XXX对象无法强制转换成“System.Data.DataRowView”2天了还没解决
在3层结构中我定义了2个类
实体类
[Serializable]
public class CartItemInfo
{

private string name;

/// <summary>
/// 构造方法，初始化商品的各个属性
/// </summary>
/// <param name= "name "> 名称 </param>

public CartItemInfo(string name)
{
this.name = name;
}


public string Name
{
get { return name; }
}

业务类
[Serializable]
public class Cart
{

private Dictionary <string, CartItemInfo> cartItems = new Dictionary <string, CartItemInfo> ();

public ICollection <CartItemInfo> CartItems
{
get { return cartItems.Values; }
}

用户层里面的Repeater控件的数据绑定方法为
private void BindCart()
{
ICollection <CartItemInfo> cart = Cart.CartItems;
if (cart.Count > 0)
{
repShoppingCart.DataSource = cart;
repShoppingCart.DataBind();
PrintTotal();
//plhTotal.Visible = true;
}
}

现在的问题是我要在Repeater的OnItemDataBound事件中执行转换就提示CartItemInfo对象不能强制转换为“System.Data.DataRowView”

protected void repShoppingCart_OnItemDataBound(object source,RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{

DataRowView rowv = (DataRowView)e.Item.DataItem
}


[解决办法]
sorry， it 's all my fault.


// ...
ICollection <CartItemInfo> cart = Cart.CartItems; // > > >
if (cart.Count > 0)
{
repShoppingCart.DataSource = cart; // > > > the type of the item in the datasource is CartItemInfo
// ...


So,

DataRowView rowv = (DataRowView)e.Item.DataItem

> > >

CartItemInfo cartItem = e.Item.DataItem as CartItemInfo;
if(cartItem != null) {
// ...
}


报错：CartItemInfo对象不能强制转换为“System.Data.DataRowView”
==========
Where is from your“System.Data.DataRowView”？ It 's CarItemInfo.