Shell output problem (reprise)

ok....well i thought i had it down......but alas i was wrong....what i'm aiming to do is read output from a command shell. All the solutions i've seen so far revolved around

sr.ReadToEnd()

where sr is the streamreader of the redirected output from a Process. It turns out that this isn't what i need after all. what i need is something that will read each individual line and ReadToEnd doesn't do that

let me see if i can rephrase my problem....

when you go to a command prompt and get something like

c:\>

you then type something like

c:\> del temp.txt

but if the file is not there to begin with you will get the error

Could Not Find C:\temp.txt

what i want to do is read each line of the process to check whether this error occors and if it does....do something else (like c:\> edit temp.txt ). with ReadToEnd it seems (unless i'm misunderstanding somehow) that the process must be finished before you can do the reading. Hence the problem .... i need to read as the process executes

does anyone get where i'm comming from?

J