victor graphics

adobe illustrator victor graphics

corael draw

http://www.coreldraw.com/us/product/graphic-design-software/?trkid=USsemKWS

Code foster

http://codefoster.com/

WEBGL

websocket

http://www.websocket.org/

The Modern Web Platform Jump Start

•codefoster.com/cssbook

•css-tricks.com

•htmldog.com

•codepen.io/codefoster

Maintaining the ViewState

http://www.w3schools.com/aspnet/aspnet_viewstate.asp

When a form is submitted in classic ASP, all form values are cleared. Suppose you have submitted a form with a lot of information and the server comes back with an error. You will have to go back to the form and correct the information. You click the back button, and what happens.......ALL form values are CLEARED, and you will have to start all over again! The site did not maintain your ViewState.
When a form is submitted in ASP .NET, the form reappears in the browser window together with all form values. How come? This is because ASP .NET maintains your ViewState. The ViewState indicates the status of the page when submitted to the server. The status is defined through a hidden field placed on each page with a <form runat="server"> control. The source could look something like this:

<form name="_ctl0" method="post" action="page.aspx" id="_ctl0">
< input type="hidden" name="__VIEWSTATE"
value="dDwtNTI0ODU5MDE1Ozs+ZBCF2ryjMpeVgUrY2eTj79HNl4Q=" />

.....some code

< /form>

post back

 If you want to execute the code in the Page_Load subroutine only the FIRST time the page is loaded, you can use the Page.IsPostBack property. If the Page.IsPostBack property is false, the page is loaded for the first time, if it is true, the page is posted back to the server (i.e. from a button click on a form):