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  • C#: Graphics DrawString to Exactly Place Text on a System.Label

    - by jp2code
    I have overridden the OnPaint method of my Label control in VS2008: void Label_OnPaint(object sender, PaintEventArgs e) { base.OnPaint(e); Label lbl = sender as Label; if (lbl != null) { string Text = lbl.Text; e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; if (myShowShadow) { // draw the shadow first! e.Graphics.DrawString(Text, lbl.Font, new SolidBrush(myShadowColor), myShadowOffset, StringFormat.GenericDefault); } e.Graphics.DrawString(Text, lbl.Font, new SolidBrush(lbl.ForeColor), 0, 0, StringFormat.GenericDefault); } } This works, but I really want to find out how to center the text both vertically and horizontally. I've heard of the MeasureString() method, but my "Text" complicates matters because it could include page breaks. Could someone guide me with how to do this?

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  • Checking existence of file types via extensions bash.

    - by Tommy
    Hi, I need to test if various file types exist in a directory. I've tried $ [ -f *.$fileext] where fileext is the file extension but that does not seem to work. Both of these methods work function checkext() { fileext=$1 ls *.$fileext>/dev/null 2>&1 if [ $? -eq 0 ] then echo "We have $fileext files!" else echo "We don't have any $fileext files!" fi } and function checkext2() { extention=$1 filescheck=(`ls *.$1`) len=${#filescheck[*]} if [ $len -gt 0 ] then echo "We have $extention files!" else if [ $len -eq 0 ] then echo "We don't have any $extention files!" else echo "Error" fi fi } The second method is less tidy as any ls error is shown so I prefer method 1. Could people please suggest any improvements, more elegant solutions e.t.c

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  • ClassNotFoundException error in implementing Bayesian algorithm in Apache Mahout on Hadoop

    - by Shweta
    Hi, I have a problem in executing the Bayesian algorithm in Mahout. I built it with Maven and the job file is in target directory. When run from terminal using hadoop, I'm getting the ClassNotFoundException error. What should be done? $HADOOP_HOME/bin/hadoop jar mahout-core-0.3-SNAPSHOT.job org.apache.mahout.classifier.bayes.mapreduce.bayes.bayesdriver -i test -o output Exception in thread "main" java.lang.ClassNotFoundException: org.apache.mahout.classifier.bayes.mapreduce.bayes.bayesdriver at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at org.apache.hadoop.util.RunJar.main(RunJar.java:149)

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  • How to add pdfsharp lib in C#

    - by Royson
    i am new to C#.net,i had downloaded pdfsharp lib. but how to add those lib in our project. My project is create a pdf file.Plz provide me step/step instruction. After unziping it has 32 folders. i tried by coping it in my pro folder. but same error come. "The type or namespace name 'PdfSharp' could not be found (are you missing a using directive or an assembly reference?)"

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  • How to install Emgu CV wrapper?

    - by Eduardo
    Hi mates! I found a simillar question but the answer didn´t help me! SO I´m trying to install Emgu CV wrapper. I´m following the steps presentes on the website. Unfortunatelly I´m not able to build the examples...It gives me build failed... Maybe I´m missing something . I´m using visual studio 2088 and windows xp. Anybody could help me? Rgds

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  • No-Model Formtastic Form

    - by Kevin Sylvestre
    I am looking to reproduce the following with Formtastic: <% form_tag '/search', :method => 'get' do %> <%= text_field_tag :q, params[:q] %> <% end %> So far I have: <% semantic_form_for :search, :html => { :method => :get } do |form| %> <% form.inputs do %> <%= form.input :q %> <% end %> <% end %> However, this requires access to the parameter hash using: params[:search][:q] Instead of my required: params[:q] I'd like to use Formtastic for all forms in the application I am working on, and so far I have only had problems with this one. Any ideas?

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  • PayPal - CreateRecurringPaymentsProfile - is this request valid?

