ViewState and Hacking ViewState Data In ASP.NET Beware!!!!!!!!

Asp.net View State help us to retrieve data after Postbacks. But  remember this data is generally not safe as it is simply serialized  and stored in the rendered HTML.

 Suppose  this is the Server Code

URL Mapping in ASP.NET

In an ideal world, we'd design our Web applications perfectly the first time. Pages would be created in the proper folder and stay there. For that matter, end users would never care about the URLs of the pages in our Web applications, so we could put pages anywhere we wanted without worrying about it.

Get Number of mysql connections if Connection are not cached

string  Qry=" FLUSH STATUS ;SHOW GLOBAL STATUS LIKE '%Max_used_connections%' ";
MysqlDataAdapter ad =new MysqlDataAdapter(Qry);
so fill that to dataset and u will get that.

If connection is cached u need to do work on thread cache and work on  that.

Send Email in Asp.net .. System.Web.Mail

 We can easily sent emails from asp.net using Mail Message which comes under name-space System.Web.Mail.

The Code is as Follows...

C# code Protection Using .NET REACTOR

The assembly (.exe, .dll) etc we build using .Net Framework  can be decombiled using visual studio command Promt.  ildasm is the commad that we can use to open an assembly as Resource hacker is doing.

C:\Program Files\Microsoft Visual Studio 9.0\VC>ildasm

Xml Creation and Reading that to DataSet

 Creating XML and Reading that is  very important when we come to Web-service, Serialization etc
Here i just give the basics of  creating and reading xml.

ASP.NET Viewstate MAC failed Error ... What is this?

    “Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.”

CAPTCHA generation in asp.net c#

CAPTCHA stands for "completely automated public Turing test to tell computers and humans apart." What it means is, a program that can tell humans from machines using some type of generated test. A test most people can easily pass but a computer program cannot. Mainly intended to reduce spam on our websites.

CSV generator for asp.net c# without writing file in server...

Last topic (http://martinkabraham.blogspot.com/2010/07/csv-generator-for-aspnet-c.html) we see generating csv by saving that csv file to server folder that  need to set folder permissions (chmod(7,7,7)). Now lets see to generate csv without writing that to server.
Encoding.ASCII.GetBytes(CompleteCsv) will givbe the bye[] for the  Respose object to binary write.

ASP .net PAGE CACHING and Substitution Control

Here we can have some basics about asp.net page caching. Think about a situations in which we are paging lakhs of data  in this case response each times goes to server and if the users are large in number that site goes to stuck definitely. It is worth to note that every post backed pages are in server memory and which are eating  server memory.  To over come this we use cache in asp.net pages.

Cache can be on same server or on another server. Cache have a duration and server will handle the post back only after the cache is expired. Till the page is in cache post back are not handled by the server.

CSV generator for asp.net c#

 The term csv stands for Comma Seperated values, means each value is seperated by simply a  comma.
eg:martin,sobin,alex

 The importance of csv is that it can open in excel,Open-office etc. so if we want to export some db data to excel .. the coder can export that to csv so the user can best fit that on Excel or  Open-office

This code will help you to generate csv from a dynamically created datable....
This example pull  download window to download csv file and save that to local machine.

Skin Files in Asp.net ( App_Themes) Easily apply style to Server Controls

To Customize server Controls , ie having different background image,fore-color,bold etc  it is hard to go to each control and set its properties or css class. Asp.net provide an easy way to manage this. By use if Skin files we are able to manage that.

Website->AddNewItem->SkinFile

Skin file will be added to the Project.Vs will automatically add that to App_Themes->SkinFiles->skin.skin.
To bring that skin file to our page go to Source view and  add