我有以下下拉列表:
<%@ Page Title="" Language="C#" MasterPageFile="~/myMasterPage.master" AutoEventWireup="true" CodeFile="testdropdown.aspx.cs" Inherits="testdropdown" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" Runat="Server">
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:DropDownList ID="ddlDeliveryAddresses" runat="server"
DataTextField="delAddressShort" DataValueField="delID"
onselecteddindexchanged="ddlDeliveryAddresses_SelectedIndexChanged"
AppendDataBoundItems="True"
AutoPostBack="True">
<asp:ListItem Selected='True' Text='--select--' Value='-1'></asp:ListItem>
</asp:DropDownList>
</asp:Content>
后面的代码如下:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
SqlConnection conn;
SqlCommand comm;
SqlDataReader reader;
conn = new SqlConnection(iceConns.iconn);
comm = new SqlCommand("Customers.sl_DeliverybyBillID", conn);
comm.CommandType = CommandType.StoredProcedure;
comm.Parameters.Add(new SqlParameter("@billID", SqlDbType.Int));
comm.Parameters["@billID"].Value = 160;
conn.Open();
reader = comm.ExecuteReader();
ddlDeliveryAddresses.DataSource = reader;
ddlDeliveryAddresses.DataBind();
reader.Close();
}
}
protected void ddlDeliveryAddresses_SelectedIndexChanged(object sender, EventArgs e)
{
Label1.Text = ddlDeliveryAddresses.SelectedItem.Text;
}
不管我做什么,我都无法填充标签。如果我将databind替换为静态listitem,那么一切都很好!我已经尝试了几乎所有建议,但是没有任何效果(无论如何对我来说都不是!)。
最佳答案
您的代码显示为onselecteddindexchanged
,应为OnSelectedIndexChanged
。
大小写无关紧要,但请注意onselected...
后的多余“ d”