Finding HTML controls from ASP.NET

Here is the article that says ins and outs of this issue.

http://www.asp.net/master-pages/tutorials/control-id-naming-in-content-pages-cs

** I believe when there are so many quality tutorials over the web, I do not really need to write one of my own unless the topic is something unique**

ASP.NET: Check a file for its MIME type.

If you want to check a file file for its MIME type, this is the link that tells you how to do it. I used this link when I checked MIME type of a file with ASP.NET file uploader tool.

http://tiredblogger.wordpress.com/2008/04/07/verifying-extensions-and-mime-types-of-fileupload/

** I believe when there are so many quality tutorials over the web, I do not really need to write one of my own unless the topic is something unique**

ASP.NET : How to use customvalidator with a file upload tool for client side validation

We really do not want to validate in the server side because it makes the server busy.
So a good approach is to validate in the client side using javascript. Here is a good tutorial that does it:

http://www.beansoftware.com/ASP.NET-FAQ/FileUpload-Validation.aspx

** I believe when there are so many quality tutorials over the web, I do not really need to write one of my own unless the topic is something unique**

Javascript: split method can be used to split based on string or regular expression.

If you want to split a string based on another string, this how you do it:
str.split(" ");

If you want to split a string based on a reges, this how you do it:
str.split(/\s/);

\s is a reges which is used for any space character like space,\n,\t or \r.

MySQL: How to search a value in the whole table.

If you want to search a value in the whole table:

1) You have to enable full text indexing on the columns.
2) Column types have to text/char/varchar.
3) Search by the MATCH() AGAINST() functions.
4) You cannot match text having length less than 4. There is a work around to it. I'll write about that later.

Details can be found here:

http://dev.mysql.com/doc/refman/5.0/en/fulltext-natural-language.html