asp.net 三层架构中遇到的IEnumerable 问题，请高手帮忙，急！！

[qq_27320995]

我在数据层里面是这样写的：
private static GenraName ToModel(DataRow row)
{
GenraName model = new GenraName();
model.Isid = (int)row["Isid"];
model.db_GenraName = (string)row["db_GenraName"];
model.db_GID = (int)row["db_GID"];
return model;
}

public IEnumerable<GenraName> ListAll()
{
List<GenraName> list = new List<GenraName>();
DataTable dt = SqlHelper.ExecuteDataTable("SELECT * FROM GenraName");
foreach (DataRow row in dt.Rows)
{
list.Add(ToModel(row));
}
return list;
}

现在我想在表现层调用 IEnumerable里面的数据到DropDownList控件中，如何将IEnumerable里面的db_GenraName,db_GID绑定到DropDownList中，请高手帮忙一下，在此先谢过了！

[k767474055]

DropDownList ddList = new DropDownList();
            ddList.DataSource = ListAll();
            ddList.DataTextField = "db_GenraName";
            ddList.DataValueField = "db_GID";
            ddList.DataBind();

[qq_27054811]

你这是何苦呢，查出来一个datatable，封装成对象添加到集合， 直接把datatable绑定到DropDownList，用数据字段名跟楼上一样写，