【已确认+代码贡献勋章】DropDownList一个令人困惑的BUG - FineUI 官方论坛

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test.aspx.cs" Inherits="EmptyProjectNet40_FineUI.Test" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body>
<form id="form1" runat="server">
<f:PageManager ID="PageManager1" runat="server" />
<f:Form ID="Form2" runat="server" ShowBorder="false" ShowHeader="false" Width="200px">
<Rows>
<f:FormRow ID="FormRow1" runat="server">
<Items>
<f:DropDownList ID="ddlLB" runat="server" Label="商品类别" AutoPostBack="true" OnSelectedIndexChanged="ddlLB_SelectedIndexChanged"></f:DropDownList>
</Items>
</f:FormRow>
<f:FormRow ID="FormRow2" runat="server">
<Items>
<f:DropDownList ID="ddlSP" runat="server" Label="商品名称"></f:DropDownList>
</Items>
</f:FormRow>
</Rows>
</f:Form>
</form>
</body>
</html>

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using System;
using System.Collections.Generic;
using System.Linq;
using FineUI;
namespace EmptyProjectNet40_FineUI
{
public class SP
{
public int SPID { get; set; } //商品ID
public string SPLB { get; set; } //商品类别
public int SPSL { get; set; } //商品数量
public string SPMC { get; set; } //商品名称
}
public partial class Test : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
FillSPLB();
FillSPMC();
}
}
private List<SP> GetListSP()
{
List<SP> list = new List<SP>();
list.Add(new SP { SPID = 1, SPLB = "蔬菜", SPMC = "白菜", SPSL = 10 });
list.Add(new SP { SPID = 2, SPLB = "蔬菜", SPMC = "青菜", SPSL = 20 });
list.Add(new SP { SPID = 3, SPLB = "蔬菜", SPMC = "萝卜", SPSL = 30 });
list.Add(new SP { SPID = 4, SPLB = "蔬菜", SPMC = "青椒", SPSL = 40 });
list.Add(new SP { SPID = 5, SPLB = "蔬菜", SPMC = "黄瓜", SPSL = 50 });
list.Add(new SP { SPID = 6, SPLB = "水果", SPMC = "苹果", SPSL = 10 });
list.Add(new SP { SPID = 7, SPLB = "水果", SPMC = "香蕉", SPSL = 20 });
list.Add(new SP { SPID = 8, SPLB = "水果", SPMC = "梨子", SPSL = 30 });
list.Add(new SP { SPID = 9, SPLB = "水果", SPMC = "桃子", SPSL = 40 });
list.Add(new SP { SPID = 10, SPLB = "水果", SPMC = "杨梅", SPSL = 50 });
return list;
}
private void FillSPLB()
{
var linq = GetListSP().Select(t => t.SPLB).Distinct();
ddlLB.Items.Clear();
foreach (var item in linq)
{
ddlLB.Items.Add(new ListItem(item.ToString(), item.ToString()));
}
}
private void FillSPMC()
{
string _SPLB = this.ddlLB.SelectedValue;
List<SP> list = GetListSP().Where(t => t.SPLB == _SPLB).ToList<SP>();
this.ddlSP.Items.Clear();
foreach (SP sp in list)
{
//这样添加就出现问题
ddlSP.Items.Add(new ListItem(sp.SPMC, sp.SPSL.ToString()));
//这样添加就没有问题
//ddlSP.Items.Add(new ListItem(sp.SPMC, sp.ID.ToString()));
}
ddlSP.SelectedIndex = 0;
}
protected void ddlLB_SelectedIndexChanged(object sender, EventArgs e)
{
FillSPMC();
Alert.ShowInTop(ddlSP.SelectedItem.Text);
}
}
}

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