    - by PHP thinker
    I sending this request to make a recurring paypent (SOAP request to SandBox), but in response I get error message about missing token and other fields invalid (Missing Token or payment source). What could be wrong with this CreateRecurringPaymentsProfile request? <?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/1999/XMLSchema" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"> <SOAP-ENV:Header> <RequesterCredentials xmlns="urn:ebay:api:PayPalAPI" SOAP-ENV:mustUnderstand="1"> <Credentials xmlns="urn:ebay:apis:eBLBaseComponents"> <Username>xxxxx_biz_api1.gmail.com</Username> <Password>xxxxxxx</Password> <Subject/> </Credentials> </RequesterCredentials> </SOAP-ENV:Header> <SOAP-ENV:Body> <CreateRecurringPaymentsProfileReq xmlns="urn:ebay:api:PayPalAPI"> <CreateRecurringPaymentsProfileRequest> <Version xmlns="urn:ebay:apis:eBLBaseComponents" xsi:type="xsd:string">58.0</Version> <CreateRecurringPaymentsProfileRequestDetails> <RecurringPaymentsProfileDetails xmlns="urn:ebay:apis:eBLBaseComponents"> <BillingStartDate></BillingStartDate> </RecurringPaymentsProfileDetails> <ScheduleDetails> <Description>Must match</Description> <PaymentPeriod> <BillingPeriod>Day</BillingPeriod> <BillingFrequency>1</BillingFrequency> <Amount>39.95</Amount> </PaymentPeriod> </ScheduleDetails> <Token>EC-480620864W522011V</Token> </CreateRecurringPaymentsProfileRequestDetails> </CreateRecurringPaymentsProfileRequest> </CreateRecurringPaymentsProfileReq> </SOAP-ENV:Body> P.S. I am sending this request the correct way, after "Doexpresscheckout" command.

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  • C# Pragma to suppress break on thrown error

    - by Courtney de Lautour
    First off I run my applications with exceptions thrown on any error (handled or not). Second I am using a TypeConverter to convert from a user input string to the actual object. Third TypeConverter offers no TryConvert method so I'm stuck using exceptions for validation, using this rather ugly bit of code here: try { this._newValue = null; #pragma Magic_SuppressBreakErrorThrown System.Exception this._newValue = this.Converter.ConvertFromString(this._textBox.Text); #pragma Magic_ResumeBreakErrorThrown System.Exception this.HideInvalidNotification(); } catch (Exception exception) { if (exception.InnerException is FormatException) { this.ShowInvalidNotification(this._textBox.Text); } else { throw; } } I'm finding it rather distracting to have VS break execution every-time I type the - of -1, or some other invalid character. I could use something similar to this but not all the types I'm converting to have a TryParse method either. I'm hoping there may be some way to disable breaking for the section of code within the try without changing my exception settings.

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  • java httpclient post

    - by Eric V
    Hi, I have a question about how to allow my jsp page to issue a post command to the server, and still have the browser fallow the re direction of the posted page. Here are the code snipets: code that does the post (this is inside a jsp file): HttpClient client = new DefaultHttpClient(); client.getParams().setParameter("SUBMITTED", "submitted"); client.getParams().setParameter("xxxxxxxx", purchaser.getemail()); client.getParams().setParameter("xxxxxxxx", purchaser.getsuject()); HttpPost method = new HttpPost(url+"process.jsp"); client.execute(method); here is a snipet of process.jsp if (person.getStatus() == person.ACTIVE) response.sendRedirect("Account.jsp); else if (person.getStatus() == person.ERROR) response.sendRedirect("Error.jsp); I would like the browser to the fallow/goto the redirect from the process.jsp. Does anyone know a tutorial that would help me or Am I going about this the wrong way. Thanks, eric

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  • Is there a better way than this to find out if an IsolatedStorage file exists or not?

    - by Edward Tanguay
    I'm using IsolatedStorage in a Silverlight application for caching, so I need to know if the file exists or not which I do with the following method. I couldn't find a FileExists method for IsolatedStorage so I'm just catching the exception, but it seems to be a quite general exception, I'm concerned it will catch more than if the file doesn't exist. Is there a better way to find out if a file exists in IsolatedStorage than this: public static string LoadTextFromIsolatedStorageFile(string fileName) { string text = String.Empty; using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication()) { try { using (IsolatedStorageFileStream isfs = new IsolatedStorageFileStream(fileName, FileMode.Open, isf)) { using (StreamReader sr = new StreamReader(isfs)) { string lineOfData = String.Empty; while ((lineOfData = sr.ReadLine()) != null) text += lineOfData; } } return text; } catch (IsolatedStorageException ex) { return ""; } } }

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  • More efficient programming than Web.py?

