title: How to set value to textbox in custom grid in magento admin?
body: <p>I add a custom textbox in a column. but i am not able to fetch its value.<img src="https://i.stack.imgur.com/Zzz2Y.jpg" alt="here i attach what i did"> </p>
  
  <p>I did some this type of coding to show textbox. But the problem is how can i set value for textbox.</p>
  
  <pre><code>    $html = '&lt;input type="text" ';
      $html .= 'name="' . $this-&gt;getColumn()-&gt;getId() . '" ';
      $html .= 'id="' . $this-&gt;getColumn()-&gt;getId() . '" ';
      $html .= 'value=""';
      $html .= 'class="input-text ' . $this-&gt;getColumn()-&gt;getInlineCss() . '"/&gt;';
  </code></pre>