uploading picture

I wonder why this error still appears:

http://127.0.0.1/CompanyGiondaCI/index.p...ile/upload

404 Page Not Found
The page you requested was not found.


------------------------------------------------------------------

config/config.php

PHP Code:

$config['base_url'] = 'http://127.0.0.1/CompanyGiondaCI'; 


views/addslideshows.php

PHP Code:

<legend>CodeIgniter File Upload Demo</legend><br>
        <?php echo form_open_multipart('uploadfile/upload');?>
        
        <label><b>PHOTO GALLERY 1</b></label><br><br>
        
        <fieldset>
            <div class="form-group">
                <div class="row">
                    <div class="col-md-12">
                        <label for="filename" class="control-label">Select File to Upload</label> 
                    </div>
                </div>
            </div>

            <div class="form-group">
                <div class="row">
                    <div class="col-md-12">
                        <input type="file" name="filename" size="20" />
                        <span class="text-danger"><?php if (isset($error)) { echo $error; } ?></span>
                    </div>
                </div>
            </div>

            <div class="form-group">
                <div class="row">
                    <div class="col-md-12">
                        <input type="submit" value="Upload File" class="btn btn-primary"/>
                    </div>
                </div>
            </div>
        </fieldset> 


controllers/Cuploadfile.php

PHP Code:

<?php



class uploadfile extends CI_Controller {

    function __construct()
    {
        parent::__construct();
        $this->load->helper(array('form', 'url'));
    }

    //index function
    function index()
    {
        //load file upload form
        $this->load->view('addslideshows');
    }

    //file upload function
    function upload()
    {
        //set preferences
        $config['upload_path'] = 'uploads/';
        $config['allowed_types'] = 'jpg|gif';
        $config['max_size']    = '500000';

        //load upload class library
        $this->load->library('upload', $config);

        if (!$this->upload->do_upload('filename'))
        {
            // case - failure
            $upload_error = array('error' => $this->upload->display_errors());
            $this->load->view('addslideshows', $upload_error);
        }
        else
        {
            // case - success
            $upload_data = $this->upload->data();
            $data['success_msg'] = '<div class="alert alert-success text-center">Your file <strong>' . $upload_data['file_name'] . '</strong> was successfully uploaded!</div>';
            $this->load->view('addslideshows', $data);
        }
    }
}


?>

" If I looks more intelligence please increase my reputation."