将SQL Server ROWVERSION放入System.Data.Linq.Binary属性时，出现System.InvalidCastException

Question

我正在使用IDataReader从SQL Server DB中选择所有数据库，其中包含具有数据类型ROWVERSION的Version列，这是我的代码：

ItemDetail.cs

private Binary _version;
public Binary Version
{
    get { return _version; }
    set { _version = value; }
}

public ItemDetails(int ItemID, string AddedBy, DateTime AddingDate, 
  string LastUpdateBy, DateTime LastUpdateDate,Binary Version)
{
    this.ItemID = ItemID;
    this.AddedBy = AddedBy;
    this.AddingDate = AddingDate;
    this.LastUpdateBy = LastUpdateBy;
    this.LastUpdateDate = LastUpdateDate;
    this.Version = Version;
}

ItemProvider.cs

protected virtual ItemDetails GetItemFromReader(IDataReader Reader)
{
    return new ItemDetails(
       (int)Reader["ItemID"],
       Reader["AddedBy"].ToString(),
       (DateTime)Reader["AddingDate"],
       Reader["LastUpdateBy"].ToString(),
       (DateTime)Reader["LastUpdateDate"],
       (byte[])Reader["Version"]);
}
protected virtual List<ItemDetails> GetItemCollectionFromReader(IDataReader Reader)
{
    List<ItemDetails> Items = new List<ItemDetails>();
    while (Reader.Read())
    {
        Items.Add(GetItemFromReader(Reader));
    }
    return Items;
}

我有

GetItemFromReader（IDataReader Reader）中位于（byte []）Reader [“ Version”]）的System.InvalidCastException

我怎样才能解决这个问题？ 谢谢

Answer 1

在各处浏览许多帖子后，我找到了解决方案：

ItemProvider.cs替换为：

(byte[])Reader["Version"])

有：

new Binary((byte[])Reader["Version"])