多个用户指定ID的实体框架“在哪里”

Question

The user is able to enter a comma separated list of IDs in a searchbox. This then needs to converted to the following SQL:

...
WHERE table.idCol = id1 OR table.idCol = id2 OR table.idCol = id3 ...

Given a string array what EF code do I need to write to produce this? The following doesn't work as it produces ANDs instead

foreach (string idStr in idString.Split(','))
{
    int id = int.Parse(idStr);
    query = query.Where(t => t.idCol == id);
}

Answer 1

Why don't you just use Contains , it will be translated as IN clause :

var idList = idString.Split(',').Select(int.Parse).ToList();

var query = table.Where(x => idList.Contains(x.idCol));