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  • C# - setting a property by reflection with a string value

    - by David Hodgson
    Hi, I'd like to set a property of an object through reflection, with a value of type string. So, for instance, suppose I have a Ship class, with a property of Latitude, which is a double. Here's what I'd like to do: Ship ship = new Ship(); string value = "5.5"; PropertyInfo propertyInfo = ship.GetType().GetProperty("Latitude"); propertyInfo.SetValue(ship, value, null); As is, this throws an Argument exception (Object of type 'System.String' cannot be converted to type 'System.Double'). How can I convert value to the proper type, based on propertyInfo?

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  • How do I create interface methods using .tlb types in VS C++?

    - by Steven
    Background: The .TLB file contains interfaces written in language 'X'. I don't have .h, .idl, .tlh, or any other header files - just the .TLB file. Language 'X' does not export compatible .h, .idl, etc. I use the VS wizard to add an ATL simple object to my ATL project. I want to add a method to the interface of my simple ATL object that uses one of the .TLB defined types for a parameter. // Something like the following in the .idl file: interface ISomeInterface : IUnknown { HRESULT SomeMethod([in] ITypeFromTLB* aVal); // ITypeFromTLB declared in .TLB file. }; How can I do this? I'm hoping for a wizard, or a line in the .idl interface declaration that would bring in the .tlb information. midl's include (no .tlb), import (no tlb), and importlib (library only) don't seem to provide a solution (I need proxy/stub to be working, so I cannot put this inside the library declaration with the importlib command). Thanks.

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  • Silverlight 4 accessing WCF Data Services: BeginInvoke frustrations.

    - by Gatmando
    Hi, I'm attempting to follow a pattern for performing WCF data service queries using the Silverlight 4 beta. The following is my code: public CodeTables() { CodeCountries = new ObservableCollection<dsRealHomes.CodeCountries>(); dsRealHomes.RealHomesEntities myClient = null; myClient = staticGlobals.RealHomesContext(); object userState = null; myClient.BeginExecute<dsRealHomes.CodeCountries>(new Uri("CodeCountries"), (IAsyncResult asyncResult) => { Dispatcher.BeginInvoke( () => { var test = myClient.EndExecute<dsRealHomes.CodeCountries>asyncResult).ToList(); } ); }, userState); } This is derived from a number of examples I've come across for WCF data services with silverlight. Unfortunately no matter how I try to implement the code i end up with the following error on 'Dispatcher.BeginInvoke': 'An object reference is required for the non-static field, method, or property (System.Windows.Threading.Dispatcher.BeginInvoke(System.Action)' Thanks

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  • Tools to create class methods interaction diagram

    - by nightcoder
    Let's say I have a MyClass class, with various methods, and let's say that method MyClass.A() calls methods MyClass.B() which calls MyClass.C(). Method MyClass.A() also calls MyClass.D() which also calls MyClass.C() and so on :) Is there any tool to visualize this as a diagram? UPD. I see NDepend can do what I need but it costs too much when I just need to build methods dependency graph and trial limitations are too big (I can't zoom the graph and I can't see anything on a small resulted graph without being able to zoom). So, I'm still looking for alternatives - it should be free or not expensive tool.

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  • iPhone generalPasteboard loses contents if application is closed by an -openURL: call

    - by Kojiro
    I have a method, that puts something on the pasteboard. This method is called one of two ways, one, as an IBAction from a button, the other from another method which afterwards closes the application by doing: [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms:"]]; The problem arises only when the application is not closed using the home button, but is closed using the line above. When that happens, the pasteboard contents are lost. I assume this problem has something to do with the object being cleaned up improperly when it closes this way, but have no idea why it is doing that. I have even tried to intentionally leak the object that gets put on the pasteboard, but it still gets lost on the way out. Here is the method: - (IBAction) copyLink { NSString *stringForPasteboard = @"here is the string"; [[UIPasteboard generalPasteboard] setURL:stringForPasteboard]; [stringForPasteboard release]; }

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  • May a NSManagedObjectContext re-fault objects automatically?

