Thursday, March 31, 2011

Want to write some code? Get away from your computer!

http://blog.rtwilson.com/want-to-write-some-code-get-away-from-your-computer/

Being away from the computer forces you to run through all of the thoughts in your head – which tends to take longer than getting a computer to compile and run your code (for small code bases at least…). So you don’t tend to make tiny changes and re-run things, you tend to actually think about what the code is doing. Until I did this on the train the other day, I hadn’t actually run a piece of code on paper (that is, written down columns for each of the variables and worked out what each value will be at each stage in the program) since my Computing A-Level exam!

ASP Classic Compiler is an open source project now, Apache License

This project hosts examples, tests and discussions of ASP Classic Compiler. ASP Classic Compiler is based on a VBScript compiler that compiles ASP pages into a .NET executable so that they can run inside the ASP.NET environment.

http://aspclassiccompiler.codeplex.com/license

How to select element by multiple classes in JQuery

$('#a.b.c')

Code example for developing Mobile web app by ASP.NET MVC 3 and jQuery Mobile

Mobile enabled web apps with ASP.NET MVC 3 and jQuery Mobile

Making this application for mobile devices. A single web site will be used for both mobile browsers and desktop browsers. If users are accessing the web app from mobile browsers, users will be redirect to mobile specific pages and will get normal pages if users are accessing from desktop browsers. In this demo app, the mobile specific pages are maintained in an ASP.NET MVC Area named Mobile and mobile users will be redirect to MVC Area Mobile

http://weblogs.asp.net/shijuvarghese/archive/2011/02/25/mobile-enabled-web-apps-with-asp-net-mvc-3-and-jquery-mobile.aspx

Wednesday, March 30, 2011

Where can find ASP.NET Membership database script file?

In Windows .Net Framework folder:

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallMembership.sql

C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallMembership.sql

Routing in ASP.NET WebForms

http://www.west-wind.com/weblog/posts/974489.aspx

protected void Application_Start(object sender, EventArgs e)
{
    RegisterRoutes(RouteTable.Routes);
}

void RegisterRoutes(RouteCollection routes)
{
    routes.MapPageRoute("StockQuote", "StockQuote/{symbol}", "StockQuote.aspx");
");
}

public partial class StockQuote1 : System.Web.UI.Page

{
    protected StockQuote Quote = null;

    protected void Page_Load(object sender, EventArgs e)
    {
        string symbol = RouteData.Values["symbol"] as string;
    }
}

Tuesday, March 29, 2011

Ios, Android, WP7 - who cares

Web browsers will end "War for mobile" eventually
http://jacquesmattheij.com/Ios+Android+WP7+who+cares

The Hundred-year Language

http://www.paulgraham.com/hundred.html
April 2003

Like species, languages will form evolutionary trees, with dead-ends branching off all over. We can see this happening already. Cobol, for all its sometime popularity, does not seem to have any intellectual descendants. It is an evolutionary dead-end-- a Neanderthal language.

........................

Main branches of the evolutionary tree pass through the languages that have the smallest, cleanest cores. The more of a language you can write in itself, the better.

What is REST Services,RESTful

It stands for Representational State Transfer.
Like SOAP web services. It is Lightweight and Human Readable Results
It can be implemented in ASP.NET MVC.

REST vs SOAP Web Services

http://www.petefreitag.com/item/431.cfm

Monday, March 28, 2011

Update: Best ASP.NET websites/blogs

How to prevent multiple shortcut events for JQuery Hotkeys plugin

$(document).bind('keydown', 'ctrl+s', function (e) {

         DoSomethings();

e.preventDefault();

});

preventDefault method in javascirpt

event.preventDefault();

Cancels the event if it is cancelable, without stopping further propagation of the event.

Reference:

https://developer.mozilla.org/en/DOM/event.preventDefault

Sunday, March 27, 2011

The worst program I ever worked on

http://jacquesmattheij.com/The+worst+program+I+ever+worked+on

Saturday, March 26, 2011

Javascript online beautifier

http://jsbeautifier.org/

JQuery Hello world plugin

<div class="Test">
Hello world</div>
<script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.5.js" type="text/javascript">
</script>
<script type="text/javascript">
   (function($)
   {
   $.fn.helloworld = function()
   {
   return this.each(function()
   {
   $('div').css('color', 'red');
   alert('Hello world');
   });
   };
   })(jQuery);
   $('.Test').mouseover(function()
   {
   $('.Test').helloworld();
   });
</script>

