у других людей всё получалось использую вот такой конфиг:
<?xml version="1.0"?>

<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=169433
-->

<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />

<httpRuntime
executionTimeout="1200"
maxRequestLength="102400"
useFullyQualifiedRedirectUrl="false"
minFreeThreads="8"
minLocalRequestFreeThreads="4"
appRequestQueueLimit="100" />
</system.web>
<system.diagnostics>
<sharedListeners>
<add name="WcfListener"
type="System.Diagnostics.XmlWriterTraceListener" initializeData="d:\log.svclog"
/>
</sharedListeners>
<sources>
<!-- switchValue attribute has no impact on MessageLogging -->
<source name="System.ServiceModel.MessageLogging">
<listeners>
<add name="WcfListener" />
</listeners>
</source>
<source name="System.ServiceModel"
switchValue="Warning, ActivityTracing"
propagateActivity="true" >
<listeners>
<add name="WcfListener" />
</listeners>
</source>
</sources>
</system.diagnostics>
<system.serviceModel>
<diagnostics>
<messageLogging logEntireMessage="true"
logMalformedMessages="true"
logMessagesAtServiceLevel="true"
logMessagesAtTransportLevel="true"
maxMessagesToLog="30000000"
maxSizeOfMessageToLog="2000"/>
</diagnostics>
<behaviors>
<serviceBehaviors>
<behavior name="">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false"/>
<dataContractSerializer maxItemsInObjectGraph="2147483647"/>
<bufferedReceive maxPendingMessagesPerChannel="2147483647"/>
<serviceThrottling maxConcurrentCalls="1000" maxConcurrentInstances="1000" maxConcurrentSessions ="1000"/>
</behavior>
</serviceBehaviors>
</behaviors>
<bindings>
<basicHttpBinding>
<binding name="" maxReceivedMessageSize="300000000" maxBufferSize="300000000">
<readerQuotas maxArrayLength="30000000" maxStringContentLength="300000000"/>
</binding>
</basicHttpBinding>
</bindings>
<serviceHostingEnvironment multipleSiteBindingsEnabled="True" aspNetCompatibilityEnabled="true"/>
</system.serviceModel>
<connectionStrings>
<add name="connString"
connectionString="Server=BY047\SQLEXPRESS;Database=TRI_Portal_DataBase;Trusted_Connection=True;"
providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>

но у меня в этих конфигах выдаёт ошибку в 2х местах, не знаю что делать

но у меня не работаеn:

<bufferedReceive maxPendingMessagesPerChannel="2147483647"/>
пишет что он не является потомком behavior

<serviceHostingEnvironment multipleSiteBindingsEnabled="True" aspNetCompatibilityEnabled="true"/>
атрибут multipleSiteBindingsEnabled не допускается

всё равно не работает
может всё дело в этом грёбаном silverlight
сейчас попробую передать файл пару метров с консоли

попробовал с консоли послать

static void Main(string[] args)
{
Service1Client basereader = new Service1Client();
FileInfo selectedFile = new FileInfo(@"d:\folder.jpg");
byte[] fileContent = new byte[selectedFile.Length];
using (FileStream fs = selectedFile.OpenRead())
{
Console.WriteLine(fs.Length);
fs.Read(fileContent, 0, Convert.ToInt32(fs.Length));
fs.Close();
}


try
{
basereader.SavePic(fileContent, 13);
}
catch(Exception e)
{
Console.WriteLine(e);
TextWriter text = new StreamWriter(@"D:\error.txt");
text.Write(e);
}
Console.Read();

}

ошибка:

System.ServiceModel.ProtocolException: The formatter threw an exception while trying to deserialize the message: Error in deserializing body of request message for operation 'SavePic'. The maximum array length quota (16384) has been exceeded while reading XML data. This quota may be increased by changing the MaxArrayLength property on the XmlDictionaryReaderQuotas object used when creating the XML reader. Line 1, position 45451.

Server stack trace:
at System.ServiceModel.Channels.ServiceChannel.ThrowIfFaultUnderstood(Message reply, MessageFault fault, String action, MessageVersion version, FaultConverter faultConverter)
at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOper

мы избежали передачи через сервис, в сильверлайт передаём данные через хэндлер
создали ashx с кодом:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
using System.Web.Services;

namespace TestingTool.Web
{

/// <summary>
/// Summary description for FileUpload
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class FileUpload : IHttpHandler
{

public void ProcessRequest(HttpContext context)
{
HttpRequest request = context.Request;
HttpResponse response = context.Response;
HttpServerUtility server = context.Server;

string fileName = context.Request.Params["filename"];
if (!string.IsNullOrEmpty(fileName))
{
using (Stream inputStream = request.InputStream)
{
#region конструирование пути к папке с картинками
// ..//DBWcfService//data

string folder = System.AppDomain.CurrentDomain.BaseDirectory;

folder = folder.Remove(folder.Length - 1, 1);

while ((folder.Length > 0) && (folder[folder.Length - 1] != '\\'))
folder = folder.Remove(folder.Length - 1, 1);

folder += "DBWcfService\\data";
#endregion

using (FileStream fs = new FileStream(folder + @"\" + fileName, FileMode.OpenOrCreate))
{
byte[] fileContent = new byte[inputStream.Length];
inputStream.Read(fileContent, 0, fileContent.Length);
fs.Write(fileContent, 0, fileContent.Length);
fs.Flush();
}
}
response.Clear();
response.End();
}
}

public bool IsReusable
{
get
{
return false;
}
}
}
}


если бы в silverlight был обычный uploader то не надо было париться вообще с сервисом, а шла бы нормальная закачка