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• WPF UserControl event called only once?

  - by 742

  Hi Everyone, I need to bind two-way a property of a user control to a property of a containing user control. I also need to set a default value to the property from code in the child (cannot be done easily from XAML tags). If I call my code from the child constructor, the value is set in the parent but the change callback routine is not triggered (my understanding is that the parent doesn't yet exist at the time the child is created). My current workaround is to catch the Loaded event of the child and to call the code from the handler. Howver as Loaded is called more than once, I need to set a flag to set the property only the first time. I don't like this way, but I don't know if there is a single shot event that could be used, or if this can be done otherwise. Any feedback based on your experience?

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• I overwrote a large file with a blank one on a linux server. Can I recover the existing file?

  - by user39234

  I came back to my machine, tried saving a file over ssh onto my linux server (CentOS). It failed. I wasn't interested in keeping any changes I had made so I closed my editor and reopened the file (over ssh). The save attempt wiped the file. I have made loads of changes to it since I last uploaded to revision control. Seeing as it has just wiped the file I assume the data is still there. It's just a text file (php), is there any way of recovering it?

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• WPF ComboBox Binding + Selected Index for object.

  - by abmv

  I have a case of WPF binding I want to solve: The issue is that I have a user detail screen and it has a employee combo box that gets filled with employees. cbxEmployee.ItemsSource = DataAccess.GetCollectionView("Employee", "[Active] = True", viewModel.Context); cbxEmployee.DisplayMemberPath = "FullName"; cbxEmployee.SelectedValuePath = "ID"; The binding in user detail screen xaml is for the user object, I just need the employee id to store in the int property.So no problems when the user selects an employee. <ComboBox x:Name="cbxEmployee" SelectedItem="{Binding Path=Employee,ValidatesOnExceptions=True}" SelectedValue="{Binding Path=AssociatedEmployeeId}" Style="{DynamicResource InputBaseStyle}"/> Now the issue is that when an existing object is edited I need the combo box to get the correct employee to be shown,i.e the index should be set at the correct employee for the AssociatedEmployeeId of the user object. Well how the heck should I do it ? Any advice?

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• Don't show Data in DataGrid

  - by mSafdel

  Hi in my app, I used WCF Services for load data from SQL DB then in Completed Event Handler of my ServiceClient write this code: void svc_GetOrdersCompleted(object sender, GetOrdersCompletedEventArgs e) { if (e.Error == null) { dgOrders.ItemsSource = e.Result; txtStatus.Text = ""; } else txtStatus.Text = "Error occured while loading orders from database"; } dgOrders is my DataGrid and And AutoGenerateColumns set to True. in line 5: eResult have a number of Order objects but after this code DataGrid can't show data. Why? this ia my xaml for dgOrders: <data:DataGrid x:Name="dgOrders" Grid.Row="0" Grid.Column="1" AutoGenerateColumns="True" SelectionChanged="dgOrders_SelectionChanged" Foreground="Green"> </data:DataGrid> this is my Source code please guide me.

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• There is more then one Point class

  - by Dmitry

  Today I hit something very annoying while working with one of my colleagues. It seems there are two Point classes in .NET and by mistake we were trying for a good few minutes to figure out why our "Point(x,y)" wouldn’t take double, but only Int. Turns out we were using the wrong one since the XAML element in question needed the version with Double. So, based on what you actually want to do, make sure you’re using the right namespace. Please see below for MSDN reference links for each namespace version of Point, hope this saves you some time. System.Windows Point (MSDN Ref - Double version) System.Dawing Point (MSDN Ref - Int version)

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• Does Gedit have cool keyboard shortcuts?

  - by Kelp

  I have used Vim before and I love the keyboard shortcuts, but I hate having to copy and paste, so I am looking for a text editor that makes it easier. I have been trying Gedit. It's cool. But I really miss the being to create a new line, going to the end of the line, going to the beginning of the line, deleting a line with keyboard shortcuts. I tried to look up "gedit keyboard shortcuts" but all it came up with was how to save a file. Basic things.

