C# mscorlib.ni.dll 中发生“System.InvalidOperationException”类型的异常但未处理
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Exception of type 'System.InvalidOperationException' occurred in mscorlib.ni.dll but was not handled
提问by mogren3000
I am getting this message:
我收到这条消息：
"Exception of type 'System.InvalidOperationException' occurred in mscorlib.ni.dll but was not handled in user code"
“ mscorlib.ni.dll 中发生了“System.InvalidOperationException”类型的异常，但未在用户代码中处理“
This problem occurs when my TimePicker dont have any time choosen when I leave it empty.
当我将 TimePicker 留空时没有选择任何时间时，就会出现此问题。
My code for the TimePicker looks like this;
我的 TimePicker 代码如下所示；
DateTime break1S = (DateTime)startBreak1.Value;
Its on this row i am getting the message but if i set a time for the picker i dont get an message.
在这一行，我收到了消息，但如果我为选择器设置了时间，我就不会收到消息。
Any ideas?
有任何想法吗？
**
**
采纳答案by Rapha?l Althaus
If startBreak1.Valueis a string :
如果startBreak1.Value是字符串：
if (startBreak1!= null)
DateTime.TryParse(startBreak1.Value, out break1S);
if it's a Nullable<DateTime>(and I think it is)
如果是Nullable<DateTime>（我认为是）
DateTime break1S = startBreak1.HasValue
? startBreak1.Value
: new DateTime()//or anything you want;
or accept that break1Scan be nullable :
或接受break1S可以为空：
var break1S = startBreak1;
回答by mogren3000
The solution look like this:?
解决方案如下：？
DateTime break1S = startBreak1.Value.HasValue ? startBreak1.Value.Value : DateTime.MinValue;
回答by user2470005
you can try this:
你可以试试这个：
DateTime break1S = startBreak1.Value.HasValue ? startBreak1.Value.Value : DateTime.MinValue;
