title: QueryExtender with dropdown list
body: <p>i am using QueryExtender with dropdownlist to filter gridview ( datasource : EntityDataSource).</p>
  
  <pre><code>  &lt;asp:SearchExpression SearchType="StartsWith" DataFields="Status" &gt;
      &lt;asp:ControlParameter ControlID="ddlStatus" Type="String"   /&gt;
    &lt;/asp:SearchExpression&gt;
  </code></pre>
  
  <p>Where i bind my ddlStatus from database with default value : "Select"
  But when i run project it takes by default value "Select" for Field "status" and gives empty grid.
  But on Pageload i want to show all the records after user can select different status from dropdownlist and based on that filter should work.</p>
  
  <p>how can we show all the data with dropdownlist value selected as default "select"</p>