title: slash character ignored when send query string for asp.net
body: <pre><code>ResponseHelper.Redirect("popup.aspx?file= "+ LogicLayer.ManualPath + _ddlPLCs.SelectedValue.ToString() + "\\" + _PLCRow[0][0].ToString() ,"_page", "menubar=0,width=100,height=100");
  </code></pre>
  
  <p>in the second page :</p>
  
  <pre><code>if (Request.QueryString["file"] != null)
          {
              LogicLayer.viewManual(Request.QueryString["file"].ToString());
          }
  </code></pre>
  
  <p>i found that slash <code>(\)</code> characters is removed from the file path</p>
  
  <p>are there any idea ???</p>