Nullable type inference is not supported in this context

Value types and structures can be declared nullable.

Dim a? As Integer
Dim b As Integer?

However, you cannot use the nullable declaration in combination with type inference. The following examples cause this error.

' Not valid.
' Dim c? = 10
' Dim d? = a

Error ID: BC36629

To correct this error

• Use an As clause to declare the variable as nullable.

See Also

Concepts

Nullable Value Types

Local Type Inference