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MoreEnumerableAssertTSource Method (IEnumerableTSource, FuncTSource, Boolean)
Asserts that all elements of a sequence meet a given condition otherwise throws an Exception object.

Namespace: MoreLinq
Assembly: MoreLinq (in MoreLinq.dll) Version: 2.0.0
Syntax
public static IEnumerable<TSource> Assert<TSource>(
	this IEnumerable<TSource> source,
	Func<TSource, bool> predicate
)

Parameters

source
Type: System.Collections.GenericIEnumerableTSource
Source sequence.
predicate
Type: SystemFuncTSource, Boolean
Function that asserts an element of the source sequence for a condition.

Type Parameters

TSource
Type of elements in source sequence.

Return Value

Type: IEnumerableTSource
Returns the original sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
Exceptions
ExceptionCondition
InvalidOperationExceptionThe input sequence contains an element that does not meet the condition being asserted.
Remarks
This operator uses deferred execution and streams its results.
See Also