    - by frenetisch applaudierend
    I am trying to create an application which allows background threads to update core data objects while the user might be reading the same data. My approach to this would be to use multiple NSManagedObjectContexts and then before a background thread does a -save: operation, I fetch the object the user is currently working on and fire the fault for all its properties and relationships recursively. This way I have all objects the user could act with in my NSManagedObjectContext without seeing the already updated values. But this can only work if the NSManagedObjectContext cannot decide himself that e.g. memory usage is too high, and starts faulting objects which I do not explicitly reference (other than through the NSManagedObject relationship). So the question is, can the NSManagedObjectContext decide that an object needs to be re-faulted, without intervention from my side? Thanks for your effort, Markus

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  • Nullable Enum nullable type question

    - by Michael Kniskern
    I get the following compilation error with the following source code: Compilation Error: Type of conditional expression cannot be determined because there is no implicit conversion between '' and 'MyEnum' Source Code public enum MyEnum { Value1, Value2, Value3 } public class MyClass { public MyClass() {} public MyEnum? MyClassEnum { get; set; } } public class Main() { object x = new object(); MyClass mc = new MyClass() { MyClassEnum = Convert.IsDBNull(x) : null ? (MyEnum) Enum.Parse(typeof(MyEnum), x.ToString(), true) }; } How can I resolve this error?

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  • Problems installing Moose on Mac (compile Sub::Name prereq)

    - by Leonard
    I'm trying to install Moose (a CPAN module) on my Macbook Pro. It finds a dependency on Sub-Name, and when it tries to install this, gets the following error messages. Any idea as to how I can cure this? XMATH/Sub-Name-0.04.tar.gz^M /usr/bin/make -- OK^M Running make test^M PERL_DL_NONLAZY=1 /opt/local/bin/perl "-MExtUtils::Command::MM" "-e" "test_harness(0, 'blib/lib', 'blib/arch')" t/*.t^M t/smoke....Can't load '/private/var/root/.cpan/build/Sub-Name-0.04-ziHbmm/blib/arch/auto/Sub/Name/Name.bundle' for module Sub::Name: dlopen(/private/var/root/.cpan/build/Sub-Name-0.04-ziHbmm/blib/arch/auto/Sub/Name/Name.bundle, 2): no suitable image found. Did find:^M /private/var/root/.cpan/build/Sub-Name-0.04-ziHbmm/blib/arch/auto/Sub/Name/Name.bundle: mach-o, but wrong architecture at /opt/local/lib/perl5/5.8.9/darwin-2level/DynaLoader.pm line 230.^M at t/smoke.t line 6^M Compilation failed in require at t/smoke.t line 6.^M

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  • Using Symbol MC70 series scanner with native code

    - by Sandeep
    Is it possible to use Symbol MC70 series scanner with native code? I have a Windows Mobile application written using Lazarus(Object pascal) and I want to use it with Symbol MC70. The sdk that they have are for C, .NET and Java. I had a look at the C sdk and it comes with .LIB files which I cannot use with Object Pascal. I have no clue as to how the scanner is working with .NET stuff, I could not see a WIN32 dll in the files provided, maybe it is in the cab file. Any suggestions as to what I should do to get the scanners to work for me. Sandeep

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  • Unique items in Hibernate collections

    - by Rickard Lindberg
    I have defined a collection in Hibernate like this: ... public class Item { ... @ElementCollection List<Object> relatedObjects; } It creates a mapping table with colums item_id and object_id. The problem is that object_id seems to be unique. In other words I can not have two different items being related to the same object. But that is what I want. I would like the combination of item_id and object_id to be unique. How do I do that?

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  • How can I overwrite a System.Drawing.Bitmap onto an existing GDI bitmap?

