Chapter 16 Working with VB .NET
The following directives are supported during preprocessing:
| Directive | Description |
|---|---|
| #Const | Defines a symbol |
| #If | Evaluates a condition, if the condition is true, the statement following the condition is kept otherwise it is ignored |
| #Else | If the previous #If test fails, source code following the #Else directive will be included |
| #Else If | Used with the #if directive, if the previous #If test fails, #Else If includes or exclude source code, depending on the resulting value of its own expression or identifier |
| #End If | Closes the #If conditional block of code |
Note: #Region, #End Region, and #ExternalSource directives are removed from source code.
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