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


Determines whether a particular condition is valid for all integers in a specified range.

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

static member ForAll : 
        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 the existence of the integers in the specified range.

Return Value

Type: System.Boolean

true if predicate returns true for all integers 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.

The following example demonstrates how to use the ForAll method to determine whether an array has a null element.

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

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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