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• How do you escape parentheses in a Binding indexer

  - by Chris S

  I have the following XAML: <Grid x:Name="LayoutRoot" Background="White" DataContext="{Binding Source={StaticResource MyDataKey}}"> <TextBox Name="_myId" Text="{Binding MyDictionary[(Textbox.Name)]" /> </Grid> But it thinks the key in my dictionary is called "(Textbox.Name)", instead of "_myId". The format below works, where I have a property in my class called "_myId": <TextBox Name="_myId" Text="{Binding (Textbox.Name)" /> I've tried using ^ and \ to escape the brackets. Is this syntax supported? I'm trying to avoid duplication of the name in two attributes.

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• How can I change the font color of the VS2012 Source Control Explorer window?

  - by RM.

  I am using Visual Stuido 2012 Integrated Shell with Team Explorer. I would like to change the default font color of the mapped and not mapped folders in the Source Control Explorer (in the treeview). I tried the Visual Studio Color Theme editor, but it seems like the font color of the Source Control Explorer and the Team Explorer can not be changed by it. I also looked at Tools|Options|Environment|Fonts and Color for a setting but did not find anything. Is it possible to change the font color? How?

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• How can I get OS/X-like switch windows of same program bound to hotkey with linux GUIs?

  - by dbenhur

  On OS/X, Command-~ switches between windows associated with the program with current focus. This is very handy when toggling through a set of browser windows or editor windows, for example. A couple years ago I noticed someone using similar functionality on a Gnome linux laptop and they showed me how to set it up, but I forgot the details (so I know it's possible). I frequently switch between MacBook and a variety of linux systems running Gnome, Unity, and occasionally KDE. My Google-fu failed so I turn to stack exchange: How do I bind Alt-~ or similar key to give me functionality to switch between windows of program with current focus?

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• Inbox should not contain any calendar appointment

  - by cotablise

  Imagine two users A and B.User B has editor rights on mailbox A via delegation. Delegation settings: User A should not receive any invitation (calendar appointments). All should be routed to user B. It works fine when you are connected to mailbox via Outlook. Problem is that sometimes it does not work when user is connected via his iPhone (he receives calendar appointments in inbox). I know that this feature for MS products and therefore it works on MS Outlook. But user A told me that it worked in the past also on iPhone with user C. Problem is that nowadays it does not work perfectly for user B. Do you have any suggestion please? Thank you in advance.

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• WPF Converter to look up in generic list

  - by user310046

  I have a list of data where I keep e.g. countries with code, name and some other data. List<Country> countries = <deserialized objects from file> which consist of objects like this: public class Country { public string Code { get; set;} public string Name { get; set;} } The object which use as a DataContext may look like this: public class Address { public string StreetName{ get; set;} public string CountryCode { get; set;} } Then in my XAML I want to do something like this to show the name of the country <TextBlock Text="{Binding Path=CountryCode, Converter={StaticResource CountryNameLookupConverter}}"/> But how can I make the CountryNameLookupConverter use the countries list I read from the xml file?

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• Flash Player is creating thousands of .tmp files

  - by Ed Manet

  We have seen a number of machines in our environment (XP Pro SP3) that have been running out of disk space because of .TMP files in the windows\temp folder. One machine had 6GB of .TMP files on it starting from around August 2010. The files are all 305kb in size and they seem to get created every 10 minutes. The files appear to be either .EXEs or .DLLs when opened in a hex editor. The words "this program can not be run in DOS mode" are at the beginning of the file and the words "Adobe Flash Player" are scattered all over the end of the file (probably the string table). While it's easy enough to clean them up, I'd like to find root cause for the issue. Has anybody else seen this?

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• WPF Databinding and Styling based on Data in an item in an IList

  - by Nate Bross

  I have a ListBox bound to a list of Items (for arguement, lets say its got a string and two dates Entered and Done). I would like to make the background color of items in the ListBox have a gray color if the Done DateTime is != DateTime.MinValue. Edit: Should I make a converter? and convert DateTime to a Brush based on the value of the DateTime? Is something like this my best option? or is there a simple Xaml snippet I could use? [ValueConversion(typeof(DateTime), typeof(Brush))] class MyConverter : IValueConverter { ... }

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• How to set ItemsSource?

