Question

    NetworkInterface[] arr = NetworkInterface.GetAllNetworkInterfaces();

    foreach (NetworkInterface item in arr)
    {
        PhysicalAddress mac = item.GetPhysicalAddress();
    }

It returns the value of 00E0EE00EE00 whereas I want it to display something like 00:E0:EE:00:EE:00 but i need to use .Net 4

any ideas ?

Answer 1

You can use String.Insert method of string class to add :

string macAddStr = "00E0EE00EE00";
string macAddStrNew = macAddStr;
int insertedCount = 0;
for(int i = 2; i < macAddStr.Length; i=i+2)  
   macAddStrNew = macAddStrNew.Insert(i+insertedCount++, ":");

//macAddStrNew will have address 00:E0:EE:00:EE:00