    - by Luke Stanley
    I love webpy, it's really quite Pythonic but I don't like having to add the url mappings and create a class, typically with just 1 function inside it. I'm interested in minimising code typing and prototyping fast. Does anyone have any up and coming suggestions such as Bobo, Bottle, Denied, cherrypy for a lover of webpy's good things? What makes it a good reason? Also I don't mind missing out (strongly) text based templating systems, I use object oriented HTML generation.

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  • Silverlight DataGrid refresh problem

    - by Krimson
    Hi, I have encountered a problem when I refresh the observable collection behind my Silverlight DataGrid (the DataGrid binds to a PagedCollectionView with an ObservableCollection as source). When I clear the observable collection and add the new items to the collection the DataGrid repositions to the top. I want the DataGrid to keep the scroll position. This seems to somewhat happen if I remove the items in the collection one-by-one with the RemoveAt mehtod and the add the new items one-by-one. But why is there this difference between removing all the items at once with the Clear method and removing the items one-by-one with the RemoveAt method? Best Regards, Jesper

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  • Django Formset validation with an optional ForeignKey field

    - by Camilo Díaz
    Having a ModelFormSet built with modelformset_factory and using a model with an optional ForeignKey, how can I make empty (null) associations to validate on that form? Here is a sample code: ### model class Prueba(models.Model): cliente = models.ForeignKey(Cliente, null = True) valor = models.CharField(max_length = 20) ### view def test(request): PruebaFormSet = modelformset_factory(model = Prueba, extra = 1) if request.method == 'GET': formset = PruebaFormSet() return render_to_response('tpls/test.html', {'formset' : formset}, context_instance = RequestContext(request)) else: formset = PruebaFormSet(request.POST) # dumb tests, just to know if validating if formset.is_valid(): return HttpResponse('0') else: return HttpResponse('1') In my template, i'm just calling the {{ form.cliente }} method which renders the combo field, however, I want to be able to choose an empty (labeled "------") value, as the FK is optional... but when the form gets submitted it doesn't validate. Is this normal behaviour? How can i make this field to skip required validation?

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  • Asynchronous sockets in C#

    - by IVlad
    I'm confused about the correct way of using asynchronous socket methods in C#. I will refer to these two articles to explain things and ask my questions: MSDN article on asynchronous client sockets and devarticles.com article on socket programming. My question is about the BeginReceive() method. The MSDN article uses these two functions to handle receiving data: private static void Receive(Socket client) { try { // Create the state object. StateObject state = new StateObject(); state.workSocket = client; // Begin receiving the data from the remote device. client.BeginReceive( state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state); } catch (Exception e) { Console.WriteLine(e.ToString()); } } private static void ReceiveCallback( IAsyncResult ar ) { try { // Retrieve the state object and the client socket // from the asynchronous state object. StateObject state = (StateObject) ar.AsyncState; Socket client = state.workSocket; // Read data from the remote device. int bytesRead = client.EndReceive(ar); if (bytesRead > 0) { // There might be more data, so store the data received so far. state.sb.Append(Encoding.ASCII.GetString(state.buffer,0,bytesRead)); // Get the rest of the data. client.BeginReceive(state.buffer,0,StateObject.BufferSize,0, new AsyncCallback(ReceiveCallback), state); } else { // All the data has arrived; put it in response. if (state.sb.Length > 1) { response = state.sb.ToString(); } // Signal that all bytes have been received. receiveDone.Set(); } } catch (Exception e) { Console.WriteLine(e.ToString()); } } While the devarticles.com tutorial passes null for the last parameter of the BeginReceive method, and goes on to explain that the last parameter is useful when we're dealing with multiple sockets. Now my questions are: What is the point of passing a state to the BeginReceive method if we're only working with a single socket? Is it to avoid using a class field? It seems like there's little point in doing it, but maybe I'm missing something. How can the state parameter help when dealing with multiple sockets? If I'm calling client.BeginReceive(...), won't all the data be read from the client socket? The devarticles.com tutorial makes it sound like in this call: m_asynResult = m_socClient.BeginReceive (theSocPkt.dataBuffer,0,theSocPkt.dataBuffer.Length, SocketFlags.None,pfnCallBack,theSocPkt); Data will be read from the theSocPkt.thisSocket socket, instead of from the m_socClient socket. In their example the two are one and the same, but what happens if that is not the case? I just don't really see where that last argument is useful or at least how it helps with multiple sockets. If I have multiple sockets, I still need to call BeginReceive on each of them, right?

