我有一个ASP.NET应用程序.一切都很好,但是最近我收到了本身为空的异常:
try
{
// do something
}
catch (Exception ex)
{
Logger.Log("Error while tried to do something. Error: " + ex.Message);
}
有时ex
本身就是null
!
有什么 idea 吗?
我有一个ASP.NET应用程序.一切都很好,但是最近我收到了本身为空的异常:
try
{
// do something
}
catch (Exception ex)
{
Logger.Log("Error while tried to do something. Error: " + ex.Message);
}
有时ex
本身就是null
!
有什么 idea 吗?
对于在这里结束的任何人,我已经找到了一个可以实现这一点的实例(如果只能在调试器中检测到的话).VS2013更新4.
try
{
// do something
}
catch (WebException ex) // <- both variables are named 'ex'
{
Logger.Log("Error while tried to do something. Error: " + ex.Message);
}
catch (Exception ex) // <- this 'ex' is null
{
Logger.Log("Error while tried to do something. Error: " + ex.Message);
}
解决方案是以不同的方式命名异常变量.
try
{
// do something
}
catch (WebException webEx) // <- all good in the hood
{
Logger.Log("Error while tried to do something. Error: " + webEx.Message); // <-
}
catch (Exception ex) // <- this 'ex' correctly contains the exception
{
Logger.Log("Error while tried to do something. Error: " + ex.Message);
}