在网上无意看到的,不过一开始没看懂,后来试了一下,才明白是干什么的。主要是把网址当成一个对象来处理了。
比如说,现在我要生成一个网址 http://www.xxx.com/bbs/view.aspx?id=100&user=szyicol
这个时候可能要手工一个一个用+和变量连起来。这里就可以用一个URL处理类了。
比如设置这个类的主机是www.xxx.com,目录是bbs ,页面是view.aspx ,参数就有多个了。当然在初始化的时候,也可以给一个地址,这个类会自己会析并保存起来。在这里贴一点示例代码
//UrlBuilder builder = new UrlBuilder("http://www.codeproject.com/p/index.asp?catw=41");
UrlBuilder builder = new UrlBuilder();
builder.Host = "www.xxx.com";
builder.Path = "bbs";
builder.PageName = "view.aspx";
//参数多种方式参加
builder.QueryString.Add("catbb", "12345");
builder.QueryString.ContainsKey("cataa");
builder.QueryString.ContainsValue("12345");
string uri = builder.ToString();
builder.Navigate();
这个是处理类:
using System;
using System.Web;
using System.Collections.Specialized;
namespace WebApplication3
{
public class UrlBuilder : UriBuilder {
StringDictionary _queryString = null;
Properties#region Properties
public StringDictionary QueryString {
get {
if(_queryString == null) {
_queryString = new StringDictionary();
}
return _queryString;
}
}
public string PageName {
get {
string path = base.Path;
return path.Substring(path.LastIndexOf("/") + 1);
}
set {
string path = base.Path;
path = path.Substring(0, path.LastIndexOf("/"));
base.Path = string.Concat(path, "/", value);
}
}
#endregion
Constructor overloads#region Constructor overloads
public UrlBuilder() : base() {
}
public UrlBuilder(string uri) : base(uri) {
PopulateQueryString();
}
public UrlBuilder(Uri uri) : base(uri) {
PopulateQueryString();
}
public UrlBuilder(string schemeName, string hostName) : base(schemeName, hostName) {
}
public UrlBuilder(string scheme, string host, int portNumber) : base(scheme, host, portNumber) {
}
public UrlBuilder(string scheme, string host, int port, string pathValue) : base(scheme, host, port, pathValue) {
}
public UrlBuilder(string scheme, string host, int port, string path, string extraValue) : base(scheme, host, port, path, extraValue) {
}
public UrlBuilder(System.Web.UI.Page page) : base(page.Request.Url.AbsoluteUri) {
PopulateQueryString();
}
#endregion
Public methods#region Public methods
public new string ToString() {
GetQueryString();
return base.Uri.AbsoluteUri;
}
public void Navigate() {
_Navigate(true);
}
public void Navigate(bool endResponse) {
_Navigate(endResponse);
}
private void _Navigate(bool endResponse) {
string uri = this.ToString();
HttpContext.Current.Response.Redirect(uri, endResponse);
}
#endregion
Private methods#region Private methods
private void PopulateQueryString() {
string query = base.Query;
if(query == string.Empty || query == null) {
return;
}
if(_queryString == null) {
_queryString = new StringDictionary();
}
_queryString.Clear();
query = query.Substring(1); //remove the ?
string[] pairs = query.Split(new char[]{'&'});
foreach(string s in pairs) {
string[] pair = s.Split(new char[]{'='});
_queryString[pair[0]] = (pair.Length > 1) ? pair[1] : string.Empty;
}
}
private void GetQueryString() {
int count = _queryString.Count;
if(count == 0) {
base.Query = string.Empty;
return;
}
string[] keys = new string[count];
string[] values = new string[count];
string[] pairs = new string[count];
_queryString.Keys.CopyTo(keys, 0);
_queryString.Values.CopyTo(values, 0);
for(int i = 0; i < count; i++) {
pairs[i] = string.Concat(keys[i], "=", values[i]);
}
base.Query = string.Join("&", pairs);
}
#endregion
}
}