Do I have to deallocate gcnew System::EventHandler?

So I'm making my first windows application in windows forms and I have noticed that when I press a button multiple times in a row RAM usage rises. I thought I had memory leaks and I found this:

this->button_to_decompress->Click += gcnew System::EventHandler(this, &MyForm::button_to_decompress_Click);

Do I have to manually deallocate this? And if so how do I do that?

My whole code:

#pragma once
#include <msclr/marshal_cppstd.h>
#include "tree.h"

using namespace msclr::interop;

namespace CompressionTool {

    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;

    /// <summary>
    /// 
    /// </summary>
    public ref class MyForm : public System::Windows::Forms::Form
    {
    public:
        MyForm(void)
        {
            InitializeComponent();
        }

    protected:
        /// <summary>
        /// 
        /// </summary>
        ~MyForm()
        {
            if (components)
            {
                delete components;
            }
        }
    private: System::Windows::Forms::ProgressBar^ progressBar1;
    protected:
    private: System::Windows::Forms::Button^ button_to_compress;
    private: System::Windows::Forms::Button^ button_to_decompress;
    private: System::Windows::Forms::OpenFileDialog^ openFileDialog1;
    private: System::Windows::Forms::OpenFileDialog^ openFileDialog2;
    private: System::Windows::Forms::SaveFileDialog^ saveFileDialog1;
    private: System::Windows::Forms::SaveFileDialog^ saveFileDialog2;


    private:
        /// <summary>
        /// 
        /// </summary>
        System::ComponentModel::Container^ components;

#pragma region Windows Form Designer generated code
        /// <summary>
        /// 
        /// 
        /// </summary>
        void InitializeComponent(void)
        {
            this->progressBar1 = (gcnew System::Windows::Forms::ProgressBar());
            this->button_to_compress = (gcnew System::Windows::Forms::Button());
            this->button_to_decompress = (gcnew System::Windows::Forms::Button());
            this->openFileDialog1 = (gcnew System::Windows::Forms::OpenFileDialog());
            this->openFileDialog2 = (gcnew System::Windows::Forms::OpenFileDialog());
            this->saveFileDialog1 = (gcnew System::Windows::Forms::SaveFileDialog());
            this->saveFileDialog2 = (gcnew System::Windows::Forms::SaveFileDialog());
            this->SuspendLayout();
            // 
            // progressBar1
            // 
            this->progressBar1->Location = System::Drawing::Point(12, 144);
            this->progressBar1->Margin = System::Windows::Forms::Padding(3, 2, 3, 2);
            this->progressBar1->MarqueeAnimationSpeed = 20;
            this->progressBar1->Name = L"progressBar1";
            this->progressBar1->Size = System::Drawing::Size(557, 60);
            this->progressBar1->Style = System::Windows::Forms::ProgressBarStyle::Marquee;
            this->progressBar1->TabIndex = 0;
            this->progressBar1->Value = 100;
            // 
            // button_to_compress
            // 
            this->button_to_compress->Location = System::Drawing::Point(12, 12);
            this->button_to_compress->Margin = System::Windows::Forms::Padding(3, 2, 3, 2);
            this->button_to_compress->Name = L"button_to_compress";
            this->button_to_compress->Size = System::Drawing::Size(131, 60);
            this->button_to_compress->TabIndex = 1;
            this->button_to_compress->Text = L"Compress file";
            this->button_to_compress->UseVisualStyleBackColor = true;
            this->button_to_compress->Click += gcnew System::EventHandler(this, &MyForm::button_to_compress_Click);
            // 
            // button_to_decompress
            // 
            this->button_to_decompress->Location = System::Drawing::Point(12, 78);
            this->button_to_decompress->Margin = System::Windows::Forms::Padding(3, 2, 3, 2);
            this->button_to_decompress->Name = L"button_to_decompress";
            this->button_to_decompress->Size = System::Drawing::Size(131, 60);
            this->button_to_decompress->TabIndex = 2;
            this->button_to_decompress->Text = L"Decompress file";
            this->button_to_decompress->UseVisualStyleBackColor = true;
            this->button_to_decompress->Click += gcnew System::EventHandler(this, &MyForm::button_to_decompress_Click);
            // 
            // openFileDialog1
            // 
            this->openFileDialog1->FileName = L"openFileDialog1";
            // 
            // openFileDialog2
            // 
            this->openFileDialog2->FileName = L"openFileDialog2";
            // 
            // MyForm
            // 
            this->AutoScaleDimensions = System::Drawing::SizeF(8, 16);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(581, 217);
            this->Controls->Add(this->button_to_decompress);
            this->Controls->Add(this->button_to_compress);
            this->Controls->Add(this->progressBar1);
            this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::FixedToolWindow;
            this->Margin = System::Windows::Forms::Padding(3, 2, 3, 2);
            this->MaximizeBox = false;
            this->Name = L"MyForm";
            this->Text = L"CompressionTool";
            this->ResumeLayout(false);
        }
#pragma endregion
    private: System::Void button_to_compress_Click(System::Object^ sender, System::EventArgs^ e)
    {
        OpenFileDialog^ openFileDialog1 = gcnew OpenFileDialog;

