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  • Telerik MVC Combobox AutoComplete error

    - by Roachmans
    I am using the Telerik autocomplete option In the header: <script type="text/javascript"> function onAutoCompleteDataBinding(e) { var autocomplete = $('#AutoComplete').data('tAutoComplete'); autocomplete.dataBind(["Product 1", "Product 2", "Product 3"]} </script> In the body of the View: <%=Html.Telerik().AutoComplete() .Name("AutoComplete") .ClientEvents(events => events.OnDataBinding("onAutoCompleteDataBinding")) %> http://demos.telerik.com/aspnet-mvc/combobox/clientsidebinding I have managed to get this working on other applications and it is really quite simple. I have pasted this example on top to show that this one also bombs out on : this.trigger = new $t.list.trigger(this); Think i might have mixed up the .js files and now my auto complete is not working. Any sugesions which js files and in what order they must be for this to work right My Page master relevant parts: <body> <% Html.Telerik().ScriptRegistrar() .DefaultGroup(group => group .Add("MicrosoftAjax.js") .Add("MicrosoftMvcAjax.js") ); %> <div class="MainTableBody"> <asp:ContentPlaceHolder ID="ContentPlaceHolder" runat="server" /> </div> <% Html.Telerik().ScriptRegistrar().Render(); %> </body> </html> In my web.config <add namespace="Telerik.Web.Mvc.UI" /> Any help or comments would be greatly appreciated

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  • C# Application Calling Powershell Script Issues

    - by Ben
    Hi, I have a C# Winforms application which is calling a simple powershell script using the following method: Process process = new Process(); process.StartInfo.FileName = @"powershell.exe"; process.StartInfo.Arguments = String.Format("-noexit \"C:\Develop\{1}\"", scriptName); process.Start(); The powershell script simply reads a registry key and outputs the subkeys. $items = get-childitem -literalPath hklm:\software foreach($item in $items) { Write-Host $item } The problem I have is that when I run the script from the C# application I get one set of results, but when I run the script standalone (from the powershell command line) I get a different set of results entirely. The results from running from the c# app are: HKEY_LOCAL_MACHINE\software\Adobe HKEY_LOCAL_MACHINE\software\Business Objects HKEY_LOCAL_MACHINE\software\Helios HKEY_LOCAL_MACHINE\software\InstallShield HKEY_LOCAL_MACHINE\software\Macrovision HKEY_LOCAL_MACHINE\software\Microsoft HKEY_LOCAL_MACHINE\software\MozillaPlugins HKEY_LOCAL_MACHINE\software\ODBC HKEY_LOCAL_MACHINE\software\Classes HKEY_LOCAL_MACHINE\software\Clients HKEY_LOCAL_MACHINE\software\Policies HKEY_LOCAL_MACHINE\software\RegisteredApplications PS C:\Develop\RnD\SiriusPatcher\Sirius.Patcher.UI\bin\Debug When run from the powershell command line I get: PS M: C:\Develop\RegistryAccess.ps1 HKEY_LOCAL_MACHINE\software\ATI Technologies HKEY_LOCAL_MACHINE\software\Classes HKEY_LOCAL_MACHINE\software\Clients HKEY_LOCAL_MACHINE\software\Equiniti HKEY_LOCAL_MACHINE\software\Microsoft HKEY_LOCAL_MACHINE\software\ODBC HKEY_LOCAL_MACHINE\software\Policies HKEY_LOCAL_MACHINE\software\RegisteredApplications HKEY_LOCAL_MACHINE\software\Wow6432Node PS M: The second set of results match what I have in the registry, but the first set of results (which came from the c# app) don't. Any help or pointers would be greatly apreciated :) Ben

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  • Wix Burn issue: Uninstall fails saying "Found dependent"

