C＃如何使用动态列名称从另一个List <>创建列的List <>

Question

Here the scenario:

1. I load date from db and got a List <productModel> products - this one have 80 columns...
2. and I have DataTable productsColumnsNames where the User can definite witch columns want to see later in DataGrid.
3. Everything happens dynamically so here is my problem... for example the User choose col4, col7, col8, col26, col55 (columns name) how I can get the result in new or the List?

I reading a lot about this online I sow couple of different solusions but not one working with my problem...
One of solutions is this one (come from other example for for ListView) and of course don´t working with List but will be great is possible to modified for my code

var columnNames = new List<string> { colName1, colName3, colName3 };

var columnsToDelete = productsa.Where(c => !columnNames.Contains(c.Name));

foreach (var column in columnsToDelete)
{
    ResultsLogTab_ListView.Columns.Remove(column);
}

Answer 1

You are filtering the products list using the column names. You should be filtering the products list only if you want to exclude certain products.

In this case, you can create a new list with only the required columns and copy from the first list to second for all rows. You can also use automapper to map the two lists, but the second list needs to be defined first.