Post New Question

How to prevent my .NET DLL to be decompiled?

Posted By :Ghanashyam Nayak Posted Date :December 10, 2010 Points :15 Category :VB.Net

By design .NET embeds rich Meta data inside the executable code using MSIL. Any one can easily
decompile your DLL back using tools like ILDASM (owned by Microsoft) or Reflector for
.NET which is a third party. Secondly there are many third party tools which make this decompiling
process a click away. So any one can easily look in to your assemblies and reverse engineer them
back in to actual source code and understand some real good logic which can make it easy to
crack your application.
The process by which you can stop this reverse engineering is using "obfuscation". It's a technique
which will foil the decompilers. There are many third parties (XenoCode, Demeanor for .NET)
which provide .NET obfuscation solution. Microsoft includes one that is Dotfuscator Community
Edition with Visual Studio.NET.

You can also find related Interview Question to How to prevent my .NET DLL to be decompiled? below:

How can you prevent a class from inheriting?

Using Sealed keyword (More...)

Can you allow class to be inherited, but prevent the method from being over-ridden?

Yes, just leave the class public and make the method sealed. (More...)

How will you prevent the user from viewing the text of the Stored Procedure?

We can use with Encryption in the Stored Procedure.

CREATE PROC MySample
WITH ENCRYPTION
AS
SELECT * FROM Employee
GO

EXEC sp_helptext MySample

Here is the result set:

The object's Comments have been encrypted.
(More...)

How to prevent the error while updating UI control from another thread?

Control.CheckForIllegalCrossThreadCalls = false; (More...)

How to prevent many asp.net development iis to be open

VS provides an explicit setting in the property grid of web application/site called Development Web Server - "Always Start When Debugging" which is set to True by default... If you set this Property to be False only one web server instance will be created for the start` up web project.
Reference Link :- http://stackoverflow.com/questions/6889975/how-do-i-prevent-from-many-asp-net-development-iis-to-be-open (More...)

How to prevent class from overriding?

We can define the class as sealed in C#.net and "Norinheritable" in VB.NET. (More...)

Can you prevent a class from Inheriting?

Yes, by defining the class as 'Sealed' (More...)

Quick Links For Interview Questions Categories:

ASP.Net	Windows Application	.NET Framework	C#	VB.Net	ADO.Net
Sql Server	SharePoint	Silverlight	OOPs	JQuery	JavaScript/VBScript
Biztalk	Patten/Practices	.IIS	WCF	WPF	WWF
Networking	Aptitude	Others	All

Find questions, FAQ's and their answers related to .NET, C#, Vb.Net, Sql Server and many more.

Now you can find lots of .NET, C#, Vb.Net, SQL Server,Windows, ASP.Net related Questions and their Answers here at www.dotnetspark.com. Our aim is to help you pass your certification Exams (MCP, MCSD, MCAD etc.,) with flying scores and get good name in your company.

So, Start looking our Interview Question section daily and improve your .NET Skills. You can also help others by posting Interview Questions and their Answers in this section.