C# 编程/关键字/as

as关键字将对象转换为不同的类型。因此，它类似于TypeA varA = (TypeA) varB语法。区别在于此关键字在对象类型不兼容时返回 null，而前一种方法在这种情况下会抛出类型转换异常。

另请参阅

• is

C# 关键字
abstract as base bool break byte case catch char checked class const continue decimal default delegate do double else enum event explicit extern false finally fixed float for foreach goto if implicit in int interface internal is lock long namespace new null object operator out override params private protected public readonly ref return sbyte sealed short sizeof stackalloc static string struct switch this throw true try typeof uint ulong unchecked unsafe ushort using var virtual void volatile while
C# 特殊标识符（上下文关键字）
add alias async await dynamic get global nameof partial remove set value when where yield
上下文关键字（用于查询）
ascending by descending equals from group in into join let on orderby select where