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Modifying WebConfig File programmatically

, 10 Oct 2012 CPOL
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This article describes how to modyfy the webconfig file of a SharePoint site


While working in SharePoint, I know the difficulties a developer face due to security issues. Here is a simple example how to modify your SharePoint web config file programmatically.


If you are using some external DLL ( third party DLLs) then you may need to modify the "trust level" from wss_minimal to full. In that case you may want to do it programmatically insted of doing this manually.

Here is the code spinet for achieving this task.

Using the code

First of all I am doing all these things in feature activate of the feature.

Just put the following code in your feature activation block.
 // Gets the current webapplication from feature properties.                    

   SPWebApplication webApp = properties.Feature.Parent as SPWebApplication;  

   // Declairs the webConfigmodification variable.

   SPWebConfigModification myModification = newSPWebConfigModification("level", "configuration/system.web/trust");

   //Gets a collection of web config modification.

   System.Collections.ObjectModel.Collection<SPWebConfigModification> allModifications = webApp.WebConfigModifications;


         myModification.Value = "Full";

         myModification.Owner = "TapanKumar";

         myModification.Sequence = 1;    

         myModification.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureAttribute; 

         allModifications.Add(myModification); // Add the modifications.



   webApp.Update(); // Update the Web application.

Remember this will work for the whole SPFarm.  If you want it for a single site only then use SPSite insted of SPFarm


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Comments and Discussions

GeneralMy vote of 1 Pinmembercrb900027-Oct-12 7:16 
QuestionWorst Idea Ever Pinmembercrb900024-Oct-12 16:42 
Seriously, this is one of the single worst ideas ever. I manage development on a large enterprise installation for the government. If you as a developer don't have access to the server, and you shouldn't unless it is a development server, you as the developer should never override built in protections.

If any of my developers suggest anything like this they will be out of a job before they get done explaining it. If I find one of my contract companies trying anything like this, they'd lose their rating to work with the government.

By the way, if you are a developer working on a developer server, you should learn to do things the proper way so you have an understanding of the deployment documentation your IT staff will use to deploy your solution the PROPER WAY.
Questionhello Pinmemberzelinaa11-Oct-12 5:40 
AnswerRe: hello PinmemberMr. Tapan Kumar18-Oct-12 2:09 
AnswerRe: hello PinmemberMr. Tapan Kumar18-Oct-12 2:12 
Question:) PinmemberMember 950453611-Oct-12 2:19 
AnswerRe: :) PinmemberMr. Tapan Kumar18-Oct-12 2:10 
AnswerRe: :) PinmemberMarcus Kramer18-Oct-12 11:01 
Newshelped me out PinmemberKill the BUG10-Oct-12 23:25 
GeneralRe: helped me out PinmemberMarcus Kramer18-Oct-12 11:00 
Generalnice one Pinmembertarun kumar sahoo10-Oct-12 23:24 
GeneralRe: nice one PinmemberMarcus Kramer18-Oct-12 10:57 

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