    - by MusiGenesis
    If I have a .Net Bitmap, I can create from it a GDI bitmap by calling the Bitmap's GetHbitmap() method. Bitmap bmp = new Bitmap(100, 100); IntPtr gdiBmp = bmp.GetHbitmap(); This works fine, but every time you call GetHbitmap, Windows has to allocate new memory for the object that gdiBmp references. What I'd like to do - if possible - is write a function (I know PInvoke will be necessary here) that also generates a GDI bitmap copy of a Bitmap, but that uses an existing object instead of allocating a new one. So it would look something like this (if it were an extension method of Bitmap): //void OverwriteHbitmap(IntPtr gdi) Bitmap bmp1 = new Bitmap(100, 100); IntPtr gdi1 = bmp1.GetHbitmap(); Bitmap bmp2 = new Bitmap(100, 100); bmp2.OverwriteHbitmap(gdi1); How can I do this? I assume I'll need to know the structure of a GDI bitmap, and probably I can use LockBits and BitmapData for this, but I'm not sure exactly how.

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  • What makes MVVM uniquely suited to WPF?

    - by Reed Copsey
    The Model-View-ViewModel is very popular with WPF and Silverlight. I've been using this for my most recent projects, and am a very large fan. I understand that it's a refinement of MVP. However, I am wondering exactly what unique characteristics of WPF (and Silverlight) allow MVVM to work, and prevent (or at least make difficult) this pattern from working using other frameworks or technologies. I know MVVM has a strong dependency on the powerful data binding technology within WPF. This is the one feature which many articles and blogs seem to mention as being the key to WPF providing the means of the strong separation of View from ViewModel. However, data binding exists in many forms in other UI frameworks. There are even projects like Truss that provide WPF-style databinding to POCO in .NET. What features, other than data binding, make WPF and Silverlight uniquely suited to Model-View-ViewModel?

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  • MouseLeave event in Silverlight 3 PopUp control

    - by AKa
    I want use PopUp (System.Windows.Controls.Primitives.PopUp) control to show some context menu. After mouse leaves, should automatically close. But eventhandler for MouseLeave is never executed. Why? SAMPLE: void DocumentLibrary_Loaded(object sender, RoutedEventArgs e) { DocumentLibraryDialog documentLibraryDialog = new DocumentLibraryDialog(); _popUpDocumentLibraryDialog = new Popup(); _popUpDocumentLibraryDialog.Width = 70; _popUpDocumentLibraryDialog.Height = 20; _popUpDocumentLibraryDialog.MouseLeave += new MouseEventHandler(_popUpDocumentLibraryDialog_MouseLeave); _popUpDocumentLibraryDialog.Child = documentLibraryDialog; } void _popUpDocumentLibraryDialog_MouseLeave(object sender, MouseEventArgs e) { Popup currentPopUp = (Popup)sender; if (currentPopUp.IsOpen) (currentPopUp.IsOpen) = false; } Regards Anton Kalcik

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  • [.NET] How to load multiple mscorlib.dll and call their inner functions seperately?

    - by Sean
    Dears, This is for research purpose. I have .Net framework 2.0 installed, and I want to load mscorlib.dll 1.1 dynamiclly to execute its specific inner function. When I wrote this code in C#: static void Main(string[] args) { Assembly assem = Assembly.LoadFrom("C:\\mscorlib_my_private_1.1.dll"); System.Type type = assem.GetType("System.Console"); Type[] typeArray =new Type[1]; typeArray.SetValue(typeof(string),0); System.Reflection.MethodInfo info = type.GetMethod("WriteLine", typeArray); object[] param = new object[1]; param[0] = assem.FullName; type.InvokeMember("WriteLine", System.Reflection.BindingFlags.InvokeMethod, System.Type.DefaultBinder, "", param); } The output is "mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" Not the expected 1.1 version. After Googling a lot, I know that mscorlib.dll is very special, but is it impossible? Cheers~ Sean

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  • Are xlrd and xlwt compatible?

