I assume that what you want to do is break the string into it's component parts:
E12 EE731330947CN, Avizo
Becomes
Box.boxName E12
Box.packode EE731330947CN
Box.Status Avizo
If so, then it's pretty easy:
string inp = "E12 EE731330947CN, Avizo";
string[] parts = inp.Split(new char[] { ' ', ',' }, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length == 3)
{
string Box = parts[0];
string PackCode = parts[1];
string Status = parts[2];
}