{"record":{"id":"dc2c6572009a47ad","repo":"dotnet/wpf","slug":"sr-format-sr-membernotallowedforview-commitnew","errorCode":null,"errorMessage":"SR.Format(SR.MemberNotAllowedForView, \"CommitNew\")","messagePattern":"SR\\.Format\\(SR\\.MemberNotAllowedForView, \"CommitNew\"\\)","errorType":"exception","errorClass":"InvalidOperationException","httpStatus":null,"severity":"error","filePath":"src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/Controls/ItemCollection.cs","lineNumber":945,"sourceCode":"            }\n        }\n\n\n        /// <summary>\n        /// Complete the transaction started by <seealso cref=\"IEditableCollectionView.AddNew\"/>.  The new\n        /// item remains in the collection, and the view's sort, filter, and grouping\n        /// specifications (if any) are applied to the new item.\n        /// </summary>\n        void    IEditableCollectionView.CommitNew()\n        {\n            IEditableCollectionView ecv = _collectionView as IEditableCollectionView;\n            if (ecv != null)\n            {\n                ecv.CommitNew();\n            }\n            else\n            {\n                throw new InvalidOperationException(SR.Format(SR.MemberNotAllowedForView, \"CommitNew\"));\n            }\n        }\n\n        /// <summary>\n        /// Complete the transaction started by <seealso cref=\"IEditableCollectionView.AddNew\"/>.  The new\n        /// item is removed from the collection.\n        /// </summary>\n        void    IEditableCollectionView.CancelNew()\n        {\n            IEditableCollectionView ecv = _collectionView as IEditableCollectionView;\n            if (ecv != null)\n            {\n                ecv.CancelNew();\n            }\n            else\n            {\n                throw new InvalidOperationException(SR.Format(SR.MemberNotAllowedForView, \"CancelNew\"));\n            }","sourceCodeStart":927,"sourceCodeEnd":963,"githubUrl":"https://github.com/dotnet/wpf/blob/81131a70a4c573cd62748a5c36908fc4d662daa9/src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/Controls/ItemCollection.cs#L927-L963","documentation":"ItemCollection.CommitNew throws InvalidOperationException(SR.MemberNotAllowedForView, \"CommitNew\") when the view does not implement IEditableCollectionView, meaning there is no pending AddNew transaction machinery to commit. It is a forwarding wrapper that requires editing-capable views.","triggerScenarios":"Calling items.CommitNew() when ItemsSource's view is not an IEditableCollectionView.","commonSituations":"Pairing CommitNew/CancelNew UI logic with a data source whose view doesn't support editing; rebinding ItemsSource mid-transaction to an incompatible collection.","solutions":["Bind ItemsSource to an editing-capable collection (view implements IEditableCollectionView).","Guard with `items.CanCommitNew` before calling CommitNew.","Ensure the same view stays attached across the AddNew..CommitNew transaction."],"exampleFix":"// before\nitems.CommitNew();\n// after\nif (items.CanCommitNew)\n    items.CommitNew();","handlingStrategy":"validation","validationCode":"if (items.CanCommitNew)\n    items.CommitNew();","typeGuard":"static bool CanCommit(ItemCollection c) => c.CollectionView is IEditableCollectionView;","tryCatchPattern":"try { items.CommitNew(); }\ncatch (InvalidOperationException) { /* add transaction not supported; handle manually */ }","preventionTips":["Check CanCommitNew before CommitNew","Ensure ItemsSource is not rebound between AddNew and CommitNew","Use editable view sources for transactional add workflows"],"tags":["wpf","itemcollection","invalidoperationexception","commitnew"],"backgroundTag":"unsupported-operation","analyzedSha":"81131a70a4c573cd62748a5c36908fc4d662daa9","analyzedAt":"2026-09-14T10:12:48.479Z","contentChangedAt":"2026-09-14T10:12:48.479Z","schemaVersion":2},"datasetVersion":"2026-09-21T21:30:21.729Z"}