    - by Leo
    I'm trying to create a workbook with python and I need to test the values of different cells to fill it but I'm having some troubles. I use xlrd and xlwt to create and edit the excel file. I've made a little example of my problem and I don't understand why it's not working. import xlwt import xlrd wb = xlwt.Workbook() ws = wb.add_sheet('Test') ws.write(0,0,"ah") cell = ws.cell(0,0) # AttributeError: 'Worksheet' object has no attribute 'cell' print cell.value I had taken for granted that xlrd and xlwt have shared classes which can interact with each other but it doesn't seem to be the case. How do I get the cell value of an open Worksheet object?

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  • rails - named scoped help

    - by sameera207
    Hi All, I want to write a named scoped to get a record from its id. Ex: I have a model called Event and its same as doing Event.find(id) (I dont want to use find inside my controller and I want my controller to use a named scoped (for future flexibility)) So I have written a named scoped named_scope :from_id, lambda { |id| {:conditions = ['id= ?', id] } } and I'm calling it from my controller like Event.from_id(id) But my problems is it returns Event object array not only one object Ex: if I want to get event name I have to write event = Event.from_id(id) event[0].name instead I want to write event = Event.from_id(id) event.name Am I doing something wrong here.. thanks in advance cheers sameera

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  • working with generic lifetime managers in unity config section

    - by Martin Bailey
    I have the following generic lifetime manager public class RequestLifetimeManager<T> : LifetimeManager, IDisposable { public override object GetValue() { return HttpContext.Current.Items[typeof(T).AssemblyQualifiedName]; } public override void RemoveValue() { HttpContext.Current.Items.Remove(typeof(T).AssemblyQualifiedName); } public override void SetValue(object newValue) { HttpContext.Current.Items[typeof(T).AssemblyQualifiedName] = newValue; } public void Dispose() { RemoveValue(); } } How do I reference this in the unity config section. Creating a type alias <typeAlias alias="requestLifeTimeManager`1" type=" UI.Common.Unity.RequestLifetimeManager`1, UI.Common" /> and specifying it as a lifetime manager <types> <type type="[interface]" mapTo="[concretetype]" > <lifetime type="requestLifeTimeManager`1" /> </type> </types> causes the following error Cannot create an instance of UI.Common.Unity.RequestLifetimeManager`1[T] because Type.ContainsGenericParameters is true. How do you reference generic lifetime managers ?

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  • Python: Pretty printing a xml file directly from a tar.gz package

    - by EddyR
    This is the first Python script I've tried to create. I'm reading a xml file from a tar.gz package and then I want to pretty print it. However I can't seem to turn it from a file-like object to a string. I've tried to do it a few different ways including str(), tostring(), etc but nothing is working for me. For testing I just tried to print the string at "print myfile[0:200]" and it always generates "<tarfile.ExFileObject object at 0x10053df10>" import os import sys import tarfile from xml.dom.minidom import parseString tar = tarfile.open("data/ucd.all.flat.tar.gz", "r") getfile = tar.extractfile("ucd.all.flat.xml") myfile = str(getfile) print myfile[0:200] output = parseString(getfile).toprettyxml() print output tar.close()

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  • Interfacing HTTPBuilder and HTMLUnit... some code

