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• RenderControl error

  - by Rubans

  HI, I have a grid with which I'm templating columns with and one column is a user control. Since I'm adding these in the code behind ( using ITemplate), I get an error when I try to render the UserControl. This particular user control does require a scriptmanager since it includes a ajax control (radcombobox). The error I get is : Script control 'LookupComboBox' is not a registered script control. Script controls must be registered using RegisterScriptControl() before calling RegisterScriptDescriptors(). I'm not sure even if my approach is correct using user control and using RenderControl.

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• ASPX has image from portal.mxlogic.com

  - by codie

  I have a aspx page I'm trying to (remotely) debug. It should add an image and set the src. The value seems correct if i msgbox the value that should be used for the "ImageUrl" But viewing the page there is no image and the src is: http://portal.mxlogic.com/images/transparent.gif This is a mcaffee page so is this some security thing...that is just a wild\crazy guess. Maybe i'm missing something very obvious...I did not write the code and I'm not really a aspx developer. Any ideas?? llf as requested some code... TableCell tc = new TableCell(); {code to create imgurl ... very specific to this situation} MessageBox(imgurl); //The imgurl value here is correct if (imgurl != null) { image.ImageUrl = imgurl; } else { MessageBox("image url is null"); } tc.Controls.Add(image); tr.Cells.Add(tc); Table1.Rows.Add(tr)

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• How to control docking order in C# WinForms

  - by Tommy

  As the title states, I'm looking for a way to control the order in which the items dock to the top of my control. I've played with the windows form designer, and i cant seem to find what the RightClick->Order->SendToFront is doing, because thats exactly what I want to happen. As far as I can get to happen, as I add my contents to my control, the newest contents is always at the top, and I'd like for the Newer contents to be on the bottom, and the oldest contents to be at the top. Summery: Is there an easy way in WinForms (C#), to control the order in which things dock to the sides of controls?

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• Clear fields on CreateUserWizard, Login control

  - by Midhat

  I have a createuserwizard and a login control on a page. both of them are customized (standard textboxes are replaced by RadTextBoxes) When i enter a value in the form and refresh the browser without submitting, the forms retain their values. Is there any way i can clear these fields on refresh. I have tried settinf EnableViewState false on the controls (as seen somewhere on the web) but it doesnt work I have added code in page load to clear the fields if the page !IsPostBack. it looks something like this if (!IsPostBack) { ((RadTextBox)Login1.FindControl("Username")).Text=""; ((RadTextBox)Login1.FindControl("Password")).Text = ""; ((RadTextBox)CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("Username")).Text = ""; ((RadTextBox)CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("Password")).Text = ""; ((RadTextBox)CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("confirmPassword")).Text = ""; ((RadTextBox)CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("Email")).Text = ""; } Still of no avail Any suggestions

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• Is it possible to Embed Gecko or Webkit in a Windows Form just like a WebView?

  - by Martín Marconcini

  Hi, I'd love to know if there is such thing as a Gecko.NET ;) I mean, just like we can embed a WebView and that is an "instance" of IE7 inside any Windows Forms application (and tell it to "navigateto (fancy_url);", I'd love to use FireFox or WebKit. Anybody tried this? UPDATE: Please bear in mind that although it is possible to embed gecko using the mentioned controls, it is still impossible to print while using gecko. UPDATE March 2010: It’s still not possible to print natively using GeckoFX, however a couple of methods exist that may be enough, depending upon what you’re trying to do. See: http://geckofx.org/viewtopic.php?id=796 for more information.

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• Assembly reference in Silverlight class library and used only in xaml is not packaged in XAP

  - by Brandon Copeland

  I have a 3rd party library (A). That library is referenced in my Silverlight class library (B). That Silverlight class library is referenced in my Silverlight application (C). The 3rd party library is not explicitly referenced in the Silverlight application. It seems that "A" is added to my XAP if "A" is used in any class in "B" because of a chain in dependencies (C - B - A). This is the behavior I would expect and need. If "A" is never explicitly used in a C# class but only defined in Xaml, the assembly is not packaged to the XAP. Maybe "A" includes a control that is only used declaratively and never referenced otherwise. Is this behavior by design? Am I missing a property somewhere that controls this? I would prefer to not explicitly reference the third party library in my Silverlight application. What's to best practice to ensure all necessary assemblies are packaged in the XAP?

