c# - 如何区分 InvalidOperationException 异常类型？

Question

如何检测 InvalidOperationException 类型

这是内部异常消息:

System.InvalidOperationException: ExecuteNonQuery requires an open and available Connection. The connection's current state is closed.

我需要准确地检测到这种类型的异常来处理它。我可以知道它的 HResult 编号或异常代码吗？还是其他方式？

Answer 1

这段代码可能有帮助

try
{
    //your code here...
}
catch (Exception exception) when (exception.InnerException is InvalidOperationException)
{
    var exceptionMessage = "ExecuteNonQuery requires an open and available Connection";
    if (exception.Message.Contains(exceptionMessage) || exception.InnerException.Message.Contains(exceptionMessage))
    {
        //handle it...
    }
}