NGWS SDK Documentation  

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10.8 Late binding expressions

When the target of a member access expression, invocation expression or index expression is of type Object, the processing of the expression may be deferred until runtime. This deferral is called "late binding," and it allows Object variables to be used in a "typeless" way, where all binding of members is based on the actual runtime type of the value in the variable. If strict semantics are specified by the compilation environment or Option Strict, then late binding causes an error. Note that, unlike the early bound case, invoking or accessing a shared member late bound will cause the invocation target to be evaluated at runtime.