Gemstone Data Library
Show/Hide TOC

# TableOperations T QueryRecordAsync(RecordRestriction, CancellationToken) Method

Queries database and returns a single modeled table record for the specified restriction.

## Definition

Namespace: Gemstone.Data.Model
Assembly: Gemstone.Data (in Gemstone.Data.dll) Version: 1.0.152 -- Release Build+3b6829d9645b31d6fc0c4a03e68df9622cb42dfb
C#
View Source Request Example

    public ValueTask<T> QueryRecordAsync(
    	RecordRestriction? restriction,
    	CancellationToken cancellationToken
    )

VB
View Source Request Example

    Public Function QueryRecordAsync (
    	restriction As RecordRestriction,
    	cancellationToken As CancellationToken
    ) As ValueTask(Of T)

C++
View Source Request Example

    public:
    ValueTask<T> QueryRecordAsync(
    	RecordRestriction^ restriction,
    	CancellationToken cancellationToken
    )

JavaScript
View Source Request Example

    function QueryRecordAsync(restriction, cancellationToken);

#### Parameters

restriction RecordRestriction
  Record restriction to apply.
cancellationToken CancellationToken
  Propagates notification that operations should be canceled.

#### Return Value

ValueTask T
A single modeled table record for the queried record.

## Remarks

If no record is found for specified restriction, null will be returned.

This is a convenience call to QueryRecords(String, RecordRestriction, Int32) specifying the RecordRestriction parameter with a limit of 1 record.

If any of the restriction parameters reference a table field that is modeled with either an EncryptDataAttribute or FieldDataTypeAttribute, then the function GetInterpretedFieldValue(String, Object) will need to be called, replacing the target parameter with the returned value so that the field value will be properly set prior to executing the database function.

## See Also

#### Reference

TableOperationsT Class
QueryRecordAsync Overload
Gemstone.Data.Model Namespace