title: How to convert "string" to "timestamp without time zone"
body: <p>I am new to Postgresql and I am using WCF services.<br>
  Here is my code snippet:</p>
  
  <pre><code>$.ajax({
      url: '../Services/AuctionEntryServices.svc/InsertAuctionDetails',
      data: JSON.stringify({ "objAuctionEntryEntity": {
          "AuctionNO": '',          
          "AuctionDate": $('[Id$="lblAuctionDateVal"]').text(),
          "TraderID": $('[Id$="ddlTraderName"] option:selected').val(),
          "Grade": $('[Id$="ddlGrade"] option:selected').val(),
          "Varity": $('[Id$="ddlVarity"] option:selected').val(), 
          "QuntityInAuction": $('#txtQuantityForAuction').val(),
          "AuctionRate": $('#txtAuctionRate').val(),
          "BrokerID": a[0],
          "IsSold": $('#chlIsSold').is(':checked'),
          "CreatedBy": $.parseJSON(GetCookie('Admin_User_In_Mandi')).UserID,
          "UpdatedBy": $.parseJSON(GetCookie('Admin_User_In_Mandi')).UserID,
          "CreationDate": GetCurrentDate().toMSJSON(),
          "IsActive": true,
          "AuctionTransaction": arrAuctionTransaction,
          "MandiID": $.parseJSON(GetCookie('Admin_User_In_Mandi')).MandiID,
          "FarmerID": _ownerid,
          "AuctionNO": _auctionno,
          "AmmanatPattiID": _ammantpattiid,
          "ToTraderID": b[0],
          "ToTraderName": $('#txtOtherBuyerNameEN').val(),
          "ToTraderName_HI": $('#txtOtherBuyerNameHI').val()
      }
  }),
      type: 'POST',
      contentType: 'application/json',
      dataType: 'json'              
  });
  </code></pre>
  
  <p>Here:</p>
  
  <pre><code>$('[Id$="lblAuctionDateVal"]').text() = "20/8/2013 14:52:49" 
  </code></pre>
  
  <p>And my data type for this field is <code>timestamp without time zone</code>.<br>
  How to convert this string to <code>timestamp without time zone</code> data type?</p>