    - by Misha Koshelev
    Ok, this isn't even a question: import com.gargoylesoftware.htmlunit.HttpMethod import com.gargoylesoftware.htmlunit.WebClient import com.gargoylesoftware.htmlunit.WebResponseData import com.gargoylesoftware.htmlunit.WebResponseImpl import com.gargoylesoftware.htmlunit.util.Cookie import com.gargoylesoftware.htmlunit.util.NameValuePair import static groovyx.net.http.ContentType.TEXT import java.io.File import java.util.logging.Logger import org.apache.http.impl.cookie.BasicClientCookie /** * HTTPBuilder class * * Allows Javascript processing using HTMLUnit * * @author Misha Koshelev */ class HTTPBuilder { /** * HTTP Builder - implement this way to avoid underlying logging output */ def httpBuilder /** * Logger */ def logger /** * Directory for storing HTML files, if any */ def saveDirectory=null /** * Index of current HTML file in directory */ def saveIdx=1 /** * Current page text */ def text=null /** * Response for processJavascript (Complex Version) */ def resp=null /** * URI for processJavascript (Complex Version) */ def uri=null /** * HttpMethod for processJavascript (Complex Version) */ def method=null /** * Default constructor */ public HTTPBuilder() { // New HTTPBuilder httpBuilder=new groovyx.net.http.HTTPBuilder() // Logging logger=Logger.getLogger(this.class.name) } /** * Constructor that allows saving output files for testing */ public HTTPBuilder(saveDirectory,saveIdx) { this() this.saveDirectory=saveDirectory this.saveIdx=saveIdx } /** * Save text and return corresponding XmlSlurper object */ public saveText() { if (saveDirectory) { def file=new File(saveDirectory.toString()+File.separator+saveIdx+".html") logger.finest "HTTPBuilder.saveText: file=\""+file.toString()+"\"" file<<text saveIdx++ } new XmlSlurper(new org.cyberneko.html.parsers.SAXParser()).parseText(text) } /** * Wrapper around supertype get method */ public Object get(Map<String,?> args) { logger.finer "HTTPBuilder.get: args=\""+args+"\"" args.contentType=TEXT httpBuilder.get(args) { resp,reader-> text=reader.text this.resp=resp this.uri=args.uri this.method=HttpMethod.GET saveText() } } /** * Wrapper around supertype post method */ public Object post(Map<String,?> args) { logger.finer "HTTPBuilder.post: args=\""+args+"\"" args.contentType=TEXT httpBuilder.post(args) { resp,reader-> text=reader.text this.resp=resp this.uri=args.uri this.method=HttpMethod.POST saveText() } } /** * Load cookies from specified file */ def loadCookies(file) { logger.finer "HTTPBuilder.loadCookies: file=\""+file.toString()+"\"" file.withObjectInputStream { ois-> ois.readObject().each { cookieMap-> def cookie=new BasicClientCookie(cookieMap.name,cookieMap.value) cookieMap.remove("name") cookieMap.remove("value") cookieMap.entrySet().each { entry-> cookie."${entry.key}"=entry.value } httpBuilder.client.cookieStore.addCookie(cookie) } } } /** * Save cookies to specified file */ def saveCookies(file) { logger.finer "HTTPBuilder.saveCookies: file=\""+file.toString()+"\"" def cookieMaps=new ArrayList(new LinkedHashMap()) httpBuilder.client.cookieStore.getCookies().each { cookie-> def cookieMap=[:] cookieMap.version=cookie.version cookieMap.name=cookie.name cookieMap.value=cookie.value cookieMap.domain=cookie.domain cookieMap.path=cookie.path cookieMap.expiryDate=cookie.expiryDate cookieMaps.add(cookieMap) } file.withObjectOutputStream { oos-> oos.writeObject(cookieMaps) } } /** * Process Javascript using HTMLUnit (Simple Version) */ def processJavascript() { logger.finer "HTTPBuilder.processJavascript (Simple)" def webClient=new WebClient() def tempFile=File.createTempFile("HTMLUnit","") tempFile<<text def page=webClient.getPage("file://"+tempFile.toString()) webClient.waitForBackgroundJavaScript(10000) text=page.asXml() webClient.closeAllWindows() tempFile.delete() saveText() } /** * Process Javascript using HTMLUnit (Complex Version) * Closure, if specified, used to determine presence of necessary elements */ def processJavascript(closure) { logger.finer "HTTPBuilder.processJavascript (Complex)" // Convert response headers def headers=new ArrayList() resp.allHeaders.each() { header-> headers.add(new NameValuePair(header.name,header.value)) } def responseData=new WebResponseData(text.bytes,resp.statusLine.statusCode,resp.statusLine.toString(),headers) def response=new WebResponseImpl(responseData,uri.toURL(),method,0) // Transfer cookies def webClient=new WebClient() httpBuilder.client.cookieStore.getCookies().each { cookie-> webClient.cookieManager.addCookie(new Cookie(cookie.domain,cookie.name,cookie.value,cookie.path,cookie.expiryDate,cookie.isSecure())) } def page=webClient.loadWebResponseInto(response,webClient.getCurrentWindow()) // Wait for condition if (closure) { for (i in 1..20) { if (closure(page)) { break; } synchronized(page) { page.wait(500); } } } // Return text text=page.asXml() webClient.closeAllWindows() saveText() } } Allows one to interface HTTPBuilder with HTMLUnit! Enjoy Misha

