Hello

#pragma once
 
 
namespace Server {
 
	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;
	using namespace System::Threading;
	using namespace System::Net;
	using namespace System::Net::Sockets;
	using namespace System::IO;
 
	public ref struct wordSet {
		String^ text;
		bool isTyped;
	};
 
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
		}
 
	protected:
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
 
	private: System::Threading::Thread^ serverThread;
	private: System::Net::Sockets::Socket^ serverSocket;
 
	private: System::Windows::Forms::ListBox^  listBoxMsg;
	private: System::Windows::Forms::Button^  btnStart;
	private: System::Windows::Forms::Label^  lblMsg;
 
	private: System::ComponentModel::Container ^components;
 
#pragma region Windows Form Designer generated code
 
		void InitializeComponent(void)
		{
			this->listBoxMsg = (gcnew System::Windows::Forms::ListBox());
			this->btnStart = (gcnew System::Windows::Forms::Button());
			this->lblMsg = (gcnew System::Windows::Forms::Label());
			this->SuspendLayout();
			// 
			// listBoxMsg
			// 
			this->listBoxMsg->Anchor = static_cast<System::Windows::Forms::AnchorStyles>((((System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom) 
				| System::Windows::Forms::AnchorStyles::Left) 
				| System::Windows::Forms::AnchorStyles::Right));
			this->listBoxMsg->FormattingEnabled = true;
			this->listBoxMsg->ItemHeight = 12;
			this->listBoxMsg->Location = System::Drawing::Point(12, 42);
			this->listBoxMsg->Name = L"listBoxMsg";
			this->listBoxMsg->Size = System::Drawing::Size(260, 208);
			this->listBoxMsg->TabIndex = 0;
			// 
			// btnStart
			// 
			this->btnStart->Anchor = static_cast<System::Windows::Forms::AnchorStyles>((System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Right));
			this->btnStart->Location = System::Drawing::Point(197, 12);
			this->btnStart->Name = L"btnStart";
			this->btnStart->Size = System::Drawing::Size(75, 23);
			this->btnStart->TabIndex = 1;
			this->btnStart->Text = L"開始聆聽";
			this->btnStart->UseVisualStyleBackColor = true;
			this->btnStart->Click += gcnew System::EventHandler(this, &Form1::btnStart_Click);
			// 
			// lblMsg
			// 
			this->lblMsg->AutoSize = true;
			this->lblMsg->Location = System::Drawing::Point(12, 17);
			this->lblMsg->Name = L"lblMsg";
			this->lblMsg->Size = System::Drawing::Size(53, 12);
			this->lblMsg->TabIndex = 2;
			this->lblMsg->Text = L"歷史訊息";
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 12);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(284, 262);
			this->Controls->Add(this->lblMsg);
			this->Controls->Add(this->btnStart);
			this->Controls->Add(this->listBoxMsg);
			this->Name = L"Form1";
			this->Text = L"打字遊戲 (伺服端)";
			this->FormClosing += gcnew System::Windows::Forms::FormClosingEventHandler(this, &Form1::Form1_FormClosing);
			this->ResumeLayout(false);
			this->PerformLayout();
 
		}
#pragma endregion
 
	private: delegate System::Void addEventDelegate(String^ s);
 
	private: System::Void addEvent(String^ s) {
				 try {
					 if (this->InvokeRequired) {
						 addEventDelegate^ d = gcnew addEventDelegate(this,  &Server::Form1::addEvent);
						 this->Invoke(d, s);
					 }
					 else {
						 this->listBoxMsg->Items->Insert(0, s);
					 }
				 }
				 catch (Exception^ e) {
					 this->listBoxMsg->Items->Insert(0, e->ToString());
				 }
			 }
 
	private: System::String^ getRandomString() {
				 String^ s = "";
				 Random^ r = gcnew Random((int)DateTime::Now.Ticks);
				 // 產生一組五字元的String
				 for (int i = 0; i < 5; i++) {
					 // 決定大小寫
					 if (r->Next() % 2 == 0) {
						 s += Char('a' + r->Next(26)).ToString();
					 }
					 else {
						 s += Char('A' + r->Next(26)).ToString();
					 }
				 }
				 System::Threading::Thread::Sleep(10);
				 return s;
			 }
 
	private: System::Void generateRandText(array<wordSet^>^ ws) {
				 try {
					 for (int i = 0; i < 5; i++) {
						 ws[i]->text = this->getRandomString();
						 ws[i]->isTyped = false;
					 }	
				 }
				 catch (Exception^ e) {
					 this->addEvent(e->ToString());
				 }
			 }
 
	private: System::Void socketHandler(Object^ tmpSocket) {
				 try
				 {
					String^ recvMsg;
					NetworkStream^ conn = gcnew NetworkStream((Socket^) tmpSocket);
					BinaryReader^ reader = gcnew BinaryReader(conn);
					BinaryWriter^ writer = gcnew BinaryWriter(conn);
					do {
						recvMsg = reader->ReadString();
						this->addEvent("收到訊息: " + recvMsg);
						array<wordSet^>^ ws = gcnew array<wordSet^>(5);
						generateRandText(ws);
						for (int i = 0; i < 5; i++) {
							writer->Write(ws[i]->text + Environment::NewLine);
						}
						// Wait
						System::Threading::Thread::Sleep(10);
					} while (((Socket^)tmpSocket)->Connected);
				 }
				 catch (Exception^ e) {
					 this->addEvent("使用者已斷線, 或發生錯誤");
					 this->addEvent(e->ToString());
				 }
			 }
 
	private: System::Void runServer() {
				 TcpListener^ listener;
				 try {
					 listener = gcnew TcpListener(IPAddress::Parse("127.0.0.1"), 4500);
					 listener->Start();
					 while (true) {
						 this->serverSocket = listener->AcceptSocket();
						 this->addEvent("收到新的連線要求");
						 Thread^ newPlayer = gcnew Thread(gcnew ParameterizedThreadStart(this, &Server::Form1::socketHandler));
						 newPlayer->Start(this->serverSocket);
					 }
				 }
				 catch (SocketException^ se) {
					 this->addEvent(se->ToString());
				 }
				 catch (Exception^ e) {
					 this->addEvent(e->ToString());
				 }
			 }
 
	private: System::Void Form1_FormClosing(System::Object^  sender, System::Windows::Forms::FormClosingEventArgs^  e) {
				 System::Environment::Exit(System::Environment::ExitCode);
			 }
 
	private: System::Void btnStart_Click(System::Object^  sender, System::EventArgs^  e) {
				 this->serverThread = gcnew Thread(gcnew ThreadStart(this, &Form1::runServer));
				 this->serverThread->Start();
				 this->addEvent("開始監聽連線");
			 }
};
}