try-catch

问题 This question already has answers here : Endless while loop problem with try/catch (2 answers) Closed 5 years ago . I need to be able to take user input until the input is greater than the initial price, but I also need to make it robust so that the user can't break the program by entering something other than a double/integer. If the user does enter something other than a double/int. The problem is that it creates a loop and repeats "Please enter valid currency" + "Please enter: price"

问题 This question already has answers here : .NET Core: Finally block not called on unhandled exception on Linux (2 answers) What are the uses of “using” in C#? (29 answers) Closed 3 months ago . A simple console application, in Visual Studio 2019, .Net Framework 4.7, Windows: static void Main(string[] args) { try { Console.WriteLine("In try"); throw new IndexOutOfRangeException(); } finally { *// Surprisingly this part is not being executed.* Console.WriteLine("In finally"); Console.ReadLine();

问题 I don't understand why the following code produces an error. Normally I can figure things out from the language specification, but in this case I don't understand the language specification. This isn't causing problems in my code, by the way, I just want to understand the language. Example: bool success; try { success = true; } catch { success = false; } finally { Console.WriteLine(success); // ERROR: Local variable 'success' might not be initialized before accessing } This behavior appears

问题 Catch block used whenever there is an exception while using smtp port,but it will throw exception thats fine, it will take a very long time and also the exception message will be directly shown in the code itself,requirement is to display an error message while executing in the localserver and shouldnot come to the code. It should throw exception whenever the server is down or invalid email Id or change in smtp port ,Conclusion is the error message should not come directly to the code.It

问题 I am having a little bit of a problem here. I am trying to figure out how to catch the IllegalArgumentException. For my program, if the user enters a negative integer, the program should catch the IllegalArgumentException and ask the user if he/she wants to try again. But when the exception is thrown, it doesn't give that option. It just terminates. I tried to use the try and catch method but it doesn't work for me. How do I catch this particular exception to continue to run instead of

问题 I am having a little bit of a problem here. I am trying to figure out how to catch the IllegalArgumentException. For my program, if the user enters a negative integer, the program should catch the IllegalArgumentException and ask the user if he/she wants to try again. But when the exception is thrown, it doesn't give that option. It just terminates. I tried to use the try and catch method but it doesn't work for me. How do I catch this particular exception to continue to run instead of

问题 I am having a little bit of a problem here. I am trying to figure out how to catch the IllegalArgumentException. For my program, if the user enters a negative integer, the program should catch the IllegalArgumentException and ask the user if he/she wants to try again. But when the exception is thrown, it doesn't give that option. It just terminates. I tried to use the try and catch method but it doesn't work for me. How do I catch this particular exception to continue to run instead of

问题 In my main tcl script, I am calling a tcl proc wrapped in a catch command. This proc in-turn calls 10 more procs. When there is an error in execution in any of those 10 procs, TCL still continues execution of my main script as expected and I am just able to view the error message which I captured. This error message may/may-not be conclusive enough to determine which of the 10 procs errored out during execution. Is there a way to still keep capturing all the stdout until the point of error? I

问题 To reproduce: #app.R library(shiny) library(RODBC) savefunc <- function() { conn <- odbcConnect(...) #put in a conn string u know works df = data.frame(testing=c("testing")) columnTypes = list(testing="varchar(128)") tryCatch( { sqlSave(conn, dat=df, tablename ="...", #put in a pre-existing tbl rownames = FALSE, colnames = FALSE, append=TRUE, varTypes=columnTypes) }, err=function(errorCondition) { cat("in err handler") message(errorCondition) }, warn=function(warningCondition) { cat("in warn

问题 Is it possible to create a try-catch that catches a non-Powershell cmdlet error? Example Error: iperf3: error - unable to connect to server: Connection timed out I want to catch that error and then try a different server for redundancy. Thank you for the assist. 回答1: you can try to build your own powershell function and throw an error with "throw " but you have to identify the error on your own within the powershell function 来源： https://stackoverflow.com/questions/63898608/powershell-try