title: Regular Expression For URL after button click
body: <p>I have scenario where i want to validate some malicious script. I want that whenever the URL gets something which  starts like <code>&lt;~script&gt;</code> Then it should redirect to Error page. </p>
  
  <p>Search code:-</p>
  
  <pre><code>dv.RowFilter = "Description LIKE ('%" + Request.QueryString["tx"].Trim().ToLower() + "%') or Title LIKE ('%" + Request.QueryString["tx"].Trim().ToLower() + "%')";
      dv.Sort = "Title ASC";
      dgrdPages.DataSource = dv;
      dgrdPages.DataBind();
      lblSearchWords.Text = Request.QueryString["tx"].ToString();
      lblFilesFound.Text = dv.Count.ToString();
  </code></pre>