How to get values from App.Config.
Code:
<configuration>
<appSettings>
<add key="ShowRoomCode" value="1000"/>
<add key="FolderPath" value="D:\\Images\\Book\\"/>
</appSettings>
</configuration>
string imageFolderPath = ConfigurationManager.AppSettings["FolderPath"];
But it returns null value. Config file is in the Same project.
If you expand the Properties section of Visual Studio and double click the settings section, you will be able to add custom settings which end up like so in the config file:
<configuration>
<configSections>
<sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
<section name="WpfApplication1.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
</sectionGroup>
</configSections>
<userSettings>
<WpfApplication1.Properties.Settings>
<setting name="FilePath" serializeAs="String">
<value>Thing</value>
</setting>
</WpfApplication1.Properties.Settings>
</userSettings>
</configuration>
Which you can then do this in your code:
string thing = Properties.Settings.Default.FilePath;
Which is nice because it gives you type safety too
The code you wrote should work - make sure you haven't changed 'BuildAction' of the config file.
Related
In a very simple Silverlight Application I have a DomainService Class which has a single method that returns a list of Letter Objects.
The application works fine when I run it in VisualStudio. However, when I publish it to a folder on my Windows 10 local machine and run it using IIS (version 10.0.166299.5) I get the following error:
The remote server returned an error: NotFound.
at System.ServiceModel.DomainServices.Client.OperationBase.Complete(Exception error) at System.ServiceModel.DomainServices.Client.LoadOperation.Complete(Exception error) at System.ServiceModel.DomainServices.Client.DomainContext.CompleteLoad(IAsyncResult asyncResult) at System.ServiceModel.DomainServices.Client.DomainContext.<>c__DisplayClass1b.b__17(Object )
I supect this is due to something being wrong in missing in my WebConfig file. My WebConfig Currently looks like this:
<?xml version="1.0"?>
<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.6" />
<httpRuntime targetFramework="4.6" />
</system.web>
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<modules runAllManagedModulesForAllRequests="true">
<add name="DomainServiceModule" preCondition="managedHandler" type="System.ServiceModel.DomainServices.Hosting.DomainServiceHttpModule, System.ServiceModel.DomainServices.Hosting, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</modules>
</system.webServer>
<system.serviceModel>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
</system.serviceModel>
</configuration>
The code for my Domain Service Class is like this:
using System.Collections.Generic;
using System.Linq;
using System.ServiceModel.DomainServices.Hosting;
using System.ServiceModel.DomainServices.Server;
using SilverData.Web.Models;
namespace SilverData.Web.Services
{
[EnableClientAccess]
public class DrugsRiaService : DomainService
{
public IQueryable<Letter> GetAllLetters()
{
List<Letter> letters = new List<Letter>();
Letter letterA = new Letter { ID = 1, Statement = "Mike" };
Letter LetterB = new Letter { ID = 2, Statement = "Emma" };
Letter LetterC = new Letter { ID = 3, Statement = "Peter" };
letters.Add(letterA);
letters.Add(LetterB);
letters.Add(LetterC);
return letters.AsQueryable();
}
}
}
The error was due to the problem that .svc file wasn't being served.. The problem got solved with the kind help from the Kyle Abraham on Experts Exchange.
https://www.experts-exchange.com/questions/29084691/RIA-Service-Error-in-a-Silverlight-Application.html
The solution was to add the following line to the webserver section of the Webconfig
<handlers>
<add name=".svc" verb="*" path="*.svc" type="System.ServiceModel.Activation.ServiceHttpHandlerFactory, System.ServiceModel.Activation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</handlers>
I'm not sure, its a guess as I have not used RIA for awhile, but I think letters needs to returned as something other than queryable... try ToList() which causes the query to execute, and the payload is complete with the complete enumeration that was retrieved from the database. Remember, this is a remote call from a client, not a local one that can extend the queryable.
I am trying to understand how log4net works so I've added this to my app.config (I should add that Console Appender and FileAppender work perfectly, I only have trouble with the AdoNetAppender).
How can I debug this, to see if at least the connection to db succeeds?
The problem is the INSERT statement isn't executed.
I should add the
Data Source=MyWorkgroup\SQLEXPRESS;Initial Catalog=MyNewDatabase;User ID=juan;password=juan,
works perfectly when I try to connect to SQL Server manually, so not sure if that's the problem.
Also, the ConnectionType was taken from the official site:
https://logging.apache.org/log4net/log4net-1.2.11/release/sdk/log4net.Appender.AdoNetAppender.ConnectionType.html
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net"
type="log4net.Config.log4netConfigurationSectionHandler, log4net"/>
</configSections>
<log4net>
<appender name="AdoNetAppender"
type="log4net.Appender.AdoNetAppender">
<bufferSize value="10" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="Data Source=MyWorkgroup\SQLEXPRESS;Initial Catalog=MyNewDatabase;User ID=juan;Password=juan;Pooling=False" />
<commandText value="INSERT INTO Logs([logDate],[logThread],[logMessage]) VALUES(getdate(),'1','1')" />
<commandType value="Text" />
</appender>
<root>
<level value="DEBUG"/>
<appender-ref ref="AdoNetAppender"/>
</root>
</log4net>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
</configuration>
Later edit (after using the debug method recommended by David):
haacked.com is indeed extremely interesting, great tip! However, it seems that it's describing what I'm instructing log4net to log, but not the result of those actions(?), if I'm reading this well (no failed/or succeeded?)
