C# Discussion Boards - CodeProject

Streaming the response of type byte[]

3-May-12 23:36

dataminers wrote:
thanks your advice...

My advice would be to try the proper forum for your question[^].

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

critical rigion

ammar24423-May-12 6:04

ammar2442

3-May-12 6:04

How to deal with the critical region in the programming language C #. Is there an example of this case or reference explaining that

Re: critical rigion

Wes Aday3-May-12 6:13

Wes Aday

3-May-12 6:13

ammar2442 wrote:
critical region

Like this http://msdn.microsoft.com/en-us/library/system.threading.thread.begincriticalregion.aspx[^]?

Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
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Re: critical rigion

Bernhard Hiller3-May-12 21:23

Bernhard Hiller

3-May-12 21:23

With the .Net framework, lock() statements are more common than "critical regions". See also http://msdn.microsoft.com/en-us/magazine/cc188793.aspx[^] for a comparison.

Re: critical rigion

Abhinav S3-May-12 22:00

Abhinav S

3-May-12 22:00

The Thread class has a critical region method[^] that you could use.

There are other constructs like Mutex etc that could help you setup a critical region.

NarVish2-May-12 22:51

2-May-12 22:51

I'm trying to write a client for a webservice method, which responds with byte[]
I would like to stream it because byte[] will be failed if there is large file. I changed Transfer Mode and Encoding to Streamed and Mtom respectively. I commented XMLTypeAttribute declaration in reference file for the byte[] class. Please correct the code.
Reference.cs

/// <remarks/>
    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "2.0.50727.4016")]
    [System.SerializableAttribute()]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    //[System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true, Namespace="http//tempuri.org/sample/types")]
    public partial class echoBinaryDataResponse : object, System.ComponentModel.INotifyPropertyChanged {
        
        private byte[] paramField;
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(DataType = "base64Binary", Order = 0)]
        public byte[] param
        {
            get {
                return this.paramField;
            }
            set {
                this.paramField = value;
                this.RaisePropertyChanged("param");
            }
        }

My client call
-----------

ServiceReference1.echoBinaryData echo = new ServiceReference1.echoBinaryData();
MemoryStream str = new MemoryStream(myByteArray);
echo.param = str; 
ServiceReference1.echoBinaryDataResponse echoResp = new ServiceReference1.echoBinaryDataResponse();
ServiceReference1.SamplePortTypeClient sample = new ServiceReference1.SamplePortTypeClient();
sample.echoBinaryData(echo);-----getting exception here

Note: myByteArray is of type byte[];

Richard MacCutchan2-May-12 22:53

2-May-12 22:53

NarVish wrote:
sample.echoBinaryData(echo);-----getting exception here

What exception?

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

NarVish2-May-12 23:31

2-May-12 23:31

Sorry, forgot to add the exception
Exception:There was an error reflecting 'echoBinaryData'.

Richard MacCutchan3-May-12 0:10

3-May-12 0:10

You need to trap this with your debugger or add some more code to identify the inner exception. "There was an error" tells us nothing.

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

NarVish3-May-12 0:42

3-May-12 0:42

Irrespective of above exceptions, can u just guide me to stream byte array (which comes as response of webmethod)

Richard MacCutchan3-May-12 0:54

3-May-12 0:54

Sorry, not something I have much experience of. Try the articles section or the MSDN documentation.

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

NarVish3-May-12 2:03

Enter-PSSession : Connecting to remote server failed

3-May-12 2:03

I found this article and it soved my issue. Thanks for your replies

http://blogs.msdn.com/b/carlosfigueira/archive/2011/03/25/wcf-streaming-inside-data-contracts.aspx[^]

Sebastian T Xavier2-May-12 20:30

Sebastian T Xavier

2-May-12 20:30

Hello,

I was trying to connect to a machine(192.168.1.194); using powershell using the following query Enter-PSSession 192.168.1.194. But I got the following error.

Enter-PSSession : Connecting to remote server failed with the following error message : Access is denied. For more information, see the about_Remote_Troubleshooting Help topic.At line:1 char:16
+ Enter-PSSession <<<< 192.168.1.194
+ CategoryInfo : InvalidArgument: (192.168.1.194:String) [Enter-PSSession], PSRemotingTransportException
+ FullyQualifiedErrorId : CreateRemoteRunspaceFailed

Can you help me to solve this? Any help would be appreciated.

Thanks & Regards

Sebastian

Re: Enter-PSSession : Connecting to remote server failed

Richard MacCutchan2-May-12 22:52

How to get video stream from usb cam buffer

2-May-12 22:52

1. This is nothing to do with C#.
2. You already asked here[^].

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

bunyamin_2-May-12 4:45

bunyamin_

2-May-12 4:45

hi all,
I have an image processing homework, object tracking. But how can I get video stream from usb cam buffer. Before writing disk. usb cam use YUV format I need just Y (gray level) how can I get? thnx.

can't found provider sqlserver

MemberDotNetting2-May-12 1:39

MemberDotNetting

2-May-12 1:39

Hi,

i use Visual C# express 2010 to develop my application.

