Vb.net 将详细信息视图与类对象绑定

如何绑定details视图并返回class对象

Dim _obj As New NewRequestDetailsBL

_obj = NewRequestDetailsBL.SelectRequestDetails(Session("requestid"), 
Session("contactid"))
dvAdmin1.DataSource = _obj ' this line is giving the error
dvAdmin1.DataBind()

错误：

System.InvalidOperationException: Data source is an invalid type.  
It must be either  an IListSource, IEnumerable, or IDataSource.

---

错误包含您需要的所有信息

它必须是或

您的类必须至少实现其中一个接口，然后才能将

DataSource

设置为

NewRequestDetailsBL

类的实例