    - by vivek chaurasiya
    I have made a burn bundle which encapsulates 2 msi (msi1 , msi2) . In the UI I use checkboxes to ask the user to select which MSI to install. Now if user selects one of the msi to install, installation goes fine. But during Uninstall action, the burn log file says : [][:15]: Detected package: Netfx4Full, state: Present, cached: None [][:15]: Detected package: DummyInstallationPackageId3, state: **Absent**, cached: None [][:15]: Detected package: msi2.msi, state: **Present**, cached: Complete [][:15]: Detect complete, result: 0x0 [][:16]: Plan 3 packages, action: Uninstall [][:16]: Will not uninstall package: msi2.msi, found dependents: 1 [][:16]: Found dependent: {08e74372-83f2-4594-833b-e924b418b360}, name: My Test Application In the install scenario, I chose to install msi2 and NOT msi1. My bundle code looks like: <Bundle Name="My Test Application" Version="1.0.0.0" Manufacturer="Bryan" UpgradeCode="CC2A383C-751A-43B8-90BF-A250F7BC2863"> <Chain> <PackageGroupRef Id='Netfx4Full' /> <MsiPackage Id="DummyInstallationPackageId3" SourceFile="msi1.msi" ForcePerMachine="yes" InstallCondition="var1 = 1" > </MsiPackage> <MsiPackage SourceFile="msi2.msi" Vital="yes" Cache="yes" Visible="no" ForcePerMachine="yes" InstallCondition="var2 = 2" > </MsiPackage> </Chain> My OnDetectPackageComplete() looks like: private void OnDetectPackageComplete(object sender, DetectPackageCompleteEventArgs e) { if (e.PackageId == "DummyInstallationPackageId3" ) { if (e.State == PackageState.Absent) InstallEnabled = true; else if (e.State == PackageState.Present) UninstallEnabled = true; } } What should I do so that the burn bundle is freely able to uninstall the msi which the user selected at the time of install. Besides, If I select both msi to install, then uninstall is working fine. IMO, there is some problem b/w the relation of bundle and the 2 msi. Please help me as I am stuck with this problem.

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  • Python PyQt Timer Firmata

    - by George Cullins
    Hello. I am pretty new to python and working with firmata I am trying to play around with an arduino . Here is what I want to happen: Set arduino up with an LED as a digital out Set potentiometer to analog 0 Set PyQt timer up to update potentiometer position in application Set a threshold in PyQt to turn LED on (Analog in has 1024bit resolution, so say 800 as the threshold) I am using this firmata library : Link Here is the code that I am having trouble with: import sys from PyQt4 import QtCore, QtGui from firmata import * # Arduino setup self.a = Arduino('COM3') self.a.pin_mode(13, firmata.OUTPUT) # Create timer self.appTimer = QtCore.QTimer(self) self.appTimer.start(100) self.appTimer.event(self.updateAppTimer()) def updateAppTimer(self): self.analogPosition = self.a.analog_read(self, 0) self.ui.lblPositionValue.setNum() I am getting the error message: Traceback (most recent call last): File "D:\Programming\Eclipse\IO Demo\src\control.py", line 138, in myapp = MainWindow() File "D:\Programming\Eclipse\IO Demo\src\control.py", line 56, in init self.appTimer.event(self.updateAppTimer()) File "D:\Programming\Eclipse\IO Demo\src\control.py", line 60, in updateAppTimer self.analogPosition = self.a.analog_read(self, 0) TypeError: analog_read() takes exactly 2 arguments (3 given) If I take 'self' out I get the same error message but that only 1 argument is given What is python doing implicitly that I am not aware of? Blockquote

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  • Having problems with uploading photos to TwitPic using OAuth in Objective C on the iPhone

    - by M. Bedi
    I have been working on an iPhone app that has a feature of uploading photos to TwitPic. I have it working with basic authentication. I am trying to get it working with OAuth. I am getting authentication errors. I have studied very carefully the TwitPic documentation. I am authorising the app by displaying a UI Web View and the it returns a PIN value. I enter the PIN value in the app and request the token. I am able to upload status updates to Twitter but not photos. My code is based on some example code from here: Example iPhone app using OAuth Here is my code: NSString *url = @"http://api.twitpic.com/2/upload.json"; NSString *oauth_header = [oAuth oAuthHeaderForMethod:@"POST" andUrl:url andParams:nil]; NSLog(@"OAuth header : %@\n\n", oauth_header); ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:url]]; [request addRequestHeader:@"User-Agent" value:@"ASIHTTPRequest"]; request.requestMethod = @"POST"; [request addRequestHeader:@"X-Auth-Service-Provider" value:@"https://api.twitter.com/1/account/verify_credentials.json"]; [request addRequestHeader:@"X-Verify-Credentials-Authorization" value:oauth_header]; NSData *imageRepresentation = UIImageJPEGRepresentation(imageToUpload, 0.8); [request setData:imageRepresentation forKey:@"media"]; [request setPostValue:@"Some Message" forKey:@"message"]; [request setPostValue:TWITPIC_API_KEY forKey:@"key"]; [request setDelegate:self]; [request setDidFinishSelector:@selector(requestDone:)]; [request setDidFailSelector:@selector(requestFailed:)]; [request start]; Here is the OAuth Header: OAuth realm="http://api.twitter.com/", oauth_timestamp="1275492425", oauth_nonce="b686f20a18ba6763ac52b689b2ac0c421a9e4013", oauth_signature_method="HMAC-SHA1", oauth_consumer_key="zNbW3Xi3MuS7i9cpz6fw", oauth_version="1.0", oauth_token="147275699-jmrjpwk3B6mO2FX2BCc9Ci9CRBbBKYW1bOni2MYs", oauth_signature="d17HImz6VgygZgbcp845CD2qNnI%3D"

