Link to home
Start Free TrialLog in
Avatar of bsarahim
bsarahim

asked on

breadcrumbs

Hi

I have to create a breadcrumbs trails for the Categories and their subcategories as u have seen it in many sites...

Maincetegory > Subcategory >subsubcategory > subsubsubcategory >items

This is the depth of the category..
category table i have Categoryid and categoryparentid where categoryid is linked to it... I have to link it with the below table


SELECT  [Id],      ,[Name],       parentcategoryid    
  FROM [Category]

Id      Name      parentcategoryid
1      Books              0
2      Computers      0
3      Desktops       2
4      Notebooks      2
5      Accessories      3
6      Software        2
7      Games              2
8      Electronics      0
9      Camera, photo      8

like this

and I want to have a breadcumps which shows

Books
Computers
Computers->Desktops
Computers->Notebooks
Computers->Desktops->Accessories

This should be dynamic! thanks a lot!

any help will be appreciated
Avatar of Robert Schutt
Robert Schutt
Flag of Netherlands image

Would this be helpful:
CREATE FUNCTION GetCategoryTrail 
(
	@p1 int
)
RETURNS nvarchar(1000)
AS
BEGIN
	DECLARE @Result nvarchar(1000)
    SELECT @Result = CASE [parentcategoryid] WHEN 0 THEN [Name] ELSE dbo.GetCategoryTrail([parentcategoryid]) + ' > ' + [Name] END
    FROM [Category]
	WHERE [Id] = @p1

	RETURN @Result
END
GO

Open in new window

Then call it like this:
SELECT [Id], [Name], dbo.GetCategoryTrail([Id]) AS [Trail]
FROM [Category]

Open in new window

Avatar of bsarahim
bsarahim

ASKER

Thanks for that and it is working!

I'm little confused, how do I can show

Computers->Desktops->Accessories     (display)

When I click Accessories from sitemap or breadcumps, that will show accessories items

and when I click on the desktop, it should show the desktop items.. whether I should write asp.net routing?


Im aware of how to show the items based on the category id via datalist/gridview...
delete2.png
I'm not sure what you're asking, it sounds like you want to DataBind a label the same way you do with a grid? I'd have to see a bit more of your current page and/or code (showing the connection and category selection) to try to show you a way to do this in the same way, I would normally use a piece of code in the page load that reads the result of a SQL command using the current category id as parameter but maybe you're using 'asp:' tags to bind the data?
let me simplify

Let say I have menu where categories are being displayed, which is hardcoded in jquery, div tags

Under computers Menu category I have Accessories link, when the user click the Accessories.

after above menu,  the display should show Computers ->Desktops->Accessories
All the computer, desktop, accessories, are individual hyperlinks


Hope you understood, and im going to second

2nd requirement, based on the above requirement:

when I click any of above  computer-> desktop->, accessories , I will fetch the data based on the category code in the datalist...

Pls let me know, if it is not clear...
ASKER CERTIFIED SOLUTION
Avatar of Robert Schutt
Robert Schutt
Flag of Netherlands image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Here's one way to work with the output generated by the function as changed in my previous post. Note that I used the pagename and querystringparameter name to match the arbitrary examples I used.

yourpage.aspx:
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="yourpage.aspx.vb" Inherits="WebAppQ_27979539.WebForm1" %>

<!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>
</head>
<body>
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=.\sqlexpress;User Id=ee;Password=ee;" SelectCommand="SELECT dbo.GetCategoryTrail([Id]) FROM [Category] WHERE [Id] = @Id">
        <SelectParameters><asp:QueryStringParameter Type="Int32" Name="Id" QueryStringField="catid" DefaultValue="5" /></SelectParameters>
    </asp:SqlDataSource>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" runat="server" Text="Label" ></asp:Label>
    </div>
    </form>
</body>
</html>

Open in new window

yourpage.aspx.vb:
Imports System.Data.SqlClient

Public Class WebForm1
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim dv As DataView = SqlDataSource1.Select(New DataSourceSelectArguments())
        Label1.Text = dv.Table.Rows(0).Item(0)
    End Sub

End Class

Open in new window