Develop Reference

How to bypass FileNotFoundException

I have an text file which has some settings parameters for my project. My desktop layer reads this file. Therewithal , web layer's project read from from Server's MapPath.
FileStream has no operator to bypass an exception.I have tried to Exists control. But , i just need to bypass FileNotFoundException.

Place the code in a try catch.
try
{
//read
}
catch(FileNotFoundException ex)
{
//do logging for this silent catch
Console.WriteLine(ex);
}

How about this,
if (File.Exists(path)
{
// read file,
}
Another way,
if (File.Exists(path)
{
try
{
// read file,
}
catch (Some other exception related to file, read access violation, etc.)
{
handle exception,
}
}

How about checking the file exists or not?
if so, you can prevent throwing FileNotFoundException.
[Can not provide complete solution/feedback as we aren't sure about your actual implementation]
If(!File.Exists(<path_to_file>)
return;
// continue doing the rest only if file exists
Hope this helps. let us know if require more clarifications. It Would be nice if you could post your method implementation or at least a pseudo code for us to understand the actual problem you trying to solve.
Cheers,

How to add attachments to Allure report in C#?

The Allure framework is a really beautiful framework for test reporting.
Yet it has rather bad documentation for C#.
I want to add some things to my allure report:
Debug log (like all things I write to debug)
Screenshot
A file
How to do it? I have no idea, please help me if you know how to do it. It seems like AllureLifecycle class can help me but I'm not sure how to use it.
In case it matters I use Allure together with SpecFlow and MS test.

I searched more and seems I found the Truth.
And the Truth is it's possible to add all attachments I wanted but they can be added only as a file:
byte[] log = Encoding.ASCII.GetBytes(Log.GetAllLog());
AllureLifecycle.Instance.AddAttachment("DebugLog", "application/json", log, "json");
If you want to add a file from actually a path (location) you can do it with the same method but a different overload.
So just place this code in a "teardown\afterscenario" method or at any other place (for example at "afterstep" method) where you want to make this attachment. I use SpecFlow so if I add this to "AfterStep" hook then Allure displays those files attached to a specific step! That's amazing!)

it seems that allure has some events that can be used.
See : https://github.com/allure-framework/allure-csharp-commons/blob/master/AllureCSharpCommons.Tests/IntegrationTests.cs for more information.
haven't tried it myself, but something like this should work according to the documentation.
_lifecycle = Allure.DefaultLifecycle;
_lifecycle.Fire(new
MakeAttachmentEvent(AllureResultsUtils.TakeScreenShot(),
"Screenshot",
"image/png"));
_lifecycle.Fire(new MakeAttachmentEvent(File.ReadAllBytes("TestData/attachment.json"),
"JsonAttachment",
"application/json"));
Hope this helps.

Using this kind of code in AfterScenario method:
if (_scenarioContext.TestError != null)
{
var path = WebElementsUtils.MakeScreenshot(_driver);
_allureLifecycle.AddAttachment(path);
}
First it verifies, if Scenario passed, if not then
WebElementsUtils.MakeScreenshot(_driver)
method makes screenshot and returns it's path. Then this path I giving to Allure. As a second parameter in the same method I can give a name of the screenshot. As a result I am getting a screenshot in AfterScenario block in Allure report.
P.S. This is only for screenshots, about logs can't tell nothing.

With this example you can add an attachment exactly to the failed step
[AfterStep(Order = 0)]
public void RecordScreenFailure(ScenarioContext scenarioContext)
{
if (scenarioContext.TestError != null)
{
Allure.Commons.AllureLifecycle allureInstance = Allure.Commons.AllureLifecycle.Instance;
string screenshotPath = MagicMethodMakingScreenshotAndReturningPathToIt();
allureInstance.UpdateTestCase(testResult => {
Allure.Commons.StepResult failedStepRsult =
testResult.steps.First(step => step.status == Allure.Commons.Status.failed);
failedStepRsult.attachments.Add(new Allure.Commons.Attachment() {
name = "failure screen",
source = screenshotPath,
type = "image/png"
});
});
}
}

Why is StreamReader.ReadLine() and File.ReadAllText() returning null or empty

I did find a few similar questions, but they weren't able to point me in the right direction... This may be something entirely stupid, but if anyone could tell me why I can't get a string populated I'd appreciate it. Here's my method that's failing:
private static string passwordTrace { get; set; }
// ... lots of other code
private static void RefreshPassword()
{
try
{
string filePath = "\\\\[server ip]\\share\\folder\\file.abcd";
string npDecrypted;
DateTime lastRefreshDate = Properties.Settings.Default.lastRefresh;
if (DateTime.Now >= lastRefreshDate.AddDays(30))
{
using (StreamReader sr = new StreamReader(filePath))
{
string npEncrypted = sr.ReadLine();
if (npEncrypted.Length != 24)
{
string fr = File.ReadAllText(filePath);
npEncrypted = fr.Substring(0, 24);
}
npDecrypted = Decryptor(npEncrypted);
passwordTrace = npDecrypted; // added for debugging only! remove when done.
secureString npSecure = new SecureString();
foreach (char c in npDecrypted)
{
npSecure.AppendChar(c)
}
Properties.Settings.Default.adminpw = npSecure;
Properties.Settings.Default.Save();
}
}
}
catch (FileNotFoundException fnfe)
{
// code for handling this type of exception
}
catch (NullReferenceException nre)
{
// code for handling this type of exception
}
catch (Exception e)
{
// code to catch ANY other type of exception
}
}
Now, there are no errors or warnings when the VS debugger compiles everything, and it works correctly when debugging. But, if I copy the compiled exe (from C:\project\bin\Debug directory) and run it the issue arises.
The point that says passwordTrace = ... is called at another point by a message box. This works correctly when running via debugger and there aren't any exceptions thrown anywhere (I do have try/catches all over the place), but for whatever reason the PasswordTrace and the Properties.Settings.Default.adminpw don't seem to be holding their value throughout the applications execution.
Also, the file that is being read is an encrypted text file which will always have only 1 line of characters and that line is always 24 characters long. An example would be:
09sdjf09ausd08uf9!%38==
As a final statement, I also copied the app.exe.config and app.pdb to the server directory where I copied the compiled .exe file to see if that had anything to do with it and it didn't fix anything. I also tried running the .exe directly from the Debug directory (the same file that I'm copying elsewhere) and it works correctly. As soon as I move it off of the Local Disk it doesn't work.
So, my suspicions are that it has something to do with the environments working directory, or something to do with how the app is executing. I read something somewhere that noted the default users is not set, but I think that was specifically regarding ASP.NET. If that was the case and the user double-clicking on the .exe didn't have a proper network authentication then what would I do? And if it has something to do with the working directory, how can I circumvent this?
I'm gonna keep fiddling and if I figure it out I'll update this, but I'm so lost at the moment! lol! And for the last time - everything it/was working correctly until copying it to the server location.
Thanks in advance! :)

