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AjaxControlToolkit 加 webservice 实现DropDownList来联动

2008-01-10 12:45 447 查看

下载地址：http://download.csdn.net/source/330798
Tool.asmx
<%@ WebService Language="C#" CodeBehind="~/App_Code/Tool.cs" Class="Tool" %>
Tool.cs

using System;

using System.Web;

using System.Collections;

using System.Web.Services;

using System.Web.Services.Protocols;

using System.Collections.Generic;

using AjaxControlToolkit;

using System.Data;

/**//// <summary>

/// Tool 的摘要说明

/// </summary>

[WebService(Namespace = "http://tempuri.org/")]

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

[System.Web.Script.Services.ScriptService]

public class Tool : System.Web.Services.WebService

...{

public Tool()

...{

//如果使用设计的组件，请取消注释以下行

//InitializeComponent();

}

[WebMethod]

public string HelloWorld()

...{

return "Hello World";

}

[WebMethod]

public CascadingDropDownNameValue[] GetProvices(string knownCategoryValues, string category)

...{

List<CascadingDropDownNameValue> Provinces = new List<CascadingDropDownNameValue>();

DBClass db = new DBClass();

DataTable dt = db.DBClass_getDataTable("select * from Province");

if (dt != null && dt.Rows.Count > 0)

...{

for (int i = 0; i < dt.Rows.Count; i++)

...{

CascadingDropDownNameValue Province = new CascadingDropDownNameValue();

Province.name = dt.Rows[i]["name"].ToString();

Province.value = dt.Rows[i]["code"].ToString();

Provinces.Add(Province);

}

/**//*从数据库中加载所有省份*/

/**//* 下面是事例 */

//Provinces.Add(new CascadingDropDownNameValue("北京", "beijing"));

//Provinces.Add(new CascadingDropDownNameValue("江苏", "jiangsu"));

//Provinces.Add(new CascadingDropDownNameValue("上海", "shanghai"));

return Provinces.ToArray();

}

[WebMethod]

public CascadingDropDownNameValue[] GetCities(string knownCategoryValues, string category)

...{//"Province:110000;"

List<CascadingDropDownNameValue> Citys = new List<CascadingDropDownNameValue>();

DBClass db = new DBClass();

string ProvinceId= (knownCategoryValues.Substring(knownCategoryValues.IndexOf(':')+1)).Replace(";","");

DataTable dt = db.DBClass_getDataTable("select * from City where provinceId=" + ProvinceId);

if (dt != null && dt.Rows.Count > 0)

...{

for (int i = 0; i < dt.Rows.Count; i++)

...{

CascadingDropDownNameValue city = new CascadingDropDownNameValue();

city.name = dt.Rows[i]["name"].ToString();

city.value = dt.Rows[i]["code"].ToString();

Citys.Add(city);

}

/**//*从数据库中加载所有省份*/

/**//* 下面是事例 */

//Provinces.Add(new CascadingDropDownNameValue("南京", "beijing"));

//Provinces.Add(new CascadingDropDownNameValue("徐州", "jiangsu"));

//Provinces.Add(new CascadingDropDownNameValue("扬州", "shanghai"));

//Provinces.Add(new CascadingDropDownNameValue("常州", "shanghai"));

return Citys.ToArray();

}

Visitor_Register.aspx

<%...@ Page Language="C#" AutoEventWireup="true" CodeFile="Visitor_Register.aspx.cs" Inherits="page_P_apply_Apply_WebMarket_DSN_DNS_User_Register" %>

<%...@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

</head>

<asp:DropDownList ID="DDL_Province" runat="server" CssClass="textarea_nowide" Width="200px">

<asp:ListItem Value="1">2</asp:ListItem>

<asp:ListItem Value="2">3</asp:ListItem>

</asp:DropDownList> <span style="color: #ff0000"> </span>

<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="必选" ControlToValidate="DDL_Province" Display="Dynamic"></asp:RequiredFieldValidator>

<cc1:CascadingDropDown ID="CascadingDropDown1" runat="server" TargetControlID="DDL_Province"

Category="Province"

LoadingText="正在加载省份..."

PromptText ="请选择省份..."

ServicePath="~/CusService/Tool.asmx"

ServiceMethod="GetProvices"

</cc1:CascadingDropDown>

<asp:DropDownList ID="DDL_Cities" runat="server" CssClass="textarea_nowide" Width="200px">

</asp:DropDownList><span class="Cred">

<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ErrorMessage="必选" ControlToValidate="DDL_Cities" Display="Dynamic"></asp:RequiredFieldValidator>

<cc1:CascadingDropDown ID="CascadingDropDown2"

runat="server" TargetControlID="DDL_Cities"

Category="City"

LoadingText="正在加载城市..."

PromptText ="请选择城市..."

ServicePath="~/CusService/Tool.asmx"

ServiceMethod="GetCities"

ParentControlID="DDL_Province"

</cc1:CascadingDropDown>

</form>

</body>

</html>

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