title: Jqgrid, call URL with parameters for Json return
body: <p>i have the following code on my aspx page:</p>
  
  <pre><code>jQuery("#listFondos").jqGrid({
      url: '/PorMyController/LoadGridData/',
      datatype: 'json',
      mtype: 'GET',
      colNames: ['col1', 'col2',...etc
  </code></pre>
  
  <p>Everything is working fine, but i'm wondering if is it possible to call the URL method sending some parameters. I know that by default, when you call the url method, jqgrid sends some parameters to control paging of the grid:</p>
  
  <pre><code>public ActionResult LoadGridData(string sidx, string sord, int page, int rows)
  </code></pre>
  
  <p>So, i want to add an extra parameter to make some filter on the data that is going to be loaded into the grid. For example i would like to have this:</p>
  
  <pre><code>public ActionResult LoadGridData(string sidx, string sord, int page, int rows, string filterId)
  </code></pre>
  
  <p>As i know, i don't need to specify the first 3 parameters, cause jqgrid does it by default, but how do i send the filterId parameter? </p>