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• How to set focus for CustCombBox in a CellEditingTemplate when entering page at the first time(MVVM

  - by Shamin

  PreparingCellForEdit="dg_PreparingCellForEdit" BeginningEdit="dg_BeginningEdit" <data:DataGridTemplateColumn MinWidth="300"> <data:DataGridTemplateColumn.HeaderStyle> <Style TargetType="primitives:DataGridColumnHeader" BasedOn="{StaticResource FOTDataGridColumnHeaderStyle}"> <Setter Property="ContentTemplate"> <Setter.Value> <DataTemplate> <TextBlock Text="{Binding CancelReasonText2,Source={StaticResource LabelResource}}" Style="{StaticResource TextBlockLabelStandardStyle}"/> </DataTemplate> </Setter.Value> </Setter> </Style> </data:DataGridTemplateColumn.HeaderStyle> <data:DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding CancelReason.CancelCodeDescription}" Style="{StaticResource TextBlockLabelStandardStyle}"/> </DataTemplate> </data:DataGridTemplateColumn.CellTemplate> <data:DataGridTemplateColumn.CellEditingTemplate> <DataTemplate> <input:AutoCompleteBox x:Name="cBoxCancelReason" FilterMode="StartsWith" IsDropDownOpen="True" SelectedItem="{Binding CancelReason, Mode=TwoWay}" ItemsSource="{Binding CancelCodes}" ValueMemberPath="CancelCodeDescription" > <input:AutoCompleteBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding CancelCodeDescription}" Style="{StaticResource TextBlockLabelStandardStyle}"/> </DataTemplate> </input:AutoCompleteBox.ItemTemplate> </input:AutoCompleteBox> </DataTemplate> </data:DataGridTemplateColumn.CellEditingTemplate> </data:DataGridTemplateColumn> </data:DataGrid.Columns> </data:DataGrid> ---CodeBind public partial class CancelFlightView : UserControl,ICancelFlightView { private data.CancelCode DefaultCancelCode { get { data.CancelCode code = new data.CancelCode(); code.CancelCd = "-1"; code.CancelCodeDescription = "-- Select Cancel Reason --"; return code; } } public CancelFlightView() { InitializeComponent(); this.dg.LoadingRow += new EventHandler<DataGridRowEventArgs>(dg_LoadingRow); //this.Loaded += new RoutedEventHandler(CancelFlightView_Loaded); } void dg_LoadingRow(object sender, DataGridRowEventArgs e) { CheckBox checkBox = (CheckBox)dg.Columns[0].GetCellContent(e.Row); if (checkBox.IsChecked.Value) { FrameworkElement obj = (FrameworkElement)dg.Columns[1].GetCellContent(e.Row); System.Windows.Browser.HtmlPage.Plugin.Focus(); DataGridCell cellEdit = (DataGridCell)obj.Parent; cellEdit.Focus(); dg.BeginEdit(); } } //private void UserControl_Loaded(object sender, RoutedEventArgs e) //{ // if (DataContext != null) // { // CancelFlightViewModel viewModel = (CancelFlightViewModel)DataContext; // viewModel.View = this; // viewModel.Grid = dg; // //viewModel.InitFocus(); // } //} //void CancelFlightView_Loaded(object sender, RoutedEventArgs e) //{ // if (dg.SelectedItem != null) // { // CheckBox checkBox = (CheckBox)dg.Columns[0].GetCellContent(dg.SelectedItem); // if (checkBox.IsChecked.Value) // { // DataGridCell cellEdit = ((DataGridCell)((System.Windows.Controls.Primitives.DataGridCellsPresenter)((DataGridCell)checkBox.Parent).Parent).Children[1]); // dg.CurrentColumn = dg.Columns[1]; // System.Windows.Browser.HtmlPage.Plugin.Focus(); // cellEdit.Focus(); // dg.BeginEdit(); // } // } //} public CancelFlightView(CancelFlightViewModel viewModel):this() { ViewModel = viewModel; } private void dg_PreparingCellForEdit(object sender, DataGridPreparingCellForEditEventArgs e) { object obj = dg.Columns[1].GetCellContent(e.Row); if (obj != null && obj.GetType() == typeof(AutoCompleteBox)) { AutoCompleteBox cBoxCancelReason = (AutoCompleteBox)obj; System.Windows.Browser.HtmlPage.Plugin.Focus(); cBoxCancelReason.Focus(); } } private void CustomComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e) { } private void dg_BeginningEdit(object sender, DataGridBeginningEditEventArgs e) { } private void chkFlight_Click(object sender, RoutedEventArgs e) { CheckBox chkTemp = sender as CheckBox; if (!chkTemp.IsChecked.Value) { } else { DataGridCell cellEdit = ((DataGridCell)((System.Windows.Controls.Primitives.DataGridCellsPresenter)((DataGridCell)chkTemp.Parent).Parent).Children[1]); dg.CurrentColumn = dg.Columns[1]; cellEdit.Focus(); dg.BeginEdit(); } } private void LayoutRoot_KeyUp(object sender, KeyEventArgs e) { //if (e.Key == Key.Enter) //{ //} } #region ICancelFlightView Members public CancelFlightViewModel ViewModel { get { return DataContext as CancelFlightViewModel; } set { DataContext = value; } } #endregion } Now, when user click CheckBox, I can set focus on CustCombBox, but I can't set focus on Whose checkBox.IsChecked.Value = true when page is opened for the first time. is it possible on MVVM pattern? Looking forward your reply, thanks very much.

