AssertExtensionAssertTSource Method (IEnumerableTSource, FuncTSource, Boolean) | 
 
            Asserts that all elements of a sequence meet a given condition
            otherwise throws an 
Exception object.
            
 
    Namespace: 
   MoreLinq.Extensions
    Assembly:
   MoreLinq (in MoreLinq.dll) Version: 3.2.0+5205ea241d72b079436060d330cd5c2eae7cdcdf
Syntaxpublic static IEnumerable<TSource> Assert<TSource>(
	this IEnumerable<TSource> source,
	Func<TSource, bool> predicate
)
<ExtensionAttribute>
Public Shared Function Assert(Of TSource) ( 
	source As IEnumerable(Of TSource),
	predicate As Func(Of TSource, Boolean)
) As IEnumerable(Of TSource)
public:
[ExtensionAttribute]
generic<typename TSource>
static IEnumerable<TSource>^ Assert(
	IEnumerable<TSource>^ source, 
	Func<TSource, bool>^ predicate
)
[<ExtensionAttribute>]
static member Assert : 
        source : IEnumerable<'TSource> * 
        predicate : Func<'TSource, bool> -> IEnumerable<'TSource> 
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| Exception | Condition | 
|---|
| InvalidOperationException | The 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