Reference:

http://docs.jquery.com/Plugins/Authoring

How to check if string is number in C#

double Num;

bool isNum = double.TryParse(Str, out Num);

if (isNum)

http://rayaspnet.blogspot.com/2011/08/how-to-check-string-is-in-valid-number.html

Friday, March 25, 2011

jQuery Modal Dialog in an ASP.NET page by Fancybox

http://fancybox.net/howto
http://www.msjoe.com/2011/03/jquery-modal-dialog-in-an-asp-net-page/

How to handle Keyboard Shortcuts/hotkey in ASP.NET by JQuery Hotkeys

Download from:

https://github.com/jeresig/jquery.hotkeys

$(document).bind('keydown', 'alt+ctrl+s', function () {

$('#elmentid').trigger('click');

});

ASP.NET Session How To FAQs

http://www.eggheadcafe.com/tutorials/aspnet/c3e1fc0b-3ea0-4955-af1e-2c052a55cd23/aspnet-session-how-to-faqs.aspx

Thursday, March 24, 2011

How to use CSS3 for progress bar

Demo

http://namepk.sinaapp.com/demo/progress.html

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset='UTF-8'>
	<title></title>
	<style>
	#loading-status {
	width: 300px;
	margin-left: 2px;
	border: 1px #669CB8 solid;
	-webkit-box-shadow: 0px 2px 2px #D0D4D6;
	margin-top: 70px;
	height: 20px;
	-webkit-border-radius: 10px;
	background: -webkit-gradient(linear, 0 0, 0 100%, from(#E1E9EE), to(white));
	padding: 1px;
	}
	#process {
	background: -webkit-gradient(linear, 0 0, 0 100%, from(#7BC3FF), color-stop(0.5,#42A9FF), to(#7BC3FF));
	width: 0%;
	height: 100%;
	-webkit-border-radius: 10px;
	/* -webkit-transition: width 1s ease-in-out; */
	-webkit-animation: load 1s ease-in-out infinite;
	}
	@-webkit-keyframes load {
	0% {
	width: 0%;
	}
	100% {
	width: 80%;
	}
	}
	.box {
	height: 20px;
	position: relative;
	background: hsl(0, 0%, 35%);
	-webkit-border-radius: 15px;
	padding: 6px;
	-webkit-box-shadow: inset 0 -1px 1px rgba(255, 255, 255, 0.3);
	width: 300px;
	}
	.box > span {
	display: block;
	height: 100%;
	-webkit-border-top-right-radius: 8px;
	-webkit-border-bottom-right-radius: 8px;
	-webkit-border-top-left-radius: 15px;
	-webkit-border-bottom-left-radius: 15px;
	background-image: -webkit-gradient(
	linear,
	left bottom,
	left top,
	color-stop(0, #63DE4E),
	color-stop(1, #34A702)
	);
	-webkit-box-shadow:
	inset 0 2px 9px rgba(255,255,255,0.3),
	inset 0 -2px 6px rgba(0,0,0,0.4);
	position: relative;
	overflow: hidden;
	}
	.animate > span > span {
	content: "";
	position: absolute;
	top: 0; left: 0; bottom: 0; right: 0;
	background-image:
	-webkit-gradient(linear, 0 0, 100% 100%,
	color-stop(.25, rgba(255, 255, 255, .2)),
	color-stop(.25, transparent), color-stop(.5, transparent),
	color-stop(.5, rgba(255, 255, 255, .2)),
	color-stop(.75, rgba(255, 255, 255, .2)),
	color-stop(.75, transparent), to(transparent)
	);
	z-index: 2;
	-webkit-background-size: 40px;
	-webkit-animation: move 2s linear infinite;
	-webkit-border-top-right-radius: 8px;
	-webkit-border-bottom-right-radius: 8px;
	-webkit-border-top-left-radius: 20px;
	-webkit-border-bottom-left-radius: 20px;
	overflow: hidden;
	}

	@-webkit-keyframes move {
	0% {
	background-position: 0 0;
	}
	100% {
	background-position: 50px 50px;
	}
	}
	</style>
	</head>
	<body>
	<div class="box animate">
	<span style="width: 80%"><span></span></span>
	</div>
	<div id="loading-status">
	<div id="process"></div>
	</div>
	</body>

	</html>

HTTPS is more secure, so why isn't the Web using it?

Can not be cached, cause performance issue.