  - by Mark

  This dialog makes no sense to me And I'm having trouble finding good tutorials on it. Most of the examples aren't detailed enough, or do stuff via code, but I'd like to take advantage of the IDE as much as possible. Whats the difference between ItemsSource and DataContext? I'd like to bind it to just a List for starters. I don't need SQL or databases or anything fancy. Where would I declare my list? In MainWindow.xaml.cs? How do I get it to appear in that dialog?

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• WP7 - attempt to select and use application static resource in codebehind not working (no resources found).

  - by pearcewg

  With Windows Phone 7, I'm attempting to dynamically add controls to and object in codebehind, and apply a StaticResource to the new control. Xaml file sample: <phone:PhoneApplicationPage.Resources> <ControlTemplate x:Key="PushpinControlTemplateBlue" TargetType="my2:Pushpin"> ... </ControlTemplate> </phone:PhoneApplicationPage.Resources> Codebehind sample: >Pushpin myPush = new Pushpin(); >myPush.Location = new GeoCoordinate(52.569593, -0.9261151403188705); >myPush.Content = ""; >myPush.Template = (ControlTemplate)Application.Current.Resources["PushpinControlTemplateBlue"]; >mapMain.Children.Add(myPush); When I debug, and look at "Application.Current.Resources", there are no items in the collection, so the item is added to the controls list, but doesn't show up because it has no content. Is there something simple I'm doing wrong? How do I correctly access the resource?

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• WPF Custom Navigation Buttons and calling one page from another

  - by Jeff

  I have a window which contains a Frame which references a 'home' page that has buttons on it. When a button is clicked I want another page to show depending on which button was pressed. I attempted to use NavigationService.Navigate('mynextpage.xaml') and that works however, I want to use a customized navigation panel. I call this.ShowsNavigationUI = false; on my 'home' page but the bar still shows. Is there a way to accomplish what I am trying to do? My page with the frame is a window so I do not know how to disable the Navigation bar there where I guess it is coming from. Further testing shows that the ShowsNavigationUI property is false yet the nav bar shows itself in the parent window once there is a second page to go to (showing the 'home' page in the history. TIA

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• How can I restore the stored password in firefox 15.0.1 when deleted by error?

  - by Bob Legringe

  I, by error, deleted my stored passwords, using the "Wise disc cleaner 7" program. As I saw on another thread, the passwords are stored in 2 files signons.sqlite and the encryption key file key3.db When opening the file signons.sqlite with the text editor, I can see that the web adresses of the sites belonging to the passwords are still there. They have not been deleted by the "Wise disc cleaner 7" program, and adding a stored password on Firefox just modifies the file. However, Firefox will not display my old stored passwords and neither their respective sites. Is there any way to "undelete" the passwords?

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• Programmatic binding in Silverlight

  - by MojoFilter

  I'm missing the boat on something here, kids. This keeps rearing its head and I don't know what's going on with it, so I hope my homeys here can help. When working in Silverlight, when I create bindings in my c# code, they never hold up when the application is running. The declarative bindings from my xaml seem ok, but I'm doing something wrong when I create my bindings in C#. I'm hoping that there is something blindingly obvious I'm missing. Here's a typical binding that gets crushed: TextBlock tb = new TextBlock(); Binding b = new Binding("FontSize"); b.Source = this; tb.SetBinding(TextBlock.FontSizeProperty, b);

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• Editing remotely the PHP files on a Centos server

  - by Alex2012

  I have a intranet web server (Centos 6, Apache, PHP) to which I would like to give access to a developer. He will connect by remote desktop from Windows 7 to Ubuntu 12.4 and from here by SSH to /var/www/html folder where it has to create and edit the files. This solution was chosen because: - I could not make a remote desktop connection from Windows to Centos - The web developer need some editor for PHP files and is not allowed to install software on Windows 7 machine - it is more a test solution ( we are all learning to use Linux). When the developer is connected from Ubuntu to Centos by SSH (SFTP) he could save the changes only if on Centos the account used to connect has ownership to that folder. Can you please tell how can I give all required rights. I tried different solutions found on Internet but without to much success. Are there other way to connect to Centos server?

