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();

    }

create update delete xml in csharp asp.net

//How to create xml file using c#.net asp.net code
//Append Node/ Modify Node in XML using c#.net asp.net
//
using System.Xml;
using System.IO;
 protected void Button1_Click(object sender, EventArgs e)

{
  string filepath = MapPath("xml/XMLFile3.xml"); // path of xml where we want to save it
   create(filepath);
}

private void create(string filepath)    // filepath is path where we want to save xml file
{
   string xml = @"<?xml version='1.0' encoding='utf-8'?>
                    <ParentXMLNode>
                    <Header>
                           <xmlnode1>value1</xmlnode1>
                           <xmlnode2>value2</xmlnode2>
                    </Header>
                    <xmlnode3>value3</xmlnode3>
                    <xmlnode4>value4</xmlnode4>  
                    <Message>
                        <xmlnode5></xmlnode5>
                        <xmlnode5></xmlnode5>
                        <xmlnode6>
                               <Node1></Node1>
                        </xmlnode6>
                     </Message>
                    </ParentXMLNode>";

        XmlDocument docConfig = new XmlDocument();
        docConfig.LoadXml(xml);
        Literal1.Text = "<XMP>" + xml + "</XMP>";
        docConfig.Save(filepath);
    }