Method FirstAsync
| MongoDB CSharp Driver API Reference (original) (raw)
Namespace
Assembly
MongoDB.Driver.dll
FirstAsync(IQueryable, CancellationToken)
Returns the first element of a sequence.
public static Task<TSource> FirstAsync<TSource>(this IQueryable<TSource> source, CancellationToken cancellationToken = default)Parameters
source IQueryable
The IQueryable to return the first element of.
cancellationToken CancellationToken
The cancellation token.
Returns
The first element in source.
Type Parameters
TSource
The type of the elements of source.
FirstAsync(IQueryable, Expression<Func<TSource, bool>>, CancellationToken)
Returns the first element of a sequence that satisfies a specified condition.
public static Task<TSource> FirstAsync<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate, CancellationToken cancellationToken = default)Parameters
source IQueryable
An IQueryable to return an element from.
predicate Expression<Func<TSource, bool>>
A function to test each element for a condition.
cancellationToken CancellationToken
The cancellation token.
Returns
The first element in source that passes the test in predicate.
Type Parameters
TSource
The type of the elements of source.