使用linq填充包含单词的列表

Question

这是我的清单：

List<ActionType> actionTypeList = new ActionTypeLogic(ApplicationType.Web).GetAllActionTypes();

我想用actionTypeList只有使用Linq的单词（完整，新的，仍然）来填充下拉列表

Answer 1

你的意思是

string[] words = new[] {"complete", "new", "still"};
actionTypeList.Where(x => words.Contains(x.Word)).ForEach(x => myDropDown.Items.Add(new ListItem(x.Word, x.Value)));

List.ForEach method不是真正的LINQ，但它适合这种情况。

否则，我恳请您更详细地说明您的问题。

Answer 2

这个怎么样？

 new ActionTypeLogic(ApplicationType.Web).GetAllActionTypes().Select(x => x.MyWord).ToList();

Answer 3

您的代码应该是这样的：

string[] words = new []{"new", "complete", "still"}; 
dropDownList.DataSource = actionTypeList.Where(at=>words.Contains(at.SomeField)).Select(at=> new {at.SomeField, at.SomeOtherField});
dropDownList.DataTextField = "some title for first field";
dropDownList.DataValueField = "some title for second field";
dropDownList.DataBind();