e.g.
log4net: Setting Property [ConnectionType] to String value
[System.Data.SqlClien t.SqlConnection, System.Data,
Version=1.0.3300.0, Culture=neutral, PublicKeyToke n=b77a5c561934e089]
log4net: Setting Property [ConnectionString] to String value [Data
Source=MyWorkgroup\SQLEXPRESS; Initial
Catalog=MyNewDatabase;
User ID=juan; Password=juan;
Pooling=False] log4net: Setting Property [CommandText] to String value [INSERT INTO Logs([logDate],[logThread],[logMessage]) VALUES(getdate(),'1','1')] log4net:
Setting Property [CommandType] to CommandType value [Text] log4net:
Created Appender [AdoNetAppender] log4net: Adding appender named
[AdoNetAppender] to logger [root]. log4net: Hierarchy Threshold []
Piece of code that helped me obtain this info (in case the site should become unavailable) is:
<appSettings>
<add key="log4net.Internal.Debug" value="true"/>
</appSettings>
<system.diagnostics>
<trace autoflush="true">
<listeners>
<add
name="textWriterTraceListener"
type="System.Diagnostics.TextWriterTraceListener"
initializeData="C:\temp\log4netdiagn.txt" />
</listeners>
</trace>
</system.diagnostics>
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
</configSections>
<connectionStrings>
<add name="Citrus_Welding.My.MySettings.CitWeldConnectionString"
connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source="C:\Citrus Welding\CitWeld.mdb""
providerName="System.Data.OleDb" />
</connectionStrings>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
</configuration>
I am looking at the connection string, I need the Data Source to = a selected file from another page by default... I tried & pagename.openfiledialog.filename & but I keep getting an error. Any ideas?
It appears that you're saying that you want the user to be able to set the Data Source at run time. If so then omit it from the connection string in the config file and set it like this at run time:
Dim builder As New OleDbConnectionStringBuilder(My.Settings.CitWeldConnectionString)
builder.DataSource = newDataSourceValue
Dim connection As New OleDbConnection(builder.ConnectionString)
I have an app.config file that stores values in a few different sections. I have these snippets:
<configuration>
<configSections>
<sectionGroup name="someDataAccessLayer">
<section name="databaseConnectionStrings" type="sometype" />
</sectionGroup>
</configSections>
<someDataAccessLayer>
<databaseConnectionStrings>
<databaseConnectionString name="someSQL"
value="database=somedatabase;Integrated Security=False;User Id=sa;server=someserver;Password=somepassword/>
</databaseConnectionStrings>
</someDataAccessLayer>
How do I read the connection string in the codebehind? Specifically the value which is
database=somedatabase;Integrated Security=False;User Id=sa;server=someserver;Password=somepassword
Thanks for your help! Please let me know if the question is still unclear.
Your configuration section will be associated with some .NET class to handle it:
<configSections>
<sectionGroup name="someDataAccessLayer">
<section name="databaseConnectionStrings" type="sometype" />
</sectionGroup>
</configSections>
So to read the settings from the <localeSettings> section, you need to use the ConfigurationManager (add a reference to System.Configuration to your project) to get those settings into an instance of that class:
sometype cs = ConfigurationManager.GetSection("someDataAccessLayer/databaseConnectionStrings") as sometype;
Now you have an object of type sometype that contains all the settings in that config section. One of those properties will be a list of database connection strings, which you can now enumerate and find the appropriate one and read it's .Value property.
App.Config Settings:
<configuration>
<configSections>
</configSections>
<connectionStrings>
<add name="MyApp.LocalConnectionString"
connectionString="Data Source= .\SQLEXPRESS;Initial Catalog=DBName;Integrated Security = true"
providerName="System.Data.SqlClient" />
Access at DataLayer using the ConfigurationManager as:
// add reference
using System.Configuration;
// then access connection string in your class
private static string strConnectionString = ConfigurationManager.ConnectionStrings["MyApp.LocalConnectionString"].ConnectionString;
Quick question about the InvokeOperation, so from my view model i have this...
private void IsValidNumber(string value)
{
_context.NumberIsValid(value, ValidNumberCallback, null);
}
private void ValidNumberCallback(InvokeOperation<bool> obj)
{
var test = obj.Value; //ALWAYS FALSE????
}
and in my domainSerice class i have this.
[Invoke]
public bool NumberIsValid(string number)
{
return true;
}
and the call back value is always false??? what am I missing???
any help or pointers would be greatly appreciated
You should check for HasError property.
If for any reason connection to your http server fails, method callback will be called but with HasError as true and you will get details of the error in Error object.
welp... I decided to just hurry and build a simple test site and it works just peachy... I think it might have to do with something in my webconfig... if I ever find the real issue I'll update this.
<compilation debug="true" targetFramework="4.0">
<assemblies>
<remove assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Data.DataSetExtensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Speech, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /></assemblies>
</compilation>
the assemblies seems to have been the issue, I removed that section and it started working again... why?? no clue