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Auto 

Specifies that Visual Basic should marshal strings according to .NET Framework rules based on the external name of the external procedure being declared.

When you call a procedure defined outside your project, the Visual Basic compiler does not have access to the information it needs to call the procedure correctly. This information includes where the procedure is located, how it is identified, its calling sequence and return type, and the string character set it uses. The Declare Statement creates a reference to an external procedure and supplies this necessary information.

The charsetmodifier part in the Declare statement supplies the character set information for marshaling strings during a call to the external procedure. It also affects how Visual Basic searches the external file for the external procedure name. The Auto modifier specifies that Visual Basic should marshal strings according to .NET Framework rules, and that it should determine the base character set of the run-time platform and possibly modify the external procedure name if the initial search fails. For more information, see "Character Sets" in Declare Statement.

If no character set modifier is specified, Ansi is the default.

The Auto modifier can be used in this context:

Declare Statement

This keyword is not supported.

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