using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class Service : System.Web.Services.WebService
{
    public Service () 
    {
    }

    [WebMethod]
    public string HelloWorld() {
        return "Hello World";
    }
    [WebMethod]
    public int add(int a, int b)
    {
        return a + b;
    }
    
}

[WebMethod(CacheDuration=30)] //Here 30 is seconds
public int add(int a, int b)
{
return a + b;
}

[WebMethod(CacheDuration=30,Description="Returns added value.")]   
 public int add(int a, int b)
    {
       return a + b;
    }

using myService;

Service service = new Service();
int result = service.add(10, 10);

 [WebMethod]
    public string Upload(string filePath, byte[] file)
    {
        try
        {
            FileStream fs = new FileStream(filePath, FileMode.Create, 
                                                                FileAccess.ReadWrite);
            fs.Write(file, 0, file.Length);
            fs.Close();
            return "OK";

        }
        catch (Exception ex)
        {
            return ex.Message;
        }
    }

using System.IO;
Stream imgStream = UploadFile.PostedFile.InputStream;
int imgLen = UploadFile.PostedFile.ContentLength;
string imgContentType = UploadFile.PostedFile.ContentType;
byte[] imgBinaryData = new byte[imgLen];
int n = imgStream.Read(imgBinaryData, 0, imgLen);

using System;

using System.Data;

using System.Web;

using System.Collections;

using System.Web.Services;

using System.Web.Services.Protocols;

using System.ComponentModel;

using System.IO; 

 

namespace Uploader

{

    /// <summary>

    /// This web method will provide an web method to load any

    /// file onto the server; the UploadFile web method

    /// will accept the report and store it in the local file system.

    /// </summary>

    [WebService(Namespace = "http://tempuri.org/")]

    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

    [ToolboxItem(false)]

    public class FileUploader : System.Web.Services.WebService

    {

[WebMethod]

public string UploadFile(byte[] f, string fileName)

{

    // the byte array argument contains the content of the file

    // the string argument contains the name and extension

    // of the file passed in the byte array

    try

    {

        // instance a memory stream and pass the

        // byte array to its constructor

        MemoryStream ms = new MemoryStream(f);

 

        // instance a filestream pointing to the

        // storage folder, use the original file name

        // to name the resulting file

        FileStream fs = new FileStream(System.Web.Hosting.HostingEnvironment.MapPath

                    ("~/TransientStorage/") +fileName, FileMode.Create); 


        // write the memory stream containing the original

        // file as a byte array to the filestream

        ms.WriteTo(fs); 


        // clean up

        ms.Close();

        fs.Close();

        fs.Dispose(); 


        // return OK if we made it this far

        return "OK";

    }

    catch (Exception ex)

    {

        // return the error message if the operation fails

        return ex.Message.ToString();

    }

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.IO;
 

namespace TestUploader

{

    /// <summary>

    /// A test form used to upload a file from a windows application using

    /// the Uploader Web Service

    /// </summary>

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        } 

 

        private void Form1_Load(object sender, EventArgs e)

        {

            // do nothing

        }

/// <summary>

/// Upload any file to the web service; this function may be

/// used in any application where it is necessary to upload

/// a file through a web service

/// </summary>

/// <param name="filename">Pass the file path to upload</param>

private void UploadFile(string filename)

{

    try

    {

        // get the exact file name from the path

        String strFile = System.IO.Path.GetFileName(filename);

 

        // create an instance fo the web service

        TestUploader.Uploader.FileUploader srv = new

        TestUploader.Uploader.FileUploader();

 

        // get the file information form the selected file

        FileInfo fInfo = new FileInfo(filename);

 

        // get the length of the file to see if it is possible

        // to upload it (with the standard 4 MB limit)

        long numBytes = fInfo.Length;

        double dLen = Convert.ToDouble(fInfo.Length / 1000000);

 

        // Default limit of 4 MB on web server

        // have to change the web.config to if

        // you want to allow larger uploads

        if (dLen < 4)

        {

            // set up a file stream and binary reader for the

            // selected file

            FileStream fStream = new FileStream(filename,

            FileMode.Open, FileAccess.Read);

            BinaryReader br = new BinaryReader(fStream);

 

            // convert the file to a byte array

            byte[] data = br.ReadBytes((int)numBytes);

            br.Close();

 

            // pass the byte array (file) and file name to the web service

            string sTmp = srv.UploadFile(data, strFile);

            fStream.Close();

            fStream.Dispose();

 

            // this will always say OK unless an error occurs,

            // if an error occurs, the service returns the error message

            MessageBox.Show("File Upload Status: " + sTmp, "File Upload");

        }

        else

        {

             // Display message if the file was too large to upload

             MessageBox.Show("The file selected exceeds the size limit for uploads.", "File Size");

         }

    }

    catch (Exception ex)

    {

         // display an error message to the user

         MessageBox.Show(ex.Message.ToString(), "Upload Error");

    }

}

/// <summary>

/// Allow the user to browse for a file

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void btnBrowse_Click(object sender, EventArgs e)

{

    openFileDialog1.Title = "Open File";

    openFileDialog1.Filter = "All Files|*.*";

    openFileDialog1.FileName = "";

    try

    {

        openFileDialog1.InitialDirectory = "C:\\Temp";

    }

    catch

    {

        // skip it

    }

    openFileDialog1.ShowDialog();

    if (openFileDialog1.FileName == "")

        return;

    else

        txtFileName.Text = openFileDialog1.FileName; 

}

/// <summary>

/// If the user has selected a file, send it to the upload method,

/// the upload method will convert the file to a byte array and

/// send it through the web service

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void btnUpload_Click(object sender, EventArgs e)

{

    if (txtFileName.Text != string.Empty)

        UploadFile(txtFileName.Text);

    else

        MessageBox.Show("You must select a file first.", "No File Selected");

}