I have a WCF service that returns a stream object. But for some reason i get a corrupt zip file back which i am streaming.
Contract Code
[ServiceContract(Namespace = "http://schemas.acme.it/2009/04/01")]
public interface IFileTransferService
{
[OperationContract(IsOneWay = false)]
FileDownloadReturnMessage DownloadFile(FileDownloadMessage request);
[Code].....
I've been reading quite a few tutorials on web services and xml files and one thing isn't quite clear to me. If I want to create an XML file on the fly the tutorials are pretty straight forward but, I want to grab an existing XML file from the web server and return the whole thing. Do I need to read the XML file and send each individual node or is there a way to send the file all at once? The tutorials imply that the whole file could be a node but I'm not clear on what that entails or if it would work. Also do you have a link to an example?
View 1 RepliesThe users have requested the option to "generate" an excel file representation of GridView contents.
Does anyone know how to do this without saving the file to the server but rather just streaming it to the user from memory?
My below code is working
streaming directly from memory instead of using physical path of server machine then saving the file on client machine
Private Sub generateExcelSheet()
Try
Dim weekFrom As String = DdFromWeek.SelectedValue
Dim weekTo As String = DdToWeek.SelectedValue
[Code]....
1. what is streaming how we download File through Streaming.
2. what is service Behaviour and operation Behaviour In servic Contracts . plz Explain Me In brief
I'm having a problem with file streaming where this file is a video that is streamed to a FLV player.
Essential components for understanding the problem:
- An asp.net page called Viewer.aspx that has de FLV player incorporated in the HTML.
- An asp.net page (It could be an http handler but in this case it's not) called Downloader.aspx that gets a flv file from somewhere on the web and writes it to the Response Output Stream.
Everytime Viewer.aspx is called, it makes Downloader.aspx the source of the the FLV player and the video is correclty presented and streamed into the player.
The problem I am having now is that any user interaction with the page (even typing an URL inside the same website domain on the browser address bar) becames hung until the video download ends.
I can measure this video download with HTTP Watch for example, and confirm that just after the video download into the player ends, the command issued by the user is immediately processed (or the browser goes to another page if the user typed a new address in the browser address bar).
I tought that it could be the limit of 2 connections per domain, but HTTP Watch only shows one active connection (the video download into the FLV player).
Even if it was this 2 connections limit, I think a nice solution would be to somewhat detect the user interaction with the page and abort that video download.
I have a problem with getting jquery to retrieve results from a WCF service. I am hosting the WCF service within IIS and when I attach the debugger to this process I can see that the code is processed successfully. However, when it hits the callback within jquery there is no data??
I have set up a trace on the wcf service and there are no errors. It just seems as though the data is lost after the wcf service method completes.
Here is the jquery code which calls the service:
$.get("http://ecopssvc:6970/ecopsService.svc/Echo", {echoThis: "please work"}, function(data) {
alert("Data Loaded: " + data);
});
Here is the wcf config:
<system.serviceModel>
<services>
<service name="EcopsWebServices.EcopsService" behaviorConfiguration="EcopsServiceBehaviours">
<endpoint address="" behaviorConfiguration="WebBehaviour"
binding="webHttpBinding" bindingConfiguration="" contract="EcopsWebServices.IEcopsServiceContract" />
</service>
</services>
<behaviors>
<endpointBehaviors>
<behavior name="WebBehaviour">
<webHttp />
<enableWebScript />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="EcopsServiceBehaviours">
<serviceMetadata httpGetEnabled="true" httpGetUrl=""/>
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
Here is the service contract:
[ServiceContract]
public interface IEcopsServiceContract
{
[WebGet]
[OperationContract]
string Echo(string echoThis);
}
Here is the Service implementation:
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class EcopsService : IEcopsServiceContract
{
#region IEcopsServiceContract Members
public string Echo(string echoThis)
{
return string.Format("You sent this '{0}'.", echoThis);
}
#endregion
}
How is it possible to return some kind of list from a wcf serivce, this the method in my wcf service
my interface:
[Code]....
and this how my GetRootLocations looks like, It returns IQueryable, I wounder if I can maybee return Iqueryable from my svc-service?
