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  • Silverlight 4.0: How to convert byte[] to image?

    - by xscape
    public Image Base64ToImage(string base64String) { // Convert Base64 String to byte[] byte[] imageBytes = Convert.FromBase64String(base64String); MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length); // Convert byte[] to Image ms.Write(imageBytes, 0, imageBytes.Length); System.Drawing.Image image = System.Drawing.Image.FromStream(ms, true); return image; } I want to convert byte[] to image, however System.Drawing.Image is not supported in Silverlight. Any alternative?

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  • Setting the default value of a C# Optional Parameter

    - by Jaxidian
    Whenever I attempt to set the default value of an optional parameter to something in a resource file, I get a compile-time error of Default parameter value for 'message' must be a compile-time constant. Is there any way that I can change how the resource files work to make this possible? public void ValidationError(string fieldName, string message = ValidationMessages.ContactNotFound) In this, ValidationMessages is a resource file.

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  • A SelfHosted WCF Service over Basic HTTP Binding doesn't support more than 1000 concurrent requests

    - by Krishnan
    I have self hosted a WCF Service over BasicHttpBinding consumed by an ASMX Client. I'm simulating a concurrent user load of 1200 users. The service method takes a string parameter and returns a string. The data exchanged is less than 10KB. The processing time for a request is fixed at 2 seconds by having a Thread.Sleep(2000) statement. Nothing additional. I have removed all the DB Hits / business logic. The same piece of code runs fine for 1000 concurrent users. I get the following error when I bump up the number to 1200 users. System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) --- End of inner exception stack trace --- at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead) --- End of inner exception stack trace --- at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at WCF.Throttling.Client.Service.Function2(String param) This exception is often reported on DataContract mismatch and large data exchange. But never when doing a load test. I have browsed enough and have tried most of the options which include, Enabled Trace & Message log on server side. But no errors logged. To overcome Port Exhaustion MaxUserPort is set to 65535, and TcpTimedWaitDelay 30 secs. MaxConcurrent Calls is set to 600, and MaxConcurrentInstances is set to 1200. The Open, Close, Send and Receive Timeouts are set to 10 Minutes. The HTTPWebRequest KeepAlive set to false. I have not been able to nail down the issue for the past two days. Any help would be appreciated. Thank you.

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  • Response is not available in this context when creation cookie's

    - by Sadegh
    hi i defined one class to create cookie by received parameter's from user. when i want to add cookie to context i receive an exception. My Class public static class ManageCookies { public static void Create(string name, string value) { HttpCookie cookie = new HttpCookie(name); cookie.Value = value; cookie.Expires = DateTime.Now.AddYears(1); HttpContext.Current.Response.Cookies.Add(cookie); } } Occured Exception: Response is not available in this context.

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  • Can any body help to split php source code

    - by joe-on-wp
    hi, can any body help me on separating this example of data that i need to parse and seperate text just like PHPDoc. It is PHP source code. The example string : function one_to_tree() { //bla bla bla return FALSE; } function two_to_tree() { //bla bla bla return FALSE; } function three_to_tree() { if ($sample){ //bla bla bla } return FALSE; } can anybody help me how to seperate above string based on "function" word and create and array. Thank you

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  • itextsharp PdfCopy and landscape pages

    - by Andreas Rehm
    I'm using itextsharp to join mutiple pdf documents and add a footer. My code works fine - except for landscape pages - it isn't detecting the page rotation - the footer is not centerd for landscape: public static int AddPagesFromStream(Document document, PdfCopy pdfCopy, Stream m, bool addFooter, int detailPages, string footer, int footerPageNumOffset, int numPages, string pageLangString, string printLangString) { CreateFont(); try { m.Seek(0, SeekOrigin.Begin); var reader = new PdfReader(m); // get page count var pdfPages = reader.NumberOfPages; var i = 0; // add pages while (i < pdfPages) { i++; // import page with pdfcopy var page = pdfCopy.GetImportedPage(reader, i); // get page center float posX; float posY; var rotation = page.BoundingBox.Rotation; if (rotation == 0 || rotation == 180) { posX = page.Width / 2; posY = 0; } else { posX = page.Height / 2; posY = 20f; } var ps = pdfCopy.CreatePageStamp(page); var cb = ps.GetOverContent(); // add footer cb.SetColorFill(BaseColor.WHITE); var gs1 = new PdfGState {FillOpacity = 0.8f}; cb.SetGState(gs1); cb.Rectangle(0, 0, document.PageSize.Width, 46f + posY); cb.Fill(); // Text cb.SetColorFill(BaseColor.BLACK); cb.SetFontAndSize(baseFont, 7); cb.BeginText(); // create text var pages = string.Format(pageLangString, i + footerPageNumOffset, numPages); cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, printLangString, posX, 40f + posY, 0f); cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, footer, posX, 28f + posY, 0f); cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, pages, posX, 20f + posY, 0f); cb.EndText(); ps.AlterContents(); // add page to new pdf pdfCopy.AddPage(page); } // close PdfReader reader.Close(); // return number of pages return i; } catch (Exception e) { Console.WriteLine(e); return 0; } } How do I detect the page rotation (e.g. landscape) format in this case? The given example works for PdfReader but not for PdfCopy. Edit: Why do I need PdfCopy? I tried copying a word pdf export. Some word hyperlinks will not work when you try to copy pages with PdfReader. Only PdfCopy transfers all needed page informations. Edit: (SOLVED) You need to use reader.GetPageRotation(i);

