XPQueryExtensions.SingleAsync<T>(IQueryable<T>, Expression<Func<T, Boolean>>, CancellationToken) Method
Asynchronously gets the object from a selection if only one object in the selection meets the specified requirements. Otherwise, throws an exception.
Namespace: DevExpress.Xpo
Assembly: DevExpress.Xpo.v24.2.dll
NuGet Package: DevExpress.Xpo
#Declaration
public static Task<T> SingleAsync<T>(
this IQueryable<T> query,
Expression<Func<T, bool>> predicate,
CancellationToken cancellationToken = default(CancellationToken)
)
#Parameters
Name | Type | Description |
---|---|---|
query | IQueryable<T> | An XPQuery |
predicate | Expression<Func<T, Boolean>> | An expression which determines requirements the persistent object needs to meet. |
#Optional Parameters
Name | Type | Default | Description |
---|---|---|---|
cancellation |
Cancellation |
null | A Cancellation |
#Type Parameters
Name |
---|
T |
#Returns
Type | Description |
---|---|
Task<T> | A Task that returns one object if this is the only object in a selection to meet the specified requirements. |
See Also