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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 Pin
crb9000 at 27-Oct-12 7:16
membercrb900027-Oct-12 7:16 
QuestionWorst Idea Ever Pin
crb9000 at 24-Oct-12 16:42
membercrb900024-Oct-12 16:42 
Questionhello Pin
zelinaa at 11-Oct-12 5:40
memberzelinaa11-Oct-12 5:40 
AnswerRe: hello Pin
Mr. Tapan Kumar at 18-Oct-12 2:09
memberMr. Tapan Kumar18-Oct-12 2:09 

AnswerRe: hello Pin
Mr. Tapan Kumar at 18-Oct-12 2:12
memberMr. Tapan Kumar18-Oct-12 2:12 
Question:) Pin
Member 9504536 at 11-Oct-12 2:19
memberMember 950453611-Oct-12 2:19 
AnswerRe: :) Pin
Mr. Tapan Kumar at 18-Oct-12 2:10
memberMr. Tapan Kumar18-Oct-12 2:10 
AnswerRe: :) Pin
Marcus Kramer at 18-Oct-12 11:01
memberMarcus Kramer18-Oct-12 11:01 
Newshelped me out Pin
Kill the BUG at 10-Oct-12 23:25
memberKill the BUG10-Oct-12 23:25 
GeneralRe: helped me out Pin
Marcus Kramer at 18-Oct-12 11:00
memberMarcus Kramer18-Oct-12 11:00 
Generalnice one Pin
tarun kumar sahoo at 10-Oct-12 23:24
membertarun kumar sahoo10-Oct-12 23:24 
GeneralRe: nice one Pin
Marcus Kramer at 18-Oct-12 10:57
memberMarcus Kramer18-Oct-12 10:57 

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