Gcnew null

Wednesday, July 15, PM. Can you show the exact line that throws the exception? While that's a bug in his code, he says he gets the exception inside InitializeComponent which is called earlier than this buggy block of code. So apparently he's got some other problems in his code too. The function InitializeComponent works fine at runtime. I just need to do some studying to try to understand it.

Thanks very much. IsDBNull index return null; return reader. GetNullableInt64 2 ;. Daniel Liuzzi Sergey Berezovskiy Sergey Berezovskiy k 35 35 gold badges silver badges bronze badges. V4Vendetta I fixed this typo before your first comment — Sergey Berezovskiy. GetInt64 2 : — V4Vendetta. V4Vendetta up there long? Show 1 more comment. GetInt64 2 ;. Daniel Liuzzi Daniel Liuzzi Sign up or log in Sign up using Google. Sign up using Facebook.

Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. The following code example demonstrates that the nullptr keyword can be used wherever a handle, native pointer, or function argument can be used.

And the example demonstrates that the nullptr keyword can be used to check a reference before it is used. The following code example shows that nullptr and zero can be used interchangeably on native pointers.

The following code example shows that nullptr is interpreted as a handle to any type or a native pointer to any type. In case of function overloading with handles to different types, an ambiguity error will be generated. The nullptr would have to be explicitly cast to a type. The following code example shows that casting nullptr is allowed and returns a pointer or handle to the cast type that contains the nullptr value.

The following code example shows that nullptr can be used as a function parameter. C Standards, Extensions, and Interop.

This forum covers all standardized languages, extensions, and interop technologies supported by Visual C. Sign in to vote.

Code Snippet. Friday, May 2, PM. Oops, didn't think of generic methods. C has almost identical syntax and constraint inheritance.