C2882: 'ClassLibrary2' : illegal use of namespace identifier in expression

Question

I am working on a class library project using c++ to create the function that I want to use to call the function from my windows application. When I try this:

ClassLibrary2a^ class1a = gcnew ClassLibrary2a;

I am getting the errors:

C2882: 'ClassLibrary2a' : illegal use of namespace identifier in expression

C2065: 'class1a' : undeclared identifier

C2061: syntax error : identifier 'ClassLibrary2a'

I have added the ClassLibrary2a dll in the reference but it have make no different as I am still getting the same errors.

Here is my form code:

#pragma once


namespace test_window_application {

    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 ClassLibrary2a;


    /// <summary>
    /// Summary for Form1
    ///
    /// 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 Form1 : public System::Windows::Forms::Form
    {
    public:
        Form1(void)
        {
            InitializeComponent();
            //
            //TODO: Add the constructor code here
            //
        }

    protected:
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        ~Form1()
        {
            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(78, 116);
            this->button1->Name = L"button1";
            this->button1->Size = System::Drawing::Size(75, 23);
            this->button1->TabIndex = 0;
            this->button1->Text = L"button1";
            this->button1->UseVisualStyleBackColor = true;
            this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
            // 
            // Form1
            // 
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(284, 262);
            this->Controls->Add(this->button1);
            this->Name = L"Form1";
            this->Text = L"Form1";
            this->ResumeLayout(false);

        }
#pragma endregion
    private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
                 //ClassLibrary2a^ class1a = gcnew ClassLibrary2a::Class1;
                 ClassLibrary2a^ class1a = gcnew ClassLibrary2a;
                 

             }
    };
}

Here is the ClassLibrary2a code:

// ClassLibrary2a.h

#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::Diagnostics;
using namespace System::IO;


[CODE]namespace ClassLibrary2a {

    public ref class Class1
    {
        // TODO: Add your methods for this class here.
        public: void MyMethodNew() {
            // Do something in the method
            //ContactsControl^ contact = gcnew ContactsControl();
            //contact->label1->Text = "hello chris";
            MessageBox::Show("message", "title");
        }
    };

    
}

I dont really understand why I am getting the errors as it doesn't make any sense. I have included the using namespace ClassLibrary2a but it have make no different. I am using managed c++/cli

Do you know why I am getting the errors?

Do you know how I can fix it?

I have tried everything included the namespace and added in the reference but it have make no different. I couldn't be able to find out myself how to resolve it.