Contract.Exists Method (Int32, Int32, Predicate<Int32>)


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Determines whether a specified test is true for any integer within a range of integers.

Namespace:   System.Diagnostics.Contracts
Assembly:  mscorlib (in mscorlib.dll)

public static bool Exists(
	int fromInclusive,
	int toExclusive,
	Predicate<int> predicate


Type: System.Int32

The first integer to pass to predicate.

Type: System.Int32

One more than the last integer to pass to predicate.

Type: System.Predicate<Int32>

The function to evaluate for any value of the integer in the specified range.

Return Value

Type: System.Boolean

true if predicate returns true for any integer starting from fromInclusive to toExclusive - 1.

Exception Condition

predicate is null.


toExclusive is less than fromInclusive.

The toExclusive parameter is one more than the last integer to facilitate using the length of a range of integers starting at 0. For example, it would be set to 5 for integers 0 through 4.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 4.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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