Concatenate Or Mid in a template Fieild

Question

Hi all.

 

I'm connecting to an iSeries machine where the date looks like the following. "1210311"

 

So I wish to use a template field and use Simlar to =Concatonate Mid(Date,6,2) + "/" + Mid(Date,4,2) + "/" etc etc.

I know how to add two fields together with

 

<%# Convert.ToInt32(Eval("Field1"))+Convert.ToDouble(Eval("Field2")) %> for example.

 

How can I use Concatenate and Mid or is there another way?