winforms — C ++ Windows формы закрыть окно при получении данных последовательного

Я новичок здесь, и новые формы Windows.
Я пытаюсь заставить окно ждать получения данных от arduino, когда данные получены, окно должно закрыться.
До сих пор я был в состоянии это сделать, но я ничего не могу сделать в окне, когда оно открывается. Du у вас есть какие-либо предложения, как это сделать.

Код здесь:

#pragma once

namespace CppWinForm1 {

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::IO::Ports;public ref class password : public System::Windows::Forms::Form
{
public:
password(void)
{
InitializeComponent();
this->serialPort2->Open();
}

protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~password()
{
if (components)
{
delete components;
}
}
private: System::Windows::Forms::Label^  label1;
public: System::IO::Ports::SerialPort^  serialPort2;
private: System::Windows::Forms::Timer^  timer1;
private: System::Windows::Forms::Button^  button1;
private: System::ComponentModel::IContainer^  components;

private:#pragma region Windows Form Designer generated code

void InitializeComponent(void)
{
this->components = (gcnew System::ComponentModel::Container());
System::ComponentModel::ComponentResourceManager^  resources = (gcnew System::ComponentModel::ComponentResourceManager(password::typeid));
this->label1 = (gcnew System::Windows::Forms::Label());
this->serialPort2 = (gcnew System::IO::Ports::SerialPort(this->components));
this->timer1 = (gcnew System::Windows::Forms::Timer(this->components));
this->button1 = (gcnew System::Windows::Forms::Button());
this->SuspendLayout();
//
// label1
//
this->label1->AutoSize = true;
this->label1->Location = System::Drawing::Point(192, 70);
this->label1->Name = L"label1";
this->label1->Size = System::Drawing::Size(330, 25);
this->label1->TabIndex = 0;
this->label1->Text = L"Indtast password på DE2 boardet";
this->label1->Click += gcnew System::EventHandler(this, &password::label1_Click);
//
// serialPort2
//
this->serialPort2->PortName = L"COM5";
//
// timer1
//
this->timer1->Enabled = true;
this->timer1->Interval = 1;
this->timer1->Tick += gcnew System::EventHandler(this, &password::timer1_Tick);
//
// button1
//
this->button1->Location = System::Drawing::Point(197, 123);
this->button1->Name = L"button1";
this->button1->Size = System::Drawing::Size(325, 57);
this->button1->TabIndex = 1;
this->button1->Text = L"Tilbage";
this->button1->UseVisualStyleBackColor = true;
this->button1->Click += gcnew System::EventHandler(this, &password::button1_Click_1);
//
// password
//
this->AutoScaleDimensions = System::Drawing::SizeF(12, 25);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(738, 280);
this->Controls->Add(this->button1);
this->Controls->Add(this->label1);
this->Icon = (cli::safe_cast<System::Drawing::Icon^>(resources->GetObject(L"$this.Icon")));
this->Name = L"password";
this->Text = L"password";
this->Load += gcnew System::EventHandler(this, &password::password_Load);
this->ResumeLayout(false);
this->PerformLayout();

}
#pragma endregion
private: System::Void label1_Click(System::Object^  sender, System::EventArgs^  e) {
}private: System::Void password_Load(System::Object^  sender, System::EventArgs^  e) {
this->timer1->Start();
}

private: System::Void timer1_Tick(System::Object^  sender, System::EventArgs^  e) {
this->serialPort2->WriteLine("3");
char ch = this->serialPort2->ReadLine()[0];
int x = ch - 48;
if (x == 1)
{
this->serialPort2->Close();
this->timer1->Stop();
Close();
}
}

private: System::Void button1_Click_1(System::Object^  sender, System::EventArgs^  e) {
this->serialPort2->Close();
this->timer1->Stop();
Close();
}
};
}