Search list of objects based on object variable

Question

I have a list of objects. These objects have three variables, ID, Name, & value. There can be a lot of objects in this list, and I need to find one based on the ID or Name

Answer 1

List<objec> TextPool = new List<objec>();
objec found = TextPool.FirstOrDefault(item => item.Name == "test");
if (found != null) found.value = "Value";

If you are going to perform many lookups, you could cache the results in multiple Dictionary<> instances (or Lookup<> instance if keys are not unique).

Answer 2

var find = TextPool.FirstOrDefault(x => x.Name == "test");
if (find != null)
{
    find.Name = "Value";
}

Answer 3

Sounds like a job for LINQ!

var matchedObject =
   from t in TextPool
   where t.UName == "test"
   select t;

This is assuming your search is defined in code. If your code is driven by the UI, you may simply need to do a linear iteration. To search all possible attributes, without indexing, it isn't going to get any faster.

[ Edit: Was beaten to the punch, but leaving this up as an example of a different syntax, plus a link ]

Answer 4

You could use LINQ to find it, then change the element directly:

var item = TextPool.FirstOrDefault(o => o.Name == "test");
if (item != null)
       item.value = "Value";

If you wanted to change all elements that match, you could, potentially, even do:

TextPool.Where(o => o.Name == "test").ToList().ForEach(o => o.value = "Value");

However, I personally would rather split it up, as I feel the second option is less maintainable (doing operations which cause side effects directly on the query result "smells" to me)...