How to get mac address in string format(actual format )

Question

How can we get MAC Address in asp.net

I have seen some articles and with the help of those article i can get mac address
but it gets address in "00114313D615" this format

but actual format is like this

"00-11-43-13-D1-65"

so how can i get mac address in actual format which is connected with internet

because in 1 system multiple Card can be used

Vulpes · Answer

If it's just a case of manipulating the string to insert the dashes then this should work: string mac1 = 00114313D165; System.Text.StringBuilder sb = new System.Text.StringBuilder(mac1); for(int i = sb.Length - 2; i >= 2; i -= 2) { sb.Insert(i'-'); } string mac2 = sb.ToString(); Console.WriteLine(mac2); // 00-11-43-13-D1-65