        openFileDialog1->InitialDirectory = "c:\\";
        openFileDialog1->Filter = "txt files (*.txt)|*.txt";
        openFileDialog1->FilterIndex = 1;
        openFileDialog1->RestoreDirectory = true;

        if (openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
        {
            Node node;
            Tree tree;
            const char* directory;
            marshal_context^ context = gcnew marshal_context();
            directory = context->marshal_as<const char*>(openFileDialog1->FileName);
            tree.root = node.first_read_of_the_file(directory);
            node.sort_list(tree.root);
            node.make_tree(tree.root);
            tree.create_compressed_file(directory);
            tree.delete_tree(tree.root);

            SaveFileDialog^ saveFileDialog1 = gcnew SaveFileDialog;

            saveFileDialog1->InitialDirectory = "c:\\";
            saveFileDialog1->Filter = "huf files (*.huf)|*.huf";
            saveFileDialog1->FilterIndex = 1;
            saveFileDialog1->RestoreDirectory = true;

            if (saveFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
            {
                directory = context->marshal_as<const char*>(saveFileDialog1->FileName);
                int result = rename("compressed.huf", directory);
            }
            else
                remove("compressed.huf");

            delete context;
            delete saveFileDialog1;
        }

        delete openFileDialog1;
    }
    
    private: System::Void button_to_decompress_Click(System::Object^ sender, System::EventArgs^ e)
    {
        OpenFileDialog^ openFileDialog2 = gcnew OpenFileDialog;

        openFileDialog2->InitialDirectory = "c:\\";
        openFileDialog2->Filter = "huf files (*.huf)|*.huf";
        openFileDialog2->FilterIndex = 1;
        openFileDialog2->RestoreDirectory = true;

        if (openFileDialog2->ShowDialog() == System::Windows::Forms::DialogResult::OK)
        {
            Tree tree;
            const char* directory;
            marshal_context^ context = gcnew marshal_context();
            directory = context->marshal_as<const char*>(openFileDialog2->FileName);
            tree.decompress_file(directory);
            tree.delete_tree(tree.root);

            SaveFileDialog^ saveFileDialog2 = gcnew SaveFileDialog;

            saveFileDialog2->InitialDirectory = "c:\\";
            saveFileDialog2->Filter = "txt files (*.txt)|*.txt";
            saveFileDialog2->FilterIndex = 1;
            saveFileDialog2->RestoreDirectory = true;

            if (saveFileDialog2->ShowDialog() == System::Windows::Forms::DialogResult::OK)
            {
                directory = context->marshal_as<const char*>(saveFileDialog2->FileName);
                int result = rename("decompressed.txt", directory);
            }
            else
                remove("decompressed.txt");

            delete context;
            delete saveFileDialog2;
        }

        delete openFileDialog2;
    }
};
}

If you have any suggestions on how to improve my code I would be very grateful!

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