[Code]....
I am developing an application with WCF services. The basic functionaloty of a screen is to provide an entry screen to add particular entity. Once save even fired It will save the data to the database and call the bind method to bind into the grid by refreshing the latest data.
When I am running the site from my source (Visual Studio) , it works perfectly. When the client calls method to fetch the data the WCF service, it returns latest (added) data. But the issue comes in the server when it works with IIS. I deployed the code in the server, once the data added I am getting the old data only. But after two refresh I am getting the latest data.
what required to be done to get the latest record.
I am using ASP.NET AJAX 3.5
I have a web service that is invoked by the ScriptManager that is attempting to return a DataTable to the receiving javascript.
[Code]....
[Code]....
My service method is called successfully.
[Code]....
[Code]....
I am hoping someone can point me in the right direction here. I am trying to create web service that will return ajaxified results. Specifically, I want to write a web service that will fetch email through a secure connection. However, rather then have the web service return every single email, I just want to fetch maybe 5 emails at a time. I've always used Ajax as a client helper technology and not sure how to go about implementing this on a server side, or if its even possible.
I am using ASP.NET/C#, by the way.
I'm going to be calling a webservice that will return me data in xml format. Since the web service is not ready yet, I want to test locally by calling a function that returns the xml. So if I have a sample xml file on my hard-drive, how do I just open it and read it and create an xml string from it? I don't care at this point about parsing anything out; I will do that in the caller and have that written. I just want all the xml back.
View 9 RepliesI am trying to deploy a wcf service. I have created a simple service, basically I have created a new wcf service and tried to deploy it however I get this error
The type 'WCF_Application.Service1', provided as the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found.
I am trying to deploy my service to a subdomain like
https://services.mydomain.com/business
My config looks like this
[Code]....
Ok so I am trying to setup a WCF web service. I thought I had my .svc and webConfig ready to go, but when I hit this service all I get is a blank page.
[Code]....
I'm using a web service and I want to return a list to my client. I am nearly newby at web services and I can't return a List<String> object to my client. But when i call the method it says "Unable to cast object of type 'System.Collections.Generic.List`1[System.String]' to type 'System.String[]'" What should I do?
View 2 RepliesI have an ASP.NET web service which returns an XMLDocument. The web service is called from a Firefox extension using XMLHttpRequest.
var serviceRequest = new XMLHttpRequest();
serviecRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
I consume the result using responseXML. So far so good. But when I iterate through the XML I retrieve nodeValue - nodeValue is always null. When I check the nodeType the nodeType is type 1 (Node.ELEMENT_NODE == 1).
Node.NodeValue states all nodes of type Element will return null.
In my webservice I have created a string with the XML i.e. xml="Hank"
I then create the XmlDocument
XmlDocument doc = new XmlDocument();
doc.LoadXML(string);
I know I can specify the nodetype using using CreateNode. But when I am just building the xml by appending string values is there a way to change the nodeType to Text so Node.nodeValue will be "content of the text node".
I have to return collection of parent and child objects in a web service but I am not being able to solve this.
look below code blocks where i will try to explain my problem:
This is my web method which returns a list of parents
[Code]....
[Code]....
Below is my child Class:
[Code]....
I Need by service contract to return the xml/json result depending on the request type. function which will convert my result set (i am using linq to sql) so that i do not need to create the xml format for the result set by iterating through the table row many times.What is the suitable way to do that.
I need a kind of short cut method which will convert the table data to xml result.Had i been using asp.net mvc i would have been able to generate the xml data by overriding the the ExecuteResult method in the ActionResult and giving Conetnt-Type = "text/xml" as OP.But since i am using Wcf i don't have the controller context(as controller context is the parameter that needs to be passed to Execute Result).
My present code for converting the table data to the xml format is below.
public XDocument UsersLists(string authToken)
{
bool IsAuthenticated = Authenticate(authToken);
XDocument xDoc = new XDocument();
XElement root = new XElement("Users");
[Code]....
I need to eliminate this way of generating xml for each table records.
