How to query on attribute value "not null" with querybyattribute ?

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  Hi,
  I'm using QueryByAttribute and I need to check that the attribute "id" is not null.
  allcontacts.Attributes = new string[] { "id" };
  allcontacts.Values = new object[] { XXXX };
  I need to replace XXXX with an expression to indicate Not Null value.

  Can you please help me with that ?

  Thanks

  M

  EDIT:
  I'm doing this because i need to retrieve all the contacts i have in my crm using QueryByAttribute, without adding an attribute, I'm receiving an error that the query attribute array cannot be empty. So I'm adding a dummy attribute just to have an attribute check.

  • Edited by SB User Wednesday, January 15, 2014 1:34 PM Clarification

  Wednesday, January 15, 2014 1:31 PM