建立一个WCF服务。
1 using ClassLibrary;
2 using System;
3 using System.Collections.Generic;
4 using System.Linq;
5 using System.Runtime.Serialization;
6 using System.ServiceModel;
7 using System.ServiceModel.Web;
8 using System.Text;
9 using System.Xml;
10
11 namespace AreaService
12 {
13 // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码、svc 和配置文件中的类名“Service1”。
14 // 注意: 为了启动 WCF 测试客户端以测试此服务，请在解决方案资源管理器中选择 Service1.svc 或 Service1.svc.cs，然后开始调试。
15 public class Service1 : IService1
16 {
17 public static class api
18 {
19 public static XmlDocument cacheAreaDocument { get; set; }
20 public static XmlDocument cacheUrlMapDocument { get; set; }
21 }
22 public List<ClassLibrary.Area> GetProvince()
23 {
24 XmlDocument xd = api.cacheAreaDocument;
25 if (xd == null)
26 {
27 xd = new XmlDocument();
28 xd.Load(AppDomain.CurrentDomain.BaseDirectory + "/data/ChinaArea.xml");
29 }
30 XmlNode xn = xd.SelectSingleNode("area");
31 List<Area> areas = new List<Area>();
32 //等效于 XmlNode xn = xd.DocumentElement;
33 foreach (XmlNode province in xn.ChildNodes)
34 {
35 XmlElement proEl = (XmlElement)province;
36 areas.Add(new Area { province = proEl.GetAttribute("province"), provinceID = proEl.GetAttribute("provinceID") });
37 }
38 return areas;
39 }
40 public List<ClassLibrary.Area> GetCityByProvinceId(string provinceID)
41 {
42 XmlDocument xd = api.cacheAreaDocument;
43 if (xd == null)
44 {
45 xd = new XmlDocument();
46 xd.Load(AppDomain.CurrentDomain.BaseDirectory + "/data/ChinaArea.xml");
47 }
48 XmlNode xn = xd.SelectSingleNode("area");
49 List<ClassLibrary.Area> areas = new List<ClassLibrary.Area>();
50 foreach (XmlNode province in xn.ChildNodes)
51 {
52 XmlElement pro = (XmlElement)province;
53 if (pro.GetAttribute("provinceID") == provinceID)
54 {
55 foreach (var cityNd in pro.ChildNodes)
56 {
57 XmlElement city = (XmlElement)cityNd;
58 areas.Add(new ClassLibrary.Area { City = city.GetAttribute("City"), CityID = city.GetAttribute("CityID") });
59 }
60 }
61 }
62 if (xn.ChildNodes == null || xn.ChildNodes.Count <= 0)
63 {
64 areas.Add(new ClassLibrary.Area { City = "", CityID = "" });
65 }
66 return areas;
67 }
68
69 public List<ClassLibrary.Area> GetPieceareaByCityID(string CityID)
70 {
71 List<Area> areas = new List<Area>();
72 if (CityID.Trim() == "")
73 {
74 areas.Add(new Area { Piecearea = "", PieceareaID = "" });
75 return areas;
76 }
77 XmlDocument xd = api.cacheAreaDocument;
78 if (xd == null)
79 {
80 xd = new XmlDocument();
81 xd.Load(AppDomain.CurrentDomain.BaseDirectory + "/data/ChinaArea.xml");
82 }
83 XmlNode xn = xd.SelectSingleNode("area");
84
85 //等效于 XmlNode xn = xd.DocumentElement;
86 foreach (XmlNode province in xn.ChildNodes)
87 {
88 foreach (XmlNode cityNd in province.ChildNodes)
89 {
90 if ((cityNd as XmlElement).GetAttribute("CityID") == CityID)
91 {
92 foreach (var pieceareaNd in cityNd.ChildNodes)
93 {
94 XmlElement piecearea = (XmlElement)pieceareaNd;
95 areas.Add(new Area { Piecearea = piecearea.GetAttribute("Piecearea"), PieceareaID = piecearea.GetAttribute("PieceareaID") });
96 }
97 }
98
99 }
100 }
101 return areas;
102 }
103 }
104 }
建立后生成。然后在前端添加服务引用。
实例化。
1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9
10 namespace 动态的获取省市
11 {
12 public partial class Form1 : Form
13 {
14 public Form1()
15 {
16 InitializeComponent();
17 sa = new AreaService.Service1Client();
18 }
19 AreaService.Service1Client sa;
20 private void Form1_Load(object sender, EventArgs e)
21 {
22 comboBox1.DataSource = sa.GetProvince();
23 comboBox1.DisplayMember = "province";
24 comboBox1.ValueMember = "provinceID";