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  • java.lang.OutOfMemory error when fetching records from Database

    - by Nisarg Mehta
    Hi All, When I try to fetch around 20,000 records and return to ArrayList then it throws java heap space error. JdbcTemplate select = new JdbcTemplate(dataSource); String SQL_SELECT_XML_IRP_ADDRESS = " SELECT * FROM "+ SCHEMA +".XML_ADDRESS "+ " WHERE FILE_NAME = ? "; Object[] parameters=new Object[] {xmlFileName}; return (ArrayList<XmlAddressDto> ) select.query(SQL_SELECT_XML_ADDRESS, parameters,new XmAddressMapExt()); Is there any solution for this ? How should i process this effectively ?

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  • XmlDocument from LINQ to XML query

    - by Ben
    I am loading an XML document into an XDocument object, doing a query and then returning the data through a web service as an XmlDocument object. The code below works fine, but it just seems a bit smelly. Is there a cleaner way to take the results of the query and convert back to an XDocument or XmlDocument? XDocument xd = XDocument.Load(Server.MapPath(accountsXml)); var accounts = from x in xd.Descendants("AccountsData") where userAccounts.Contains(x.Element("ACCOUNT_REFERENCE").Value) select x; XDocument xd2 = new XDocument( new XDeclaration("1.0", "UTF-8", "yes"), new XElement("Accounts") ); foreach (var account in accounts) xd2.Element("Accounts").Add(account); return xd2.ToXmlDocument();

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  • Thoughts on moving to Maven in an enterprise environment

    - by Josh Kerr
    I'm interested in hearing from those who either A) use Maven in an enterprise environment or B) tried to use Maven in an enterprise environment. I work for a large company that is contemplating bringing in Maven into our environment. Currently we use OpenMake to build/merge and home-grown software to deploy code to 100+ servers running various platforms (eg. WAS and JBoss). OpenMake works fine for us however Maven does have some ideal features, most importantly being dependency management, but is it viable in a large environment? Also what headaches have/did you incur, if any, in maintaining a Maven environment. Side note, I've read http://stackoverflow.com/questions/861382/why-does-maven-have-such-a-bad-rep, http://stackoverflow.com/questions/303853/what-are-your-impressions-of-maven, and a few other posts. It's interesting seeing the split between developers.

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  • Struts and logging HTTP POST request body

    - by Ivan Vrtaric
    I'm trying to log the raw body of HTTP POST requests in our application based on Struts, running on Tomcat 6. I've found one previous post on SO that was somewhat helpful, but the accepted solution doesn't work properly in my case. The problem is, I want to log the POST body only in certain cases, and let Struts parse the parameters from the body after logging. Currently, in the Filter I wrote I can read and log the body from the HttpServletRequestWrapper object, but after that Struts can't find any parameters to parse, so the DispatchAction call (which depends on one of the parameters from the request) fails. I did some digging through Struts and Tomcat source code, and found that it doesn't matter if I store the POST body into a byte array, and expose a Stream and a Reader based on that array; when the parameters need to get parsed, Tomcat's Request object accesses its internal InputStream, which has already been read by that time. Does anyone have an idea how to implement this kind of logging correctly?

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  • Where did System.Design go?

    - by Nilbert
    I am making a C# project in which I am using ScintillaNet, and it says: The referenced assembly "ScintillaNet" could not be resolved because it has a dependency on "System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project. I tried adding a reference to System.Design, but it doesn't exist in my list. Do I need to download it somewhere? I have MS Visual Studio 10.

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