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Contract::Assert Method (Boolean, String)

Checks for a condition; if the condition is false, follows the escalation policy set by the analyzer and displays the specified message.

Namespace:  System.Diagnostics.Contracts
Assembly:  mscorlib (in mscorlib.dll)
[ConditionalAttribute(L"DEBUG")]
[ConditionalAttribute(L"CONTRACTS_FULL")]
public:
static void Assert(
	bool condition, 
	String^ userMessage
)

Parameters

condition
Type: System::Boolean

The conditional expression to test.

userMessage
Type: System::String

A message to display if the condition is not met.

The default escalation policy is to notify the attached debugger about a contract failure or to display an Assert dialog box if a debugger is not attached. Optionally, the analyzer can be instructed to throw an exception. The userMessage parameter is passed to the debugger output. If userMessage is not a constant string literal, tools may not be able to read it.

.NET Framework

Supported in: 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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