25 comboBox1_SelectedIndexChanged(sender,e);
26 comboBox2_SelectedIndexChanged(sender, e);
27 comboBox3_SelectedIndexChanged(sender, e);
28
29 }
30 /// <summary>
31 /// 获取市
32 /// </summary>
33 /// <param name="sender"></param>
34 /// <param name="e"></param>
35 private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
36 {
37 comboBox2.DataSource = sa.GetCityByProvinceId(comboBox1.SelectedValue+"");
38 comboBox2.DisplayMember = "City";
39 comboBox2.ValueMember = "CityID";
40 }
41
42 private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
43 {
44 comboBox3.DataSource = sa.GetPieceareaByCityID(comboBox2.SelectedValue+"");
45 comboBox3.DisplayMember = "Piecearea";
46 comboBox3.ValueMember = "PieceareaID";
47 }
48
49
50 private void comboBox3_SelectedIndexChanged(object sender, EventArgs e)
51 {
52
53 }
54
55 private void button1_Click(object sender, EventArgs e)
56 {
57
58 }
59
60
61 }
62 }
这是窗体设计代码：
namespace 动态的获取省市
{
partial class Form1
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.comboBox1 = new System.Windows.Forms.ComboBox();
this.comboBox2 = new System.Windows.Forms.ComboBox();
this.comboBox3 = new System.Windows.Forms.ComboBox();
this.button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(40, 50);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(29, 12);
this.label1.TabIndex = 0;
this.label1.Text = "省：";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(40, 111);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(29, 12);
this.label2.TabIndex = 1;
this.label2.Text = "市：";
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(40, 175);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(29, 12);
this.label3.TabIndex = 2;
this.label3.Text = "区：";
//
// comboBox1
//
this.comboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.comboBox1.FormattingEnabled = true;
this.comboBox1.Location = new System.Drawing.Point(87, 47);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Size = new System.Drawing.Size(121, 20);
this.comboBox1.TabIndex = 3;
this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged);
//
// comboBox2
//
this.comboBox2.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.comboBox2.FormattingEnabled = true;
this.comboBox2.Location = new System.Drawing.Point(87, 108);
this.comboBox2.Name = "comboBox2";
this.comboBox2.Size = new System.Drawing.Size(121, 20);
this.comboBox2.TabIndex = 4;
this.comboBox2.SelectedIndexChanged += new System.EventHandler(this.comboBox2_SelectedIndexChanged);
//
// comboBox3
//
this.comboBox3.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.comboBox3.FormattingEnabled = true;
this.comboBox3.Location = new System.Drawing.Point(87, 172);
this.comboBox3.Name = "comboBox3";
this.comboBox3.Size = new System.Drawing.Size(121, 20);
this.comboBox3.TabIndex = 5;
this.comboBox3.SelectedIndexChanged += new System.EventHandler(this.comboBox3_SelectedIndexChanged);
//
// button1
//
this.button1.Location = new System.Drawing.Point(87, 226);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 6;
this.button1.Text = "确 定";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(261, 272);
this.Controls.Add(this.button1);
this.Controls.Add(this.comboBox3);
this.Controls.Add(this.comboBox2);
this.Controls.Add(this.comboBox1);
this.Controls.Add(this.label3);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.ComboBox comboBox1;
private System.Windows.Forms.ComboBox comboBox2;
private System.Windows.Forms.ComboBox comboBox3;
private System.Windows.Forms.Button button1;
}
}
效果如下：
时间： 2024-10-24 07:01:41