I'm currently creating a Login form and have this code:
string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
try
{
using (OdbcConnection connect = new OdbcConnection(connectionString))
{
connect.Open();
OdbcCommand cmd = new OdbcCommand("SELECT username, password FROM receptionist", connect);
OdbcDataReader reader = cmd.ExecuteReader();
if (username_login.Text == username && password_login.Text == password)
{
this.Hide();
MessageBox.Show("Invalid User", "Login Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
this.Close();
}
else
MessageBox.Show("Invalid User", "Login Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
connect.Close();
}
}
catch (OdbcException ex)
{
MessageBox.Show(ex.Message, "error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
But whenever I try to type in the username and password there is an error called "Configuration system failed to initialize". What kind of problem is this, and how could I solve this?
Make sure that your config file (web.config if web, or app.config if windows) in your project starts as:
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="applicationSettings"
type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
<section name="YourProjectName.Properties.Settings"
type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
requirePermission="false" />
</sectionGroup>
</configSections>
</configuration>
Note that inside the configuration element, the first child must be the configSections element.
In the name property on section element, make sure you replace YourProjectName with your actual project's name.
It happened to me that I created a webservice in a class library project, then I copied (overwriting) the config file (in order to bring the endpoints configuration) to my windows app and I started to have the same problem. I had inadvertently removed configSections.
Delete old configuration files from c:\Users\username\AppData\Local\appname and c:\Users\username\AppData\Roaming\appname and then try to restart your application.
Sometimes the Error occurs because a windows create a duplicate in the
C:\Users\App Data\Local\"You App Name"...
Just delete this folder and done. try it.
If you've added your own custom configuration sections to your App.Config, make sure you have defined the section in the <configSections> element. I added the my config XML but forgot to declare the configuration section up top - which caused the exception "Configuration system failed to initialize" for me.
After a long search I realised, this exception has an inner exception that tells you exactly what is wrong with your config file
I had this same problem with an MSTest class: Marlon Grech in his article says "the element has to be defined as the first element in the App.config."
So make sure that is the first element in under the element. I had put AppSettings first.
If you have User scoped settings you may also have a user.config file somewhere in the [Userfolder]\AppData\Local\[ProjectName] folder.
If you later remove the User scoped settings the user.config will not automatically be removed, and it's presence may cause the same error message. Deleting the folder did the trick for me.
I know this has already been answered but I had exactly the same problem in my unit tests. I was tearing my hair out - adding an appSettings section, and then declaring the configuration section as per the answer. Finally found out that I had already declared an appSettings section further up my config file. Both sections pointed to my external settings file "appSettings.config" but the first appSettings element using the attribute file whilst the other used the attribute configSource. I know the question was about the connectionStrings. Sure enough, this happens if the appSettings element is the connectionStrings element being duplicated with different attributes.
Hopefully, this can provide someone else with the solution before they go down the path I did which leads to wasting an hour or two. sigh oh the life of us developers. We waste more hours some days debugging than we spend developing!
I started to get this problem after uninstalling Oracle Client Drivers and it removed my C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\machine.config!
Copying it from another computer resolved the problem.
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="xyz" value="123" />
</appSettings>
</configuration>
Easy solution for .Net Core WinForms / WPF / .Net Standard Class Library projects
step 1: Install System.Configuration.ConfigurationManager by Nuget Manager
step 2: Add a new App.Config file
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="Bodrum" value="Yalikavak" />
</appSettings>
</configuration>
step3: Get the value
string value = ConfigurationManager.AppSettings.Get("Bodrum");
// value is Yalikavak
If you are calling it from a Class Library then add the App.Config file on your Main Project.
Wow it took me forever to figure out this one. For some reason changing the attribute [assembly: AssemblyCompany("CompanyName")] at AssemblyInfo.cs made this error disappear. I was referencing a project that had a different value for the attribute [assembly: AssemblyCompany("CompanyName")]. I maked sure both projects had the same attribute value and it worked great!
Same problem with me I solved my problem by removing verion="v3.5" from App.config.
