如何在ci中使用form_validation中所需的？

Hi when I use required in my rules in ci form_validation, I know the value of this required input post and don't show any message .but this if ($this->form_validation->run()) is always false.

thanks for your help.

my view:

   <form>
    <div class="row">
       <div class="form-group">
            <div class="col-md-2"><label>Name</label></div>
                <div class="col-md-10 col-md-pull-1">
                    <input name="Name" class="form-control" id="Name"
                    value="<?php echo set_value('Name')?>"
                    autocomplete="off"></input> 
                    <?php echo form_error('Name'); ?>
              </div>
     </div>
   </div>
</form>

my controller:

public function show_info()
{
    $this->load->library('form_validation');
    $this->form_validation->set_rules('Name', 'Name', 'required');
    $this->form_validation->set_message('required'," please enter %s");
    if ($this->form_validation->run()== FALSE)
    {
       echo "false";
    }
    else redirect();
}

In your view file, you had wrote nmae except name

 <div class="row">
       <div class="form-group">
            <div class="col-md-2"><label>Name</label></div>
                <div class="col-md-10 col-md-pull-1">
                    <input name="Name" class="form-control" id="Name"
                    value="<?php echo set_value('Name')?>"
                    autocomplete="off"></input> 
                    <?php echo form_error('Name'); ?>
              </div>
     </div>
   </div>

correct it.

please load again view file after false form_validation

public function show_info()
{
    $this->load->library('form_validation');
    $this->form_validation->set_rules('Name', 'Name', 'required');
    $this->form_validation->set_message('required'," please enter %s");
    if ($this->form_validation->run()== FALSE)
    {
       echo "false";
       $this->load->view('view_file','',true);    
    }
    else redirect();
}