{"action":"opened","issue":{"url":"https://api.github.com/repos/MahApps/MahApps.Metro/issues/2136","labels_url":"https://api.github.com/repos/MahApps/MahApps.Metro/issues/2136/labels{/name}","comments_url":"https://api.github.com/repos/MahApps/MahApps.Metro/issues/2136/comments","events_url":"https://api.github.com/repos/MahApps/MahApps.Metro/issues/2136/events","html_url":"https://github.com/MahApps/MahApps.Metro/issues/2136","id":107199274,"number":2136,"title":"DataGridNumericUpDownColumn null value","user":{"login":"GAMP","id":4171664,"avatar_url":"https://avatars.githubusercontent.com/u/4171664?v=3","gravatar_id":"","url":"https://api.github.com/users/GAMP","html_url":"https://github.com/GAMP","followers_url":"https://api.github.com/users/GAMP/followers","following_url":"https://api.github.com/users/GAMP/following{/other_user}","gists_url":"https://api.github.com/users/GAMP/gists{/gist_id}","starred_url":"https://api.github.com/users/GAMP/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/GAMP/subscriptions","organizations_url":"https://api.github.com/users/GAMP/orgs","repos_url":"https://api.github.com/users/GAMP/repos","events_url":"https://api.github.com/users/GAMP/events{/privacy}","received_events_url":"https://api.github.com/users/GAMP/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-09-18T13:09:01Z","updated_at":"2015-09-18T13:09:01Z","closed_at":null,"body":"DataGridNumericUpDownColumn seem not to support null values.\r\nDue to that its also impossible to have TextBoxHelper.Watermark set if value equals to null."}}