I installed sql server 2008, I tried to generate the database from EDM and when I want to connect to sql server I can't find the provider of Microsoft Sql Server

Re: can't found provider sqlserver

Wes Aday2-May-12 1:45

Wes Aday

2-May-12 1:45

MemberDotNetting wrote:
provider of Microsoft Sql Server

Why not? Is SQL Server running? Can you connect using the management studio?

MemberDotNetting wrote:
I installed sql server 2008

Did you configure it after you was done installing it?

Re: can't found provider sqlserver

MemberDotNetting2-May-12 2:06

MemberDotNetting

2-May-12 2:06

yes i can connect from mangemenet studio and i configured it

Re: can't found provider sqlserver

egenis2-May-12 2:03

egenis

2-May-12 2:03

Either your Visual Studio installation is corrupt or you might need to install vs2010 sp1

c# windows form & google api v3

mrx1002-May-12 0:39

2-May-12 0:39

hi all, i use c# windows form application
& i want to change latitude & longitude in google api v3 JavaScript code

var myLatlng = new google.maps.LatLng(30.050144, 31.240042);

according to
C# form latitude text box & longitude text box entered value
I can display the page in webbrowser control but it's static
how can i do this???
thanks in advance

Richard MacCutchan2-May-12 2:42

2-May-12 2:42

This is the third time you have asked this question but you have not explained which part does not work.

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

mrx1002-May-12 4:38

2-May-12 4:38

var myLatlng = new google.maps.LatLng(30.050144, 31.240042);

this javascript code works but,

i want to replace the static values of latitude (30.050144) & longitude (31.240042)
in javascript code
with any value entered by user in latitude textbox
& longitude textbox

mrx1002-May-12 4:49

2-May-12 4:49

this code i use in html page

<%--!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

--%>

html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100% }

function initialize() {
var myOptions = {
center: new google.maps.LatLng(30.04866, 31.23688),

zoom: 8,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
var myLatlng = new google.maps.LatLng(30.050144, 31.240042);

var myOptions = {
zoom: 20,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);

var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: "Hello World!"
});

}

&

this code i have used in c# form

StringBuilder queryAddress = new StringBuilder();

queryAddress.Append("file:///C:/Users/mrx1000/documents/visual studio 2010/Projects/testgoogleapi3/testgoogleapi/HTMLPage1.htm");

webBrowser1.Navigate(queryAddress.ToString());

this image for my form in running

http://www.mediafire.com/?rqckg28xb4rlahb

as you see i didn't enter anything in latitude text box or longitude text box

i find away but it's very difficult in this example & when i use it gives me errors

// webBrowser1.DocumentText =
//"" +
//"function test(message) { alert(message); }" +
//"" +
//"";

what i should i do now?

loyal ginger2-May-12 9:21

loyal ginger

2-May-12 9:21

Your C# WinForm application with webbrowser control embedded in the form can use the following ways to achieve two-way communication between your C# code and the JavaScript code loaded by the webbrowser control.

From JavaScript to C#, follow these steps:

1. Create a member function in C#. In this example, suppose we have a function called "report_location":

public void report_location(double latitude, double longitude)
{
    //you can do whatever you want to do in your C# function here
}

2. From your JavaScript code whenever you need to call the above C# function, do it like this:

JavaScript

window.external.report_location(...);

In the above function call the "..." represents the arguments you pass to the function. Use whatever arguments you need to use. For example if you are using Google Maps API and you add a listener to the map's click event, the function will be like this:

JavaScript

google.maps.event.addListener(
    map,
    'click',
    function(event){
        window.external.report_location(
            event.latLng.lat(),
            event.latLng.lng()
        );
    }
);

Your C# code will be able to get the clicked location's latitude/longitude.

From C# to JavaScript, follow these steps: (These will answer your specific question.)

1. In your JavaScript code create a function. In this example, suppose we have a function called "set_location":

JavaScript

function set_location(latitude, longitude){
    //this is your existing statement
    //var myLatlng = new google.maps.LatLng(30.050144, 31.240042);
    //this is the new statement
    var myLatlng = new google.maps.LatLng(latitude, longitude);
    //do whatever you want to do...
}

2. In your C# code whenever you need to call the above function to set the location, do it like this (suppose your webbrowser control is represented by the variable wb_map:

wb_map.Document.InvokeScript(
    "set_location",
    new string[]{
        "30.050144",
        "31.240042"
    }
);

Of course if the numbers are stored in variables such as latitude, longitude, the above call will be

wb_map.Document.InvokeScript(
    "set_location",
    new string[]{
        latitude.ToString(),
        longitude.ToString()
    }
);

Hope this answers your question. Happy programming!

mrx1003-May-12 7:39