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• How to get default Ctrl+Tab functionality in WinForms MDI app when hosting WPF UserControls

  - by jpierson

  I have a WinForms based app with traditional MDI implementation within it except that I'm hosting WPF based UserControls via the ElementHost control as the main content for each of my MDI children. This is the solution recommended by Microsoft for achieving MDI with WPF although there are various side effects unfortunately. One of which is that my Ctrl+Tab functionality for tab switching between each MDI child is gone because the tab key seems to be swallowed up by the WPF controls. Is there a simple solution to this that will let the Ctrl+tab key sequences reach my WinForms MDI parent so that I can get the built-in tab switching functionality?

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• cancel update in datacontext = LInq

  - by Garcia Julien

  Hi, I would like to know if its possible to discard changes of only one record of only one table in datacontext. I use databind to bind my controls on a form. I modify one record at a time. after the modification, the user have to hit save button to validate. But he can hit cancel. I would like that the cancel button discard all the changes that the user has done. Is it possible? Ju

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• How can I prevent Telerik RadChart from generating an onerror attribute?

  - by Sean McMillan

  We're using the Telerik Rad Controls for ASP.Net Ajax on an ASP.Net MVC project. The RadChart generates the following HTML: <img onerror="if(confirm('Error loading RadChart image.\nYou may also wish to check the ASP.NET Trace for further details.\nDisplay stack trace?'))window.location.href=this.src;" src="ChartImage.axd?UseSession=true&amp;ChartID=e25ad666-e05b-4a92-ac0c-4f2c729b9382_chart_ctl00$MainContent$AverageCTMChart&amp;imageFormat=Png&amp;random=0.501658702968461" usemap="#imctl00_MainContent_AverageCTMChart" style="border-width: 0px;" alt=""> I'd like to remove the onerror attribute; I don't really want the customers being offered the option to see a stack trace if something goes wrong. I can't see any way to control the markup that this control generates. Google searches provide no help. Has anyone dealt with this before? How do I remove the onerror attribute?

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• ASP.Net double-click problem

  - by David Archer

  Hi there, having a slight problem with an ASP.net page of mine. If a user were to double click on a "submit" button it will write to the database twice (i.e. carry out the 'onclick' method on the imagebutton twice) How can I make it so that if a user clicks on the imagebutton, just the imagebutton is disabled? I've tried: <asp:ImageButton runat="server" ID="VerifyStepContinue" ImageUrl=image src ToolTip="Go" TabIndex="98" CausesValidation="true" OnClick="methodName" OnClientClick="this.disabled = true;" /> But this OnClientClick property completely stops the page from being submitted! Any help? Sorry, yes, I do have Validation controls... hence the icky problem.

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• Scrollable div on iPhone without using 2 fingers?

  - by Brad Parks

  Hi there; I've got a UIWebView embedded in my iPhone app, and I'd like to keep a locked header and footer DIV on the page at all times, with a scrollable center DIV. I know that I could do this using a header/footer that are UIView controls, but I want the header and footer to be HTML divs, as a pure HTML/JS/CSS solution will be easier to port to Android/PalmPre/AdobeAir, which is going to be on my todo list relatively soon. I can do this using techniques like the one mentioned here: http://defunc.com/blog/?p=94 But this requires that the user use 2 fingers to scroll the div, which is not satisfactory to me... Any suggestions on how to do this? Thanks, Brad

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• Streaming Flash Video Problem - Clipping

  - by Stanley

  I have a simple flash video player that streams the video from a streaming media server. The stream plays fine and I have no problems with playing the video and doing simple functions. However, my problem is that on a mouse over of the video, I have the controls come up and when I do a seek or scrub on the video, I get little weird boxes that show over the video - like little pockets - of the video playing super fast (you can basically see it seeking) until it gets to the point it needs to be at and then these little boxes disappear. Is anybody else having these problems and if so, how do I fix this? I thought it might be some kind of masking problem, but I haven't been able to figure it out. Please Help!!!

