replace.cs

改程序实现了记事本的一些基本操作

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace jishiben
{
    public delegate void rsearchEventHandler(object sender, SearchEventArgs e);
    public delegate void replaceEventHandler(object sender, SearchEventArgs f);
    public partial class replace : Form
    {
        private bool searched = false;
        public bool cBrcheched
        {
            get
            {
                return this.cB_qufened.Checked;
            }
        }
        private SearchEventArgs seae = new SearchEventArgs();
        private SearchEventArgs seaf = new SearchEventArgs();
        public event rsearchEventHandler Search;
        public event replaceEventHandler Replace;
        private void OnSearch()//查找
        {
            rsearchEventHandler handler = Search;
            if (handler != null)
            {

                if (handler.Target is System.ComponentModel.ISynchronizeInvoke)
                {
                    System.ComponentModel.ISynchronizeInvoke aSynch = handler.Target as System.ComponentModel.ISynchronizeInvoke;
                    if (aSynch.InvokeRequired)
                    {
                        object[] args = new object[] { this, seae };
                        aSynch.Invoke(handler, args);
                    }
                    else
                    {
                        handler(this, seae);
                    }
                }
                else
                {

                    handler(this, seae);
                }
            }
            else
            {
                MessageBox.Show("事件为空!");
            }

        }
        private void OnReplace()//替换
        {
            replaceEventHandler handler = Replace;
            if (handler != null)
            {

                if (handler.Target is System.ComponentModel.ISynchronizeInvoke)
                {
                    System.ComponentModel.ISynchronizeInvoke aSynch = handler.Target as System.ComponentModel.ISynchronizeInvoke;
                    if (aSynch.InvokeRequired)
                    {
                        object[] args = new object[] { this, seaf };
                        aSynch.Invoke(handler, args);
                    }
                    else
                    {
                        handler(this, seaf);
                    }
                }
                else
                {

                    handler(this, seaf);
                }
            }
            else
            {
                MessageBox.Show("事件为空!");
            }

        }
        public replace()
        {
            InitializeComponent();
        }

        private void btnsearchnext_Click(object sender, EventArgs e)
        {
            if (tBsearcher.Text == "")
            {
                MessageBox.Show("请输入查找内容！");
            }
            else
            {
                seae.Searchstring = tBsearcher.Text;
                if (SearchEventArgs.Replaceed == true)
                {
                    SearchEventArgs.Replaceed = true;
                }
                else
                {
                    SearchEventArgs.Replaceed = false;
                }
                OnSearch();
                searched = true;
            }
        }

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

        private void btnreplace_Click(object sender, EventArgs e)
        {
            if (searched)
            {
                seaf.Searchstring = tBreplace.Text;
                SearchEventArgs.Replaceed = false;
                OnReplace();
                searched = false;
            }
            else
            {
                btnsearchnext.PerformClick();
                //btnreplace.PerformClick();
            }
        }

        private void btnreplaceall_Click(object sender, EventArgs e)
        {
            do
            {
                SearchEventArgs.Replaceed = true;
                btnsearchnext.PerformClick();
                btnreplace.PerformClick();
            } while (jishiben.replacecount > 0);
        }

        private void replace_HelpButtonClicked(object sender, CancelEventArgs e)
        {
            MessageBox.Show("替换帮助");
        }
    }
}