linq - How to add a extra value to the query in c# -

i have query this

var values = projectcontext.controloptions.where(i => i.id == id).select(i => new {            i.value         }).tolist(); 

now values contains 4 records want add 2 more records like

  values.insert(0, new { "select" });   values.add("addnew"); 

but showing error. i.value varchar field in database.

how can add 2 records in list without field.

you selecting anonymous types. can add object of type matching names of properties , types, this:

var values = new[]{ new options{value = 666, id = 5}} //array demo purposes                 .where(i => i.id == 5)                 .select(i => new {                               value = i.value.tostring()                 })                 .tolist();  values.add(new {value = "select"});  values.insert(0, new {value = "addnew"}); 

now values contain 3 object of anonymous type (one property value of type string) , can printed as

addnew  666  select  

consider creating new custom class , using in select projection, this:

class mycustomclass {     public string value { get; set; } } 

and create object in select

list<mycustomclass> values = new[]{ new options{value = 666, id = 5}}                 .where(i => i.id == 5)                 .select(i => new mycustomclass {                               value = i.value.tostring()                     })                 .tolist();  values.add(new mycustomclass { value = "select"});               values.insert(0, new mycustomclass { value = "addnew"}); 

now list of named type list<mycustomclass> , elements can added , removed named classes