asp.net source code blog

Sometimes you may have strings to represent dates (ex. 20100102 that represents 2010 January 2), here's an example how it can be converted to DateTime:

string dtString = "20100102";

IFormatProvider culture = new CultureInfo("en-EN", false);

DateTime dt = DateTime.ParseExact(dtString, "yyyyMMdd", culture, DateTimeStyles.NoCurrentDateDefault);

Now, if you want to convert DateTime variable to string in the format above, here's an example how it can be done:

String dtNewString = String.Format("{0:dd/MM/yyyy}", dt);

Here's a simple example how you can detect URLs in some text and replace them with html code for hyperlinks:

string someText = "here's a simple text that contains urls in it like http://www.aspnetsource.com or http://aspnetsource.com or http://aspnetsource.com";

// we create a Regex object with pattern to detect URLs
Regex reg = new Regex(@"((http|https|ftp|gopher|telnet|file|notes|ms-help):((//)|(\\\\))*[\w\d:#@%/;$()~_?\+-=\\\.&]*)");

string htmText = reg.Replace(someText, "<a href=\"$1\">$1</a>");

/* now htmlText contains formatted html code with hrefs:

here's a simple text that contains urls in it like <a href="http://www.aspnetsource.com">http://www.aspnetsource.com</a> or <a href="http://aspnetsource.com">http://aspnetsource.com</a> or <a href="http://aspnetsource.com">http://aspnetsource.com</a>

*/

In my work I had to concatenate two byte arrays but,
unfortunately, it seems that there's no elegant way to do
concat of two byte arrays in "C#" :(

I'd offer you a suggestion for doing it,
just copy-paste this simpe function in your project:

public byte[] ConcatByteArrays(byte[] a, int aSize, byte[] b, int bSize)
{
byte[] buff = new byte[aSize + bSize];
for(int i=0; i<aSize; i++)
buff[i] = a[i];
for(int i=0; i<bSize; i++)
buff[i+aSize] = b[i];
return buff;
}