"That's the exact issue that I'm going through right now. I take it a test condition would consist of if else statement right? Sorry if my question seems elementary, I'm still learning the ins and outs of C#."
Yes:
string dataCustodian = drItem["DataCustodian"].ToString();
string[] fullName = dataCustodian.Split(' ','/');
if (fullName.Length >= 2)
{
string firstName = fullName[0];
string lastName = fullName[1];
...