Before
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2"/>
</startup>
<supportedRuntime version="v3.5" />//Remove this
</configuration>
Solution
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2"/>
</startup>
</configuration>
Here is how to use version on
MSDN Support Runtime Element
I solved the problem by using the below code
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<sectionGroup name="applicationSettings"
type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
<section name="YourProjectName.Properties.Settings"
type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
requirePermission="false" />
</sectionGroup>
</configSections>
<appSettings>
<add key="SPUserName" value="TestUser" />
<add key="SPPassword" value="UserPWD" />
</appSettings>
</configuration>
It is worth noting that if you add things like connection strings into the app.config, that if you add items outside of the defined config sections, that it will not immediately complain, but when you try and access it, that you may then get the above errors.
Collapse all major sections and make sure there are no items outside the defined ones. Obvious, when you have actually spotted it.
In my case the only solution was to add the reference to the System.Configuration in my Test project as well.
This is kinda dumb, but for me I fixed it by doing a get latest from source control on my code. I think there was some new configuration element that was added by someone else, and I needed to overwrite my configuration files. OP shows the error I had gotten, which wasn't really pointing me in the right direction.
I too faced the same problem, But accidentally i written the
without writting the ,the previous one should go inside this tags. thus the 'Configuration System Failed to Initialize' error was arising.
Hope it will help
In My case, I have two configsections in the app.config file. After deleting the one hiding in the code lines, the app works fine.
So for someone has the same issue, check if you have duplicate configsections first.
If you are dealing with an Azure WebJob - I had to remove the following after upgrading to the latest 4.6.1.
<compilation debug="true" targetFramework="4.6.1">
<assemblies>
<add assembly="System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
</assemblies>
</compilation>
Hope this helps.
In my case, within my .edmx file I had run the 'Update Model From Database' command. This command added an unnecessary connection string to my app.config file. I deleted that connection string and all was good again.
Try to save the .config file as utf-8 if you have some "special" characters in there. That was the issue in my case of a console application.
As #Flash Gordon mentioned in his comment, you will need to define any custom tag (as a section) in your App.config file, under <configSections>. For example, you're working on a test automation project with SpecFlow & adding <specFlow> tag, then a simplest version of App.config will look like this:
I just had this and it was because I had a <configuration> element nested inside of a <configuration> element.
I restarted Visual studio and even the whole PC.
I cleaned the project, rebuild, and deleted bin file.
Nothing helped until i changed the configuration from x64 to x86.
It worked on x86 but when i changed it back it also worked!
I tried all of the solutions above trying to figure out why one of my unit tests were failing to pick up the configuration from an app.config file that is perfect.
I had 2 references to the same assembly like so:
Removing the (duplicate) reference in yellow fixed it for me.
I hope this works for someone else, it drove me nuts for a while.
If you have a custom section, you need to mention that under configSections right below configurations tag.
Please check your transform files, make sure you remove the unnecessary tags.only the section that are going to vary needs to be there in transform files. dont mention config section in the transform files if not needed. this would also cause the problem.
if you have any syntax error in machine.config, then also this error is expected.
I was also getting
'System.Configuration.ConfigurationErrorsException' in System.Configuration.dll
If you have windows check the slashes / I was working with a project from a guy working in linux, so he had inverted them.
Related
I have had to add a monoSettings section to my Web.config file as I need to support colons in the url (similar to this question: ASP.NET special characters in URL (colon) not working even with requestPathInvalidCharacters="").
Now when I run my web-api service in visual studio (which I do for ad-hoc testing) it gives an error:
"The configuration section 'monoSettings' cannot be read because it is missing a section declaration"
I'm just wondering what is the best way to support this config in my Mono service without impacting being able to run in on Windows? Can I just flag it as optional or unimportant so that it won't fail when trying to read the config? Or is it just better to have a different build configuration for Mono - but I'd then have to maintain two versions of web.config with just this one minor difference.
