Mixing .NET and native code

#pragma once

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;


namespace AdR {
   namespace Samples {
      namespace NativeCallingCLR {
         namespace ConsoleWithMFCAndCLR {

	/// <summary>
	/// Summary for FileContentFrm
	///
	/// WARNING: If you change the name of this class, you will need to change the
	///          'Resource File Name' property for the managed resource compiler tool
	///          associated with all .resx files this class depends on.  Otherwise,
	///          the designers will not be able to interact properly with localized
	///          resources associated with this form.
	/// </summary>
	public ref class FileContentFrm : public System::Windows::Forms::Form
	{
	public:
		FileContentFrm(void)
		{
			InitializeComponent();
			//
			//TODO: Add the constructor code here
			//
		}

	protected:
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		~FileContentFrm()
		{
			if (components)
			{
				delete components;
			}
		}
   public: System::Windows::Forms::TextBox^  txtFileContent;
   protected: 

   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)
		{
         System::Windows::Forms::Button^  btnClose;
         this->txtFileContent = (gcnew System::Windows::Forms::TextBox());
         btnClose = (gcnew System::Windows::Forms::Button());
         this->SuspendLayout();
         // 
         // btnClose
         // 
         btnClose->Anchor = System::Windows::Forms::AnchorStyles::Bottom;
         btnClose->Location = System::Drawing::Point(259, 331);
         btnClose->Name = L"btnClose";
         btnClose->Size = System::Drawing::Size(75, 23);
         btnClose->TabIndex = 1;
         btnClose->Text = L"&Close";
         btnClose->UseVisualStyleBackColor = true;
         btnClose->Click += gcnew System::EventHandler(this, &FileContentFrm::btnClose_Click);
         // 
         // txtFileContent
         // 
         this->txtFileContent->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->txtFileContent->BackColor = System::Drawing::SystemColors::Window;
         this->txtFileContent->Font = (gcnew System::Drawing::Font(L"Courier New", 8.25F, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point, 
            static_cast<System::Byte>(0)));
         this->txtFileContent->Location = System::Drawing::Point(12, 12);
         this->txtFileContent->Multiline = true;
         this->txtFileContent->Name = L"txtFileContent";
         this->txtFileContent->ReadOnly = true;
         this->txtFileContent->ScrollBars = System::Windows::Forms::ScrollBars::Both;
         this->txtFileContent->Size = System::Drawing::Size(568, 313);
         this->txtFileContent->TabIndex = 0;
         // 
         // FileContentFrm
         // 
         this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
         this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
         this->ClientSize = System::Drawing::Size(592, 366);
         this->Controls->Add(btnClose);
         this->Controls->Add(this->txtFileContent);
         this->Name = L"FileContentFrm";
         this->ShowInTaskbar = false;
         this->SizeGripStyle = System::Windows::Forms::SizeGripStyle::Show;
         this->StartPosition = System::Windows::Forms::FormStartPosition::CenterParent;
         this->Text = L"File content";
         this->Load += gcnew System::EventHandler(this, &FileContentFrm::FileContentFrm_Load);
         this->ResumeLayout(false);
         this->PerformLayout();

      }
#pragma endregion

   private:
      System::Void btnClose_Click(System::Object^ sender, System::EventArgs^ e)
      {
         UNREFERENCED_PARAMETER(sender);
         UNREFERENCED_PARAMETER(e);
         Close();
      }
   private: System::Void FileContentFrm_Load(System::Object^ sender, System::EventArgs^ e)
      {
         UNREFERENCED_PARAMETER(sender);
         UNREFERENCED_PARAMETER(e);

         this->txtFileContent->SelectionStart = 0;
         this->txtFileContent->SelectionLength = 0;
      }
   };
} } } }