C++ CLR UI 冻结

Question

所以基本上我的 CLR C++ 项目在我按下按钮后冻结。按下后，应该会出现一个 openfiledialog，并允许用户选择一个 .txt 文件或任何其他文件，但是在调用 button_click 函数后，它会冻结，没有错误，没有警告只是冻结。

#pragma once

namespace AttarUi {

    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 for MainForm
    /// </summary>
    public ref class MainForm : public System::Windows::Forms::Form
    {
    public:
        MainForm(void)
        {
            InitializeComponent();
            //
            //TODO: Add the constructor code here
            //
        }

    protected:
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// [
        
        [STAThread]
        ~MainForm()
        {
            if (components)
            {
                delete components;
            }
        }
    private: System::Windows::Forms::Button^ button1;
    protected:

    private:
        /// <summary>
        /// Required designer variable.
        /// </summary>
        System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        void InitializeComponent(void)
        {
            this->button1 = (gcnew System::Windows::Forms::Button());
            this->SuspendLayout();
            // 
            // button1
            // 
            this->button1->Location = System::Drawing::Point(154, 72);
            this->button1->Name = L"button1";
            this->button1->Size = System::Drawing::Size(290, 111);
            this->button1->TabIndex = 0;
            this->button1->Text = L"show dialog";
            this->button1->UseVisualStyleBackColor = true;
            this->button1->Click += gcnew System::EventHandler(this, &MainForm::button1_Click);
            // 
            // MainForm
            // 
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(636, 264);
            this->Controls->Add(this->button1);
            this->Name = L"MainForm";
            this->Text = L"MainForm";
            this->ResumeLayout(false);

        }
#pragma endregion

    private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e)
    {
        Stream^ MyStream;
        OpenFileDialog^ ofd1;
        ofd1 = gcnew OpenFileDialog();
        ofd1->InitialDirectory = "c:\\";
        ofd1->Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
        ofd1->FilterIndex = 2;
        ofd1->RestoreDirectory = true;

        if (ofd1->ShowDialog() == Windows::Forms::DialogResult::OK)
        {
            if ((MyStream = ofd1->OpenFile()) != nullptr)
            {
                MyStream->Close();
            }
        }
    }
    };
}

button1_Click 冻结我的应用程序。这是我的主要功能：

#include "MainForm.h"

using namespace System;
using namespace System::Windows::Forms;

[STAThread]

void main(array<String^>^ args)
{

    Application::EnableVisualStyles();
    Application::SetCompatibleTextRenderingDefault(false);
    AttarUi::MainForm form;
    Application::Run(% form);
}

我不明白我需要做什么。谁能帮帮我？？？？

我希望 openFileDialog 出现，但没有任何反应，UI 冻结。