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Hello,
I'm trying to use an online compiler to do some operations in a file.
the line code:
string FlavorsFile= System.IO.File.ReadAllText(@"C:\Users\Public\FlavorsLines.txt");
System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet)
at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission cap, StackCrawlMark& stackMark)
at System.Security.CodeAccessPermission.Demand()
at System.Security.Permissions.FileIOPermission.QuickDemand(FileIOPermissionAccess access, AccessControlActions control, String[] fullPathList, Boolean checkForDuplicates, Boolean needFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.StreamReader..ctor(String path, Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize, Boolean checkHost)
at System.IO.File.InternalReadAllText(String path, Encoding encoding, Boolean checkHost)
at System.IO.File.ReadAllText(String path)
at Rextester.Program.Main(String[] args)
Thanks
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Hint: what does the word "online" mean?
Remote computers do not have access to your local file system - if they did, the ransomware problem would be orders of magnitude bigger than it is.
When you compile and run code on an online compiler, it runs on the remote computer, not your local one. And - very understandably - the account that the compiler and code run under on that remote computer have extremely limited access to the machine it runs on - or you could browse there computer at will via code and steal anything that isn't nailed down.
So the folder you want to access doesn't exist, and if it did, you wouldn't have access to it.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Is there a way to make some operations in this local file?
Take a copy from it to be accessed by the online compiler?
I have a job to be done but I don’t have the application
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I agree with 'Griff.
If you can copy your file up to whatever you're using to compile and run this code, great. Have at it. I can't tell you how to do it though because there's no standard or standard process to follow with an "online compiler".
But, doing this as part of a normal production process is garbage. You have no control over the availability of the service and no control over the security of the data you upload.
If you're doing this as part of a school project, fine, have at it. If for business, don't bother with it and download the free Visual Studio and do it "in-house".
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I'm trying to send an update request to existing database in my local machine's sql server instance. Here's the code where I'm formatting the update request and also setting parameters for it:
<pre>
updCmd = new SqlCommand("UPDATE Networks(ID, NetworkName, DomainName, LastUpdatedBy, LastUpdatedAt)" +
" VALUES(@ID,@netName,@domName,@lstUpdtdBy,@lstUpdtdAt) WHERE ID=" + netWorkIDInt, myConnection);
updCmd.Parameters.AddWithValue("@ID", netWorkIDInt);
updCmd.Parameters.AddWithValue("@netName",netName);
updCmd.Parameters.AddWithValue("@domName",domName);
//updCmd.Parameters.AddWithValue("@crtdBy", networksCreatedBy);
updCmd.Parameters.AddWithValue("@lstUpdtdBy",lstUpdtdBy);
//updCmd.Parameters.AddWithValue("@crtdAt",networksCreatedAt);
updCmd.Parameters.AddWithValue("@lstUpdtdAt",DateTime.Now);
</pre>
I've tried more than a few different formatting variations but nothing so far has cleared up the error mentioned in the subject, which is what causes the application to consistently fail.
I would appreciate any help of suggestions, in trying to resolve this problem.
Thanks.
Henry
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Make sure all your parameter values actually have values. I'd think ID, especially. (And there's no need to update the ID value, since you've used it in the WHERE. It is already the value it needs to be.)
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Start by parameterising the WHERE condition - you clearly know how to use parameters, so why are you adding string concatenation in there and potentially causing a problem?
That's ignoring the SQL Injection vulnerability, which is a bad idea at the best of times...
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hi,
your T-SQL syntax is wrong. Parentheses and the VALUES keyword are used for an INSERT, not for an UPDATE. Use SET followed by a comma-separated list of fieldname=value pairs.
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I need more caffeine...
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I think I'll go back to being an auto mechanic.
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Nah, it is easy to read over it without noticing it. If you've been bitten by it once, you'll spot it sooner. Also fun to see how it uses parameterized queries and string-concatenation
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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I am using visual studio for development.
Some code I am running run across multiple processes. For example I have a WebApi process and a consumer application. I can debug code across both process by setting up multiple startup projects.
I also wrote some unit tests.
Now the problem is, when my unit test is calling my webservices. I don't know how to run both the unit test and the web service in debug mode at the same time.
I could start the unit test without debugging and then run the unit test, but then I can't debug both across process.
How should I go about solving that development experience issue?
[EDIT]
I added a suggesion to VisualStudio feedback to make this workflow possible.
Please upvote! 
Improvement to UnitTest debugging experience - Developer Community
modified 1-Apr-19 19:20pm.
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I'm re-sending this as I had sent it to the Java forum by mistake.
I just found out that you can't have global variables in C#. I think they are supported in other languages like C, C++, Python and maybe Visual Basic.Net.
The program I want to convert to C# has a lot of variables that need to be used in other parts of the program such as procedures. I know you can add variables within the curly brackets for a procedure but in many cases the procedure needs to know about a lot of the variables to function and give a result and the same procedures are used many times in the code. I could use classes but I don't think you can have use the same variable in more than one class.
I'll need to experiment a bit to see if there is anyway around this.
Brian
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Please don't do this. you have already received some suggestions, so reposting is just going to duplicate effort.
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The idea is that you don't need global variables in C#, and by and large it's true.
You can simulate them using static :
public static class Globals
{
public static int GlobalInteger = 666;
}
...
Console.WriteLine(Globals.GlobalInteger);but I've only done it with a handful of variables in all the C# code I've ever written.
If you need lots of globals, it's normally a BIG sign that your whole design is wildly wrong.
I'd seriously think about the whole structure of your app if I were you - it's sounding very much like you didn't read any of the books after all.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I have been reading books and took a look at some tutorials on line Griff. I used the knowledge I gained to start work in writing my programs. My first attempt was to use procedures when the code was repeating in places. I managed to get the adventure compiler to work without any problems. I'm now working on the adventure driver.
Due to the type of game it has at least 32 variables for things such as Romm Names, Room Locations, Room Descriptions etc Some procedures require many variables to produce a result and some variables are used many times in procedures. The use of arrays also helped to simplify the code.
I'm now looking at using classes as a way to wrote the adventure driver code as I can't use global variables.
Brian
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Member 14154627 wrote: Due to the type of game it has at least 32 variables for things such as Romm Names, Room Locations, Room Descriptions etc Some procedures require many variables to produce a result and some variables are used many times in procedures. The use of arrays also helped to simplify the code.
So you have a Room class: it has a name, a location, a description, etc. Pass the room and the player and you have all the info you need!
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Is this what you mean Griff
public class Room()
{
public String [] RoomName;
public int [] RoomLocation;
public String RoomDescription;
public int [,] Direction;
}
The other way would be to use a structure but classes might have been solutions.
Brian
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No. Why would you have an array of names? Does a room have multiple names? None of the ones in my house do ...
Think about your house or flat, or whatever: what would you need to map that out as a collection of rooms?
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hi Griff.
Each room does have an array of directions that you can go in to enter other rooms (N,S,E,W).
Originally I used a double array suych as Direction[room number, direction] = 6
Directions were 1 - 6 for North, South,....Up, Down.
Direction[1,1] = 6. If I'm in room 1 and move North then I go to room 6.
Brian
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