SqlSet<TResult>.Single Method (String, Object[])
Returns the only element of the set that satisfies a specified condition, and throws an exception if more than one such element exists.
Namespace: DbExtensions
Assembly: DbExtensions.dll
Syntax
public TResult Single(
string predicate,
params Object[] parameters
)
Parameters
predicate
Type: System.String
A SQL expression to test each row for a condition.
parameters
Type: System.Object[]
The parameters to apply to the predicate.
Return Value
Type: TResult
The single element of the set that passes the test in the specified predicate.
Exceptions
| Exception | Condition |
|---|---|
| InvalidOperationException | No element satisfies the condition in predicate.-or-More than one element satisfies the condition in predicate.-or-The set is empty. |