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POSilverlight 4 RIA service issue
 

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    <p>Hi I have created a sample database application in Silverlight by following a tutorial. I am trying to insert a record in DB but it throws an error <strong>Submit operation failed validation. Please inspect Entity.ValidationErrors for each entity in EntitiesInError for more information</strong>. I am using Entity framework for DAL. My code is given below. Exception occure when I insert a record. But Iam not sure at which stage exception occurs. RecordInsertPage.cs file</p> <pre><code>public partial class BookRegistaeration : ChildWindow { public Book newBook { get; set; } public BookRegistaeration() { InitializeComponent(); newBook = new Book(); AddBookForm.CurrentItem =AddBookForm; AddBookForm.BeginEdit(); } private void OKButton_Click(object sender, RoutedEventArgs e) { AddBookForm.CommitEdit(); this.DialogResult = true; } private void CancelButton_Click(object sender, RoutedEventArgs e) { newBook = null; AddBookForm.CancelEdit(); this.DialogResult = false; } } </code></pre> <p>Service.cs Page</p> <pre><code>public class OrganizationService : LinqToEntitiesDomainService&lt;LibraryEntities1&gt; { public IQueryable&lt;Book&gt; GetBooks() { return this.ObjectContext.Books.OrderBy(e =&gt; e.BookId); } public void InsertBook(Book book) { //book.Title = "Hello book"; //book.Author = "Ali"; //book.Category = "Humanity"; if ((book.EntityState != EntityState.Detached)) { this.ObjectContext.ObjectStateManager.ChangeObjectState(book, EntityState.Added); } else { this.ObjectContext.Books.AddObject(book); } } public void UpdateBook(Book currentBook) { this.ObjectContext.Books.AttachAsModified(currentBook, this.ChangeSet.GetOriginal(currentBook)); } public void DeleteBook(Book book) { if ((book.EntityState != EntityState.Detached)) { this.ObjectContext.ObjectStateManager.ChangeObjectState(book, EntityState.Deleted); } else { this.ObjectContext.Books.Attach(book); this.ObjectContext.Books.DeleteObject(book); } } } private void LibraryDataSource_SubmittedChanges(object sender, SubmittedChangesEventArgs e) { if (e.HasError) { MessageBox.Show(string.Format("Changes were not saved: {0}", e.Error.Message)); e.MarkErrorAsHandled(); } submitButton.IsEnabled = true; } void addBook_Closed(object sender, EventArgs e) { BookRegistaeration book = (BookRegistaeration)sender; if (book.newBook != null) { OrganizationContext _OrganizationContext = (OrganizationContext)(LibraryDataSource.DomainContext); _OrganizationContext.Books.Add(book.newBook); LibraryDataSource.SubmitChanges(); } } </code></pre>
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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