title: Value cannot be null. Parameter name: String
body: <p>Please take a look at the following code. It's in <code>handler.asxh</code>.</p>
  
  <pre class="lang-cs prettyprint-override"><code>public void ProcessRequest(HttpContext context)
  {
      context.Response.ContentType = "application/json";
      new RequestManagementFacade().PinRequest(Int32.Parse(context.Request.QueryString["requestId"]), (Boolean.Parse(context.Request.QueryString["isPinned"])));
  }
  </code></pre>
  
  <p>This is showing the following error:</p>
  
  <pre class="lang-sh prettyprint-override"><code>Value cannot be null. Parameter name: String
  </code></pre>
  
  <p>There is value being passed as I have checked the context request query string, however, the code breaks at this stage.</p>
  
  <p>This handler will connect to the business logic layer.</p>