RESTful WCF service image upload problem

Question

1 namespace Uploader  
2 {  
3     using System;  
4     using System.IO;  
5     using System.ServiceModel;  
6     using System.ServiceModel.Description;  
7     u         


        

Answer 1

You can try to override any content-type and upload all files as application/octet-stream, or text/plain using an IOperationBehavior.

public class WebContentTypeAttribute : Attribute, IOperationBehavior, IDispatchMessageFormatter
{
    private IDispatchMessageFormatter innerFormatter;
    public string ContentTypeOverride { get; set; }

    public WebContentTypeAttribute(string contentTypeOverride)
    {
        this.ContentTypeOverride = contentTypeOverride;
    }


    // IOperationBehavior
    public void Validate(OperationDescription operationDescription)
    {

    }

    public void ApplyDispatchBehavior(OperationDescription operationDescription, DispatchOperation dispatchOperation)
    {
        innerFormatter = dispatchOperation.Formatter;
        dispatchOperation.Formatter = this;
    }

    public void ApplyClientBehavior(OperationDescription operationDescription, ClientOperation clientOperation)
    {

    }

    public void AddBindingParameters(OperationDescription operationDescription, BindingParameterCollection bindingParameters)
    {

    }

    // IDispatchMessageFormatter
    public void DeserializeRequest(Message message, object[] parameters)
    {
        if (message == null)
            return;

        if (string.IsNullOrEmpty(ContentTypeOverride))
            return;

        var httpRequest = (HttpRequestMessageProperty)message.Properties[HttpRequestMessageProperty.Name];
        httpRequest.Headers["Content-Type"] = ContentTypeOverride;
    }

    public Message SerializeReply(MessageVersion messageVersion, object[] parameters, object result)
    {
        return innerFormatter.SerializeReply(messageVersion, parameters, result);
    }
}

And you would have to modify your Service contract to look like this one

[OperationContract]
[WebInvoke(Method = "POST",UriTemplate = "File/{fileName}")]
[WebContentType("application/octet-stream")]
bool UploadFile(string fileName, Stream fileContents);  

Although, if you are uploading from a webpage, wouldn't the data be posted in a multipart/form-data format?