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ASP.Net에서 jQuery를 사용하여 AJAX 계단식 DropDownList를 사용하려고합니다. 하지만 내가 처음 드롭 다운 목록 (ddl_il)을 선택하면 jquery로 두 번째 Dropdownlist에 도달 할 수 없으며 jquery 코드에 대한 내 문제는 무엇인지 null로 오류가 발생합니까? 어떻게 해결할 수 있습니까?
JQuery AJAX 다중 계단식 드롭 다운 목록 select가 probl을로드하지 않습니다.
Default.aspx를
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="JS/jquery-1.3.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function() {
$("#loaderGif1").hide();
$("#loaderGif2").hide();
$("#ddl_ilce").html("<option value=''>Önce İl Seçiniz</option>");
$("#ddl_semt").html("<option value=''>Önce İlçe Seçiniz</option>");
$("#ddl_il").change(function() {
ilChange();
})
$("#ddl_ilce").change(function() {
ilceChange();
})
});
function ilChange() {
$("#loaderGif1").show();
$("#ddl_ilce").attr("disabled", "true").html("<option value=''>Önce İl Seçiniz</option>");
$("#ddl_semt").attr("disabled", "true").html("<option value=''>Önce İlçe Seçiniz</option>");
var ilID = $("#ddl_il").val();
var pagePath = window.location.pathname;
$.ajax({
type: "POST", //GET veya POST
url: "Default.aspx/ilChange",
contentType: "application/json; charset=utf-8",
data: '{ilID:'+ilID+'}',
dataType: "json",
success: onSucceeded1,
error: onFailed
});
return false;
}
//istek başarılı olduğunda çalışacak fonksiyon
function onSucceeded1(result) {
$("#loaderGif1").hide();
$("#ddl_ilce").removeAttr("disabled").html(result.d);
$("#ddl_semt").removeAttr("disabled");
}
//istek hatalı olduğunda çalışacak fonksiyon
function onFailed(result) {
alert(result.d);
}
function ilceChange() {
$("#loaderGif2").show();
$("#ddl_semt").attr("disabled", "true").html("<option value=''>Önce İlçe Seçiniz</option>");
var ilceID = $("#ddl_ilce").val();
var pagePath = window.location.pathname;
$.ajax({
type: "POST",
url: "Default.aspx/ilceChange",
contentType: "application/json; charset=utf-8",
data: '{ilceID:' + ilceID + '}',
dataType: "json",
success: onSucceeded2,
error: onFailed
});
return false;
}
function onSucceeded2(result) {
$("#loaderGif2").hide();
$("#ddl_semt").removeAttr("disabled").html(result.d);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td>
il</td>
<td>
<asp:DropDownList ID="ddl_il" runat="server" >
</asp:DropDownList>
</td>
</tr>
<tr>
<td>
ilçe</td>
<td>
<asp:DropDownList ID="ddl_ilce" runat="server" >
</asp:DropDownList>
<img id="loaderGif1" alt="" src="Images/loader.gif" style="width: 16px; height: 16px" /></td>
</tr>
<tr>
<td>
semt</td>
<td>
<asp:DropDownList ID="ddl_semt" runat="server">
</asp:DropDownList>
<img id="loaderGif2" alt="" src="Images/loader.gif" style="width: 16px; height: 16px" /></td>
</tr>
</table>
</div>
</form>
</body>
</html>
하여 default.aspx.cs 코드 뒤에
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Web.Services;
public partial class _Default : System.Web.UI.Page
{
fonksiyon system = new fonksiyon();
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection baglantim = new SqlConnection("Data Source=Hkadir;Initial Catalog=il-ilce-Semt;Integrated Security=True");
DataTable dataTableIl = new DataTable();
SqlCommand sqlCommand = new SqlCommand();
SqlDataAdapter sqlAdapter = new SqlDataAdapter();
baglantim.Open();
try
{
sqlCommand = new SqlCommand("Select * from iller", baglantim);
sqlAdapter = new SqlDataAdapter(sqlCommand);
sqlAdapter.Fill(dataTableIl);
ddl_il.DataSource = dataTableIl;
ddl_il.DataTextField = "Ad";
ddl_il.DataValueField = "IlID";
ddl_il.DataBind();
ListItem li = new ListItem("İl Seçiniz","");
ddl_il.Items.Insert(0, li);
}
finally
{
baglantim.Close();
}
}
public static string ilChange(string ilID)
{
System.Threading.Thread.Sleep(2000);
SqlConnection baglantim = new SqlConnection("Data Source=Hkadir;Initial Catalog=il-ilce-Semt;Integrated Security=True");
DataTable dataTableIlce = new DataTable();
SqlCommand sqlCommand = new SqlCommand();
SqlDataAdapter sqlAdapter = new SqlDataAdapter();
string result="";
baglantim.Open();
try
{
sqlCommand = new SqlCommand("Select * from ilceler where [email protected]", baglantim);
sqlCommand.Parameters.Add("IlID", SqlDbType.NVarChar);
sqlCommand.Parameters["IlID"].Value = ilID;
sqlAdapter = new SqlDataAdapter(sqlCommand);
sqlAdapter.Fill(dataTableIlce);
result += "<option value=''>İlçe Seçiniz</option>";
foreach (DataRow dataRow in dataTableIlce.Rows)
{
result += "<option value='" + dataRow["IlceId"].ToString() + "'>" + dataRow["Ad"].ToString() + "</option>";
}
return result;
}
catch(Exception e)
{
return (e.ToString());
}
finally
{
baglantim.Close();
}
}
public static string ilceChange(string ilceID)
{
System.Threading.Thread.Sleep(2000);
SqlConnection baglantim = new SqlConnection("Data Source=Hkadir;Initial Catalog=il-ilce-Semt;Integrated Security=True");
DataTable dataTableSemt = new DataTable();
SqlCommand sqlCommand = new SqlCommand();
SqlDataAdapter sqlAdapter = new SqlDataAdapter();
string result = "";
baglantim.Open();
try
{
sqlCommand = new SqlCommand("Select * from semtler where [email protected]", baglantim);
sqlCommand.Parameters.Add("IlceID", SqlDbType.NVarChar);
sqlCommand.Parameters["IlceID"].Value = ilceID;
sqlAdapter = new SqlDataAdapter(sqlCommand);
sqlAdapter.Fill(dataTableSemt);
result += "<option value=''>Semt Seçiniz</option>";
foreach (DataRow dataRow in dataTableSemt.Rows)
{
result += "<option value='" + dataRow["SemtId"].ToString() + "'>" + dataRow["Ad"].ToString() + "</option>";
}
return result;
}
catch (Exception e)
{
return (e.ToString());
}
finally
{
baglantim.Close();
}
}
}
데이터베이스 :
ı ilChange (문자열 ilID) 그냥 [webmethod] 넣어,하지만 두 번째 드롭 다운 목록에서 null로 오는 항목을 표시 할 수 없습니다 – neon
괜찮아요 내가 고맙다고 해결 :) – neon