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  • Winforms: Attempted to read or write protected memory. This is often an indication that other memory is corrupt

    - by mamcx
    I have a bunch of background events. All of them call a log: private void log(string text, params object[] values) { if (editLog.InvokeRequired) { editLog.BeginInvoke( (MethodInvoker)delegate { this.log(text, values); }); } else { text = string.Format(text, values) + Environment.NewLine; lock (editLog) { editLog.AppendText(text); editLog.SelectionStart = editLog.TextLength; editLog.ScrollToCaret(); } } } Sometimes I get this, but other times not: System.AccessViolationException was unhandled Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt. Source=System.Windows.Forms StackTrace: at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at System.Windows.Forms.NativeWindow.DefWndProc(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.RichTextBox.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.SendMessage(HandleRef hWnd, Int32 msg, Int32 wParam, Object& editOle) at System.Windows.Forms.TextBoxBase.ScrollToCaret() at Program1.frmMain.log(String text, Object[] values) in ... ... ... P.D: Not always stop at this line, randomly will be one of the three times editLog methods/properties are used. Not always a exception is throw. Sometimes look like the thing freeze. But not the main UI, just the flow of messages (ie: log look like is never called again) The app is a single form, with background process. I can't see what I doing wrong with this...

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  • Diff between <head id="Head1" runat="server"> and <asp:ContentPlaceHolder runat="server" ID="HeadCon

    - by justSteve
    Looking for an better understanding of how an mvc project should define javascript and css includes. I'm working with sample code where includes are defined like: <head id="Head1" runat="server"> <title><asp:ContentPlaceHolder ID="TitleContent" runat="server" />Affiliate Checkout</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <meta http-equiv="pragma" content="no-cache"> <script type="text/javascript" src="/Scripts/jquery.js"></script> <script type="text/javascript" src="/Scripts/jquery-ui-1.7.2.custom.min.js"></script> . . . <asp:ContentPlaceHolder runat="server" ID="HeadContent"></asp:ContentPlaceHolder> </head> I'm reading that to be that _all pages looking at this MasterPage will get jquery and jqueryUI and, additionally, each page will have the opportunity to add head elements thankx to the content placeholder HeadContent tag. The specific problem i'm troubleshooting is an instance where my rendered page is not including the 'prama no-cache' tag - as you see, it's defined in the upper level header section. Other .js and .css elements are making it into the rendered page so it very confusing to see that the no-cache tag isn't. When execute a 'View Generated Source' - the 'charset' is present the 'no-cache' is not.

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  • log4net affecting other projects which don't even use it

    - by Graeme
    I'm seeing something really strange happening with some projects I'm working on. I used log4net in an MVC web site and this was working great. I then was working on a totally unrelated Console application which uses the SharePoint API and as soon as I include the following line (other lines don't cause the problem) SPLimitedWebPartManager spWebPartManager = web.GetLimitedWebPartManager("http://blah/blah.aspx?PageView=Shared", System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared); I get the following message in the console app log4net:ERROR XmlConfigurator: Failed to find configuration section 'log4net' in the application's .config file. Check your .config file for the <log4net> and < configSections> elements. The configuration section should look like: <section n ame="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" / > log4net:ERROR XmlConfigurator: Failed to find configuration section 'log4net' in the application's .config file. Check your .config file for the <log4net> and < configSections> elements. The configuration section should look like: <section n ame="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" / > I get this twice after a small delay. The delay is probably the request to get the web part manager from the page but I'm not sure why this log4net error is showing up in this project. I've gone through the code and bin folders etc. and found no trace of any log4net mentions. Any ideas why this might be happening?

