{"action":"opened","issue":{"url":"https://api.github.com/repos/keenlabs/keen-sdk-net/issues/23","labels_url":"https://api.github.com/repos/keenlabs/keen-sdk-net/issues/23/labels{/name}","comments_url":"https://api.github.com/repos/keenlabs/keen-sdk-net/issues/23/comments","events_url":"https://api.github.com/repos/keenlabs/keen-sdk-net/issues/23/events","html_url":"https://github.com/keenlabs/keen-sdk-net/issues/23","id":123368437,"number":23,"title":"QueryFilter.FilterOperator.Equals() with null value","user":{"login":"dietert","id":6254001,"avatar_url":"https://avatars.githubusercontent.com/u/6254001?v=3","gravatar_id":"","url":"https://api.github.com/users/dietert","html_url":"https://github.com/dietert","followers_url":"https://api.github.com/users/dietert/followers","following_url":"https://api.github.com/users/dietert/following{/other_user}","gists_url":"https://api.github.com/users/dietert/gists{/gist_id}","starred_url":"https://api.github.com/users/dietert/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dietert/subscriptions","organizations_url":"https://api.github.com/users/dietert/orgs","repos_url":"https://api.github.com/users/dietert/repos","events_url":"https://api.github.com/users/dietert/events{/privacy}","received_events_url":"https://api.github.com/users/dietert/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-12-21T22:04:39Z","updated_at":"2015-12-21T22:04:39Z","closed_at":null,"body":"Hi,\r\n\r\nI want to check if a property is null.\r\n\r\nI'll do this with the following code\r\n```\r\nnew QueryFilter(\"propertyname\", QueryFilter.FilterOperator.Equals(), null)\r\n```\r\n\r\nBut it throws an ArgumentNullException\r\n\r\nShould I build my filter different? Or is my code correct and shouldn't the library throwing the ArgumentNullException?\r\n\r\nThanks for your answer!\r\n\r\nRegards,\r\nDieter"}}