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DbCommand::ExecuteScalarAsync Method

.NET Framework 4.5

An asynchronous version of ExecuteScalar, which executes the query and returns the first column of the first row in the result set returned by the query. All other columns and rows are ignored.

Invokes ExecuteScalarAsync with CancellationToken.None.

Namespace:  System.Data.Common
Assembly:  System.Data (in System.Data.dll)
public:
Task<Object^>^ ExecuteScalarAsync()

Return Value

Type: System.Threading.Tasks::Task<Object>
A task representing the asynchronous operation.
ExceptionCondition
DbException

An error occurred while executing the command text.

For more information about asynchronous programming, see Asynchronous Programming.

.NET Framework

Supported in: 4.5.1, 4.5

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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