I resolved this issue by adding a configSection to my Web.config as follows:
<configuration>
<configSections>
<sectionGroup name="system.web">
<section name="monoSettings" type="DataSetSectionHandler,SectionHandlers" />
</sectionGroup>
</configSections>
<system.web>
<monoSettings verificationCompatibility="1" />
<httpRuntime requestPathInvalidCharacters="<,>,*,%,&,\,?" />
</system.web>
</configuration>
I have an app.config file in Winforms application that holds a connection string. This is to go out to multiple tenant (clients) as a separate file. These clients have different database sources. This config file also holds other version information such as EF, Telerik reporting etc...
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1" />
and
<section name="Telerik.Reporting"
type="Telerik.Reporting.Configuration.ReportingConfigurationSection, Telerik.Reporting, Version=8.1.14.804, Culture=neutral, PublicKeyToken=a9d7983dfcc261be"
allowLocation="true" allowDefinition="Everywhere" />
The problem I have is when we have an updated version of EF or Telerik reporting with our application and we deploy (auto-deploy) this we need to overwrite the app.config file in the client directory to update the versions in the client config file. They then lose their connection setting and I do not want the client to have to go and re-enter it.
My question:
Is there a best practice to overcome this issue? Should I hold the connection string somewhere else?
Yep, the best thing to do is to move your connection strings section to an another config file and reference that file within your app.config.
For example create a new file called connectionStrings.config:
<connectionStrings>
<add name="Default" connectionString="[client_connection_string] "/>
</connectionStrings>
And in your app.config file:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<connectionStrings configSource="connectionStrings.config" />
</configuration>
A full example can be found here.
Use an external configuration file that is referenced from the application config file. E.g. include this section in your config file.
<configuration>
<connectionStrings configSource="connections.config"/>
</configuration>
The external config file is described http://msdn.microsoft.com/en-us/library/ms254494(v=vs.110).aspx
Note that storing connection settings in plaintext on a workstation is still a bad idea.
Using Windows registry for stuff like this is a definite no-no these days.
you can try to hold all connection data that you need in separate xml file so it dont get overwrite when you preform a deploy of updated version.
I have a console application written in C# under .net 4.0 It has a bunch of variables which I want to move into App.Config (so it will be all in one place). Added this part of code to App.Config (between configuration tags):
<configuration>
<appSettings>
<add key="RemoteDirectory" value="Some Text Here"/>
</appSettings>
</configuration>
In my program trying to test it with this code
Console.WriteLine(ConfigurationManager.AppSettings["RemoteDirectory"]);
but I keep getting "Configuration system failed to initialize" error.
Try looking the Inner Exception for more detailed information. It helped me out when I had this same trouble.
Also, check if the format is correct for the .net Framework you are using on your project. If you're using the framework 4.5 it should look like the one below:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<appSettings>
<add key="RemoteDirectory" value="Some Text Here" />
</appSettings>
</configuration>
The exception "Configuration system failed to initialize" is raised when one declares say an "appSettings" tag or any other tag after the "configuration" root tag, before declaring the "configSections" tag.
The schema of a configuration file requires the "configSections" tag to be the first child of the root tag.
<configuration>
<configSections>
<section name="xY" type=""/>
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NET Framework,Version=v4.5.2" />
</startup>
<xY></xY>
</configuration>
Make sure that the configSections section is placed right after configuration section (First child)
I also meet with this error. In my status I mixed <configSection> and <connectionStrings> prioritise.
I changed the order of the tags. First i write <configSection> then <connectionStrings> finally it fixed. Hope it will help someone.
Since it is a directory, I am assuming you are using incorrect symbols there.. perhaps a /?
appSettings must be spelt right. It should be appSettings - S should be capital. I had it all lower case and got this error.
Found the issue
Read the inner exception hope your code is in the try{}catch(){} block.
My Inner exception reads;
Only one "configSections" element allowed per config file and if present must be the first child of the root "configuration" element.
Its self explanatory
Hope this helps you.
Good day,
I have had that same problem in a certain PC of one of our clients.
I believe it is not the same kind of problem since in my case it was that the file C:\Users\"youruser"\AppData\Local\"ProgramEditorName"\"Program.exekeytoprogram"\"ProgramVersion"\user.config file got corrupted in that particular pc. I copied that file for backup just in case and deleted the file.
