LINQ join two DataTables

Hi I have a problem joining two DataTables using LINQ. Tables have columns like this:

table1        table2
ID, name       ID, stock
1, item1       1, 100
2, item2       3, 50
3, item3

I used linq to join like this:

DataTable dtResult = new DataTable();
dtResult.Columns.Add("ID", typeof(string));
dtResult.Columns.Add("name", typeof(string));
dtResult.Columns.Add("stock", typeof(int));

var result = from dataRows1 in table1.AsEnumerable()
             join dataRows2 in table2.AsEnumerable()
             on dataRows1.Field<string>("ID") equals dataRows2.Field<string>("ID")

             select dtResult.LoadDataRow(new object[]
             {
                dataRows1.Field<string>("ID"),
                dataRows1.Field<string>("name"),
                dataRows2.Field<int>("stock"),
              }, false);
result.CopyToDataTable();

Problem is, result only shows IDs which are in the table2.

dtResult
ID, name, stock
1, item1, 100
3, item3, 50

I need to show also the missing items. This is the wanted result:

dtResult
ID, name, stock
1, item1, 100
2, item2, 0  //Prefer if it is "0", otherwise can be left "null"
3, item3, 50

I believe I should do left outer join, but I do not have enough knowledge about linq. Help appreciated. Thank you!