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.

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