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  • Can I somehow know which replacement is taking place from within a callback of preg_replace_callback

    - by jayarjo
    I'm using preg_replace_callback to substitute particular tokens within the string. But apart from actual token I need to know as well whether that token was first, second or third in a subject string. Is there any way to access that info? I found an argument $count in preg_replace_callback definition (http://php.net/manual/en/function.preg-replace-callback.php), which counts replacements, but I'm not sure if it is accessible from within callback. Any example of the usage in described context?

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  • Django model fields getter / setter

    - by pistacchio
    Hi, is there something like getters and setters for django model's fields? For example, I have a text field in which i need to make a string replace before it get saved (in the admin panel, for both insert and update operations) and make another, different replace each time it is read. Those string replace are dynamic and need to be done at the moment of saving and reading. As I'm using python 2.5, I cannot use python 2.6 getters / setters. Any help?

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  • xsd and wsdl incorrect file

    - by Gandalf StormCrow
    How to fix corrupted xsd and wsdl files, is there any IDE which can suggest what is wrong? such as eclipse for java code when pressing CTRL + 1 , or where can I find books tutorials to understand formatting of these file types better? thank you Here is concrete message error I have [ERROR] 'item' is already defined line 223 of file:/C:/project/src/main/resources/schema.xsd [ERROR] (related to above error) the first definition appears here line 22 of file:/C:/project/src/main/resources/schema.xsd

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  • Passing JSP parameter to javascript won't work in IE8!

    - by Ronen
    Could really use with some help here... I've got a servlet that generates an XML string (relatively long) which I then pass to a javascript variable in a forwarded jsp file: $(document).ready(function() { ... var itXML = <% out.print((String)request.getAttribute("xml"));% ; ... } This seems to work just fine in Firefox but when I run the same project on IE8 I get a syntax error for this line. Any Ideas? Thanks!

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  • 2D Array values frequency

    - by Morano88
    If I have a 2D array that is arranged as follows : String X[][] = new String [][] {{"127.0.0.9", "60", "75000","UDP", "Good"}, {"127.0.0.8", "75", "75000","TCP", "Bad"}, {"127.0.0.9", "75", "70000","UDP", "Good"}, {"127.0.0.1", "", "70000","UDP", "Good"}, {"127.0.0.1", "75", "75000","TCP", "Bad"} }; I want to know the frequency of each value .. so I27.0.0.9 gets 2. How can I do a general solution for this ? In Java or any algorithm for any language ?

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  • static readonly field initializer vs static constructor initialization

    - by stackoverflowuser
    Below are 2 different ways to initialize static readonly fields. Is there a difference between the 2 approaches? If yes, when should one be preferred over the other? class A { private static readonly string connectionString = WebConfigurationManager.ConnectionStrings["SomeConnection"].ConnectionString; } class B { private static readonly string connectionString; static B() { connectionString = WebConfigurationManager.ConnectionStrings["SomeConnection"].ConnectionString; } } Thanks.

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  • Calling Property Methods from the e.PropertyName property

    - by user275561
    void TheSettings_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) { var settings = IsolatedStorageSettings.ApplicationSettings[StorageSettings] as Dictionary<string, string>; settings[e.PropertyName]= //call the method that has the same property name to get what the value is LoadData(); } Here is What I am trying to do. This is for a Windows Phone 7 series App. I am trying to determine what values got changed when the user changes the settings on the settings page and just save that.

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  • windows phone deserialization json

    - by user2042227
    I have a weird issue. so I am making a few calls in my app to a webservice, which replies with data. However I am using a token based login system, so the first time the user enters the app I get a token from the webservice to login for that specific user and that token returns only that users details. The problem I am having is when the user changes I need to make the calls again, to get the new user's details, but using visual studio's breakpoint debugging, it shows the new user's token making the call however the problem is when the json is getting deserialized, it is as if it still reads the old data and deserializes that, when I exit my app with the new user it works fine, so its as if it is reading cached values, but I have no idea how to clear it? I am sure the new calls are being made and the problem lies with the deserializing, but I have tried clearing the values before deserializing them again, however nothing works. am I missing something with the json deserializer, how van I clear its cached values? here I make the call and set it not to cache so it makes a new call everytime: client.Headers[HttpRequestHeader.CacheControl] = "no-cache"; var token_details = await client.DownloadStringTaskAsync(uri); and here I deserialize the result, it is at this section the old data gets shown, so the raw json being shown inside "token_details" is correct, only once I deserialize the token_details, it shows the wrong data. deserialized = JsonConvert.DeserializeObject(token_details); and the class I am deserializing into is a simple class nothing special happening here, I have even tried making the constructor so that it clears the values each time it gets called. public class test { public string status { get; set; } public string name{ get; set; } public string birthday{ get; set; } public string errorDes{ get; set; } public test() { status = ""; name= ""; birthday= ""; errorDes= ""; } } uri's before making the calls: {https://whatever.co.za/token/?code=BEBCg==&id=WP7&junk=121edcd5-ad4d-4185-bef0-22a4d27f2d0c} - old call "UBCg==" - old reply {https://whatever.co.za/token/?code=ABCg==&id=WP7&junk=56cc2285-a5b8-401e-be21-fec8259de6dd} - new call "UBCg==" - new response which is the same response as old call as you can see i did attach a new GUID everytime i make the call, but then the new uri is read before making the downloadstringtaskasync method call, but it returns with the old data

