Skip to main content

Hierarchical MenuItem in ASP.NET


In all websites we have menus of some type or other. Here we will talk about creating a hierarchical menu using ASP.NET MenuItem.



Add a MenuItem control to the page as shown below

<form id="frmMain" runat="server">
    <div>
        <asp:Menu ID="menuHotels" runat="server"
            onmenuitemclick="menuHotels_MenuItemClick">           
        </asp:Menu>
    </div>
</form>

Code in code behind page:  As this is a sample application please ignore hard coding of connectionstring and naming convention.

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

namespace Hotels
{
    public partial class HotelWorld : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            PopulateMenu();
        }

        public void PopulateMenu()
        {
            DataSet dst = GetMenuData();
            foreach (DataRow mchildRow in dst.Tables["Countries"].Rows)
            {
                MenuItem mchildItem = new MenuItem((string)mchildRow["name"],              mchildRow["CountryID"].ToString());
                menuHotels.Items.Add(mchildItem);
                foreach (DataRow childRow in mchildRow.GetChildRows("Children"))
                {
                    MenuItem childItem = new MenuItem((string)childRow["name"], childRow["CityID"].ToString());
                    mchildItem.ChildItems.Add(childItem);

                    foreach (DataRow Child1row in childRow.GetChildRows("Children1"))
                    {
                        MenuItem children1Item = new MenuItem((string)Child1row["name"], Child1row["HotelID"].ToString());

                        childItem.ChildItems.Add(children1Item);

                    }
                }
            }
        }
       
        DataSet GetMenuData()
        {
            SqlConnection con = new SqlConnection(@"Data Source=Server\MSSQLFULL;Initial Catalog=poc;Integrated Security=True");
            SqlDataAdapter dad1 = new SqlDataAdapter("SELECT * FROM Countries order by name", con);
            SqlDataAdapter dad2 = new SqlDataAdapter("SELECT * FROM Cities order by name", con);
            SqlDataAdapter dad3 = new SqlDataAdapter("SELECT * FROM Hotels order by name", con);
           
            DataSet dst = new DataSet();
            dad1.Fill(dst, "Countries");
            dad2.Fill(dst, "Cities");
            dad3.Fill(dst, "Hotels");
           
            dst.Relations.Add("Children", dst.Tables["Countries"].Columns["CountryID"], dst.Tables["Cities"].Columns["CountryID"]);
            dst.Relations.Add("Children1", dst.Tables["Cities"].Columns["CityID"], dst.Tables["Hotels"].Columns["CityID"]);
           
            return dst;
        }

        protected void menuHotels_MenuItemClick(object sender, MenuEventArgs e)
        {
            Session["menuArgs"] = e;
            Session["SelectedCity"] = e.Item.Value;
            Response.Redirect("~/Cities.aspx");
        }
       

    }
}

MenuItem control can have child controls and in this case we have another MenuItem control as its child.  We are reading data from database and assigning Text and Value to menuitem object and then we are adding that object as a child to the parent MenuItem.


Labels:

Comments

Post a Comment

Popular posts from this blog

Laravel XAMPP MySQL artisan migrate install error mysql.sock

In my previous post I wrote about setting up Laravel 4 on Mac with XAMPP . When I tried to use migrations (using artisan) I faced some issue. I will also post about Laravel migrations soon.    php artisan migrate:install Error :                                                     [PDOException]                                       SQLSTATE[HY000] [2002] No such file or directory                                              Solution : We need to tell artisan which mysql we want it to use. For this to work we need to porivde it with mysql.sock which we want it to use. So change your database settings like this: 'mysql' => array( 'driver'    => 'mysql', 'host'      => 'localhost',     'unix_socket' => '/Applications/xampp/xamppfiles/var/mysql/mysql.sock', 'database'  => 'wedding', 'username'  => 'root', 'password'  => '', '
6 comments
Read more

Add (Drop) a new article (table) at publisher in merge replication

Let us add the article using the GUI first. First of all create the table on publisher database. Now right click on the publisher and select properties from the menu. Click on articles. Uncheck the - "Show only checked articles in the list" checkbox, in order to see the newly added table. Select the table as shown in the figure below. Press ok The article has now been added to the publisher We now need to recreate the snapshot Right click the publication and select – “View snapshot agent status”. Click start to regenerate snapshot. Now right click on the subscription (I have both on same server you may have on different servers) and select “View synchronization status” Click on start on the agent. The schema changes will propagate to the client if you have "Replicate schema changes" property set to true in the publisher.
Post a Comment
Read more

Check SQL Server Job status (State) using sp_help_job and xp_sqlagent_enum_jobs

This article is about checking the status of a SQL job. In our work place we have lot of SQL jobs. These jobs will run whole day and are business critical. They will load the data and generate extracts which will be used by business people. Thus, it becomes quite essential to support the system efficiently so that the job finishes in time and as desired. Also, while designing a new system sometimes we need to check the dependency of one job over another. In such scenario we need to check whether a particular job has finished or not. All this can be achieved in SQL Server by using the procedures:- sp_help_job xp_sqlagent_enum_jobs Note: xp_sqlagent_enum_jobs is an undocumented proc inside of sp_help_job and is used extensively to get SQL agent job information. sp_help_job: This procedure gives some insight into the status, and information, about a job. This stored procedure provides information such as last start time, job status etc. Syntax sp_help_job { [ @job_id= ] jo
2 comments
Read more