach (string f in fileList)
            {

                try
                {
                    var str = File.ReadAllText(f);
                    if (str.Contains(words))
                    {
                        int i = str.IndexOf(words);
                        resultList.Add(new Result() { FilePath = f, Briefwords = "" + str.PadLeft(8).PadRight(8).Substring(i - 8, 8 + words.Length) });
                        if (isReplace)
                        {
                            File.WriteAllText(f, str.Replace(words, replaceWords));
                        }
                    }
                }
                catch (Exception ex)
                {

                    Debug.Print(ex.Message);
                }

            }

        }

        private void btnSelectFolder_Click(object sender, RoutedEventArgs e)
        {
            FolderBrowserDialog df = new FolderBrowserDialog();
            //df.Description = "select path";
            df.ShowNewFolderButton = false;
            DialogResult result = df.ShowDialog();
            if (result == System.Windows.Forms.DialogResult.OK)
            {
                txtPath.Text = df.SelectedPath;
            }

        }
    }
    public class Result : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private string filePath { get; set; }
        private string briefwords { get; set; }
        private int lineNumber { get; set; }

        public string FilePath
        {

            get
            {
                return filePath;

            }

            set
            {
                filePath = value;
                NotifyChanged("FilePath");
            }

        }
        public string Briefwords
        {

            get
            {
                return briefwords;

            }

            set
            {
                briefwords = value;
                NotifyChanged("Briefwords");
            }

        }
        public int LineNumber
        {

            get
            {
                return lineNumber;

            }

            set
            {
                lineNumber = value;
                NotifyChanged("LineNumber");
            }

        }
        void NotifyChanged(string propName)
        {

            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propName));
            }
        }
    }
}

　　

<Window x:Class="ADFindAndReplace.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:ADFindAndReplace"
        mc:Ignorable="d"
        Title="ADFindAndReplace" Height="450" Width="883">
    <Grid>
        <Label   HorizontalAlignment="Left" Height="23" Margin="0,21,0,0"  Content="serach words:" VerticalAlignment="Top" Width="90"/>

        <TextBox x:Name="txtWords"  HorizontalAlignment="Left" Height="23" Margin="113,21,0,0" TextWrapping="Wrap" Text="wgscd" VerticalAlignment="Top" Width="551"/>
        <Label   HorizontalAlignment="Left" Height="23" Margin="10,51,0,0"  Content="serach Path:" VerticalAlignment="Top" Width="90"/>

        <TextBox x:Name="txtPath" HorizontalAlignment="Left" Height="23" Margin="113,51,0,0" TextWrapping="Wrap" Text="c:\" VerticalAlignment="Top" Width="200"/>
        <Button  x:Name="btnSelectFolder" HorizontalAlignment="Left" Height="21" Margin="318,53,0,0" Content="...Bowser" VerticalAlignment="Top" Width="60" Click="btnSelectFolder_Click"/>

        <CheckBox  x:Name="ckSubfolder" VerticalContentAlignment="Center" HorizontalAlignment="Left" Height="23" Margin="392,51,0,0" Content="include sub folders" VerticalAlignment="Top" Width="134"/>

        <Label   HorizontalAlignment="Left" Height="25" Margin="531,53,0,0"  Content="File Type:" VerticalAlignment="Top" Width="60"/>

        <TextBox x:Name="txtFileType" ToolTip="*.*;*.txt;*.doc etc.." Text="*.*" HorizontalAlignment="Left" Height="23" Margin="611,55,0,0"   VerticalAlignment="Top" Width="53">

        </TextBox>
        <Label   HorizontalAlignment="Left" Height="23" Margin="10,88,0,0"  Content="Replace Words:" VerticalAlignment="Top" Width="90"/>
        <TextBox x:Name="txtReplace" HorizontalAlignment="Left" Height="23" Margin="113,88,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="225"/>

        <Button x:Name="btnSearch" Content="Search" HorizontalAlignment="Left" Margin="688,13,0,0" VerticalAlignment="Top" Width="104" Height="42" Click="btnSearch_Click"/>
        <Button x:Name="btnReplace" Content="Replace" HorizontalAlignment="Left" Margin="688,73,0,0" VerticalAlignment="Top" Width="104" Height="38" Click="btnReplace_Click"/>

        <DataGrid x:Name="DATA_GRID" ItemsSource="{Binding}" AutoGenerateColumns="False" Margin="0,128,0,34">
            <DataGrid.Columns>
                <DataGridTextColumn Header="file" Binding="{Binding FilePath}" MinWidth="422"/>
                <DataGridTextColumn Header="Briefwords" Binding="{Binding Briefwords}"/>
            </DataGrid.Columns>
        </DataGrid>
        <Label Name="lbState" Height="29" Content="Ready" VerticalAlignment="Bottom"/>
    </Grid>
</Window>