为什么这样增加DropDownList值没效果
我想自己设定下拉列表中的选项，可是列表始终是空白地，哪里问题？
sub show_fenlei
Dim connstr As String = ConfigurationSettings.AppSettings( "ConnectionString ")
Dim queryString As String = "select id,mingcheng from lanmu where fulei = 0 order by paixu "
Using connection As New OdbcConnection(connstr)
Dim command As New OdbcCommand(queryString, connection)
connection.Open()
Dim reader As OdbcDataReader = command.ExecuteReader()
While reader.Read()
fenlei.Items.Insert(0, new ListItem(reader.getString(0), reader.getString(1)))
End While
reader.Close()
End Using
end sub
....
<asp:DropDownList ID= "fenlei " runat= "server "> </asp:DropDownList>
<%call show_fenlei%>
[解决办法]
1.有没有查询到数据?2.还是查询到了数据reader.getString(0)为空?
[解决办法]
用dr[ "ColumnName "]
