与谓词非常相似的东西，但不是谓词(Something very similar to predicate, but not a predicate)

 我希望有一个“谓词”（它在引号中，因为我不知道正确的单词），它根据条件返回对象的不同字段。 我希望一个简短的例子可以说明。 
 
 Predicate<MyClass> predicate
 if (condition1)
    predicate = x => x.Field1;
 else if (condition2)
     predicate = x => x.Field2;
foreach(vat item in ListOfItems)
{
    predicate(item) = someValue;//Here I am changing the value of that field.
}

I want to have a "predicate" (it's in quotes, since I don't know the right word), that returns different fields of an object, based on conditions. I hope a short example will illustrate.
 
 Predicate<MyClass> predicate
 if (condition1)
    predicate = x => x.Field1;
 else if (condition2)
     predicate = x => x.Field2;
foreach(vat item in ListOfItems)
{
    predicate(item) = someValue;//Here I am changing the value of that field.
}

原文：https://stackoverflow.com/questions/19744023