Contract.Requires<TException> Method (Boolean)
Specifies a precondition contract for the enclosing method or property, and throws an exception if the condition for the contract fails.
Assembly: mscorlib (in mscorlib.dll)
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(Boolean) method when you want to throw an exception if the precondition fails.
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