Queryable::SkipWhile<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Int32, Boolean>^>^)


Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

generic<typename TSource>
static IQueryable<TSource>^ SkipWhile(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, int, bool>^>^ predicate


Type: System.Linq::IQueryable<TSource>^

An IQueryable<T> to return elements from.

Type: System.Linq.Expressions::Expression<Func<TSource, Int32, Boolean>^>^

A function to test each element for a condition; the second parameter of this function represents the index of the source element.

Return Value

Type: System.Linq::IQueryable<TSource>^

An IQueryable<T> that contains elements from source starting at the first element in the linear series that does not pass the test specified by predicate.

Type Parameters


The type of the elements of source.

Exception Condition

source or predicate is null.

This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T, TResult> types. For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

The SkipWhile<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Int32, Boolean>^>^) method generates a MethodCallExpression that represents calling SkipWhile<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Int32, Boolean>^>^) itself as a constructed generic method. It then passes the MethodCallExpression to the CreateQuery(Expression^) method of the IQueryProvider represented by the Provider property of the source parameter.

The query behavior that occurs as a result of executing an expression tree that represents calling SkipWhile<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Int32, Boolean>^>^) depends on the implementation of the type of the source parameter. The expected behavior is that it applies predicate to each element in source until it finds an element for which predicate returns false. That element and all the remaining elements are returned. The index of each source element is provided as the second argument to predicate.

The following code example demonstrates how to use SkipWhile<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Int32, Boolean>^>^) to skip elements of an array as long as a condition that depends on the element's index is true.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.1
Windows Phone
Available since 8.1
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