If you are receiving the A potentially dangerous Request.Form value was detected from the client error while a PostBack occurs (submitting a form, for instance) it is most likely because in the PostBack content, there are HTML or HTML-like tags. This is ASP.NET’s defense mechanism that prevents the users of a website to try and […]
Get the path of the ASP.NET web application that is currently running
You can easily retrieve the path to the running ASP.NET application, using Request.PhysicalApplicationPath: If the web application is located in C:\Inetpub\wwwroot\WebApplication1, the string AppPath will contain C:\Inetpub\wwwroot\WebApplication1
How to remove white (blank) space from a string
Using the Replace() method you can easily replace the white space from a string with any character you want, or totally remove it. In the following example the white space from the string is removed: This will result in Anthem containing the string StarSpangledBanner.However you can replace the spaces with any character you want, such […]
What is the difference between Windows Authentication and SQL Authentication?
If you are new to the Microsoft SQL Server environment, you probably encountered the possibility to choose between Windows Authentication and SQL Authentication. SQL Authentication SQL Authentication is the typical authentication used for various database systems, composed of a username and a password. Obviously, an instance of SQL Server can have multiple such user accounts […]
How do I get the visitor’s IP address?
There are two possible ways, either using: or using Furthermore there is information that the below line retrieves the actual IP address and not the Proxy: However this hasn’t been tested yet.
How to get a list of SQL Server databases
There are multiple ways of getting a list of the SQL Server databases, the easiest one is to execute the sp_databases stored procedure, like in the example below: Don’t forget to change the connection string to match your server details (IP, userid and password).
A list of keys and the JavaScript char codes they correspond to
This table is especially useful for those who want to capture the key press event in the browser window. These are the char codes JavaScript uses, and the keys they bind to: Char Key Name 8 Backspace 9 Tab 13 Enter 16 Shift 17 Ctrl 18 Alt 19 Pause 20 Caps Lock 27 Escape 33 […]
How to pop up the Print dialog from a web page
You can very easily pop up the Print dialog using a JavaScript call to a function. The following code works in all major browsers, including Internet Explorer and Firefox:
How to improve the performance of your for loops
Instead of the typical: Use: Because instead of checking the length of the array each loop and comparing it to i, it stores it in a variable arrLen, which is then compared at each loop with i. This saves a few milliseconds, since checking the array length requires slightly more processing power.
How to have PHP show the errors within the current script
Before the PHP code starts, add the following lines: These two lines set script-wide variables that will allow the errors in your current script to output to screen.