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("CONTRACTS_FULL")]
[ConditionalAttribute("DEBUG")]
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

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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