Perhaps the main reason most of us are not using HTTPS to serve our websites is simply that it doesn't work with virtual hosts. Virtual hosts, which are what the most common cheap Web hosting providers offer, allow the Web host to serve multiple websites from the same physical server—hundreds of websites all with the same IP address. That works just fine with regular HTTP connections, but it doesn't work at all with HTTPS.

There is a way to make virtual hosting and HTTPS work together—the TLS Extensions protocol—but Lafon notes that, so far, it's only partially implemented. Of course that's not an issue for big sites, which often have entire server farms behind them. But until that spec—or something similar—is widely used, HTTPS isn't going to work for small, virtually hosted websites

http://arstechnica.com/web/news/2011/03/https-is-more-secure-so-why-isnt-the-web-using-it.ars

Definitions for ASP.NET Viewstate

ASP.NET view state is the technique used by an ASP.NET Web page to persist changes to the state of a Web Form across postbacks

From:

http://msdn.microsoft.com/en-us/library/ms972976.aspx

ASP.NET page framework uses to preserve page and control values between round trips

http://msdn.microsoft.com/en-us/library/bb386448.aspx

Wednesday, March 23, 2011

How to add JavaScript function before request or after request for ACT Update Panel?

PageRequestManager

Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);

Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);

function BeginRequestHandler(sender, args)

{

var elem = args.get_postBackElement();

ActivateAlertDiv('visible', 'AlertDiv', elem.value + ' processing...');

}

function EndRequestHandler(sender, args)

{

ActivateAlertDiv('hidden', 'AlertDiv', '');

}

http://msdn.microsoft.com/en-us/library/bb311028.aspx

In ASP.NET, ENTER key on a FORM with a single Input Field, will automatically SUBMIT.

This happens in IE, Chrome, but not in Firefox.

Solution: add another hidden input field. Such as:

<div style="display: none">

    <input type="text" name="hiddenText" />

</div>

Reason:

Because IE and Chrome following HTML2.0 Specification exactly.

According to HTML2.0 Specification, 8.2. Form Submission:

When there is only one single-line text input field in a form, the

user agent should accept Enter in that field as a request to submit

the form.

http://tools.ietf.org/html/rfc1866#section-8.2

Tuesday, March 22, 2011

CLEDITOR - JQuery WYSIWYG HTML EDITOR

CLEditor is an open source jQuery plugin which provides a lightweight, full featured, cross browser, extensible, WYSIWYG HTML editor which can be easily added into any web site

Demo
http://premiumsoftware.net/cleditor/

jQuery Mobile CDN

<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0a3/jquery.mobile-1.0a3.min.css" />
<script src="http://code.jquery.com/jquery-1.5.min.js"></script>
<script src="http://code.jquery.com/mobile/1.0a3/jquery.mobile-1.0a3.min.js"></script>

Monday, March 21, 2011

How to find out common element(s) in two generic list by LINQ, LINQ Set Operations

int[] twos = { 2, 4, 6, 8, 10 };

int[] threes = { 3, 6, 9, 12, 15 };

// 6

var intersection = twos.Intersect(threes);

// 2, 4, 8, 10

var except = twos.Except(threes);

// 2, 4, 7, 8, 10, 3, 9, 12, 15

var union = twos.Union(threes);

Understand SQL Injection by code

If put the following string in the SSN text box

' ; DROP DATABASE pubs --

Using the input, the application executes the following stored procedure, which internally executes a similar SQL statement.

SqlDataAdapter myCommand = new SqlDataAdapter(

"LoginStoredProcedure '" +

SSN.Text + "'", myConnection);

The code INJECT into the user's malicious input and generates the following query.

SELECT au_lname, au_fname FROM authors WHERE au_id = ''; DROP DATABASE pubs --'

Reference:

How To: Protect From SQL Injection in ASP.NET

http://msdn.microsoft.com/en-us/library/ff648339.aspx

Sunday, March 20, 2011

How to select value into variable in MS SQL

Declare @RowCount int
set @RowCount = (select COUNT(*) from INFORMATION_SCHEMA.TABLES)
select @RowCount

How to upgrade to Entity Framework 4.1

http://johnpapa.net/silverlight/upgrading-to-entity-framework-4-1-rc/

Entity Framework 4.1 is coming with Code First feature

EF 4.1 includes the new “EF Code First” option that I’ve blogged about several times in the past. EF Code First provides a really elegant and clean way to work with data, and enables you to do so without requiring a designer or XML mapping file. Below are links to some tutorials I’ve written in the past about it:

http://weblogs.asp.net/scottgu/archive/2011/03/19/rc-of-entity-framework-4-1-which-includes-ef-code-first.aspx

Saturday, March 19, 2011

How to register multiple events into one handler in JQuery?