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  • ASP.NET MVC - using model property as form, how can I post to action?

    - by Ryan Peters
    Consider the following model: public class BandProfileModel { public BandModel Band { get; set; } public IEnumerable<Relationship> Requests { get; set; } } and the following form: <% using (Html.BeginForm()) { %> <%: Html.EditorFor(m => m.Band) %> <input type="submit" value="Save Band" /> <% } %> which posts to the following action: public ActionResult EditPost(BandProfileModel m, string band) { // stuff is done here, but m is null? return View(m); } Basically, I only have one property on my model that is used in the form. The other property in BandProfleModel is just used in the UI for other data. I'm trying to update just the Band property, but for each post, the argument "m" is always null (specifically, the .Band property is null). It's posting just fine to the action, so it isn't a problem with my route. Just the data is null. The ID and name attributes of the fields are BAND_whatever and Band.whatever (whatever being a property of Band), so it seems like it would work... What am I doing wrong? How can I use just one property as part of a form, post back, and have values populated via the model binder for my BandProfileModel property in the action? Thanks.

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  • JQuery - Slide Example

    - by gav
    Hi All, I want to perform a simple slide motion on an HTML element. JQuery is already available on the site in question so the next logical step for me was to look at their documentation. JQuery - Slide down When I check out their demo however, it doesn't seem to be functioning. In firebug they have an error; missing ) after argument list wyciwyg://0/http://docs.jquery.com/UI/Effects/Slide Line 18 Whilst the error seems simple, I can't work out how to correct it (On thier site by editing the JS). On my own site using the same example an error is found in the JQuery 1.4.2 script itself; jQuery.easing[specialEasing || defaultEasing] is not a function file:///home/gav/ee-workspaces/web/site/php/jquery-1.4.2.js Line 5854 I don't mean to sound lazy / rude but what's going on? Is the JQuery site and newest release actually broken, I doubt it, what am I doing wrong? I'm a CS grad with no real web dev experience so I'm not used to this method of debugging, where should I start with this? Thanks, Gav

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  • jQuery draggable + droppable: how to snap dropped element to dropped-on element

    - by 10goto10
    I have my screen divided into two DIVs. In the left DIV I have a few 50x50 pixel DIVs, in the right DIV I have an empty grid made of 80x80 LIs. The DIVs on the left are draggable, and once dropped on a LI, they should snap to center of that LI. Sounds simple, right? I just don't know how to get this done. I tried by manipulating the dropped DIV's top and left CSS properties to match those of the LI they're dropped into, but the left and top properties are relative to the left DIV. How can I best have the dropped element snap to the center of the element it's dropped into? That's gotta be simple, right? Edit: I'm using jQuery UI 1.7.2 with jQuery 1.3.2. Edit 2: For whoever else has this problem, this is how I fixed it: I used Keith's solution of removing the dragged element and placing it inside the dropped-on element in the drop callback of the droppable plugin: function gallerySnap(droppedOn, droppedElement) { $(droppedOn).html('<div class="drop_styles">'+$(droppedElement).html()+'</div>' ); $(droppedElement).remove(); } I don't the dropped element to be draggable again, but if you do, just bind draggable to it again. For me this method also solved the problem I had when positioning the dropped elements (which would be relative to the left DIV) and scrolling inside the second DIV. (Elements would remain fixed on page, now they scroll along). I did play with the snap options to make it look good while dragging, so thanks to karim79 for that suggestion. I probably won't win any Awesome Code prizes with this, so if you see room for improvement, please share!

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  • Entity Framework & Binding syncronisation

    - by Jefim
    * EDIT * Sorry, I should make it clearer. Imagine I have an entity: public class MyObject { public string Name { get; set; } } And I have a ListBox: <ListBox x:Name="lbParts"> <ListBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding Name}"/> </DataTemplate> </ListBox.ItemTemplate> </ListBox> I bind it to a collection in code-behind: ObjectQuery<MyObject> componentQuery = context.MyObjectSet; Binding b = new Binding(); b.Source = componentQuery; lbParts.SetBinding(ListBox.ItemsSourceProperty, b); And the on a button click I add an entity to the MyObjectSet: var myObject = new MyObject { Name = "Test" }; context.AddToMyObjectSet(myObject); Here is the problem - this object needs to update in the UI to. But it is not added there :( Help!

