急!! 页面中获取用户控件中ListBox信息时,提示"未将对象引用设置到对象的实例"
用户控件:UserList
public class UserList : System.Web.UI.UserControl
{
public System.Web.UI.WebControls.ListBox j_orilist;
public System.Web.UI.WebControls.DropDownList j_DropDownList;
//System.Web.UI.WebControls.ListBox
public ListBox UserListBox
{
get
{
return j_orilist;
}
}
public DropDownList UserDropDownList
{
get
{
return j_DropDownList;
}
}
.....}
页面中:
UserList userlist=new UserList();
string strusername=userlist.UserListBox.SelectedItem.Text; (提示"未将对象引用设置到对象的实例")
不知道错误在哪里?请指出