$('#foo').bind('mouseenter mouseleave blur', function() {

$(this).toggleClass('entered');

});

How to translate text in C# by Google Translate service

http://martinnormark.com/translate-text-in-c-using-google-translate-revisited

Goggle reference:
http://research.google.com/university/translate/docs.html

Programmers without computers

programmers need to stand up and think more.
http://www.johndcook.com/blog/2011/02/28/programmers-without-computers/

How to upgrade an ASP.NET MVC 2 Project to ASP.NET MVC 3

ASP.NET MVC 3 can be installed side by side with ASP.NET MVC 2 on the same computer, which gives you flexibility in choosing when to upgrade an ASP.NET MVC 2 application to ASP.NET MVC 3.

To manually upgrade an existing ASP.NET MVC 2 application to version 3, do the following:

Create a new empty ASP.NET MVC 3 project on your computer. This project will contain some files that are required for the upgrade.
Copy the following files from the ASP.NET MVC 3 project into the corresponding location of your ASP.NET MVC 2 project:
- /Scripts/jquery.unobtrusive-ajax.js
- /Scripts/jquery.unobtrusive-ajax.min.js
- /Scripts/jquery.validate.unobtrusive.js
- /Scripts/jquery.validate.unobtrusive.min.js
- /Views/Web.config
If your ASP.NET MVC 2 project contains any areas, copy the /Views/Web.config file to the Views folder of each area.
In both Web.config files in the ASP.NET MVC 2 project, globally search and replace the ASP.NET MVC version. Find the following:
```
System.Web.Mvc, Version=2.0.0.0
```
Replace it with the following:
```
System.Web.Mvc, Version=3.0.0.0
```
In Solution Explorer, delete the reference to System.Web.Mvc (which points to the DLL from version 2), then add a reference to System.Web.Mvc (v3.0.0.0).
Add a reference to System.WebPages.dll and System.Web.Helpers.dll. These assemblies are located in the following folders:
- %ProgramFiles%\ Microsoft ASP.NET\ASP.NET MVC 3\Assemblies
- %ProgramFiles%\ Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies
In Solution Explorer, right-click the project name and then select Unload Project. Then right-click the project name again and select Edit ProjectName.csproj.
Locate the ProjectTypeGuids element and replace {F85E285D-A4E0-4152-9332-AB1D724D3325} with {E53F8FEA-EAE0-44A6-8774-FFD645390401}.
Save the changes, right-click the project, and then select Reload Project.

In the application’s root Web.config file, add the following settings to the assemblies section.

<add assembly="System.Web.WebPages,
Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />

<add assembly="System.Web.Helpers, Version=1.0.0.0, Culture=neutral,
PublicKeyToken=31BF3856AD364E35" />

If the project references any third-party libraries that are compiled using ASP.NET MVC 2, add the following bindingRedirect element to the Web.config file in the application root under the configuration section:

<runtime>
  <assemblyBinding
xmlns="urn:schemas-microsoft-com:asm.v1">
   <dependentAssembly>
  <assemblyIdentity
name="System.Web.Mvc"

publicKeyToken="31bf3856ad364e35"/>
  <bindingRedirect
oldVersion="1.0.0.0-2.0.0.0" newVersion="3.0.0.0"/>
   </dependentAssembly>
  </assemblyBinding>
</runtime>

Reference:

http://www.asp.net/learn/whitepapers/mvc3-release-notes#upgrading

Friday, March 18, 2011

Next ASP.NET version will include important features from MVC

Despite the excitement around MVC, ASP.NET WebForms are still very popular. According to Evonet Consulting, the next major ASP.NETrelease will contain a number of features originally introduced in MVC, including Model Binders, unobtrusive client-side validation, and CSS sprites.

http://www.infoq.com/news/2011/03/WebForms-Next

How to implement TSQL in clause by LINQ, Contains Method of List(Of T)

        string[] countrycode = null;
        countrycode = listofcountrycodes.Split(',');

        dataSource.StateList.Where(s => countryCodes.Contains(s.CountryCode))

How to detect mouse right click paste event in JQuery ?

$('#controlId').bind('paste', null, function(e) {
  if(!e.keyCode){
       /*
         since no key was down at the time of the event we can assume it was
          from the toolbar or right click menu, and not a ctrl+v
       */
    }
});

http://rayaspnet.blogspot.com/2011/01/how-to-implement-textchanged-event.html

Entity framework does not support mapping an int column to Enum

Solutions:
Use a Foreign Key to a reference table and model this with an association (which is completely overkill).

