Type t = typeof(int?); //will get this dynamically
object val = 5; //will get this dynamically
object nVal = Convert.ChangeType(val, t);//getting exception here
Type t = typeof(int?); //will get this dynamica
阅读背景：
无效的演员”系统。Int32”到“System.Nullable ' 1[[系统。Int32,mscorlib]]
来源：互联网
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