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  • OrientationEventListener not working properly

    - by nixau
    Hi all, I need to handle orientation changes in my Android application. For this purpose I decided to use OrientationEventListener convenience class. But his callback method is given somewhat strange behavior. My application starts in the portrait mode and then eventually switches to the lanscape one. I have some custom code executing in the callback onOrientationChanged method that provides some additional UI handling logic - it has a few calls to findViewById. What is strange is that when switching back from landscape to portrait mode onOrientationChanged callback is called twice, and what's even worse - the second call is dealing with bad Context - findViewById method starts returning null. These calls are made right from the MainThread @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); listener = new OrientationListener(); } @Override protected void onResume() { super.onResume(); // enabling listening listener.enable(); } @Override protected void onPause() { super.onPause(); // disabling listening listener.disable(); } I've replicated the same behavior with a dummy Activity without any logic except for one that deals with orientation hadling. I initiate orientation switch from the Android 2.2 emulator by pressing Ctrl+F11 What could be wrong? Upd: Inner class that implements OrientationEventListener private class OrientationListener extends OrientationEventListener { public OrientationL() { super(getBaseContext()); } @Override public void onOrientationChanged(int orientation) { toString(); } } }

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  • How do I stop inheritance in xaml?

    - by cfouche
    Hi Let's say I have some Control that has been disabled. It contains a bunch of elements, but I want one of those child elements to remain enabled. Something like this: <ContentControl IsEnabled="False"> <Border> <Button Content="Button" IsEnabled="True"/> </Border> </ContentControl> So in this example, the Button's IsEnabled="True" setting gets overridden by its parent. Is there a way of stopping this from happening? This seems like a strange thing to be doing, but I have a situation where, when a Control is disabled and a user mouses down on it, I still want an event to be triggered. I read in WPF Unleashed that wrapping something in a Frame control, "..isolates the content from the rest of the UI [and] properties that would normally be inherited down the element tree stop when they reach the Frame", but wrapping the Button in the example above in a Frame doesn't work. Am I on the wrong track here?

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  • VB.Net Custom Controls

    - by Paul
    This might be basic question, however I am confused on some .Net Concpets. I am trying to create a "Data Browser" in VB.net. Similar to a Web Browser however each Tab in the Data Browser is a view of some Data (from a database or flat files) not a webpage. The UI on each Tab is mostly the same. A list Box (showing datatypes, etc), a TextBox (where you can create a filter), and a DataGridView, a DataSource Picker, etc. The only thing that would change on each tab is that there could be a custom "Viewer". In most cases (depending on the datasource), this would be the datagrid, however in other cases it would be a treecontrol. From reading through the .Net documents, it appears that I need to Create a Custom Control (MyDataBrowser) Consisting of a Panel with all the common Controls (except the viewer). Every time the user says "New Tab", a new tabpage is created and this MyDataBrowser Control is added, The MyDataBrowser control would contain some function that was able to then create the approriate viewer based on the data at hand. If this is the suggested route, how is the best way to go about creating the MyDataBrowser Control (A) Is this a Custom Control Library? (B) Is this an Inhertited Form? (C) Is this an Inherrited User Control? I assume that I have to create a .DLL and add as a reference. Any direction on this would be appreciated. Does the custom Control have its own properties (I would like to save/load these from a configuration file). Is it possible to add a backgroundworker to this customcontrol? Thanks.

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  • MSI wrapper for msdeploy?

    - by Nate
    Just moved to vs2010 and found that deployment is quite different. The old way I did things (vs2008) was as follows: 1) I right-click on my web app and "Add web deployment project" 2) Start a web setup project, dump that web deployment project output in it, and add any custom installer actions (connection strings or other user input) as necessary using the custom installer class. Easy! Now that I don't have the "Add web deployment project" option (or can't find it!?!?), msdeploy seems to be the thing to do. I have successfully got this to work via command line, but I still need some custom actions. In this example, we have separated our web services deployment from our UI deployment (Silverlight) so that they can be hosted separately or together. So... during/after install I need to know from the user where the web services are located. So I tried this: 1) Start a web setup project, and include all of the deploy package files (.deploy.cmd, /setparameters.xml, etc) 2) Gather user input in my custom installer class, and shell execute the deploy.cmd. Problem is... the deploy fails on deleting the zip file since it's use by another process (I assume it's my installer). Anyone have any ideas on how to get around this? Or is there a better way to accomplish this task? Any input would be appreciated! Nate

