Question

So I’m trying to use FindAll to return a list of objects that match. It works great when I only use one condition, for example

patientstatus = statuslist.FindAll(delegate(StatusReader.onestatus p1)
{
   return p1.WL_ID == patlist[i].wl_id;
});

But I would like to use multiple conditions, some of which contain if statements and I can’t figure out how. It seems like the format needs to have a return statement, and the example from Microsoft (http://msdn.microsoft.com/en-us/library/fh1w7y8z.aspx) only uses one condition.

I could either have multiple FindAll methods for each condition, or just make a loop that scans through all the values myself, but there’s got to be an obvious thing I’m missing, right?

Answer 1

I’m not quite sure what “if loops” are, but you can always just stitch them together:

patientstatus = statuslist.FindAll(delegate(StatusReader.onestatus p1)
{
   if(p1.WL_ID != patlist[i].wl_id)
       return false;

   if(otherStuff != 5)
       return false;

   for(var x in p1.stuff)
       if(x == 7)
           return false;

   return true;
});