• Article

Contract.Assume Method (Boolean, String)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Instructs code analysis tools to assume that a condition is true, even if it cannot be statically proven to always be true, and displays a message if the assumption fails.

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

Syntax

'Declaration
<ConditionalAttribute("DEBUG")> _
<ConditionalAttribute("CONTRACTS_FULL")> _
Public Shared Sub Assume ( _
    condition As Boolean, _
    userMessage As String _
)

[ConditionalAttribute("DEBUG")]
[ConditionalAttribute("CONTRACTS_FULL")]
public static void Assume(
    bool condition,
    string userMessage
)

Parameters

  • condition
    Type: System.Boolean
    The conditional expression to assume true.
  • userMessage
    Type: System.String
    The message to post if the assumption fails.

Remarks

If userMessage is not a constant string literal, the contract may not be understood by tools.

At run time, using this method is equivalent to using the Assert(Boolean, String) method.

Version Information

Silverlight

Supported in: 5, 4

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.