Question

I have a doubt, sometime I made this conversion from DataTable to List<T>:

  List<EDog> lstDogs = (from drRow in dsDogs.Tables[0].AsEnumerable()
                        select new EDog()
                        {
                            intIdDog = drRow.Field<int>("IdDog"),
                            intIdOwner = drRow.Field<int?>("IdOwner"),
                            intAge = drRow.Field<int>("Age"),
                            strName = drRow.Field<string>("Name")
                       }).ToList();

This worked fine, but now I’m thinking about doing it generic, so that any type of DataSet could be converted to a strongly typed list.

How could I make it generic? maybe a delegate surrounding this part and creating the object?

new EDog()
{
    intIdDog = drRow.Field<int>("IdDog"),
    intIdOwner = drRow.Field<int?>("IdOwner"),
    intAge = drRow.Field<int>("Age"),
    strName = drRow.Field<string>("Name")
}

I tried it but get an error:

select (lambda) expected....

Any suggestion?

The reason why I need this is because each DataRow of the result, needs to be converted to an Entity for better manipulation.

Answer 1

Is something like this what you are looking for?

public static List<T> ConvertDS<T>(DataSet ds, Converter<DataRow, T> converter)
{
    return
        (from row in ds.Tables[0].AsEnumerable()
         select converter(row)).ToList();
}