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  • PHP and Classes: access to parent's public property within the parent class

    - by takpar
    Hi, here is what my code looks like i have two forms: class Form_1 extends Form_Abstract { public $iId = 1; } class Form_2 extends Form_1 { public $iId = 2; } i expect the code behave like this: $oForm = new Form_2; echo $oForm->getId(); // it returns '2' echo $oForm->getParentId(); // i expect it returns '1' here is my Form_Abstract class: class Form_Abstract { public $iId = 0; public function getId() { return $this->iId; } /** this method will be called from a child instance */ public function getParentId() { return parent::$iId; } } but it throws a Fatal Error: Fatal error: Cannot access parent:: when current class scope has no parent please help me with the method getParentId()

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  • Behavior of deployment tool in Visual Studio Express

    - by Bart Silverstrim
    I created a quick game in VS Express (2008) and used the built-in deployment tool (click once?) to create an installer. I took it to another computer, ran it (Windows XP) to install from a burned CD. It created the program but only for the logged in user. Is there a setting I'm missing for installing it to all users on an XP system? Or is this a limitation of the Express edition's installer?

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  • Including MSVRC100.dll in C++ exe

    - by B_
    I created a simple C executable in Visual C++ 2010, but when others tried it they got a missing MSVCR100.dll error. Apparently, the user needs to install the Visual C++ Redistributable Package in order to run the exe. Is there any way I can instead include MSVCR100.dll inside the exe (so it's just one file, not sitting in the same folder) so people can just run the executable and have it work? Thanks for your help.

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  • COM Interop error, class not registered when using MSMQ Library

    - by mattmck
    I've referenced the MSMQ v3 Object Library in a VS2010 C# project only to get: System.Runtime.InteropServices.COMException (0x80040154): Retrieving the COM class factory for component with CLSID {0188401C-247A-4FED-99C6-BF14119D7055} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)). I've registered the library the reference points to: regsvr32 C:\windows\system32\mqoa.dll What am I missing? Assuming this works, what will I have to do at deployment to ensure the app will run on other machines with MSMQ installed?

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  • How to improve the builder pattern?

    - by tangens
    Motivation Recently I searched for a way to initialize a complex object without passing a lot of parameter to the constructor. I tried it with the builder pattern, but I don't like the fact, that I'm not able to check at compile time if I really set all needed values. Traditional builder pattern When I use the builder pattern to create my Complex object, the creation is more "typesafe", because it's easier to see what an argument is used for: new ComplexBuilder() .setFirst( "first" ) .setSecond( "second" ) .setThird( "third" ) ... .build(); But now I have the problem, that I can easily miss an important parameter. I can check for it inside the build() method, but that is only at runtime. At compile time there is nothing that warns me, if I missed something. Enhanced builder pattern Now my idea was to create a builder, that "reminds" me if I missed a needed parameter. My first try looks like this: public class Complex { private String m_first; private String m_second; private String m_third; private Complex() {} public static class ComplexBuilder { private Complex m_complex; public ComplexBuilder() { m_complex = new Complex(); } public Builder2 setFirst( String first ) { m_complex.m_first = first; return new Builder2(); } public class Builder2 { private Builder2() {} Builder3 setSecond( String second ) { m_complex.m_second = second; return new Builder3(); } } public class Builder3 { private Builder3() {} Builder4 setThird( String third ) { m_complex.m_third = third; return new Builder4(); } } public class Builder4 { private Builder4() {} Complex build() { return m_complex; } } } } As you can see, each setter of the builder class returns a different internal builder class. Each internal builder class provides exactly one setter method and the last one provides only a build() method. Now the construction of an object again looks like this: new ComplexBuilder() .setFirst( "first" ) .setSecond( "second" ) .setThird( "third" ) .build(); ...but there is no way to forget a needed parameter. The compiler wouldn't accept it. Optional parameters If I had optional parameters, I would use the last internal builder class Builder4 to set them like a "traditional" builder does, returning itself. Questions Is this a well known pattern? Does it have a special name? Do you see any pitfalls? Do you have any ideas to improve the implementation - in the sense of fewer lines of code?