It worked for me I hope it can help others.
Have a nice day,
Xabier
Check for an Inner Exception, it seems to say exactly what is wrong with the config.
I am using the custom configuration provider as mentioned at the link.
My app config looks like:
<configuration>
<configSections>
<section name="log4net" type="ClassLibrary2.Class1,ClassLibrary2"/>
</configSections>
<log4net configProtectionProvider="XMLConfigProvider.XMLConfigProvider,XMLConfigProvider">
<EncryptedData>
<sectionInfo name ="log4net"></sectionInfo>
</EncryptedData>
</configuration>
I have placed the dll XMLConfigProvider in the calling application as well as gac. Still i am getting error:
An error occurred loading a configuration file: The protection provider was not found.
It's not as simple as this typo, is it?
"XMLConfigProvider.XMLCpnfigProvider"
Edit: Nope
OK, looking here: http://msdn.microsoft.com/en-us/library/ms254494.aspx
The value of the configProtectionProvider attribute seems to refer to the name in the section and is the type name of the provider itself.
Maybe
XMLConfigProvider
instead of
XMLCpnfigProvider
I am trying to read StartingMonthColumn and CategoryHeadingColumn
from the below app.config file using the code
ConfigurationSettings.AppSettings["StartingMonthColumn"]
but it is returning null, also ConfigurationSettings.AppSettings.Count returns zero
Please help me to read this in my windows application
<configuration>
<configSections>
<sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
<section name="CTARepository.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
</sectionGroup>
</configSections>
<userSettings>
<CTARepository.Properties.Settings>
<setting name="Setting" serializeAs="String">
<value />
</setting>
</CTARepository.Properties.Settings>
</userSettings>
<appSettings>
<add key="StartingMonthColumn" value="7"/>
<add key="CategoryHeadingColumn" value="1"/>
</appSettings>
</configuration>
ConfigurationSettings.AppSettings is obsolete, you should use ConfigurationManager.AppSettings instead (you will need to add a reference to System.Configuration)
int value = Int32.Parse(ConfigurationManager.AppSettings["StartingMonthColumn"]);
If you still have problems reading in your app settings then check that your app.config file is named correctly. Specifically, it should be named according to the executing assembly i.e. MyApp.exe.config, and should reside in the same directory as MyApp.exe.
Just for the future reference, you just need to add System.Configuration to your references library:
ConfigurationSettings.AppSettings is deprecated, see here:
http://msdn.microsoft.com/en-us/library/system.configuration.configurationsettings.appsettings.aspx
That said, it should still work.
Just a suggestion, but have you confirmed that your application configuration is the one your executable is using?
Try attaching a debugger and checking the following value:
AppDomain.CurrentDomain.SetupInformation.ConfigurationFile
And then opening the configuration file and verifying the section is there as you expected.
Try:
string value = ConfigurationManager.AppSettings[key];
For more details check:
Reading Keys from App.Config
The reason is simple, your call to ConfigurationSettings.AppSettings is not returning the required config file. Please try any of the following ways:
Make sure your app config has the same name as your application's exe file - with the extension .config appended eg MyApp.exe.config
OR you can use ConfigurationManager.OpenExeConfiguration(Assembly.GetExecutingAssembly().Location).AppSettings["StartingMonthColumn"]
Hope this helps
This:
Console.WriteLine( "StartingMonthColumn is {0}", ConfigurationManager.AppSettings["StartingMonthColumn"]);
works fine for me.
Note that ConfigurationManager is in the System.Configuration namespace (so you'll likely want a using System.Configuration; statement), and that since what you read in has a string type you'll need to parse what you read in to use it as a number.
Also, be sure you set system.configuration.dll as a reference in your project or build script.
Try to rebuild your project - It copies the content of App.config to
"<YourProjectName.exe>.config" in the build library.
Also add the key "StartingMonthColumn" in App.config that you run application from, for example in the App.config of the test project.