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• How to make a table in Silverlight ?

  - by Shnitzel

  So I'd like to make a visible table, with a border around each cell and a different background color for the header. I'd like to eventually insert controls into this. For example, put a textfield inside one of the table elements, or some radio buttons, etc. Is there a control for this? I've narrowed it down to two possibilities, but they both seem kind of "meh": use the Grid Control - I like this but is there a way to color the border on the cell (I did not find this) use the DataGrid Control - this control is just way too complicated for what I need. I'm just looking for an html style table in silverlight, any ideas?

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• Jquery runtime error: object expected

  - by Joris

  The Jquery script that controls my tabcontainer gives an "object expected" runtime error. I honestly can't find the reason why: $(document).ready(function() { //When page loads... $(".tab_content").hide(); //Hide all content $("ul.tabs li:first").addClass("active").show(); //Activate first tab $(".tab_content:first").show(); //Show first tab content //On Click Event $("ul.tabs li").click(function() { $("ul.tabs li").removeClass("active"); //Remove any "active" class $(this).addClass("active"); //Add "active" class to selected tab $(".tab_content").hide(); //Hide all tab content var activeTab = $(this).find("a").attr("href"); //Find the href attribute value to identify the active tab + content $(activeTab).fadeIn(); //Fade in the active ID content return false; }); }); Has it something to do with the stylesheet?

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• Winforms, creating padding when using Dock properties.

  - by Zka

  How do I add padding, or some space between the textboxes when using dockstyle.top property? for(int i =0; i< 10; i++) { textboxes[i] = new TextBox(); textboxes[i].Dock = DockStyle.Top; mypanel.Controls.Add(textboxes[i]); } The code above puts textboxes right beneath each other. Can't figure this out without using mass panels or fixed positioning. How to do the following? 1) I would like to add around 10-20pixels between boxes. 2) How to change size (height,width) of the textboxes, since when using dockstyle.top it ignores the size commands ?

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• ASP.Net MVC ReturnUrl Practice

  - by Terry

  I have a question about the returnUrl querystring parameter that is appended by ASP.Net when attempted to hit a page that requires authentication. In looking at Microsoft NerdDinner Sample's LogOn action (along with every other 'sample authentication code' I see on the 'net), it just has the ReturnUrl parameter declared in the action's signature and uses it directly in a Redirect() call. However, back in the WebForms days and using Membership Controls, we use to use the FormsAuthentication.GetReturnUrl() call. Besides returning the 'default url' if no url was specified in the querystring, it also does a few security checks (Cross App Redirect and 'IsDangerousUrl()'). Are those no longer a concern or are all the sample 'log on' actions I'm seeing all over the 'net just ignoring those issues?

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• Dispatcher.Invoke not working in .NET 3.0 SP1

  - by Kapil

  I am developing a WPF windows application and am getting into a trouble running the app in .NET 3.0. Everytime that I try to access the System.Windows.Threading.Dispatcher.Invoke() method, I get a method-not-found error. Basically, I spawn a new thread from the main thread and try to change some UI properties (basically update a progress-bar) from the new thread using the following code: updateStatusDelegate usd = new updateStatusDelegate(progressBar.SetValue); Dispatcher.Invoke(usd, System.Windows.Threading.DispatcherPriority.Background, new object[] { System.Windows.Controls.ProgressBar.ValueProperty, Convert.ToDouble(perc) }); Can someone help me understand why do I encounter this error in .NET 3.0 version? I am able to get this going in .NET 3.0 SP2. But I guess .NET is not distributed independantly and is packaged only with .NET 3.5 version. My goal is to get away with the dependancy of .net 3.5 and have a dependancy on .NET 3.0 version Any help would be appreciated. Thanks Kapil

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• XML documentation to context sensitive help

  - by Yonas

  These days a number of commercial and open source tools have been developed for this purpose. However(unfortunately), non of them meet my requirement for specific problem I am dealing with. Currently, I am working on a project that exposes a different classes and functions to user as scripting interface. the user can use the objects from custom scripting interface and call methods to solve some specific problem. The problem I am facing is users of my classes need some sort of documentation in order to write their script efficiently. To address this problem am planing to use the compiler generated XML file to provide context sensitive help, which allows users to mouse over on any of the controls and corresponding methods from the GUI and read the reference documentation of the class/method. Now ... here are my questions: Can I get the sample source code? Can any one give me someone point me to some sort of best approach to address the problem?