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  • XAML to HTML Conversion - WPF RichTextBox

    - by Erika
    I have the problem where i have a WPF RichTextBox, and i'm extracting its XAML code and saving it to a txt file. When i copy paste the XAML code generated to a XAMLtoHTML converter like this http://blogs.msdn.com/wpfsdk/archive/2006/05/25/606317.aspx , some error must be occuring as i'm always getting a blank result! If i write test in the RichTextBox i get the following XAML: <Section xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xml:space="preserve" TextAlignment="Left" LineHeight="Auto" IsHyphenationEnabled="False" xml:lang="en-us" FlowDirection="LeftToRight" NumberSubstitution.CultureSource="Text" NumberSubstitution.Substitution="AsCulture" FontFamily="Segoe UI" FontStyle="Normal" FontWeight="Normal" FontStretch="Normal" FontSize="12" Foreground="#FF000000" Typography.StandardLigatures="True" Typography.ContextualLigatures="True" Typography.DiscretionaryLigatures="False" Typography.HistoricalLigatures="False" Typography.AnnotationAlternates="0" Typography.ContextualAlternates="True" Typography.HistoricalForms="False" Typography.Kerning="True" Typography.CapitalSpacing="False" Typography.CaseSensitiveForms="False" Typography.StylisticSet1="False" Typography.StylisticSet2="False" Typography.StylisticSet3="False" Typography.StylisticSet4="False" Typography.StylisticSet5="False" Typography.StylisticSet6="False" Typography.StylisticSet7="False" Typography.StylisticSet8="False" Typography.StylisticSet9="False" Typography.StylisticSet10="False" Typography.StylisticSet11="False" Typography.StylisticSet12="False" Typography.StylisticSet13="False" Typography.StylisticSet14="False" Typography.StylisticSet15="False" Typography.StylisticSet16="False" Typography.StylisticSet17="False" Typography.StylisticSet18="False" Typography.StylisticSet19="False" Typography.StylisticSet20="False" Typography.Fraction="Normal" Typography.SlashedZero="False" Typography.MathematicalGreek="False" Typography.EastAsianExpertForms="False" Typography.Variants="Normal" Typography.Capitals="Normal" Typography.NumeralStyle="Normal" Typography.NumeralAlignment="Normal" Typography.EastAsianWidths="Normal" Typography.EastAsianLanguage="Normal" Typography.StandardSwashes="0" Typography.ContextualSwashes="0" Typography.StylisticAlternates="0"><Paragraph><Run>test</Run></Paragraph></Section> pleaseee help!! Any Ideas?

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  • Threading best practice when using SFTP in C#

    - by Christian
    Ok, this is more one of these "conceptual questions", but I hope I got some pointers in the right direction. First the desired scenario: I want to query an SFTP server for directory and file lists I want to upload or download files simulaneously Both things are pretty easy using a SFTP class provided by Tamir.SharpSsh, but if I only use one thread, it is kind of slow. Especially the recursion into subdirs gets very "UI blocking", because we are talking about 10.000 of directories. My basic approach is simple, create some kind of "pool" where I keep 10 open SFTP connections. Then query the first worker for a list of dirs. If this list was obtained, send the next free workers (e.g. 1-10, first one is also free again) to get the subdirectory details. As soon as there is a worker free, send him for the subsubdirs. And so on... I know the ThreadPool, simple Threads and did some Tests. What confuses me a little bit is the following: I basically need... A list of threads I create, say 10 Connect all threads to the server If a connection drops, create a new thread / sftp client If there is work to do, take the first free thread and handle the work I am currently not sure about the implementation details, especially the "work to do" and the "maintain list of threads" parts. Is it a good idea to: Enclose the work in an object, containing a job description (path) and a callback Send the threads into an infinite loop with 100ms wait to wait for work If SFTP is dead, either revive it, or kill the whole thread and create a new one How to encapsulate this, do I write my own "10ThreadsManager" or are there some out Ok, so far... Btw, I could also use PRISM events and commands, but I think the problem is unrelated. Perhaps the EventModel to signal a done processing of a "work package"... Thanks for any ideas, critic.. Chris

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  • Do I really need an ORM?