Two ways for Workarounds
http://cticoder.wordpress.com/2008/08/16/using-enums-with-entity-framework/
http://blogs.msdn.com/b/alexj/archive/2009/06/05/tip-23-how-to-fake-enums-in-ef-4.aspx

IE9 CSS3 selector and HTML5 test result

CSS3 Selectors Test:: 100%
http://tools.css3.info/selectors-test/test.html
HTML5:
155 out of 400
http://html5test.com/

IE9 Speed test, V8

IE 9 is better than Firefox, worse than Chrome
http://v8.googlecode.com/svn/data/benchmarks/v6/run.html

Thursday, March 17, 2011

Microsoft Internet Explorer 9 Arrives: 10 Reasons to Use It

http://www.eweek.com/c/a/Enterprise-Applications/Microsoft-Internet-Explorer-9-Arrives-10-Reasons-to-Use-It-851132/

CSS3 Rounded corners in IE9

The border-radius properties enable you to curve border corners by essentially “replacing” the hard corners with a quarter-ellipse and specifying the radii of each ellipse. The properties consist of the following:

border-radius (The value given will specify the radius for all four corners of a box.)
border-bottom-left-radius
border-bottom-right-radius
border-top-left-radius
border-top-right-radius

For example, take a look at the following markup:

border-radius: 100px 66.66px 200px 50px;
border: 10px blue double;
padding: 24px;
width: 400px;height: 125px;

Reference:
http://msdn.microsoft.com/en-us/ie/ff468705#_CSS3_BG_Borders

Wednesday, March 16, 2011

How to check if an argument is not a number in Javascript

isNaN function

Evaluates an argument to determine if it is not a number.

isNaN("string") //returns true

isNaN("12") //returns false

https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/isNaN

Null-coalescing operator, Double question mark( ??) in C#

int? x = null;

Console.WriteLine(x?? 100);

Equal:

var test = (x == null) ? x : 100;

Reference:

http://msdn.microsoft.com/en-us/library/ms173224.aspx

How to show a heavy-data gridview not in page load, to prevent freezing page?

- Put gridview into a Update panel

<asp:UpdatePanel ID="UpdatePanelMemberList" runat="server" UpdateMode="Conditional">

    <contenttemplate>

         <asp:GridView  runat="server"/>

    </contenttemplate>

</asp:UpdatePanel>

- Add a hidden field to let client side javascript to click button for showing gridview

 <asp:HiddenField ID="H1" runat="server" />

-         
After page loaded in html trigger button click
event

    $(document).ready(function () {

        var hidenv = $("#<%=H1.ClientID %>").val();

        if (hidenv != 'show') return;

         $("#<%=Submit.ClientID %>").trigger('click');

});

How to show progress in ASP.NET WebForms by UpdatePanel

var prm = Sys.WebForms.PageRequestManager.getInstance();

prm.add_initializeRequest(prm_InitializeRequest);

prm.add_endRequest(prm_EndRequest);

function prm_InitializeRequest(sender, args) {

var panelProg = $get('divImage');

panelProg.style.display = '';

}

function prm_EndRequest(sender, args) {

var panelProg = $get('divImage');

panelProg.style.display = 'none';

}

</script>

<asp:UpdatePanel ID="UpdatePanel1" runat="server">

<asp:Image ID="img1" runat="server" ImageUrl="~/images/progress.gif" />

Processing...

</div>

<br />

<asp:Button ID="btnInvoke" runat="server" Text="Click"

onclick="btnInvoke_Click" />

</ContentTemplate>

</asp:UpdatePanel>

Pages

Thursday, March 31, 2011

Wednesday, March 30, 2011

Tuesday, March 29, 2011

Monday, March 28, 2011

Sunday, March 27, 2011

Saturday, March 26, 2011

Friday, March 25, 2011

Thursday, March 24, 2011

Wednesday, March 23, 2011

Tuesday, March 22, 2011

Monday, March 21, 2011

Sunday, March 20, 2011

Saturday, March 19, 2011

ASP.NET MVC 3 can be installed side by side with ASP.NET MVC 2 on the same computer, which gives you flexibility in choosing when to upgrade an ASP.NET MVC 2 application to ASP.NET MVC 3.

Friday, March 18, 2011

Thursday, March 17, 2011

Wednesday, March 16, 2011

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