i' m trying to make loginapp in c++/cli with users data log. I would use fstream but it isnt possible in cli. So I use StreamWriter and i cant specify totally normal path C:\log.txt (also tried) C:\\log.txt And when i debug my programme i get error 'access is denied' but also i have this problem when i run it like an admin. However when I just specify it like a log.txt it works and the file is being maked in vs project folder and its not satisfying for me. I paste my code below.
StreamWriter^ log = gcnew StreamWriter("C:\log.txt", true);
log->WriteLine(newLogin);
log->WriteLine(newPassword);
log->Close();
label7->Visible = true;
I also tried a method with # operator but it also doesnt work. Sorry for my english.
C:\ is a path with admin permissions required. Try launching Visual Studio as administrator or change your path to some other which does not need them.
The documentation seems to say that the StreamWriter constructor will only accept a filename, not a full path: https://msdn.microsoft.com/en-us/library/19czdak8.aspx
The functionality that you want is available with another class, namely System.IO.File: https://learn.microsoft.com/en-us/dotnet/api/system.io.file?view=netframework-4.7.1
Related
I understand from the documentation that the SourceDiskCache folder cannot be configured using the XML configuration file and is only available "through code installation". However I can't figure out how!
I need to configure a custom folder. I have tried a few different things, with different results (both in Application_Start):
This doesn't throw an error, but uses the default folder (/cache)
var sourceDiskCachePlugin = new SourceDiskCachePlugin {VirtualCacheDir = "~/App_Data/cache"};
Config.Current.Plugins.GetOrInstall(sourceDiskCachePlugin);
This (and most other variations I have tried) throws the error "SourceDiskCache settings may not be adjusted after it is started."
new SourceDiskCachePlugin().Install(Config.Current);
Config.Current.Plugins.Get<SourceDiskCachePlugin>().VirtualCacheDir = "~/App_Data/cache";
How can I configure this?
Also, the documentation states that SourceDiskCache is in beta - is this still the case, and will XML configuration ever be available?
This would be the normal way to configure and install it:
var plugin = new SourceDiskCachePlugin()
plugin.VirtualCacheDir = "~/App_Data/cache";
plugin.Install(Config.Current);
If your code is running more than once, use Config.Current.Plugins.GetOrInstall(plugin); It's best if you only install the plugin during Application_Start.
However, approach #1 from your question should work equally well, as long as you've set the right NTFS permissions on App_Data.
I thought this would be dead simple however....
Right, so all I'm simply trying to do is read a value from my registry. I have been through several examples but can't get any of them to work. I've also tried running my application in Admin mode and still nothing. Can someone please help?
From all my examples that I've tried, I'll use the simplest one.
This works:
Dim val As String
val = Registry.LocalMachine.OpenSubKey("Hardware\Description\System\CentralProcessor\0").GetValue("Identifier").ToString()
MsgBox(val)
This (the one I want) doesn't:
Dim val As String
val = Registry.LocalMachine.OpenSubKey("SOFTWARE\PTSClient").GetValue("ConfigDB").ToString()
MsgBox(val)
THe latter path and value is one that I've manually created in the registry. I've checked the permissions between the two and they are the exact same. I've also tried running the app as administrator. I get a runtime error on the val= line, it says: Use the "new" keyword to create an object instance.
Any ideas? All the various online examples have failed and for the life of me, I can't figure out why...
Cheers,
J
Well, I have tried your code with a sample application compiled for x86 and, as expected, it fails with a null value exception.
I assume you are building an application for x86 mode and running in a 64bit environment.
Of course, if this is not the case, let me know and I will delete this answer.
In the situation outlined above, the calls to read/write in the LocalMachine.Software registry path will be automatically changed by the Operating System to read/write in the Software\Wow6432Node subkey and thus, your code is unable to find your manually inserted key ("SOFTWARE\PTSClient").
This code will give a null value as return from Registry.LocalMachine.OpenSubKey("SOFTWARE\PTSClient") leading to the failure to get the ConfigDB value.
You need to add your keys/values to the Software\Wow6432Node path or compile your application for AnyCPU mode or let your code write the value to the register (it will be redirected to the Wow6432Node).
I had to move a website on a bluehost server, that is in the Joomla Platform 1.7. I did alot of reasearch on Joomla.org and google and still haven't resloved the issue.
I recieve the following error: Infinite loop detected in JError. I went threw the configuration file and made sure that database and user match up with my new database parameters match up and I am still recieving this issue. Thank you. Urgent response will be very helpful. Currently working on this and this is not a good start. :(
I have ran into the same issue moving my Joomla site from one server to another. What I learned is the following;
Make sure you look at the parameters in configuration.php. Double check if the following variables in your configuration.php file is correct. (Double Check) You did mention that you already have done so. In that case I am 98% sure that you have an issue dealing with file Attributes with configuration.php. Change the Attributes of configuration.php from 444 to 666.
To get detailed information about the error, open the error.php file located in /libraries/joomla/error/ on your server.
In the following code:
public static function throwError(&$exception)
{
static $thrown = false;
// If thrown is hit again, we've come back to JError in the middle of
throwing
another JError, so die!
if ($thrown) {
// echo debug_print_backtrace();
jexit(JText::_('JLIB_ERROR_INFINITE_LOOP'));
}
change the line // echo debug_print_backtrace();
to the following:
**print"<pre>";
echo debug_print_backtrace();
print"</pre>";**
Remember- When you change the parameters in configuration.php to you new database make sure you that configuration.php file attribute is set to 666, Otherwise when you go to save the file it will not change. Try this first.. Good luck.
I have an application that has a load of values in its app.exe.config file. The application is used by a few users, and the settings would change on a regular basis. so im having to change the config file, and send it out to all users.
I'd love to move the config file to the network somewhere and point the app to this file. ive tried to use;
Imports System.Configuration.ConfigurationManager
OpenExeConfiguration("I:\app config\HelpDeskQuickCallLogger.exe.config")
But i cant get it to read in the values.
Anyone any ideas?
This is how we handle this requirement if a specific configuration file (sSpecificConfigurationFile) is specified:
Dim oConfig As System.Configuration.Configuration
If sSpecificConfigurationFile.EndsWith(".config", StringComparison.InvariantCultureIgnoreCase) Then
Dim oMap As New ExeConfigurationFileMap
oMap.ExeConfigFilename = sSpecificConfigurationFile
oConfig = ConfigurationManager.OpenMappedExeConfiguration(oMap, ConfigurationUserLevel.None)
Else
oConfig = ConfigurationManager.OpenExeConfiguration(sSpecificConfigurationFile)
End If
I am not sure if this is what you are looking for but see if this Code Project Article helps.
Description from above article:
This article demonstrates how to write a custom Settings Provider to
allow you to persist your My.Settings to your own storage system.
I am trying to get my vb.net application to look inside a folder on the web server and then let me know whether there are files in there or if the folder is empty...Would anybody know where i would begin? Thanks
Use the DirectoryInfo.EnumerateFiles() method.
Dim myDir as DirectoryInfo = new DirectoryInfo(pathToDir)
If (myDir.EnumerateFiles().Any())) Then
' Got files in direcotry!
End If
If you are also interested in finding out if there are directories within this one, there is also DirectoryInfo.EnumerateDirectories().
I would suggest you have a look at Directory.GetFiles
If your program is running on the web server, you can simply check whether Directory.GetFileSystemEntries(path) returns anything.
If your program is running on a client, you'll need to make a server-side script that calls Directory.GetFileSystemEntries and returns a value to the client.