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• How to read a Dependency property from a method

  - by PaN1C_Showt1Me

  XAML: <my:Control ItemsSource="{StaticResource MySource}" A="true" /> Assume a Control with a dependency property A with a default value false; and a method to handle the Source Collection: protected override void OnItemsSourceChanged(System.Collections.IEnumerable oldValue, System.Collections.IEnumerable newValue) {} in which you want to look at A and readout its value (which is true). how would you ensure, that A is already initialized and has a given value? Or how should this be done correctly ? In my case A is something like AllowLateBinding .. Could coerce callback help me?

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• nm-applet and nmcli don't work in arch

  - by user1780765

  I installed arch linux about two weeks ago. But I still can't use Network Manager. When I use nm-applet command, I get this error: https://gist.github.com/4129816 And when I use nmcli con command, I get this: https://gist.github.com/4129837 sudo doesn't help me neither. D-Bus look fine, I can use dbus-monitor. I installed gnome, but I still can't use NM. I 'm using openbox now. I have another problem too: what should do so I can use nm-connection-editor with non-root users?

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• The best practice to setup hierarchy data

  - by eski

  I'm trying to figure out the best practice to setup hierarchy data that i take from a database into some contoller that would show the hierachy. Basicly this would look like a normal tree but when you press the items that are under "chapters" you get a link to another page. I have these tables and this is the way they are connected Period Courses Subjects Chapters I select Period from a DropDownBox and then i want all the courses in that period to line up. Under each course would be the subject and under them are the chapers, typical hierarchy. The tables are linked together with refrences to each other in linear way. I have tried to use treeview to show this, but dont understand how to do it. I though i could use <ul><il> tags and do it at runtime. Reapeter or datalist, possible ? Is it better to do this with databinding in XAML or in code ?

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• Editing files on linux server from windows

  - by celicni

  I want to edit text files on Linux server from Windows, using text editor like Notepad++ or UltraEdit. I've managed to do so using WinSCP. It can edit files remotely and offers me to choose local application to open those files. That is exactly what I need, but when I hit ctrl-s (not every time, in about 50% cases), it waits for around 10 seconds, alerts that connection has failed, and offers me to "abort". When I click abort, it instantly reconnect and save file. So does anybody knows any other way to edit files remotely without this annoying waiting period.

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• How to bind WPF TreeView to a List<Drink> programmatically?

  - by Joan Venge

  So I am very new to WPF and trying to bind or assign a list of Drink values to a wpf treeview, but don't know how to do that, and find it really hard to find anything online that just shows stuff without using xaml. struct Drink { public string Name { get; private set; } public int Popularity { get; private set; } public Drink ( string name, int popularity ) : this ( ) { this.Name = name; this.Popularity = popularity; } } List<Drink> coldDrinks = new List<Drink> ( ){ new Drink ( "Water", 1 ), new Drink ( "Fanta", 2 ), new Drink ( "Sprite", 3 ), new Drink ( "Coke", 4 ), new Drink ( "Milk", 5 ) }; } } How can I do this in code? For example: treeview1.DataItems = coldDrinks; and everything shows up in the treeview.

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• How to prevent carriage return being copied to clipboard in Powershell?

  - by user610209

  I have a powershell script that is hashing the MAC address, then posting it into a file and a clipboard. $hash = [System.BitConverter]::ToString($md5.ComputeHash($utf8.GetBytes($MAC))) $hash | clip $hash | Out-File $Env:USERPROFILE\Desktop\this.txt The issue I am having is that a carriage return is being exported to the clipboard. I don't want that. Is there a way of stopping that happening? Additional info - When I paste the text that is on the clipboard into a hex editor I see 0D0A The clipboard function would be fine if I could just loose that some how? Thanks

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