Get Blogger Post - Rss Feed in our website

Task: Get Blogger RSS Feed/Post to our website (Show blogger post to our website).

Description: Sometime we need to show blogger post(RSS Feed) to our website. Using below code we can read all blog post from blogger(blogspot) Or we can also modify the code for reading other RSS feed(XML). The basic behind the reading RSS is read XML response. The blogger provides us a Rss link, from where we can read the XML.
I also used the string trimming with removing html tag Method As I used previously : Remove Html Tag
Here I used two methods for achieving this.

Method 1 : Using XML...

// Code Start //

using System.Xml;

using System.Text.RegularExpressions;

public string blogdetail = "";
private void ReadRssFeed()
{
    string blog = "";
    string RssFeedUrl = "http://hemantrautela.blogspot.com/feeds/posts/default?alt=rss";
    XDocument xDoc = new XDocument();
    xDoc = XDocument.Load(RssFeedUrl);
    var items = (from x in xDoc.Descendants("item")
                 select new
                 {
                     title = x.Element("title").Value,
                     link = x.Element("link").Value,
                     pubDate = x.Element("pubDate").Value,
                     description = x.Element("description").Value
                 });
    if (items != null)
    {
        foreach (var i in items)
        {
            String result = Regex.Replace(i.description, @"<[^>]*>", String.Empty);
            if (result.Length > 300)
            {
                result = result.Substring(0, 300);
                result = result.Substring(0, result.LastIndexOf(" ")) + "...";

            }
            blog += "<a href='" + i.link + "' rel='nofollow'>" + i.title + "</a><br/>" +
                    result + "<br/><br/>";
        }
        blogdetail = blog;
    }

}

// Code End//


Method 2 : Using by System.ServiceModel.Syndication

// Code Start //

    
    using System.Text.RegularExpressions;

    public string blogdetail = "";
    public void ReadRssFeed()
    {
        string rssFeedUrl = "http://hemantrautela.blogspot.com/feeds/posts/default?alt=rss";
        var syndicationFeed = System.ServiceModel.Syndication.SyndicationFeed.Load(XmlReader.Create(rssFeedUrl));
        string blog = "";
        foreach (var item in syndicationFeed.Items)
        {
            String result = Regex.Replace(item.Summary.Text, @"<[^>]*>", String.Empty);
            if (result.Length > 300)
            {
                result = result.Substring(0, 300);
                result = result.Substring(0, result.LastIndexOf(" ")) + "...";
            }
            blog += "<a href='" + item.Links[0].Uri + "' rel='nofollow'>" + item.Title.Text + "</a><br/>" +
                    result + "<br/><br/>";
        }
        blogdetail = blog;

    }

// Code End//

How detect mobile device or desktop using code

Task: Detect Mobile Device Or Desktop using Asp.net and C# code.

Description: Today is the market of responsive website(desktop & mobile friendly). we can manage easily responsive design of website using media query in CSS. But if we want to detect Device type using back-end code then what have to do ?
So here I show a code for detecting different type of  Mobile devices using code. I use a function detectDevice() which returns Boolean value, "True" for detect successfully mobile device else return "False" for desktop/laptop.
  

Code :

using System.Text.RegularExpressions;

public bool detectDevice()
{
    bool deviceStatus = false;
    string user_agent = Request.ServerVariables["HTTP_USER_AGENT"];
    Regex reg1 = new Regex(@"(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino", RegexOptions.IgnoreCase | RegexOptions.Multiline);

    Regex reg2 = new Regex(@"1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-", RegexOptions.IgnoreCase | RegexOptions.Multiline);

    if ((reg1.IsMatch(user_agent) || reg2.IsMatch(user_agent.Substring(0, 4))))
    {
        deviceStatus = true//Mobile Device Detected
    }
    return deviceStatus;

}
 

Upload Image by external URL in asp.net

Task: Upload Image using external URL on our website using asp.net.

Description: Sometime we need to upload image option using URL of image(from some external resources). So that we need not to download it and then upload in our website & also need not to use external image link in our website. This code create new image in your website folder(here i used yourfolder).
We can also use it for Data-scrapping(Read Content/images from another website).
We can Resize it also. In older post I describe the resize image with maintain aspect ration here ->  Upload & Resize Image



// Code Start //


 using System.Net;
 using System.IO;
 using System.Drawing;

  public void saveimage(string imageURL)
    {
        Stream imageStream = new WebClient().OpenRead(imageURL);
        System.Drawing.Image img = System.Drawing.Image.FromStream(imageStream);
        string path = Server.MapPath("yourfolder") + "\\test.jpg";
        img.Save(path);
    }



// Code End//

How Convert GridView to Word/Excel Asp.Net C# Code

Task : How convert a gridview to Word Document or in Excel Sheet using asp.net/c#  code.

Description: Some time we need to generate different kind of reports & need to save it in Excel or word Document for Local Reference, Or sending to other's. So here I create a code for achieve this task the first one is conversion data into Excel & second one is for Word Document.

// For pdf converstion we can use third party dll like ITextSharp


C# Code : For GridView To Excel

 protected void btn_excel_Click(object sender, EventArgs e)
    {
          string attachment = "attachment; filename=myreport.xls";
          Response.Cache.SetCacheability(HttpCacheability.NoCache);
          Response.AddHeader("content-disposition", attachment);
          Response.ContentType = "application/ms-excel";
          StringWriter swriter = new StringWriter();
          HtmlTextWriter htmlwriter = new HtmlTextWriter(swriter);
 
          // Create a form to contain the gridview(MyGridView)
          HtmlForm mynewform = new HtmlForm();
          MyGridView.Parent.Controls.Add(mynewform);
          mynewform.Attributes["runat"] = "server";
          mynewform.Controls.Add(MyGridView);
          mynewform.RenderControl(htmlwriter);
          Response.Write(swriter.ToString());
          Response.End();
    }


C# Code : For GridView To Word

    protected void btn_word_Click(object sender, EventArgs e)
    {
          Response.AddHeader("content-disposition""attachment;filename=myreport.doc");
          Response.Cache.SetCacheability(HttpCacheability.NoCache);
          Response.ContentType = "application/vnd.word";
          System.IO.StringWriter swriter = new System.IO.StringWriter();
          System.Web.UI.HtmlTextWriter htmlwriter = new HtmlTextWriter(swriter);
 
          // Create a form to contain the gridview(MyGridView)
          HtmlForm mynewform = new HtmlForm();
          MyGridView.Parent.Controls.Add(mynewform);
          mynewform.Attributes["runat"] = "server";
          mynewform.Controls.Add(MyGridView);
          mynewform.RenderControl(htmlwriter);
          Response.Write(swriter.ToString());
          Response.End();
    }