Question

尝试将DataTable转换为POCO列表。在StackOverflow上找到了该主题的一些答案，我认为应该是O.K.但我没有得到正确的结果。结果是一个包含五个项目的空列表。因此，没有从DataRow到POCO对象的映射。有什么想法可能是错的吗？

AutoMapper是版本6.1.1

AutoMapper.Data版本1.0.0

class Program
{
    static void Main( string[] args )
    {
        var config = new MapperConfiguration( cfg =>
        {
            cfg.CreateMissingTypeMaps = true;
            cfg.CreateMap<IDataReader, Person>();
        } );
        var mapper = config.CreateMapper();

        DataTable tbl = DataGenerator.MyPersons();

        var result = mapper.Map<List<Person>>( tbl.CreateDataReader() );
    }
}

public static class DataGenerator
{
    public static DataTable MyPersons()
    {
        DataTable myPersonssDataTable = new DataTable();
        myPersonssDataTable.Columns.Add( new DataColumn()
        {
            ColumnName = "FirstName",
            DataType = typeof( string )
        } );
        myPersonssDataTable.Columns.Add( new DataColumn()
        {
            ColumnName = "LastName",
            DataType = typeof( string )
        } );
        myPersonssDataTable.Columns.Add( new DataColumn()
        {
            ColumnName = "DateOfBirth",
            DataType = typeof( DateTime )
        } );
        myPersonssDataTable.Columns.Add( new DataColumn()
        {
            ColumnName = "JobTitle",
            DataType = typeof( string )
        } );
        myPersonssDataTable.Columns.Add( new DataColumn()
        {
            ColumnName = "TakenName",
            DataType = typeof( string )
        } );
        myPersonssDataTable.Columns.Add( new DataColumn()
        {
            ColumnName = "IsAmerican",
            DataType = typeof( bool )
        } );

        myPersonssDataTable.Rows.Add( new object[] { "Lenny", "Belardo", new DateTime( 1971, 3, 24 ), "Pontiff", "Pius XIII", true } );
        myPersonssDataTable.Rows.Add( new object[] { "Angelo", "Voiello", new DateTime( 1952, 11, 18 ), "Cardinal Secretary of State", "", false } );
        myPersonssDataTable.Rows.Add( new object[] { "Michael", "Spencer", new DateTime( 1942, 5, 12 ), "Archbishop of New York", "", true } );
        myPersonssDataTable.Rows.Add( new object[] { "Sofia", "(Unknown)", new DateTime( 1974, 7, 2 ), "Director of Marketing", "", false } );
        myPersonssDataTable.Rows.Add( new object[] { "Bernardo", "Gutierrez", new DateTime( 1966, 9, 16 ), "Master of Ceremonies", "", false } );


        return myPersonssDataTable;
    }
}

public class Person
{
    public string FirstName { get; set; }

    public string LastName { get; set; }

    public DateTime DateOfBirth { get; set; }

    public string JobTitle { get; set; }

    public string TakenName { get; set; }

    public bool IsAmerican { get; set; }
}

Answer 1

您忘记添加DataReader映射。

cfg.AddDataReaderMapping();

然后您的代码应该类似于：

...
var config = new MapperConfiguration(cfg =>
            {
                cfg.AddDataReaderMapping();
                cfg.CreateMissingTypeMaps = true;
                cfg.CreateMap<IDataReader, Person>();
            });
...

我希望它有所帮助。

Automapper将DataTable映射到POCO列表

1 个答案: