title: Timestamp query in Azure
body: <p>I am really stuck in my query filter on Azure table storage.
  May I know how to query with timestamp please?
  When I query for partition key to 1005 alone, I am getting the complete table which I don't want.
  When I added "and" condition with timestamp (tried with lots of formats but it is not returning anything. Code snippet below :</p>
  
  <pre><code>var lowerlimit = DateTime.Today.AddDays(-52).ToString("yyyy-MM-dd");
  
  string dateRangeFilter = TableQuery.CombineFilters(
      TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.Equal, "1005"),
      TableOperators.And,
      TableQuery.GenerateFilterCondition("TimeStamp", QueryComparisons.GreaterThanOrEqual, lowerlimit));
  </code></pre>