{"id":7685,"date":"2023-04-17T14:23:00","date_gmt":"2023-04-17T13:23:00","guid":{"rendered":"https:\/\/solidt.eu\/site\/?p=7685"},"modified":"2023-05-17T12:58:45","modified_gmt":"2023-05-17T11:58:45","slug":"devexpress-xaf-xpo-custom-validation","status":"publish","type":"post","link":"https:\/\/solidt.eu\/site\/devexpress-xaf-xpo-custom-validation\/","title":{"rendered":"DevExpress XAF \/ XPO Custom Validation"},"content":{"rendered":"\n<p>The trick is to use an extra property, decorate it with [Browsable(false)] and [RuleFromBoolProperty]<\/p>\n\n\n\n<div style=\"height: 250px; position:relative; margin-bottom: 50px;\" class=\"wp-block-simple-code-block-ace\"><pre class=\"wp-block-simple-code-block-ace\" style=\"position:absolute;top:0;right:0;bottom:0;left:0\" data-mode=\"csharp\" data-theme=\"monokai\" data-fontsize=\"14\" data-lines=\"Infinity\" data-showlines=\"true\" data-copy=\"false\">[NonPersistent]\n[ModelDefault(\"DisplayFormat\", \"{0:g}\")]\n[ModelDefault(\"EditMask\", \"g\")]\n[ModelDefault(\"Caption\", \"Start\")]\n[RuleRequiredField(\"KlantMelding.Start.Required\", DefaultContexts.Save, \"Voer de start\/aanvangstijd in\")]\n[VisibleInDetailView(false)]\npublic DateTime Start\n{\n    get => _startdatum + _starttijd;\n    set\n    {\n        StartDatum = value.Date;\n        StartTijd = value.TimeOfDay;\n    }\n}\n\n[Browsable(false)]\n[RuleFromBoolProperty(\"Storing.StartTimeValid\", DefaultContexts.Save, \"De start\/aanvangstijd moet in het verleden liggen\")]\npublic bool StartTimeValid => Start &lt; DateTime.Now;\n\n\/\/ 2nd example:\n\n[Association(\"KlantMelding-Klant\")]\n[ModelDefault(\"Caption\", \"Klanten\")]\n[DataSourceProperty(\"BeschikbareKlanten\")]\n[DataSourceCriteria(\"DebiteurStatus != 7 &amp;&amp; !IsNull(Relatie)\")]\npublic XPCollection&lt;Klant> Klanten => GetCollection&lt;Klant>(nameof(Klanten));\n\n\n[Browsable(false)]\n[RuleFromBoolProperty(\"KlantMelding.Klanten.Required\", DefaultContexts.Save, \"Er moet minimaal 1 klant worden geselecteerd\")]\npublic bool KlantenValid => Klanten.Count() > 0;\n\n\n<\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The trick is to use an extra property, decorate it with [Browsable(false)] and [RuleFromBoolProperty]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7685","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/7685","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/comments?post=7685"}],"version-history":[{"count":2,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/7685\/revisions"}],"predecessor-version":[{"id":7815,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/7685\/revisions\/7815"}],"wp:attachment":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/media?parent=7685"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/categories?post=7685"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/tags?post=7685"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}