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  • Displaying FontFamily in Combobox

    - by Torsten
    Hi. My goal is to manipulate the text-styles of my application via DependencyProperties. I got a diagram in which the texts are to be manipulated in size, fontfamily, color, etc. So I'd like to use an interface similar to a rich text editor like Word. I'm using this code in my TextStyleVM http://shevaspace.blogspot.com/2006/12/i-have-some-fun-with-formattedtext_14.html So I have a FontFamilyProperty and a Getter and Setter for it: public static DependencyProperty FontFamilyProperty = DependencyProperty.Register( "FontFamily", typeof(FontFamily), typeof(OutlinedText), new FrameworkPropertyMetadata( SystemFonts.MessageFontFamily, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.AffectsMeasure), new ValidateValueCallback(IsValidFontFamily)); public FontFamily FontFamily { get { return (FontFamily)base.GetValue(FontFamilyProperty); } set { base.SetValue(FontFamilyProperty, value); } } Then there is a ToStyle method, which sets the style for the labels of the diagram, which are to be manipulated: Style style = new Style(); Binding fontFamilyBinding = new Binding("FontFamily"); fontFamilyBinding.Source = this; Setter fontFamilySetter = new Setter(); fontFamilySetter.Property = TextBlock.FontFamilyProperty; fontFamilySetter.Value = fontFamilyBinding; style.Setters.Add(fontFamilySetter); return style; Now this works for a TextBox. The textbox displays the current FontFamily, and if I enter a new, valid FontFamily like Arial into the textbox the FontFamily of the labels are changed. However, what I'd like to have is a combobox, which displays the SystemFonts and where I can choose one FontFamily for my labels. However, the binding doesn't seem to work. Neither the system fonts nor the current fonts of the labels are displayed. The combobox is just empty. This is my xaml: <r:RibbonLabel Content="FontFamily" /> <!--these do not work--> <r:RibbonComboBox SelectedItem="{Binding FontFamily}"/> <r:RibbonComboBox ItemsSource="{Binding FontFamily}"/> <!--this works--> <r:RibbonTextBox Text="{Binding FontFamily}"/> Now, I assume I have to set a different Setter for a ComboBox in the ToStyle Method. But I have no clue, which one. Maybe someting like this: fontFamilySetter.Property = ComboBox.ItemSource; However, if I set that Property, the TextBox still works. So is this the wrong place to start at? I'd also be grateful if someone could hint me to some documentation about using these Style-, Setter-, Binding-key-words, which are used in the ToStyle method, since this is somebody elses code I'm working with.

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  • Retrieve EF4 POCOs using WCF REST services starter kit

    - by muruge
    I am using WCF REST service (GET method) to retrieve my EF4 POCOs. The service seem to work just fine. When I query the uri in my browser I get the results as expected. In my client application I am trying to use WCF REST Starter Kit's HTTPExtension method - ReadAsDataContract() to convert the result back into my POCO. This works fine when the POCO's navigation property is a single object of related POCO. The problem is when the navigation property is a collection of related POCOs. The ReadAsDataContract() method throws an exception with message "Object reference not set to an instance of an object." Below are my POCOs. [DataContract(Namespace = "", Name = "Trip")] public class Trip { [DataMember(Order = 1)] public virtual int TripID { get; set; } [DataMember(Order = 2)] public virtual int RegionID { get; set; } [DataMember(Order = 3)] public virtual System.DateTime BookingDate { get; set; } [DataMember(Order = 4)] public virtual Region Region { // removed for brevity } } [DataContract(Namespace = "", Name = "Region")] public class Region { [DataMember(Order = 1)] public virtual int RegionID { get; set; } [DataMember(Order = 2)] public virtual string RegionCode { get; set; } [DataMember(Order = 3)] public virtual FixupCollection<Trip> Trips { // removed for brevity } } [CollectionDataContract(Namespace = "", Name = "{0}s", ItemName = "{0}")] [Serializable] public class FixupCollection<T> : ObservableCollection<T> { protected override void ClearItems() { new List<T>(this).ForEach(t => Remove(t)); } protected override void InsertItem(int index, T item) { if (!this.Contains(item)) { base.InsertItem(index, item); } } } And this is how I am trying retrieve a Region POCO. static void GetRegion() { string uri = "http://localhost:8080/TripService/Regions?id=1"; HttpClient client = new HttpClient(uri); using (HttpResponseMessage response = client.Get(uri)) { Region region; response.EnsureStatusIsSuccessful(); try { region = response.Content.ReadAsDataContract<Region>(); // this line throws exception because Region returns a collection of related trips Console.WriteLine(region.RegionName); } catch (Exception ex) { Console.WriteLine(ex.Message); } } } Would appreciate any pointers.

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