'Declaration
 
Public Overloads Overrides NotOverridable Function ReadAsync( _
   ByVal cancellationToken As CancellationToken _
) As Task(Of Boolean)

'Usage
 
Dim instance As TdDataReader
Dim cancellationToken As CancellationToken
Dim value As Task(Of Boolean)
 
value = instance.ReadAsync(cancellationToken)

public override Task<bool> ReadAsync( 
   CancellationToken cancellationToken
)

public:
Task<bool>^ ReadAsync( 
   CancellationToken cancellationToken
) override 

Parameters

cancellationToken

A Threading.CancellationToken used to indicate that the asynchronous operation should be canceled.

Return Value

TdDataReader is conceptually a static forward-only cursor. ReadAsync method advances the current position by one record. When data reader is first created, or when the NextResult method is called, the current position is set prior to the first record. Therefore, you must call the ReadAsync method to get access to the first record and subsequent records. This maintains consistent semantics throughout the interface at all times.

If you cancel this function it will leave the Data Reader in an invalid state. Only Dispose() should be called after cancelling this function.

If this function generates a runtime exception that exception will be wrapped within a AggregateException within the returned Task:

Target Platforms: Windows 7, Windows 8, Windows 8.1, Windows 10, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2

Reference

TdDataReader Class
TdDataReader Members
Overload List