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How can I receive multipart form data in a WCF Service? I have uploaded it using the phone gap file transfer plugin upload function.

Below are the two functions that I'm trying to call:

    ///<summary>
    ///Method for file upload
    ///</summary>
    [OperationContract]
    [WebInvoke(
        Method = "POST",
        BodyStyle = WebMessageBodyStyle.Bare,
        UriTemplate = "Upload")]
    string Upload(Stream data);


    [OperationContract]
    [WebInvoke(BodyStyle = WebMessageBodyStyle.Wrapped, Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, UriTemplate = "UploadImage")]
   string UploadImage();

    // TODO: Add your service operations here

I successfully hit the UploadImage function but I don't know how to read a file from the uploaded data.

When I try 

HttpPostedFile file = HttpContext.Current.Request.Files["recFile"];

I get the error:

    HttpContext.Current.Request.Files   'HttpContext.Current.Request.Files' threw an exception of type 'System.Web.HttpException'   System.Web.HttpFileCollection {System.Web.HttpException}
    base    {"This method or property is not supported after HttpRequest.GetBufferlessInputStream has been invoked."}

This is my web.config file:

<?xml version="1.0"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
     <customErrors mode="RemoteOnly"/>
    <caching>
      <outputCacheSettings>
        <outputCacheProfiles>
          <add name="CacheFor10Seconds" duration="10"
               varyByParam="none" />
        </outputCacheProfiles>
      </outputCacheSettings>
    </caching>
    <httpRuntime maxRequestLength="2000000000"/>
  </system.web>
  <appSettings>

    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="false" />
  </appSettings>
  <system.serviceModel>
    <bindings>
      <webHttpBinding>
            <binding name="webHttpBindingWithJsonP"
                 crossDomainScriptAccessEnabled="true" maxBufferSize="2000000000"
                maxReceivedMessageSize="2000000000"
              transferMode="Streamed"   />
      </webHttpBinding>
    </bindings>
    <behaviors>

      <endpointBehaviors>
        <behavior name="webHttpBehavior">
          <webHttp helpEnabled="true"/>
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true"  />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"
        multipleSiteBindingsEnabled="true" />
    <services>
      <service name="Service.Service1">

        <endpoint name="mexHttpBinding"
                  address="mex"
                  binding="mexHttpBinding"
                  contract="IMetadataExchange"
                  />
        <endpoint address="" behaviorConfiguration="webHttpBehavior"
            binding="webHttpBinding"
                  bindingConfiguration="webHttpBindingWithJsonP"
            contract="Service.IService1" />

      </service>
    </services>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="*" />
        <add name="Access-Control-Allow-Headers" value="Content-Type" />
      </customHeaders>
    </httpProtocol>
  </system.webServer>
</configuration>
John Saunders
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Mohit
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1 Answers1

4

I got the problem it with the Wcf version targetFramework="4.5" issue ,

you have to add below code in web config than the issue get resolve:

<appSettings>

    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="false" />
    <add key="wcf:serviceHostingEnvironment:useClassicReadEntityBodyMode" value="true" />
  </appSettings>

my all the other web Config that i post already here is working fine below is the updated web config setting 

<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
     <customErrors mode="RemoteOnly"/>
    <caching>
      <outputCacheSettings>
        <outputCacheProfiles>
          <add name="CacheFor10Seconds" duration="10"
               varyByParam="none" />
        </outputCacheProfiles>
      </outputCacheSettings>
    </caching>
    <httpRuntime maxRequestLength="2000000000"/>
  </system.web>
<appSettings>

    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="false" />
    <add key="wcf:serviceHostingEnvironment:useClassicReadEntityBodyMode" value="true" />
  </appSettings>
  <system.serviceModel>
    <bindings>
      <webHttpBinding>
            <binding name="webHttpBindingWithJsonP"
                 crossDomainScriptAccessEnabled="true" maxBufferSize="2000000000"
                maxReceivedMessageSize="2000000000"
              transferMode="Streamed"   />
      </webHttpBinding>
    </bindings>
    <behaviors>

      <endpointBehaviors>
        <behavior name="webHttpBehavior">
          <webHttp helpEnabled="true"/>
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true"  />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"
        multipleSiteBindingsEnabled="true" />
    <services>
      <service name="Service.Service1">

        <endpoint name="mexHttpBinding"
                  address="mex"
                  binding="mexHttpBinding"
                  contract="IMetadataExchange"
                  />
        <endpoint address="" behaviorConfiguration="webHttpBehavior"
            binding="webHttpBinding"
                  bindingConfiguration="webHttpBindingWithJsonP"
            contract="Service.IService1" />

      </service>
    </services>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="*" />
        <add name="Access-Control-Allow-Headers" value="Content-Type" />
      </customHeaders>
    </httpProtocol>
  </system.webServer>
</configuration>

This is my Service and IService Code:

[OperationContract]
        [WebInvoke(BodyStyle = WebMessageBodyStyle.Wrapped, Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, UriTemplate = "UploadImage")]
       string UploadImage();



 #region 
        ///<summary>
        ///Metohd to upload image.
        ///</summary>
       public string UploadImage()
       {
           string JsonString = string.Empty;
           JsonString = AppDomain.CurrentDomain.BaseDirectory;

           try {


               HttpPostedFile file = HttpContext.Current.Request.Files[0];

               ;
               if (file == null)
               {
                   RC.ErrorLog.LogFileWrite("<Exception>File is null</Exception>" + JsonString);
                   return JsonString; 
               }

               string targetFilePath = AppDomain.CurrentDomain.BaseDirectory + @"Images\Upload" + Guid.NewGuid() + file.FileName.ToString();
                file.SaveAs(targetFilePath);
                return file.FileName.ToString();





           }
           catch(Exception e) 
           {

               string errorMessage = RC.ErrorLog.CreateErrorMessage(e);
               RC.ErrorLog.LogFileWrite(errorMessage+JsonString);
               return JsonString;
           }

       }
        #endregion

And below is my JqueryMobile code for PhoneGap

// A button will call this function
//
function captureImage() {
    // Launch device camera application, 
    // allowing user to capture up to 2 images
    debugger;
    navigator.device.capture.captureImage(captureSuccess, captureError, { limit: 2 });
}


function captureSuccess(mediaFiles) {
    var i, len;
    for (i = 0, len = mediaFiles.length; i < len; i += 1) {
        uploadFile(mediaFiles[i]);
    }
}

// Called if something bad happens.
// 
function captureError(error) {
    var msg = 'An error occurred during capture: ' + error.code;
    navigator.notification.alert(msg, null, 'Uh oh!');
}



function uploadFile(mediaFile) {
    var ft = new FileTransfer();
    path = mediaFile.fullPath;
    name = mediaFile.name;
    debugger;
// below varible contain the Server url name that i created by joining defenrent 3 var of //my application
    var objUrl = _ServicesUrl._SecondServicePath + _ServicePage._BaseServicePage + _WcfFunctionUrl._ImageUpload;
    alert("uploadImage");
    ft.upload(path,
        objUrl,
        function (result) {

            alert('Upload success: ' + result.responseCode);
            alert(result.bytesSent + ' bytes sent');
            debugger;
            var abc = JSON.parse(result.Upload);
            alert(abc);

        },
        function (error) {
            alert('Error uploading file ' + path + ': ' + error.code);
        },
        { fileName: name });
}

Hope the answer will help the community.

Mohit
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