How do you actually implement the Search Contract? (C#)

I'm having some trouble understanding and getting the search contract to work in my Store app. I have been unable to find any sort of documentation or guide that explains the structure of using the contract. (I've looked at the quickstarts on MSDN, the Search Contract sample and the build video, but that only really deals with javascript)
So far I've been able to run a query and get a list (of Custom Objects) into my search contract page, and from there I try to assign that to defaultviewmodel.results, but no matter what query I type nothing shows up I on the page. Is there something else I need to set?
What I have so far is as follows (excerpts):
App.xaml.cs
protected override void OnSearchActivated(Windows.ApplicationModel.Activation.SearchActivatedEventArgs args)
{
SearchCharmResultsPage.Activate(args.QueryText, args.PreviousExecutionState);
SearchCharmResultsPage.ProcessSearchQuery(args.QueryText);
}
public async static void ProcessSearchQuery(string queryString)
{
try
{
StorageFile file = await ApplicationData.Current.LocalFolder.GetFileAsync("recipeCustomObject Debug.WriteLine("Database exists, connecting");
SQLiteAsyncConnection connection = new SQLiteAsyncConnection("CustomObject_db");
List<CustomObject> resultsList = new List<CustomObject>();
string query = "SELECT * FROM CustomObjectDB";
resultsList = await connection.QueryAsync<RecipeRecord>(query);
}
catch (FileNotFoundException fnfExc)
{
Debug.WriteLine("FNFEXC: " + fnfExc.ToString());
}
}
I think it is possible that here lies the problem, though I'm not sure if it is, or how to change it.
the resultsList list is created here, but because the method it asynchronous, I can't return from the method. Because of this I'm guess that when I try to assign this.DefaultViewModel[Results] = resultsList; in the LoadStateMethod, the object doesn't exist (thought the program throws no error). When I try to add the same line in the ProcessSearchQuery method, i'm told that this is not valid in a static method, but I think I need the method to be static? My problem might just be a fundamental logic error?

Finally got it! found the solution here: http://jeffblankenburg.com/2012/11/06/31-days-of-windows-8-day-6-search-contract
For those looking for an answer in the future, the key is to make sure you have your search logic within the Filter_SelectionChanged method, which was something I wasn't doing. Look at the guide within the above link to get an idea of the structure.

Have you looked at the Search contract sample on the developer center? There's a C#/XAML version there as well.

My open source Win8 RSS Reader framework implements Search (and Share) have a look at the source and if you still got questions, I'll be happy to help http://win8rssreader.codeplex.com/

Image path file not found

I have spent quite a while trying to solve this problem, but to no avail. I have searched stackoverflow as well as Google and have not been able to resolve my (seemingly) simple problem.
I am getting a FileNotFoundException in the following line:
Image.FromFile("\\Resources\\Icons\\key-icon.png");
The folders and image are really there, and I can't see what the problem is.

You should consider that it is started from "yourproject/bin/Release" so you need to go up 2 directories. Do this:
Image.FromFile("..\\..\\Resources\\Icons\\key-icon.png");

Try using an absolute path not a relative one... i.e.
Image.FromFile(Server.MapPath(#"~\Resources\Icons\key-icon.png"));

Image.FromFile(Path.Combine(AppDomain.CurrentDomain.BaseDirectory,
#"Resources\\Icons\\key-icon.png"))
Base-directory Combine your file-name

You may be missing a leading ".":
Image.FromFile(".\\Resources\\Icons\\key-icon.png");

Internally, Image.FromFile uses File.Exists to check whether the file exists. This method returns false when:
the file does not exist (makes sense)
the current process identity does not have permission to read the file
It may be that the second option is your problem.
And another possibility: is Resources a network share? In that case you should use the following:
Image.FromFile("\\\\Resources\\Icons\\key-icon.png");

For this case I discovered that sikuli does not automatically detect the root folder of the project. What you should do for this case is specify the folder using the command System.getProperty("user.dir");
import org.sikuli.script.*;
public class Test {
public static void main(String[] args) {
Screen s = new Screen();
try{
String pathYourSystem = System.getProperty("user.dir") + "\\";
s.click(pathYourSystem + "imgs/spotlight.png");
//s.wait(pathYourSystem + "imgs/spotlight-input.png");
//s.click();
s.write("hello world#ENTER.");
}
catch(FindFailed e){
e.printStackTrace();
}
}
}