Very short question: Is there a more elegant way to do this:
Object tmp;
try {
tmp = somethingThatCanFail();
} catch (Fail f) {
tmp = null;
}
final Object myObject = tmp;
I've been trying to teach myself JavaScript, and one thing I was reading on is the try/catch structure. Unfortunately, the tutorial doesn't provide much explanation on how it would be useful, just how to set it up. Can anyone offer some insight?
below code can't catch the exception.
does catch can't catch the exception which occured in the function?
try
{
Arche.Members.Feedback.FeedbackBiz_Tx a = new Arche.Members.Feedback.FeedbackBiz_Tx();
a.AddFreeSubscriptionMember(itemNo, buyerID, itemName, DateTime.Today, DateTime.Today);
}
…
Hi,
Below is the usual Program.cs content for a windows service program:
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
ServiceBase[] ServicesToRun;
ServicesToRun = new ServiceBase[]
{
new MyService()
…
I'm using JODConverter to convert .xls and .ppt to .pdf format. For this i have code something like
try{
//do something
System.out.println("connecting to open office");
OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100);
System.out.println("connection object created");
connection.connect();
…
I'm writing a script and want to control the errors. However im having trouble finding information on error handling using the try, catch. I want to catch the specific error (shown below) and then perform some actions and resume the code. What code is needed for this?
This is the code i am running and im entering in a invalid…
What are your thoughts on code that looks like this:
public void doSomething()
{
try
{
// actual code goes here
}
catch (Exception ex)
{
throw;
}
}
The problem I see is the actual error is not handled, just throwing the exception in a different place. I find it more difficult to debug…
Hi,
Below is the usual Program.cs content for a windows service program:
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
ServiceBase[] ServicesToRun;
ServicesToRun = new ServiceBase[]
{
…
I recently installed Ubuntu 12.04 alongside windows 7. It was working fine but now when I try to boot with ubuntu after the operating system choice screen I get this.
Boot Error Message
Try (hd0,0): NFTS5: No ang0
Try (hd0,1): NTFS5: No ang0
Try (hd0,2): NTFS5: No ang0
Try (hd0,3): Extended:
Try (hd0,4): NTFS5: No ang0
Try…
Hi.
I'd like to indicate to SQL Server 2005, in my BEGIN CATCH...END CATCH block that the error is "handled"... That is, clear the error.
Is that possible??
Thanks.
A.
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Sometimes I do this and I've seen others doing it too:
VB:
Try
DontWannaCatchIt()
Catch
End Try
C#:
try
{
DontWannaCatchIt();
}
catch {}
I know I should catch every important exception
and do something about it, but sometimes it's not important to - or am I doing something wrong?
Is this usage of the…
The try catch methodology of programming is a great innovation for SQL 2005+. The first question you should ask yourself before using Try/Catch should be “why?”. Why am I going to use Try/Catch? Personally, I have found a few uses, however I must say I do fall into the category of not [...]
I am validating data, in this case I want one of three ints. I am asking this question, as it is the fundamental principle I'm interested in. This is a basic example, but I am developing best practices now, so when things become more complicated later, I am better equipped to manage them.
Is it preferable to have the…
I'm dealing with some code that has fantastically long methods (10k lines!) and some odd use of try-finally and try-except blocks. Some of the latter are long by themselves, and don't always have the try at the start of the method.
Obviously I'm trying to refactor the code, but in the meantime just being able to fix…
I was recently on a job interview and I was given a task to write simple method in C# to calculate when the trains meet. The code was simple mathematical equation.
What I did was that I checked all the parameters on the beginning of the method to make sure, that the code will not fail.
My question is: Is it better…
I do not have many kinds of Exceptions in my project.
Right now,(we use MVC) I have the try catch encompassing my entire code:
try{
fronController::dispatch($somthing...);
}catch(Exception $E){
//handle errors
}
I wonder if there is a good reason to use the try-catch block in as specific as possible way as I…
I have a loop that looks something like this:
for(int i = 0; i < max; i++) {
String myString = ...;
float myNum = Float.parseFloat(myString);
myFloats[i] = myNum;
}
This is the main content of a method whose sole purpose is to return the array of floats. I want this method to return null if there…
A very useful error handling TRY/CATCH construct is widely used to catch all execution errors that do not close the database connection. The biggest downside is that in the case of multiple errors the TRY/CATCH mechanism will only catch the last error. An example of this can be seen during a…
PowerShell Try Catch Finally I am a relative novice to PowerShell and tried (pun intended) to use the “Try Catch Finally” in my scripts. Alas the structure that we love and use in C# (or even – shudder of shudders - in VB) does not always work in PowerShell. It turns out that it works only when the error…
In the Windows Driver Kit (WDK) there are some driver code samples written in pure C, but sprinkled with some try-catch-finally constructs. Does someone know their semantics ? Thank you microsoft for your great tools and standards compliance.
Code extract from some_file.c:
try {
...
if…
I have always been of the belief that if a method can throw an exception then it is reckless not to protect this call with a meaningful try block.
I just posted 'You should ALWAYS wrap calls that can throw in try, catch blocks.' to this question and was told that it was 'remarkably bad advice'…
Coming from Eclipse/Java, I noticed that in VisualStudio/C# it is not mandatory to care about Exceptions. While Eclipse forces the user to implement a try-catch-block or to add a throws declaration, this is not the case in Visual Studio.
What is the reason Visual Studio doesn't inform about…
If you're looking to try out Solaris 11, there are the standard ISO and USB image downloads on the main page. Those are great if you're looking to install Solaris 11 on hardware, and we hope you will. But if you take the time to look down the page, you'll find a link off to the…