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  • How can I get my UserControl to look like a ComboBox?

    - by NoLuke
    I have a user control containing a TextBox, ToggleButton and Popup, just like the real ComboBox. Now my problem is to style it so that it looks just like the normal ComboBox. In Blend, I can "Edit Template/Edit a Copy..." of a real ComboBox to get the bits and pieces I need to get it to look right. For one Windows theme (Aero). If the application is run on another theme (e.g Luna), the control does not change its look, it still has the Aero look. Do I have to supply a style/template for each Windows theme, or can I somehow get hold of (at run-time) the default ComboBox style and apply it to my UserControl? Instead of making a UserControl, I have tried modifying a real ComboBox to my needs, but I just couldn't get it to work. How can I replace ALL the logic of a ComboBox with my own?

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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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  • 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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  • Can anyone provide a good "idiot's guide" to creating an installer in VS2008 (C#) Pro?

    - by paxdiablo
    I have Visual C# 2008 Professional and have developed the first half of a C# application (console mode) with the second half in progress now (GUI). I'm looking for an easy path to creating an installer for it. What are the steps that need to be taken to produce a professional installer? There's a similar question here regarding the Express edition but I have Pro, and I would like as much as possible to stick with just the standard VS stuff (if you think you can convince me that a third party installer creator is much better than a VS-only solution, give it a shot, by all means). Keep in mind that I have no interest in upgrading to VS2010 yet, even if it's a hundred times easier to create an installer. That can come later, when the revenue starts rolling in :-) Also be aware that the GUI component of this application is a totally separate executable from the console part. The console part is a simple "open file 1, do some work on it, write file 2" type and the GUI is a fairly standard "open file, do some stuff" beast so there's no tricky or wildly undocumented behaviour happening. Basically, I'm looking for (at least) the following: professional looking installer. ability to specify where the application files go. changes to the registry to allow double-clicks on my file extension to open the GUI app with the file as an argument. needs to install everything required (my stuff, .Net if required, and so on).

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  • Data-binding taking to long to update

    - by Justin
    In my application I have this code in my view model: hiddenTextContainer.PreHideVerticalOffset = VerticalOffset; hiddenTextContainer.HiddenText = Text.Remove(SelectionStart, SelectionLength); hiddenTextContainer.HasHiddenText = true; hiddenTextContainer.NonHiddenTextStart = SelectionStart; Text = Text.Substring(SelectionStart, SelectionLength); SelectionStart = Text.Length; hiddenTextContainer.ImmediatePostHideVerticalOffset = VerticalOffset; This code is used to hide selected text in a textbox. Text is a string property data bound to the text property of a textbox and VerticalOffset is a double property data bound to the VerticalOffset property of that same textbox. I need to save the VerticalOffset before and after the hiding of selected text takes place, but with my code below both hiddenTextContainer.PreHideVerticalOffset and hiddenTextContainer.ImmediatePostHideVerticalOffset are always set to the same value no matter what. I have figured out that this is because the text of the textbox has not been updated by the time the code reaches: hiddenTextContainer.ImmediatePostHideVerticalOffset = VerticalOffset; Is there any way I can fix this?

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  • Delay in the implementation of text change in Statusbar control

    - by ehsan zeynali
    I have a function a time consuming operation that is done I want to start and end operations appear to be user (By statusbar control) But when performed function, both text executed at the end of function. (user can not sees "Start Operation ...") What solution do you recommend to me? private void btnUpdateDataBase_Click(object sender, RoutedEventArgs e) { TextBlockStatus.Text = "Start Operation ..."; //Time consuming operation TextBlockStatus.Text = "End Operation ..."; }

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  • drag drop no longer working once application gets installed.

    - by Sdry
    I have an application that has drag and drop functionality to import images and video's. While developing, and testing through Visual Studio this has never given any problems. After installing through a set up project, everything in the application works fine, except the drag and drop, which seems to be doing nothing. Are there any security settings that need to be set through an installer, or something of that nature that could be preventing drag and drop after installation ?

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  • Populating a Combobox inside a Gridview

