:
var localDt = new DataTable();
//
var keyword=string.Empty;
1:
var list = localDt.AsEnumerable().Select(x => x["****"].ToString()).ToList();
2:
var list = localDt.AsEnumerable().Select(x => new {
id="",
name=""
}).ToList()
3:
var rows = localDt.AsEnumerable().Select(string.Format("****='{0}'", keyword));
4:
var data=new List();
localDt.AsEnumerable().Where(x => data.Contains(x["GUID"].ToString())).AsDataView();
localDt.AsEnumerable().Where(x => x["GUID"].ToString().Contains(keyword)).AsDataView();