CardTerminalBase.IsCardPresent Method

Public Function IsCardPresent( _ 
   ByVal nSlot As Integer, _ 
   ByRef requiresRemoval As Boolean _ 
) As Boolean

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public bool IsCardPresent( 
   int nSlot, 
   ref bool requiresRemoval 
)

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public:  
bool IsCardPresent( 
   int nSlot, 
   bool& requiresRemoval 
) 

This language is not supported or no code example is available.

public function IsCardPresent( 
    nSlot : int, 
    requiresRemoval : boolean 
) : boolean;

This language is not supported or no code example is available.

Parameters

nSlot

Type: int

Slot number of card terminal slot of interest.

requiresRemoval

Type: bool

[in,out] Returns a flag telling the caller if the card must be removed by the user This is required for motorized readers.

Return Value

Returns true if a card is present in the indicated slot and false if not.

This implementation checks whether this object was disposed and throws an ObjectDisposedException if so. Also it checks whether the object was correctly initialized and throws a InvalidOperationException if not. Then the parameter nSlot is checked against m_nSlots and an ArgumentOutOfRangeException is thrown if the requested slot does not exist.

If the preconditions have been satisfied, then the abstract method InternalIsCardPresent is invoked.

.NET Framework

.NET Core

.NET Standard