Skip to main content

ASP.NET Rss Feeds Create Database Table

In this Article, I will show you, How to create Rss feeds for your website article. Rss feed is a xml file so in this article, i will create a XML file and Data pick from database table. Rss contains differenet filds link channel , article title, article description, link of the article and many more things. By using Rss feeds we can improve our search engine results , i mean to say we can improve our SEO of the website. 

How to Start it: First of all create two table in the database, These are the fields which are mentioned below. If you are the beginners then i will provide you a short video through this you can create both table easily. 



Also i will provide you scripts of table, through these you can directly create table into your database.

CREATE TABLE [dbo].[Channel] (
    [Id]          INT            IDENTITY (1, 1) NOT NULL,
    [Title]       NVARCHAR (100) NULL,
    [Description] NVARCHAR (MAX) NULL,
    [Link]        NVARCHAR (100) NULL,
    PRIMARY KEY CLUSTERED ([Id] ASC)
);


CREATE TABLE [dbo].[Feeds] (
    [Id]          UNIQUEIDENTIFIER NOT NULL,
    [ChannelID]   INT              IDENTITY (1, 1) NOT NULL,
    [Title]       NVARCHAR (100)   NULL,
    [Description] NVARCHAR (MAX)   NULL,
    [Link]        NVARCHAR (100)   NULL,
    [PDate]       NVARCHAR (100)   NULL,
    PRIMARY KEY CLUSTERED ([ChannelID] ASC)
);




Add a Generic handler file, In it you have a ProcessRequest method. In This method you have to create your logic , I mean to say put your business logic code. You can copy the mentioned code and paste into your Generic Handler file.

<%@ WebHandler Language="C#" Class="Handler" %>

using System;
using System.Web;
using System.Xml;
using System.Data;
using System.Data.SqlClient;

public class Handler : IHttpHandler {

    public void ProcessRequest (HttpContext context) {
        createFeed(context, 1);
    }
    private void createFeed(HttpContext context,int chnlID)
    {
        using (XmlTextWriter writer=new XmlTextWriter(context.Response.OutputStream,System.Text.Encoding.UTF8))
        {
            DataTable dtable = GetTable("select * from [Channel] where Id=@channelID", chnlID);
            writer.WriteStartDocument();
            writer.WriteStartElement("Rss");
            writer.WriteAttributeString("version", "1.0");
            writer.WriteStartElement("Channel");
            writer.WriteElementString("Title", dtable.Rows[0]["Title"].ToString());
            writer.WriteElementString("Description", dtable.Rows[0]["Description"].ToString());
            writer.WriteElementString("Link", dtable.Rows[0]["Link"].ToString());
            //writer.WriteElementString("Title", dtable.Rows[0]["Title"].ToString());


            dtable = GetTable("select * from [Feeds] where ChannelID= @channelID", chnlID);
            foreach (DataRow item in dtable.Rows)
            {
                writer.WriteStartElement("Item");
                writer.WriteElementString("Title", item["Title"].ToString());
                writer.WriteElementString("Description", item["Description"].ToString());
                writer.WriteElementString("Link", item["Link"].ToString());
                writer.WriteElementString("Pub-Date", item["PDate"].ToString());
                writer.WriteElementString("UniqueId",item["Id"].ToString());
                writer.WriteEndElement();
            }
            writer.WriteEndElement();
            writer.WriteEndDocument();
            writer.Flush();
            writer.Close();
         
         
         
        }
    }
    private DataTable GetTable(string qry,int chnlID)
    {
        DataTable dt=new DataTable();
        SqlConnection con = new SqlConnection();
        con.ConnectionString=@"Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True";
        con.Open();
        SqlCommand cmd = new SqlCommand(qry, con);
        cmd.Parameters.AddWithValue("@channelID", chnlID);
        SqlDataAdapter da = new SqlDataAdapter(cmd);
        da.Fill(dt);
        return dt;        
     
     
    }

    public bool IsReusable {
        get {
            return false;
        }
    }

}

Comments

Popular posts from this blog

difference between structure and union in C Language

In c language article we will see the difference between union and structure. Both are the user define datatype in c language. See the table which is mentioned below: ASP.NET Video Tutorial Series Structure Union1.The keywordstruct is used to define a structure 1. The keyword union is used to define a union. 2. When a variable is associated with a structure, the compiler allocates the memory for each member. The size of structure is greater than or equal to the sum ofsizes of its members. The smaller members may end with unused slack bytes. 2. When a variable is associated with a union, thecompiler allocates thememory by considering the size of the largest memory. So, size of union is equal to the size of largest member. 3. Each member within a structure is assigned unique storage area of location. 3. Memory allocated is shared by individual members of union. 4. The address of each member will be in ascending order This indicates that memory for each member will start at different offset v…

Difference between Linear search and Binary Search in c language

SQL Video Channel : Download all SQL Video



Binary Search Linear Search Works only on sorted items. such as  1,2,3,4,5,6  etc
Works on sorted as well as unsorted items. 12,4,5,3,2,1 etc Very efficient if the items are sorted Very efficient if the items are less and present in the beginning of the list. such as Suppose your list items are : 12,3,4,5,1 and you want to search 12 number then you get beginning in the list. Works well with arrays and not on linked lists. Works with arrays and linked lists.
Number of comparisons are less More number of comparisons are required if the items are present in the later part of the array or its elements are more.

Memory representation of Linked List Data Structures in C Language

Memory representation of Linked List

             In memory the linked list is stored in scattered cells (locations).The memory for each node is allocated dynamically means as and when required. So the Linked List can increase as per the user wish and the size is not fixed, it can vary.

               Suppose first node of linked list is allocated with an address 1008. Its graphical representation looks like the figure shown below:


      Suppose next node is allocated at an address 506, so the list becomes,



  Suppose next node is allocated with an address with an address 10,s the list become,


The other way to represent the linked list is as shown below:




 In the above representation the data stored in the linked list is “INDIA”, the information part of each node contains one character. The external pointer root points to first node’s address 1005. The link part of the node containing information I contains 1007, the address of next node. The last node …