Use the UserControl to do the website navigation bar The idea analysis _ practical skill

URL is actually the mapping of directory files. So as long as you split the URL and loop according to the hierarchy of the URL, you get the directory of the current navigation file.

1, the Establishment of database table: Navigate

Column Name	Data type	Description
Id	Int
ParentID	Int	Parent ID
Root	Int	Level, 0 represents the root, topmost
PathName	varchar (50)	(URL) path name
Navname	varchar (50)	(column) Navigation name

2, the establishment of user control Navigate.ascx
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<%@ control language= "C #" autoeventwireup= "true" codefile= "Navigate.ascx.cs" inherits= "Uc_navigate"%>
<div style= "display:block;margin-top:5px;margin-left:3px;margin-bottom:5px;" >

Your current location: <a href= "/index.aspx" > Home </a>
>>
<asp:label id= "lblnavigate" runat= "Server" ></asp:Label>
<asp:label id= "Lbltitle" runat= "Server" ></asp:Label>

</div>


3, the user control's CS background file Navigate.ascx.cs
-----------------------------------------------------------
Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Data;
Using System.Data.SqlClient;
Using System.Configuration;
Using System.Web;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.WebControls.WebParts;
Using System.Web.UI.HtmlControls;

Using Bai51.data;

public partial class UC_Navigate:System.Web.UI.UserControl
{
private String Localurl= "http://localhost:8085";
private string title;
Private DataSet DS;
Private DataTable DT;

protected void Page_Load (object sender, EventArgs e)
{

#region--Get navigation information table contents (cache)--
Ds= (DataSet) cache["Dsnavigatecache"];
if (ds==null)
{
Ds=sqlcomd.createsqldataset ("SELECT * from Navigate", "dsnavigate");
Cache.Insert ("Dsnavigatecache", Ds,null,system.web.caching.cache.noabsoluteexpiration,timespan.fromhours (24));
}
Dt=ds. Tables[0];
#endregion

#region--Generate navigation information--
Split Current URL address
string[] Weburl = System.Web.HttpContext.Current.Request.path. Split (new char[] {'/'});
int len = weburl.length-1;

Hierarchy cycle
String strURL = Localurl + "/";
String strnavigate = "";
String Parenid = "0";

for (int i = 1; i < Len; i++)
{
String sql = "root=" + convert.tostring (i-1) + "and pathname= '" + weburl[i] + "' and parentid=" + Parenid;
datarow[] rows = dt. Select (SQL);

Circular Connection Address
strURL + + (Weburl[i] + "/");
Strnavigate + = "<a href= '" + strurl + "' >" + rows[0]["Navname"]. ToString () + "</a>" + ">>";

Save Parent ID
Parenid = rows[0]["Id"]. ToString ();
}
#endregion

Lblnavigate.text=strnavigate;
Lbltitle.text=title;
}

#region--Control properties--
public string Localurl
{
Get{return Localurl;}
set{Localurl=value;}
}
public string Title
{
get {return title;}
set {title = value;}
}
#endregion

}

4, the use of methods
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Drag the Navigate.ascx user control into the page, named "NavBar".
The navigation name of the current file is written in the background code.
Navbar.title = "This page is xx column";