Export (0) Print
Expand All

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

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

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

static member Exists : 
        fromInclusive:int * 
        toExclusive:int * 
        predicate:Predicate<int> -> bool


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.


predicate is a null reference (Nothing in Visual Basic).


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.

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

© 2014 Microsoft