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

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>

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