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Contract.EnsuresOnThrow(TException) Method (Boolean)

Specifies a postcondition contract for the enclosing method or property, based on the provided exception and condition.

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

[<ConditionalAttribute("CONTRACTS_FULL")>]
static member EnsuresOnThrow : 
        condition:bool -> unit   when 'TException : Exception

Type Parameters

TException

The type of exception that invokes the postcondition check.

Parameters

condition
Type: System.Boolean

The conditional expression to test.

The condition parameter specifies a postcondition that is expected to be true when the enclosing method or property terminates abnormally and an exception of type TException is thrown.

  • This method call must be at the beginning of a method or property, before any other code.

  • This contract is exposed to clients; therefore, it must only reference members that are at least as visible as the enclosing method.

  • You must use the binary rewriter for run-time enforcement of this postcondition.

.NET Framework

Supported in: 4.5.2, 4.5.1, 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 8, Silverlight 8.1

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.

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