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• UiElement based on another class

  - by plotnick

  I placed a control into a grid. let's say the control is derived from public class 'ButBase' which is derived in its turn from System.Windows.Controls.Button. The code normally compiles and app works just fine. But there's something really annoying. When you try to switch to xaml-design tab it will say 'The document root element is not supported by the visual designer', which is normal and I'm totally okay with that, but the thing is, that all the xaml code is underlined and VS2010 says: 'Cannot create an instance of ButBase' although still normally compiles and able to run. I've tried the same code in VS2008, it said that needs to see a public parameterless constructor in the ButBase, and even after I put one it showed the same error. What do I miss here?

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• Why don't web fonts in Firefox work on a different domain?

  - by mikez302

  I was experimenting with the fancy new OpenType font capability in Firefox 3.5 and I ran into a problem. I was trying to embed a font on a different domain than the page it would be used on, and it didn't work. I thought it may have been a bug, but from what I read on the MDC reference page, I noticed this note: In Gecko, web fonts are subject to the same domain restriction (font files must be on the same domain as the page using them), unless HTTP access controls are used to relax this restriction. It looks like they designed the browser that way on purpose. Out of curiosity, why would they do that? Is there any security risk with embedding a font? Or is it for legal trademark or copyright issues? Or something else?

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• Winforms: Enabling Localization by default (enforcing a project/solution policy)

  - by Obalix

  Is there an easy way to set the Localizable property to true for newly created usercontrols / forms? The scope of the setting should ideally be a solution or a project. In other words I want to say that this project/solution should be localizable, and then if I add a new form or control VS should automatically set the property to true. Edit: Although custom templates are possible, in a larger team they might not be always used. So it's more about enforcing a policy, ensuring that the team members do not ommit to set the property for the projects/solutions where it is a requirement that all forms/controls containing text resources should be localizable. Note: Team Foundation Server is not an Option.

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• Apply skin to a control created programatically

  - by Luis

  Say I am creating a Textbox in the codebehind of a page like this: protected override void OnInit(EventArgs e) { base.OnInit(e); TextBox test = new TextBox(); test.SkinkId = "MySkin"; placeHolder.Controls.Add(test); } and in my skin file I have this: <asp:TextBox runat="server" SkinId = "MySkin" Width="400" /> Why is the skin not beeing applied to the control. If i declare the control in my aspx page it works ok, but if I try to do it programatically it does not work... Any solution? Thanks Luis

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• Locating binding errors

  - by softengine

  I'm dealing with a large WPF application that is outputting a large number of binding errors. A typical error looks like this: System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='System.Windows.Controls.ItemsControl', AncestorLevel='1''. BindingExpression:Path=HorizontalContentAlignment; DataItem=null; target element is 'MenuItem' (Name=''); target property is 'HorizontalContentAlignment' (type 'HorizontalAlignment') Problem is I don't know where in the app this is coming from. Searching the entire solution for AncestorType={x:Type ItemsControl} doesn't necessary help since I still don't know which result is the culprit. I've tried setting PresentationTraceSources.DataBindingSource.Switch.Level = SourceLevels.All; but the extra information doesn't help locate the problematic bindings. File names and line numbers is really what I need. Is there anyway to get this information?

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• Why does Silverlight 4 Tools only give partial intellisense?

  - by Edward Tanguay

  I finally got Silverlight 4 Toolkit installed , referenced and working after the difficulty of finding the right namespace described in this question. But intellisense doesn't work fully: after I type "tk:", it doesn't pop up the various controls I have available, but if I type a control name out, e.g. DockPanel, then it works, as shown below. It will even give me intellisense after I type tk:DropPanel, which is odd. How can I get intellisense to work in all cases for the Silverlight 4 Toolkit? I can imagine I need another namespace, but this site says that this reference: is now all you need (and will be automatically used by both Visual Studio and Blend)

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