    - by alchemical
    We're about to begin development on a mid-size ASP.Net MVC 2 web site. For a typical page, we grab data and throw it up on the web page, i.e. there is not much pre-processing of the data before it is sent to the UI. We're now making the decision whether or not to use an ORM and if yes, which one. We had been looking at EF2 AKA EF4 (ASP.Net Entity Framework in VS 2010) as one possibility. However, I'm thinking a simple solution in this case may be just to use datatables. The reason being that we don't plan to move the data around or process it a lot once we fetch it, so I'm not sure there is that much value in having strongly-typed objects as DTOs. Also, this way we avoid mapping altogether, thereby I think simplifying the code and allowing for faster development. I should mention budget is an issue on this project, as well as speed of execution. We are striving for simplicity anywhere we can, both to keep the budget smaller, the schedule shorter, and performance fast. We haven't fully decided this yet, but are currently leaning towards no ORM. Will we be OK with the no ORM approach or is an ORM worth it?

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  • HtmlForm.Action and .Net Framework 2.0/3.5 Query

    - by Brian
    Disappointingly, the members page for HtmlForm 2.0 is missing... My research seems to indicate that HtmlForm.Action is a property that was added in .Net Framework 3.5. However, I'm using VS2005 and my reference to System.Web (the namespace HtmlForm is under) is to a .Net Framework 2.0 runtime version. Further, my IIS status information also indicates I am using .Net Framework 2.0, when I force an error on my local IIS and read it. Despite this, I am able to use form1.Action successfully...but only on my local IIS. When I try it on vms and external servers, I get [MissingMethodException: Method not found: 'System.String System.Web.UI.HtmlControls.HtmlForm.get_Action()'.] errors. So, my question: 1) Why does it work on my local IIS? Does the fact that I have the 3.5 framework installed make a difference, here? 2) Why does it not work on other IIS? (I think this is because it's not part of .Net 2.0). I guess I just figure that if something is running on .Net Framework 2.0, the presence of 3.5 should not make a difference. Or maybe there's some other cause for these results.

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  • Getting web page after calling DownloadStringAsync()?

    - by OverTheRainbow
    Hello I don't know enough about VB.Net yet to use the richer HttpWebRequest class, so I figured I'd use the simpler WebClient class to download web pages asynchronously (to avoid freezing the UI). However, how can the asynchronous event handler actually return the web page to the calling routine? Imports System.Net Public Class Form1 Private Shared Sub DownloadStringCallback2(ByVal sender As Object, ByVal e As DownloadStringCompletedEventArgs) If e.Cancelled = False AndAlso e.Error Is Nothing Then Dim textString As String = CStr(e.Result) 'HERE : How to return textString to the calling routine? End If End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim client As WebClient = New WebClient() AddHandler client.DownloadStringCompleted, AddressOf DownloadStringCallback2 Dim uri As Uri = New Uri("http://www.google.com") client.DownloadStringAsync(uri) 'HERE : how to get web page back from callback function? End Sub End Class Thank you. Edit: I added a global, shared variable and a While/DoEvents/EndWhile, but there's got to be a cleaner way to do this :-/ Public Class Form1 Shared page As String Public Shared Sub AlertStringDownloaded(ByVal sender As Object, ByVal e As DownloadStringCompletedEventArgs) ' If the string request went as planned and wasn't cancelled: If e.Cancelled = False AndAlso e.Error Is Nothing Then page = CStr(e.Result) End If End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim wc As New WebClient AddHandler wc.DownloadStringCompleted, AddressOf AlertStringDownloaded page = Nothing wc.DownloadStringAsync(New Uri("http://www.google.com")) 'Better way to wait until page has been filled? While page Is Nothing Application.DoEvents() End While RichTextBox1.Text = page End Sub End Class

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  • WPF Background Thread Invocation

