Solved

sort menu items from xml

Posted on 2011-09-19
4
301 Views
Last Modified: 2012-06-27
Hey guys i have an menu and populating it from a data base

here the code in c#:

 
protected void Page_Load(object sender, EventArgs e)
    {
        DataSet ds = new DataSet();
        using (SqlConnection conn = new SqlConnection(connStr))
        {
            string sql = "Select id, title, parent_id, url from menu";
            SqlDataAdapter da = new SqlDataAdapter(sql, conn);
            da.Fill(ds);
            da.Dispose();
        }

        ds.DataSetName = "Menus";
        ds.Tables[0].TableName = "menu";
        DataRelation relation = new DataRelation("ParentChild", ds.Tables["menu"].Columns["id"], ds.Tables["menu"].Columns["parent_id"], true);

        relation.Nested = true;
        ds.Relations.Add(relation);

        xmlDataSource.Data = ds.GetXml();
    }

Open in new window


my problem is, how do to do a sort on the sub menus?

0
Comment
Question by:JCWEBHOST
4 Comments
 
LVL 16

Accepted Solution

by:
Easwaran Paramasivam earned 125 total points
ID: 36558694
In the database store the sub menu items in the same order as you wish to sort either ascending or descending.

0
 
LVL 8

Assisted Solution

by:gena17
gena17 earned 125 total points
ID: 36558901
If you do want to sort the sub-menus, but do not want to sort the root level items, I suggest to make a copy of the table withing the DataSet after you bring the data from the database. Then sort the second table and create a relation between the two tables.
0
 
LVL 3

Assisted Solution

by:ExpertLogin_890
ExpertLogin_890 earned 125 total points
ID: 36559037
for softing the xml data go through with below links

http://www.example-code.com/vbdotnet/xmlSort.asp

other wise you can try below code


using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Xml;
using System.Xml.XPath;
using System.Text;

namespace CodeBank.System_Xml_XPath {
    /// <summary>
    /// Summary description for SortingXML.
    /// </summary>
    public partial class SortingXML : System.Web.UI.Page {
   
        protected void Page_Load(object sender, System.EventArgs e) {
            StringBuilder unsorted = new StringBuilder();
            StringBuilder sorted = new StringBuilder();
            string xpath = "/Customers/Customer/ContactName";

            //Create XPathDocument class so we can get a navigator
            XPathDocument doc = new XPathDocument(Server.MapPath("customers.xml"));
            XPathNavigator nav = doc.CreateNavigator();

            XPathNodeIterator nodeIter1 = nav.Select(xpath);
            while (nodeIter1.MoveNext()) {
                unsorted.Append(nodeIter1.Current.Value + "<br />");
            }
            this.lblUnsorted.Text = unsorted.ToString();

            //Compile xpath expression so we can add a sort to it
            XPathExpression exp = nav.Compile(xpath);
            exp.AddSort("text()",XmlSortOrder.Ascending,XmlCaseOrder.None,"",
                XmlDataType.Text);

            //select nodes so we can see the sort
            XPathNodeIterator nodeIter2 = nav.Select(exp);
            while (nodeIter2.MoveNext()) {
                sorted.Append(nodeIter2.Current.Value + "<br />");
            }        
            this.lblSorted.Text = sorted.ToString();
        }

        #region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            //
            InitializeComponent();
            base.OnInit(e);
        }
       
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {    

        }
        #endregion
    }
}
0
 
LVL 7

Assisted Solution

by:gopaltayde
gopaltayde earned 125 total points
ID: 36559991
populate below two tables into dataset
1) "Select id, title, parent_id, url from menu where parent_id is null"
2) "Select id, title, parent_id, url from menu where parent_id is not null order by id" (or order by title)

Then set the relation between them.
0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now