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  • When I mark a property as transient, does the type matter?

    - by mystify
    For example, I make a fullName property and set it to transient. Does it matter what data type that property is, in this case? For example, does it matter if it's set to int or string? As far as I get it, a transient property is almost "ignored" by Core Data. I make my accessors for that and when someone accesses fullName, I simply construct a string and return that. Did I miss something?

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  • passing custom object as parameter to a webmethod of asp.net web service

    - by Jon
    Hi, I have a custom class declared as follows (in vb.net) <Serializable()> _ Public Class NumInfo Public n As String Public f As Integer Public fc As char() Public t As Integer Public tc As char() Private validFlag As Boolean = True Public Sub New() End Sub 'I also have public properties(read/write) for all the public variablesEnd Class In my service.asmx codebehind class I have a webmethod as follows: <WebMethod()> _ <XmlInclude(GetType(NumInfo))> _ Public Function ConvertTo(ByVal info As NumInfo) As String Return mbc(info)'mbc is another function defined in my service.asmx "service" class End Function The problem is that when I start debugging it to test it, the page that I get does not contain any fields where I could input the values for the public fields of numInfo. How do I initialise the class? There is no "Invoke" button either. All I see are soap details as below: ConvertToTestThe test form is only available for methods with primitive types as parameters.SOAP 1.1The following is a sample SOAP 1.1 request and response. The placeholders shown need to be replaced with actual values.POST /Converter/BC.asmx HTTP/1.1Host: localhostContent-Type: text/xml; charset=utf-8Content-Length: lengthSOAPAction: "http://Services/ConvertTo"<?xml version="1.0" encoding="utf-8"?> <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Body> <ConvertTo xmlns="http://Services/"> <info> <n>string</n> <f>int&lt/f> <fc> <char>char</char> <char>char>/char> </fc>..etc.. What am I doing wrong? For the record I tried replacing char() with string to see if it was the array causing problems but that didn't help either. I'm fairly new to web services. I tried replacing the custom object parameter with a primitive parameter just to check how things worked and it rendered a page with an input field and invoke button. I just can't seem to get it working with custom object. Help!

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  • c# writing object to binary file

    - by user209293
    Hi I have to write an object in to binary file.My struct looks like this. Struct Company { int numberofemployees list of Struct Employee. } Struct Employee { string EmployeeName; string Designation; } What is the best way to do the above operation? Regards Raju

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  • Python4Delphi: Returning a python object in a function. (DelphiWrapper)

    - by Gabriel Fonseca
    I am using python4delphi. ow can I return an object from a wrapped Delphi class function? Code Snippet: I have a simple Delphi Class that i wrapped to Python Script, right? TSimple = Class Private function getvar1:string; Public Published property var1:string read getVar1; function getObj:TSimple; end; ... function TSimple.getVar1:string; begin result:='hello'; end; function TSimple.getObj:TSimple; begin result:=self; end; I made the TPySimple like the demo32 to give class access to the python code. My python module name is test. TPyDado = class(TPyDelphiPersistent) // Constructors & Destructors constructor Create( APythonType : TPythonType ); override; constructor CreateWith( PythonType : TPythonType; args : PPyObject ); override; // Basic services function Repr : PPyObject; override; class function DelphiObjectClass : TClass; override; end; ... { TPyDado } constructor TPyDado.Create(APythonType: TPythonType); begin inherited; // we need to set DelphiObject property DelphiObject := TDado.Create; with TDado(DelphiObject) do begin end; Owned := True; // We own the objects we create end; constructor TPyDado.CreateWith(PythonType: TPythonType; args: PPyObject); begin inherited; with GetPythonEngine, DelphiObject as TDado do begin if PyArg_ParseTuple( args, ':CreateDado' ) = 0 then Exit; end; end; class function TPyDado.DelphiObjectClass: TClass; begin Result := TDado; end; function TPyDado.Repr: PPyObject; begin with GetPythonEngine, DelphiObject as TDado do Result := VariantAsPyObject(Format('',[])); // or Result := PyString_FromString( PAnsiChar(Format('(%d, %d)',[x, y])) ); end; And now the python code: import test a = test.Simple() # try access the property var1 and everything is right print a.var1 # work's, but.. b = a.getObj(); # raise a exception that not find any attributes named getObj. # if the function returns a string for example, it's work.

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