There is a part of a web admin console that we have that displays a MAC address of a device, which our network admin routinely punches in value by value into Calculator and converts it to a decimal format:
…and that becomes:
He has to do that because there is another utility that expects the decimal format of the MAC address.
AND, this has to be done each time we add a new device/customer/end point on our network.
I am using c# to convert the MAC address to decimal in this example. .Net provides some quick-and-easy ways to convert from hex to decimal and this is ideal when converting a MAC address.
There are a number of approaches on how to solve this kind of issue, but I chose one that doesn’t require (much of) a user interface. The only visible aspect of the program is a task tray icon that, when double-clicked, converts the contents of the clipboard from hex to decimal.
I chose this approach because, for the most part, we’re dealing with one (or few) of these conversions at a time. He can copy, double-click and paste into the other app without having to introduce a third, windowed interface into the mix.
Here’s the meat of the method that does the work:
// grab whatever's on the clipboard
// and try to break it apart
string input = Clipboard.GetText();
string parts = input.Split(':');
// convert the data to integers
// and build a string
StringBuilder sb = new StringBuilder();
foreach (string part in parts)
// need to drop that last . from the
// string and set the clipboard
string result = sb.ToString();
Clipboard.SetText(result.Substring(0, result.Length - 1));
// nothing fancy here, anything goes
// wrong and we bail...
Put that into a double-click event handler for a NotifyIcon and you’re sailing.