Hello
In my gridview "GridViewAuthors" there is user control "Booklist".But it has problem for data binding. And always receive this error "Value cannot be null.
Parameter name: outer"
Please help why the properties of my user control will not be filling by data.
for test i filled the properties of user control directly by below code and it was working
"// IEnumerable<Book> _Books = _DataContext.GetTable<Book>();
// IEnumerable<BookAuthor> BookAuthor = _DataContext.GetTable<BookAuthor>();
Authors.aspx.cs
namespace LinqBooks.Web
{
public partial class Authors : System.Web.UI.Page
{
class AuthorPresentationModel
{
public Guid ID { get; set; }
public String FullName { get; set; }
public IEnumerable<Book> Books { get; set; }
public IEnumerable<BookAuthor> ...
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