How to read app.config file in VB.net?
In this tutorial, I will show you how to read the app.config file in VB.Net.
There are 2 ways to store data in config file, you can save it in
- appSettings
- userSettings
You can use this interface to configure setting in userSetting
1. Sample Config file with 2 different method
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" > <section name="ReadConfig.My.MySettings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" /> </sectionGroup> </configSections> <appSettings> <add key="URL" value="http://instinctcoder.com" /> </appSettings> <system.diagnostics> <sources> <!-- This section defines the logging configuration for My.Application.Log --> <source name="DefaultSource" switchName="DefaultSwitch"> <listeners> <add name="FileLog"/> <!-- Uncomment the below section to write to the Application Event Log --> <!--<add name="EventLog"/>--> </listeners> </source> </sources> <switches> <add name="DefaultSwitch" value="Information" /> </switches> <sharedListeners> <add name="FileLog" type="Microsoft.VisualBasic.Logging.FileLogTraceListener, Microsoft.VisualBasic, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" initializeData="FileLogWriter"/> <!-- Uncomment the below section and replace APPLICATION_NAME with the name of your application to write to the Application Event Log --> <!--<add name="EventLog" type="System.Diagnostics.EventLogTraceListener" initializeData="APPLICATION_NAME"/> --> </sharedListeners> </system.diagnostics> <userSettings> <ReadConfig.My.MySettings> <setting name="SettingURL" serializeAs="String"> <value>http://instinctcoder.com</value> </setting> </ReadConfig.My.MySettings> </userSettings> </configuration> |
2. Read app.config File In VB.Net
There are few ways to read app.config file in vb.net
Method 1
1 | System.Configuration.ConfigurationManager.AppSettings.Get("URL") |
Method 2
1 | My.Settings.SettingURL |
Method 3
1 2 | Dim reader As New System.Configuration.AppSettingsReader MsgBox(reader.GetValue("URL", GetType(String))) |
Method 4 – The obsolete way
When you type below in your code it will appear message to use method 1.
1 | System.Configuration.ConfigurationSettings.AppSettings.Get("URL") |
Tips:
I personally preferred method 3, because when there is more than one project in a solution this method allows you to read from any project in your solution.
Tan Woon How
He is a learner and know little around .Net and Java. He learned and share if you see his mistake... feel free to comment and laugh at him... and also please help to correct him.
