c# on error resume next

下图为我所写的代码,但是当我运行时,无论输入任何数字,没有返回error

onexceptionresumenext 和 onerrorresumenext 的区别是只捕获

mvp on visual c#

c# 数据为空,不能对null调用此方法或属性的解决办法

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