using?System;
using?System.Collections;
using?System.Collections.Generic;
using?System.Text;

namespace?ServiceProvider
{
???public?interface?MyInter?{?}

????//where?用于類的泛型參數
????public?class?ClassDiversify?where?TKey?:?IComparable?IEnumerable?new（）?where?TValue?:?MyInter?new（）
????{
????????TKey?key?=?new?TKey（）;
????????TValue?value?=?new?TValue（）;
????}

????//嵌套類?可訪問?基類私有成員
????public?class?A
????{
????????private?int?svalue?=?111;

????????public?class?B?:?A
????????{
????????????public?void?GetValue（）
????????????{
????????????????Console.WriteLine（$“this?value?is：{this.svalue}“）;
????????????}

????????}
????}
?????
????//private?只本類或嵌套類可訪問
????//protect?本類或派生類可訪問
????//internal?同個程序集可訪問
????//public???所有訪問


????//類的重寫
????public?class?Father
????{
????????public?virtual?void?Method（）
????????{
????????????Console.WriteLine（“This?is?Father?base?Class“）;
????????}
????}

????public?class?Children?:?Father
????{
????????public?override?void?Method（）
????????{
????????????Console.WriteLine（“This?is?Children?method??override?“）;
????????}
????}

????public?class?Automobile
????{
????????public?Automobile（string?make?string?model?int?year）
????????{
????????????if?（make?==?null）
????????????????throw?new?ArgumentNullException（“The?make?cannot?be?null.“）;
????????????else?if?（String.IsNullOrWhiteSpace（make））
????????????????throw?new?ArgumentException（“make?cannot?be?an?empty?string?or?have?space?characters?only.“）;
????????????Make?=?make;
???????

????????????if?（model?==?null）
????????????????throw?new?ArgumentNullException（“The?model?cannot?be?null.“）;
????????????else?if?（String.IsNullOrWhiteSpace（model））
????????????????throw?new?ArgumentException（“model?cannot?be?an?empty?string?or?have?space?characters?only.“）;
????????????Model?=?model;

????????????if?（year??DateTime.Now.Year?+?2）
????????????????throw?new?ArgumentException（“The?year?is?out?of?range.“）;
????????????Year?=?year;
????????}

????????public?string?Make?{?get;?}

????????public?string?Model?{?get;?}

????????public?int?Year?{?get;?}

????????public?override?string?ToString（）?=>?$“{Year}?{Make}?{Model}“;
????}


????///?

????///?實列??出版物基類
????///?

????public?enum?PublicationType?{?Misc?Book?Magazine?Article?};

????public?abstract?class?Publication
????{
????????private?bool?published?=?false;
????????private?DateTime?datePublished;
????????private?int?totalPages;

????????public?Publication（string?title?string?publisher?PublicationType?type）
????????{
????????????if?（String.IsNullOrWhiteSpace（publisher））
????????????????throw?new?ArgumentException（“The?publisher?is?required.“）;
????????????Publisher?=?publisher;

????????????if?（String.IsNullOrWhiteSpace（title））
????????????????throw?new?ArgumentException（“The?title?is?required.“）;
????????????title?=?title;

????????????Type?=?type;
????????}

????????pu

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????231838??2020-08-18?18:29??ServiceProvider\.vs\ServiceProvider\DesignTimeBuild\.dtbcache

????..A..H.?????27648??2020-08-19?16:50??ServiceProvider\.vs\ServiceProvider\v16\.suo

?????文件??????????0??2020-08-17?16:40??ServiceProvider\.vs\ServiceProvider\v16\Server\sqlite3\db.lock

?????文件?????696320??2020-08-19?16:50??ServiceProvider\.vs\ServiceProvider\v16\Server\sqlite3\storage.ide

?????文件??????37760??2020-07-22?00:42??ServiceProvider\ServiceProvider\bin\Debug\netcoreapp3.1\Microsoft.Extensions.DependencyInjection.Abstractions.dll

?????文件??????72576??2020-07-22?00:41??ServiceProvider\ServiceProvider\bin\Debug\netcoreapp3.1\Microsoft.Extensions.DependencyInjection.dll

?????文件???????2048??2020-08-17?17:40??ServiceProvider\ServiceProvider\bin\Debug\netcoreapp3.1\ServiceProvider.deps.json

?????文件??????13824??2020-08-19?16:46??ServiceProvider\ServiceProvider\bin\Debug\netcoreapp3.1\ServiceProvider.dll

?????文件?????169984??2020-08-19?16:46??ServiceProvider\ServiceProvider\bin\Debug\netcoreapp3.1\ServiceProvider.exe

?????文件???????3644??2020-08-19?16:46??ServiceProvider\ServiceProvider\bin\Debug\netcoreapp3.1\ServiceProvider.pdb

?????文件????????238??2020-08-17?17:40??ServiceProvider\ServiceProvider\bin\Debug\netcoreapp3.1\ServiceProvider.runtimeconfig.dev.json

?????文件????????154??2020-08-17?17:40??ServiceProvider\ServiceProvider\bin\Debug\netcoreapp3.1\ServiceProvider.runtimeconfig.json

?????文件???????7101??2020-08-19?16:44??ServiceProvider\ServiceProvider\ClassDiversify.cs

?????文件????????803??2020-08-17?17:45??ServiceProvider\ServiceProvider\interfaceprovider.cs

?????文件???????1028??2020-08-17?16:40??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.AssemblyInfo.cs

?????文件?????????42??2020-08-17?16:40??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.AssemblyInfoInputs.cache

?????文件???????1618??2020-08-17?16:45??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.assets.cache

?????文件??????????0??2020-08-19?16:46??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.csproj.CopyComplete

?????文件???????1578??2020-08-18?11:30??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.csproj.FileListAbsolute.txt

?????文件????????424??2020-08-19?16:46??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.csprojAssemblyReference.cache

?????文件??????13824??2020-08-19?16:46??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.dll

?????文件?????169984??2020-08-19?16:46??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.exe

?????文件???????3644??2020-08-19?16:46??ServiceProvider\ServiceProvider\obj\Debug\netcoreapp3.1\ServiceProvider.pdb

?????文件???????4975??2020-08-17?16:45??ServiceProvider\ServiceProvider\obj\project.assets.json

?????文件????????149??2020-08-17?16:45??ServiceProvider\ServiceProvider\obj\ServiceProvider.csproj.nuget.cache

?????文件???????2316??2020-08-17?16:45??ServiceProvider\ServiceProvider\obj\ServiceProvider.csproj.nuget.dgspec.json

?????文件???????1167??2020-08-17?16:40??ServiceProvider\ServiceProvider\obj\ServiceProvider.csproj.nuget.g.props

?????文件????????294??2020-08-17?16:40??ServiceProvider\ServiceProvider\obj\ServiceProvider.csproj.nuget.g.targets

?????文件???????3877??2020-08-19?16:46??ServiceProvider\ServiceProvider\Program.cs

?????文件???????1310??2020-08-18?16:40??ServiceProvider\ServiceProvider\property.cs

............此處省略19個文件信息