SqlCommand.ExecuteScalarAsync(CancellationToken) Method
Definition
Important
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An asynchronous version of ExecuteScalar(), which executes the query asynchronously and returns the first column of the first row in the result set returned by the query. Additional columns or rows are ignored.
The cancellation token can be used to request that the operation be abandoned before the command timeout elapses. Exceptions will be reported via the returned Task object.
public:
override System::Threading::Tasks::Task<System::Object ^> ^ ExecuteScalarAsync(System::Threading::CancellationToken cancellationToken);public override System.Threading.Tasks.Task<object> ExecuteScalarAsync(System.Threading.CancellationToken cancellationToken);override this.ExecuteScalarAsync : System.Threading.CancellationToken -> System.Threading.Tasks.Task<obj>Public Overrides Function ExecuteScalarAsync (cancellationToken As CancellationToken) As Task(Of Object)Parameters
- cancellationToken
- CancellationToken
The cancellation instruction.
Returns
A task representing the asynchronous operation.
Exceptions
A SqlDbType other than Binary or VarBinary was used when Value was set to Stream. For more information about streaming, see SqlClient Streaming Support.
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