app.config file in C# project

app config under solution app.config

1. How to: Add an application configuration file to a C# project

By adding an application configuration file (app.config file) to a C# project, you can customize how the common language runtime locates and loads assembly files. For more information about application configuration files, see How the runtime locates assemblies (.NET Framework)..

When you build your project, the development environment automatically copies your app.config file, changes the file name of the copy to match your executable, and then moves the copy to the bin directory.

2. Configuration file schema for the .NET Framework

Configuration files are standard XML files that you can use to change settings and set policies for your apps. The .NET Framework configuration schema consists of elements that you can use in configuration files to control the behavior of your apps. The table of contents for this section reflects the schema hierarchy for startup, runtime, network, and other types of configuration settings.

For information about the types, format, and location of configuration files, see Configure apps. Familiarize yourself with XML if you want to edit the configuration files directly.

3. Configuring Apps by using Configuration Files

The .NET Framework, through configuration files, gives developers and administrators control and flexibility over the way applications run. Configuration files are XML files that can be changed as needed. An administrator can control which protected resources an application can access, which versions of assemblies an application will use, and where remote applications and objects are located. Developers can put settings in configuration files, eliminating the need to recompile an application every time a setting changes. This section describes what can be configured and why configuring an application might be useful..

4. Manage application settings (.NET)

Application settings enable you to store application information dynamically. Settings allow you to store information on the client computer that should not be included in the application code (for example a connection string), user preferences, and other information you need at run time.

Application settings replace the dynamic properties used in earlier versions of Visual Studio.

Configure Form Appearance

5. Adjusting the size and scale of Windows Forms

This topic provides links to information about resizing Windows Forms..

6. Windows Forms Add Configuration Element

The <add > element adds a predefined key that specifies whether your Windows Form app supports features added to Windows Forms apps in the .NET Framework 4.7 or later.

7. High DPI support in Windows Forms

Starting with the .NET Framework 4.7, Windows Forms includes enhancements for common high DPI and dynamic DPI scenarios. These include:

1. Improvements in the scaling and layout of a number of Windows Forms controls, such as the MonthCalendar control and the CheckedListBox control.
2. Single-pass scaling. In the .NET Framework 4.6 and earlier versions, scaling was performed through multiple passes, which caused some controls to be scaled more than was necessary.
3. Support for dynamic DPI scenarios in which the user changes the DPI or scale factor after a Windows Forms application has been launched.

In versions of the .NET Framework starting with the .NET Framework 4.7, enhanced high DPI support is an opt-in feature. You must configure your application to take advantage of it..

8. Windows Forms Configuration Section

Windows Forms configuration settings allow a Windows Forms app to store and retrieve information about customized application settings such as multi-monitor support, high DPI support, and other predefined configuration settings.

Windows Forms application configuration settings are stored in an application configuration file's System.Windows.Forms.ApplicationConfigurationSection element...

9. Adjusting the size and scale of Windows Forms

This topic provides links to information about resizing Windows Forms..

In This Section
1. How to: Resize Windows Forms Provides instructions for specifying the size of Windows Forms.
2. Automatic Scaling in Windows Forms Discusses how automatic scaling enables a form and its controls to be displayed appropriately between machines.
3. High DPI Support in Windows Forms Discusses Windows Forms' support for High DPI and dynamic scaling.
10. Changing the Appearance of Windows Forms

You can customize the look of your Windows Forms applications in many different ways, such as changing the border, opacity, shape, style, or setting a background image for your Windows Forms application..

11. How to: Change the Borders of Windows Forms

You have several border styles to choose from when you are determining the appearance and behavior of your Windows Forms. By changing the FormBorderStyle property, you can control the resizing behavior of the form. In addition, setting the FormBorderStyle affects how the caption bar is displayed as well as what buttons might appear on it. For more information, see FormBorderStyle..

12. App.Config: Basics and Best Practices

In one of my previous posts, I wrote about the .NET build configuration system. I mentioned the app.config file, but didn’t really dive into it. So let’s take a closer look at this file now. When you create a (non-web) .NET Framework application in Visual Studio, an app.config file is added to your project. When you create a class library or a .NET Core project, such a file is not included, although it can be done afterward..

13. What is App.config in C#.NET? How to use it?

Is there a way to prompt the user to set a path once after the setup of the application is completed?

14. Override the app.config File in a Test Studio Project

I would like Visual Studio to load the app.config file to get its run-time configuration settings..

15. Understanding & Using AppConfig File

Understanding & Using AppConfig File.

16. Multiple app.config in C# Solution based on Build Selection

In few projects I came across, I observed there is been a trend where based on the project build settings the application config settings can be tweaked, as commonly found in ASP MVC applications template..

17. Read AppSettings value from App.Config file using C# and VB.Net

Here Mudassar Ahmed Khan has explained how to read values of AppSettings from App.Config file using C# and VB.Net.

18. How to select different app.config for several build configurations

Multiple app.config files for deploying to different environments.

19. Managed App Configuration

Learn the basics of Managed App Configuration and how your app users could benefit

20. Web.config Vs App.config Vs Machine.config

will let you know why we use it. As you know all are configuration files which are used to store the data which would be key –value.

As per security purpose this data is known as secure data because it cannot be hacked by some external resource directly. So, let's start one by one to know more about these configuration files...

21. Multiple App.config in a Solution

Symptom: You get the following pop-up message that prompts you to check your application configuration:

“The request could not be performed because required configuration settings are missing. Please contact your administrator to fetch the latest configurations files”.

Solution: This issue occurs due to the presence of multiple App.config files in the solution. The App.config that holds all the required configuration for a GWM based solution to work is stored inside the SAP Service Reference folder under the project file. For running a GWM based solution you need to either have only one App.config file, or specifically load the GWM config file as and when needed..

Misc.

22. .NET/.NET Core

.NET is a free, cross-platform, open-source developer platform for building many different types of applications..