Extension method: T FirstOrDefault<T>(this IQueryable<T>, Expression<Func<T, bool>>, T)

• Declared in: RT.Util.ExtensionMethods.IQueryableExtensions

Declaration

public static T FirstOrDefault<T>(
    this IQueryable<T> source,
    Expression<Func<T, bool>> predicate,
    T default
)

Summary

Returns the first element of a sequence, or a default value if the sequence contains no elements.

Generic type parameters

T	The type of the elements of source.

Parameters

this IQueryable<T>	source	The collection to return the first element of.
Expression<Func<T, bool>>	predicate	A function to test each element for a condition.
T	default	The default value to return if the sequence contains no elements.

Returns

default if source is empty or if no element passes the test specified by predicate; otherwise, the first element in source that passes the test specified by predicate.