I am having a webmethod that returns some data.I'm using jquery to call that function with its Content type specified as XML.The problem is that it is working on local machine but not on server.The code i'm using is:
var arrInputs = pnl.getElementsByTagName("input");
str = arrInputs[0].value;
$.ajax({[code]....
Ajaxfinish is defined afterwards and it works fine on local.Is there some more settings i need to do to make it executable
I'm streaming PDFs to the browser, and it works fine. The problem is when someone clicks the save button. On the same server, we have a "Live" and a "test" site. They are identical, and I've verified that all code is identical. However I'm seeing different dialog boxes when the user clicks "Save"
Test site:
- dialog box: "Save A Copy"
- file name: "Document.pdf"
- file type: Adobe PDF
Live site:
- dialog box: "Save As..."
- file name: "Document.aspx"
- file type: Adobe PDF
To make things even more "fun" I've noticed this behavior ONLY with IE8. With Firefox or Chrome clicking save - regardless of which site (test or live) opens the "Save a Copy" dialog box which allows the users to save the file as a PDF instead of a .aspx file.
I am trying to get this to work for quite some time now. I have an asp.net page in which I am trying to play a wav file. The code in the page load event is as follows:
Response.Clear()
Response.ContentType = "audio/wav"
Response.AppendHeader("Content-Disposition", "inline;filename=" + "temp.wav")
Dim filePath As String = Server.MapPath("/temp.wav")
If Not String.IsNullOrEmpty(filePath) Then
'Here I am converting the file to a byte array,as eventually I'll be creating the wav files on the fly
Dim fileBytes As Byte() = GetFileBytes(filePath)
Response.BinaryWrite(fileBytes)
Response.Flush()
End If
The problem I am having is every time I run this page, the windows media player opens up. I would like the audio to be played using some inbuilt plugin in the browser. Something like, when you click on a voice icon, how the sound pops up without opening any player.
If I have the same content in an ashx handler, would it be better?
I could not use the embed tag because, I shall not be having a physical file on the server, it would be generated on the fly using a response stream.
I am using VS 2010 and C#. I am trying to create a pdf file in web application. I am trying to convert a dataset to pdf file. The pdf file is getting generated, but when i try to open the pdf, i am getting the error as "Adobe reader could not open "sample.pdf" because it is either not a supported file type or because the file has been damaged" How to fix this?
View 4 RepliesIE and Firefox (but not Chrome and Opera) not downloading the whole installer sometimes. File should be about 10 MB but is about 5-7 MB after download.I had written source code to download file as diffrent name than name in filesystem which may be the source of trouble. This is my code:
[Code]....
I've got an aspx page that streams jpeg's. It sets the content type and then writes to the response stream. If I view the images directly they work a treat, but if I use fancybox 1.2.6 I get the following.Using fancybox 1.2.1 the images do show.Here is the code that is pushing out the image.
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (Stream responseStream = response.GetResponseStream())
[code]...
I have an ASP.NET Web Forms application. I want to have a button to post back to the server that will use my fields on my form (after validation) as parameters to a server process that will generate a document and stream it back to the browser. I want the form to be updated with some status results.
What is the best way to achieve this? Right now, I've got the button click generating the document and streaming it back tot he browser (it's a Word document and the dialog pops up, and the Word document can be opened successfully) but the page doesn't get updated.
I am streaming HTML content into a Literal control in an ASPX page, and am continually running into a problem where the page loads fine the first time I try it, then subsequent attempts fail to load.
The purpose of the aspx page is to act as a 'broker' to another process that produces streamed HTML output, which then needs to be resolved by the browser.
The reason I'm not just using HtmlTextWriter to stream out the code to the Response object is that the streamed HTML contains framesets, and I am forbidden from modifying that code in any way, so I must keep the streamed code intact. In spite of the fact that frameset HTML hardcoded into the ASPX file would work, it does NOT resolve streamed frameset code!
In any case, streaming into the literal (by creating a string that is assigned to the Literal's Text property) works just fine -- the FIRST time I load that page. If I exit the page, then try to reinstantiate, it FAILS, producing an empty HTML file (containing only "<HTML></HTML>").