File Upload from Silverlight using WCF


This article will explain, How to upload a file from SilverLight client to server location using WCF.

To achieve above task, follow the below steps. I am assuming here, that Reader has a basic concept of WCF

  1. Create  WCF Service
  2. Consume in SilverLight client

Follow the Steps below

Step 1

Create and Host the WCF Service.

  1. Create the Contract. This got only one method, which is taking as input a file to upload.
  2. IService1.svc

    using System;

    using System.Collections.Generic;
    using System.Linq;
    using System.Runtime.Serialization;
    using System.ServiceModel;
    using System.Text;
    namespace FileUploadService
        public interface IService1
            void SaveFile(UploadFile UploadFile);

  3. Create the Data Contract. This is going to contain the information about the uploaded file. You could either put this UploadFile Data Contract in same file with contract or in separate file.
  4. [DataContract]

    public class UploadFile

                public string FileName;
                public byte[] File;

  5. Implement the Service. We are simply creating instance of FileStream in create mode and writing the stream into that.


using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using System.Configuration;
using System.Web;
using System.ServiceModel.Activation;
using System.IO;
namespace FileUploadService
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
public class Service1 : IService1
public void SaveFile(UploadFile UploadFile)
FileStream FileStream = new FileStream("E:\\FileUpload\\" + UploadFile.FileName, FileMode.Create);
FileStream.Write(UploadFile.File, 0, UploadFile.File.Length);


<serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
<binding name="ServicesBinding"
<service name="FileUploadService.Service1" behaviorConfiguration="FileUploadService.Service1Behavior">
<endpoint address="" binding="basicHttpBinding" contract="FileUploadService.IService1">
<dns value="localhost"/>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
<behavior name="FileUploadService.Service1Behavior">
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>

Step 2 : Create the Silver Light Client and consume the service

on button click event , open file dialog will allow user to select the file to be uploaded.  and then content of file will get converted in byte array and then we will call the WCF service.


using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.IO;
using FileUpload.ServiceReference1;
using System.Windows.Browser;

namespace FileUpload
    public partial class MainPage : UserControl
        public OpenFileDialog fileDialog = null;
        Service1Client proxy = null;
        public MainPage()
            proxy = new Service1Client();

        private void Button_Click(object sender, System.Windows.RoutedEventArgs e)
            fileDialog = new OpenFileDialog();
            fileDialog.Multiselect = false;
            fileDialog.Filter = "All Files|*.*";
            bool? retval = fileDialog.ShowDialog();
            if (retval != null && retval == true)

              Stream strm = fileDialog.File.OpenRead();
                byte[] Buffer = new byte[strm.Length];
                strm.Read(Buffer, 0, (int)strm.Length);
                UploadFile file = new UploadFile();
                file.FileName = fileDialog.File.Name;
                file.File = Buffer;

                proxy.SaveFileCompleted += new EventHandler<System.ComponentModel.AsyncCompletedEventArgs>(proxy_SaveFileCompleted);


                txtFileDisplayName.Text = " No File Selected ";


   void proxy_SaveFileCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)

            if (e.Error == null)
                txtFileDisplayName.Text = fileDialog.File.Name + "Successfully Saved at ServerLocation";


2 responses to “File Upload from Silverlight using WCF”

  1. Hi Dhananjay

    It was a good post.But how can we upload multiple files from silverlight using wcf.Your response will be really helpful and appreciated for a novice like me.


  2. […] This post is based on post File Upload from Silverlight using WCF. So please read it before proceedi… […]

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Create a website or blog at