c# - What's the difference between Process[] and Process()[] -


i doing research pattern scanner came problem.

the pattern scanner saw needed handler of process way i'm doing 

process[] p = process.getprocessesbyname("pname");

doesn't have p.handle , went msdn there says have. why mine doesn't?

what difference between 2 lines of code?

process p = process.getprocessesbyname("pname")[0]; process[] p = process.getprocessesbyname("pname");

this gets first process has name of "pname":

process p = process.getprocessesbyname("pname")[0];

note cause "index out of bounds" exception if there aren't any.

this gets list (or array, actually) of processes have name of "pname":

process[] p = process.getprocessesbyname("pname");

note won't cause exception if there aren't any; it'll return empty array.

with latter, can index former, if want first match:

process[] p = process.getprocessesbyname("pname"); if (p.length > 0) {     process process = p[0];  //get first 1 } else {     log("no such process!"); }

or (the way it) use linq:

process p = process.getprocessesbyname("pname").firstordefault(); if (p != null)  {     //do process }

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