c# - update 2 fields using linq foreach -

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can update 2 fields using linq foreach loop @ once? sample snippet : have userdata name, email, createtime, lastupdatetime fields. have reset createtime , lastupdatetime users.

to update using 2 calls below

users.foreach(x => x.createtime= datetime.now.addmonths(-1)); users.foreach(x => x.lastupdatetime = datetime.now);

instead can in single using linq foreach loop?

well start with, assuming list<t>.foreach, isn't using linq. yes, can create lambda expression using statement body:

users.foreach(x => {     x.createtime = datetime.now.addmonths(-1);     x.lastupdatetime = datetime.now; });

however, may also want use 1 consistent time updates:

datetime updatetime = datetime.now; datetime createtime = updatetime.addmonths(-1);  users.foreach(x => {     x.createtime = createtime;     x.lastupdatetime = updatetime; });

it's not clear why want achieve way though. suggest using foreach loop instead:

datetime updatetime = datetime.now; datetime createtime = updatetime.addmonths(-1);  foreach (var user in users) {     user.createtime = createtime;     user.lastupdatetime = updatetime; }

see eric lippert's blog post on foreach vs foreach more thoughts on this.


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