I have the following wcf service method which takes Attachment object and the Attachment

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Asked: June 17, 20262026-06-17T08:30:05+00:00 2026-06-17T08:30:05+00:00

I have the following wcf service method which takes Attachment object and the Attachment

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I have the following wcf service method which takes Attachment object and the Attachment class definition is:

    [DataContract]
    public class Attachment
    {
        [DataMember]
        public int AttachmentId { get; set; }
        [DataMember]
        public String DMSFileId { get; set; }
        [DataMember]
        public String FileName { get; set; }
        [DataMember]
        public int? FileSize { get; set; }
        [DataMember]
        public String FileSource { get; set; }
        [DataMember]
        public byte[] File { get; set; }
    }

And the method definition is :

[OperationContract]    
public int AddAttachment(DataTypes.Administration.Attachment attachment)
{
   return AttachmentBusinessLogic.AddAttachment(attachment);
}

When the method is called I get the following exception:
The remote server returned an unexpected response: (413) Request Entity Too Large

Googling the error I came across many binding configuration but none of them worked not the maxReceivedMessageSize nor the readerQuotas.

Here is the web config of both the service and the client:

Service

<system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
</system.serviceModel>

Client

    <system.serviceModel>
        <serviceHostingEnvironment aspNetCompatibilityEnabled="true" />
        <behaviors>
          <endpointBehaviors>
            <behavior name="AdministrationBehavior">
              <dataContractSerializer maxItemsInObjectGraph="2147483647" />
            </behavior>
          </endpointBehaviors>
        </behaviors>
        <bindings>
          <basicHttpBinding>
            <binding name="BasicHttpBinding_IAdministrationService" sendTimeout="00:05:00"
                     openTimeout="00:05:00"
                     receiveTimeout="00:05:00"
                     maxReceivedMessageSize="2147483647"
                     maxBufferSize="2147483647"
                     maxBufferPoolSize="2147483647">
                <readerQuotas maxArrayLength="2147483647"
                              maxStringContentLength="2147483647" />
            </binding>
          </basicHttpBinding>
        </bindings>
        <client>
          <endpoint address="http://localhost:8001/AdministrationService.svc" binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IAdministrationService" contract="AdministrationService.IAdministrationService" name="BasicHttpBinding_IAdministrationService" behaviorConfiguration="AdministrationBehavior" />
    </client>
</system.serviceModel>

Any suggestion on how to overcome this exception please.