How to edit the Web.config file using c#

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I have the web.config file in the root of c://inetpub/wwroot/Example/Web.config. This web.config file contains ConnectionStrings and Appsettings value. Now i want to modify the web.config appsettings and connection strings value by programmatically using c#. Pleas help me.

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[ OP's additional comments moved here from Solution section. ]

I have the web.config file in c://Inetpub/wwwroot/MyInstaller. When i am opening a file Its throwing error like "The relative virtual path 'C:/Inetpub/wwwroot/MyInstaller' is not allowed here.

Posted 20-Nov-11 20:37pm

Member 7684075

Updated 21-Nov-11 3:25am

RaisKazi

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Solution 4

I have the web.config file in c://Inetpub/wwwroot/MyInstaller. When i am opeing a file Its throowing error like "The relative virtual path 'C:/Inetpub/wwwroot/MyInstaller' is not allowed here.

Posted 20-Nov-11 21:33pm

Member 7684075

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RaisKazi 21-Nov-11 9:22am

Please do not add your comments as a Solution. Instead update your details using "Improve Question" link just below your Question.

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RaisKazi · Accepted Answer · 2011-11-20T20:41:00

Solution 1

Have a look at similar Question-Answer discussions below.

Read and Modify Web.Config file through C# code

Change a web.config programmatically with C# (.NET)

Posted 20-Nov-11 20:41pm

RaisKazi

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RaviRanjanKr 21-Nov-11 9:33am

My 5+

RaisKazi 21-Nov-11 9:44am

Thank you Ravi.

Sergey Alexandrovich Kryukov · Accepted Answer · 2011-11-20T20:42:00

This file is an XML file, and reading/writing XML is well supported by .NET. Choose from the methods I overview below:

XML Read/Write:

Use System.Xml.XmlDocument class. It implements DOM interface; this way is the easiest and good enough if the size if the document is not too big.
See http://msdn.microsoft.com/en-us/library/system.xml.xmldocument.aspx[^].
Use the classes System.Xml.XmlTextWriter and System.Xml.XmlTextReader; this is the fastest way of reading, especially is you need to skip some data.
See http://msdn.microsoft.com/en-us/library/system.xml.xmlwriter.aspx[^], http://msdn.microsoft.com/en-us/library/system.xml.xmlreader.aspx[^].
Use the class System.Xml.Linq.XDocument; this is the most adequate way similar to that of XmlDocument, supporting LINQ to XML Programming.
See http://msdn.microsoft.com/en-us/library/system.xml.xmldocument.aspx[^], http://msdn.microsoft.com/en-us/library/bb387063.aspx[^].

As this file is usually quite small, I would choose XmlDocument, which is probably the easiest. You will have to read the whole file into DOM, do you changed using DOM interface and then save the whole file.

—SA

Brij · Accepted Answer · 2011-11-20T20:43:00

Solution 3

Did you try google? Lots of examples are available.

You need to use WebConfigurationManager and open the config file. And later get the section, which you want to modify and update it. refer the links below

Click here

Click here 2

Posted 20-Nov-11 20:43pm

Brij

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RaviRanjanKr 21-Nov-11 9:32am

My 5+

moneymakermaster · Accepted Answer · 2011-11-21T17:57:00

Solution 5

http://www.dotnetspark.com/Forum/656-how-to-modify-webconfig-file-dynamically.aspx[^] Try this

Posted 21-Nov-11 17:57pm

moneymakermaster

How to edit the Web.config file using c#

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