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Contract.Requires Method (Boolean)

.NET Framework 4.5

Specifies a precondition contract for the enclosing method or property.

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

[ConditionalAttribute("CONTRACTS_FULL")]
public static void Requires(
	bool condition
)

Parameters

condition: Type: System.Boolean
The conditional expression to test.

Remarks

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.
Use this method instead of the Contract.Requires<TException>(Boolean) method when backward compatibility does not force you to throw a particular exception.

Version Information

.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

Platforms

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.

Reference

Contract Class

Requires Overload

System.Diagnostics.Contracts Namespace

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