    - by jeffn825
    Maybe I'm mis-remembering how Winforms works or I'm overcomplicating the hell out of this, but here's my problem. I have a WPF client app application that talks to a server over WCF. The current user may "log out" of the WPF client, which closes all open screens, leaves only the navigation pane, and minimizes the program window. When the user re-maximizes the program window, they are prompted to log in. Simple. But sometimes things happen on background threads - like every 5 minutes the client tries to make a WCF calls that refreshes some cached data. And what if the user is logged out when this 5 minute timer triggers? Well, then the user should be prompted to log back in...and this must of course happen on the UI thread. private static ISecurityContext securityContext; public static ISecurityContext SecurityContext { get { if (securityContext == null) { // Login method shows a window and prompts the user to log in Application.Current.Dispatcher.Invoke((Action)Login); } return securityContext; } } So far so good, right? But what happens when multiple threads hit this spot of code? Well, my first intuition was that since I'm syncrhonizing across the Application.Current.Dispatcher, I should be fine, and whichever thread hit first would be responsible for showing the login form and getting the user logged in... Not the case... Thread 1 will hit the code and call ShowDialog on the login form Thread 2 will also hit the code and will call Login as soon as Thread 1 has called ShowDialog, since calling ShowDialog unblocked Thread 1 (I believe because of the way the WPF message pump works) All I want is a synchronized way of getting the user logged back into the application...what am I missing here? Thanks in advance.

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  • Getting Android SDK WebView and TabWidget to play nice

    - by jdandrea
    I’m taking the HelloTabWidget Android example and trying two things: Moving the tabs to the bottom vs. the top (if that’s even desirable from an Android UI POV) Making each tab show a particular WebView in the space above I’ve got this for a layout (high level): <TabHost> <LinearLayout> <FrameLayout> <WebView/> <WebView/> <WebView/> <WebView/> <WebView/> </FrameLayout> <TabWidget/> </LinearLayout> </TabHost> Everything has a width/height set to fill_parent except for the TabWidget which has its layout_height set to wrap_content (and the layout_gravity set to bottom). First thing I noticed is that WebViews don’t show anything until all the parents have width/height set to fill_parent. However, once I do that, they fill the entire display, obscuring the TabWidget. Is there some other trick to making these two views play nicely together?

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  • C# File IO with Streams - Best Memory Buffer Size

    - by AJ
    Hi, I am writing a small IO library to assist with a larger (hobby) project. A part of this library performs various functions on a file, which is read / written via the FileStream object. On each StreamReader.Read(...) pass, I fire off an event which will be used in the main app to display progress information. The processing that goes on in the loop is vaired, but is not too time consuming (it could just be a simple file copy, for example, or may involve encryption...). My main question is: What is the best memory buffer size to use? Thinking about physical disk layouts, I could pick 2k, which would cover a CD sector size and is a nice multiple of a 512 byte hard disk sector. Higher up the abstraction tree, you could go for a larger buffer which could read an entire FAT cluster at a time. I realise with today's PC's, I could go for a more memory hungry option (a couple of MiB, for example), but then I increase the time between UI updates and the user perceives a less responsive app. As an aside, I'm eventually hoping to provide a similar interface to files hosted on FTP / HTTP servers (over a local network / fastish DSL). What would be the best memory buffer size for those (again, a "best-case" tradeoff between perceived responsiveness vs. performance). Thanks in advance for any ideas, Adam

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  • Multithreaded search with UISearchDisplayController

    - by Kulpreet
    I'm sort of new to any sort of multithreading and simply can't seem to get a simple search method working on a background thread properly. Everything seems to be in order with an NSAutoreleasePool and the UI being updated on the main thread. The app doesn't crash and does perform a search in the background but the search results yield the several of the same items several times depending on how fast I type it in. The search works properly without the multithreading (which is commented out), but is very slow because of the large amounts of data I am working with. Here's the code: - (void)filterContentForSearchText:(NSString*)searchText { NSAutoreleasePool *apool = [[NSAutoreleasePool alloc] init]; isSearching = YES; //[self.filteredListContent removeAllObjects]; // First clear the filtered array. for (Entry *entry in appDelegate.entries) { NSComparisonResult result = [entry.item compare:searchText options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchText length])]; if (result == NSOrderedSame) { [self.filteredListContent addObject:entry]; } } isSearching=NO; [self.searchDisplayController.searchResultsTableView performSelectorOnMainThread:(@selector(reloadData)) withObject:nil waitUntilDone:NO]; //[self.searchDisplayController.searchResultsTableView reloadData]; [apool drain]; } - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString { [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(filteredListContent:) object:searchString]; [self.filteredListContent removeAllObjects]; // First clear the filtered array. [self performSelectorInBackground:(@selector(filterContentForSearchText:)) withObject:searchString]; //[self filterContentForSearchText:searchString]; // Return YES to cause the search result table view to be reloaded. return NO; }

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