检查PropertyInfo.SetValue是否会抛出ArgumentException

我继承了一些试图设置属性的代码:

object target = ...    // some instance on which we want to set a property
object value = ...     // some value - in this case, a string
var propertyInfo = ... // some property of target - in this case, not a string

try
{
    propertyInfo.SetValue(obj, value, null);
}
catch (ArgumentException)
{
    // We go off and look for our own way of converting between
    // the type of value and the type of the property.
}

在当前使用中,异常被捕获并抛出很多,所以我想首先进行检查:

if (propertyInfo.PropertyType.IsAssignableFrom(value.GetType())
{
    // Try/catch as above
}
else
{
    // Do the manual conversion as if the exception had been thrown.
}

这运行得更快.但是,我唯一担心的是,对于某些实际上会成功的类型,IsAssignableFrom可能会返回.(这会导致我们在不需要时查找手动转换,并且可能无法完全设置值.)falseSetValue

规格SetValue说

value无法转换为PropertyType的类型

这与可分配性不完全相同.

(如果在失败的情况下IsAssignableFrom返回,那很好 - 手动转换仍然会发生.)trueSetValue

有人可以向我确认这是否可行？