C＃中应用程序的配置文件

Question

Could somebody walk me through the ins and outs of a configuration file: what is it, how to make it, what to do with it.

I was given an assignment by my senior to have a configuration file that will do the ff: remembering the file location of an xml file and logging it into the configuration file. For instance: upon opening the winforms, there's already a textbox with the file location written in it, when user open the filedialogbox and selects another file it would be written in the text box. user closes the winform. next time the user opens it, the last selected file location would be in the textbox.

Is this possible? My senior told me I could do this with the configuration file, as he is terribly busy, he cannot explain it to me further on what to do with it. Based on his short explanation, am I correct to think that this config file is like an XML file? Any examples you could provide for easy understanding?

I saw this and this but I can't really understand much from it. Is there like a "Configuration Class (C#) for Dummies" out there?

Answer 1

You can create your own class that contains all the user settings you want to save and then use XmlSerializer to read the file when the program first starts, and write when the program exits.

I gave up trying to use the built-in Settings . The main difficulty was trying to get the settings file to read from and write to the desired folder.

Answer 2

Configuration file is the file which comes with the exe after compilation. In this file whatever values we are giving can be read from the application. So if there is any change in the values inside the application we can set those values in this configuration file. For example, your application , the path of xml file is changing ,this can be set from configuration file First right click the project file from your solution explorer and select Add new item. From the window select Applicatiopn COnfiguration file and give the the name app.config and press ok Inside the app.config . inside the config section add

<appSettings>
    <add key="Xmlpath" value="C:\temp\xmlfile.xml" />

 </appSettings>

Add System.Configuration to your references Add using System.Configuration; to your form In page load

string path = ConfigurationManager.AppSettings["Xmlpath"];
textbox.Text=path;

Even after compilation the xml path can be changed ,as app.config will is accessible from outside the exe.

To change this path dynamically , you need to do more coding check this link 1. http://www.codeproject.com/Articles/14465/Specify-a-Configuration-File-at-Runtime-for-aC-Co 2. http://www.codeproject.com/Articles/14744/Read-Write-App-Config-File-with-NET like