C# 自定义记事本（可设置文字 加粗、斜体、字体、字号）

一个简单的记事本，适合C#入门

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Text;
using System.Windows.Forms;
using System.IO;
using System.Collections;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }
        //窗体下拉时加载字体
        private void toolStripComboBoxFonts_DropDown（object sender EventArgs e）
        {
            InstalledFontCollection myFonts = new InstalledFontCollection（）;
            //获取InstalledFontCollection对象的数组
            FontFamily[] ff = myFonts.Families;
            //生米一个A

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2020-02-09 14:44  记事本\
     目录           0  2020-02-10 20:12  记事本\WindowsFormsApplication1\
     文件        1041  2020-02-09 14:44  记事本\WindowsFormsApplication1.sln
     文件       36352  2020-02-17 20:47  记事本\WindowsFormsApplication1.v12.suo
     文件         187  2020-02-09 14:44  记事本\WindowsFormsApplication1\App.config
     目录           0  2020-02-09 14:44  记事本\WindowsFormsApplication1\bin\
     目录           0  2020-02-10 15:42  记事本\WindowsFormsApplication1\bin\Debug\
     文件       17408  2020-02-10 20:12  记事本\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
     文件         187  2020-02-09 14:44  记事本\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe.config
     文件       28160  2020-02-10 20:12  记事本\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb
     文件       24224  2020-02-17 20:46  记事本\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe
     文件         187  2020-02-09 14:44  记事本\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.config
     文件         490  2019-03-19 12:46  记事本\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.manifest
     文件        4968  2020-02-10 20:12  记事本\WindowsFormsApplication1\Form1.cs
     文件        9745  2020-02-10 20:03  记事本\WindowsFormsApplication1\Form1.Designer.cs
     文件       11266  2020-02-10 20:03  记事本\WindowsFormsApplication1\Form1.resx
     目录           0  2020-02-09 14:44  记事本\WindowsFormsApplication1\obj\
     目录           0  2020-02-10 20:12  记事本\WindowsFormsApplication1\obj\Debug\
     文件        1453  2020-02-09 14:50  记事本\WindowsFormsApplication1\obj\Debug\DesignTimeResolveAssemblyReferences.cache
     文件        7027  2020-02-09 14:51  记事本\WindowsFormsApplication1\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
     文件           0  2020-02-09 14:44  记事本\WindowsFormsApplication1\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs
     文件           0  2020-02-09 14:44  记事本\WindowsFormsApplication1\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs
     文件           0  2020-02-09 14:44  记事本\WindowsFormsApplication1\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs
     目录           0  2020-02-09 14:44  记事本\WindowsFormsApplication1\obj\Debug\TempPE\
     文件         969  2020-02-17 20:46  记事本\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csproj.FileListAbsolute.txt
     文件         977  2020-02-10 20:12  记事本\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csproj.GenerateResource.Cache
     文件        2211  2020-02-10 15:42  记事本\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csprojResolveAssemblyReference.cache
     文件       17408  2020-02-10 20:12  记事本\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.exe
     文件        3626  2020-02-10 20:12  记事本\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Form1.resources
     文件       28160  2020-02-10 20:12  记事本\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.pdb
     文件         180  2020-02-10 15:42  记事本\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Properties.Resources.resources
............此处省略8个文件信息