    - by Nawait
    i'm having a few problems working with a gridview and a combobox inside of it. Here is the code for my ListView control: <ListView Height="139" HorizontalAlignment="Left" Margin="10,158,0,0" Name="lvAppointment" VerticalAlignment="Top" Width="250" MinWidth="350"> <ListView.View> <GridView> <GridViewColumn Header="Appointment" Width="120"> <GridViewColumn.CellTemplate> <DataTemplate> <DatePicker SelectedDate="{Binding Path=Appointment}"/> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn Header="Type" Width="170"> <GridViewColumn.CellTemplate> <DataTemplate> <ComboBox ???/> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn Header="Done" Width="50"> <GridViewColumn.CellTemplate> <DataTemplate> <CheckBox IsChecked="{Binding Path=Done}" IsThreeState="False"/> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> </GridView> </ListView.View> I'm popluating the list from a sql ce database via c# with the following code using (SqlCeCommand sqlCeAppointment = new SqlCeCommand("SELECT appid,appointment,done,apptype.type FROM appointment INNER JOIN apptype ON appointment.refatid = apptype.atid WHERE refeventid = @eventid;", sqlCeConn)) { sqlCeAppointment.Parameters.AddWithValue("@eventid", ((cListEventItem)lvEvent.SelectedItems[0]).id); using (SqlCeDataReader sqlCeAppointmentReader = sqlCeAppointment.ExecuteReader()) { lvAppointment.Items.Clear(); while (sqlCeAppointmentReader.Read()) { lvAppointment.Items.Add(new cListAppointmentItem { id = sqlCeAppointmentReader.GetGuid(sqlCeTerminReader.GetOrdinal("appid")), Appointment = sqlCeAppointmentReader.GetDateTime(sqlCeTerminReader.GetOrdinal("appointment")), Type = sqlCeAppointmentReader.GetString(sqlCeTerminReader.GetOrdinal("type")), Done = sqlCeAppointmentReader.GetByte(sqlCeTerminReader.GetOrdinal("done")) }); } } } I can popluate the list just fine. But i want "Type" to be a combobox so the user can select the apropriate type of the appointment (its a list of appointments connected to an event). This combobox should be filled with data thats inside a table of the sql ce database (apptype). This table is not static, the users can add and delete items from this list. I have tried a few ways i found via google, but failed. I guess i'm having problems understanding how this works/should work. I hope someone can help me :( Thanks in advance

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  • C# MVVM Calculating Total

    - by LnDCobra
    I need to calculate a trade value based on the selected price and quantity. How can The following is my ViewModel: class ViewModel : ViewModelBase { public Trade Trade { get { return _trade; } set { SetField(ref _trade, value, () => Trade); } } private Trade _trade; public decimal TradeValue { get { return Trade.Amount * Trade.Price; } } } ViewModelBase inherits INotifyPropertyChanged and contains SetField() The Following is the Trade class: public class Trade : INotifyPropertyChaged { public virtual Decimal Amount { get { return _amount; } set { SetField(ref _amount, value, () => Amount); } } private Decimal _amount; public virtual Decimal Price { get { return _price; } set { SetField(ref _price, value, () => Price); } } private Decimal _price; ...... } I know due to the design my TradeValue only gets calculated once (when its first requested) and UI doesn't get updated when amount/price changes. What is the best way of achieving this? Any help greatly appreciated.

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  • Help creating a dll for a custom control

    - by Chapso
    I'm going to ask a newbie question here. I need to use a control I found online in my code, but it was written in the wrong language. It is in C# and I am using VB.net for work. I have all of the code for the control which works beautifully in C#, but I had issues with it not working very well in VB. The source code and a demo project are available here, but I am not sure exactly which files I should use to build the dll for VB. It seems a lot to ask, but would someone mind taking a look and pointing me in the right direction? Cheers

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  • disabling a window

    - by Arno Greiler
    In my application I have a button. If the button is clicked as select against a database is executed and the result is shown in a ListView. As the select is quite complex, it takes some time to retrieve the data. When I click the Button, the Application-Window should be disabled until the data is loaded. But when I set the IsEnabled-Property of the Window to false, the Window gets disabled after the data is loaded. I tried to disable the Window in an other thread with a BackgroundWorker. But then I get an exception that the Window is alreay in use by an other thread. How can I disable the Window bevore it retrieves the data?

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  • Binding a TextBox's Width to its parent container's ActualWidth

    - by Praetorian
    Hi, I'm loading a Textbox and a Button into a horizontal StackPanel programmatically. The size of the button (which only contains an Image) is fixed, but I can't get the textbox to fill the available width of its parent. This is what the code looks like: StackPanel parent = new StackPanel() { Orientation = Orientation.Horizontal, HorizontalAlignment = HorizontalAlignment.Stretch, VerticalAlignment = VerticalAlignment.Top, }; TextBox textbox = new TextBox() { HorizontalAlignment = HorizontalAlignment.Stretch, VerticalAlignment = VerticalAlignment.Top, //MinWidth = 375, }; Button btn = new Button() { Content = new Image() { MaxHeight = 40, MaxWidth = 40, MinHeight = 40, MinWidth = 40, Margin = new Thickness( 0 ), Source = new BitmapImage( new Uri( "btnimage.png", UriKind.Relative ) ), }, HorizontalAlignment = HorizontalAlignment.Right, BorderBrush = new SolidColorBrush( Colors.Transparent ), Margin = new Thickness( 0 ), }; btn.Click += ( ( s, e ) => OnBtnClicked( s, e, textbox ) ); parent.Children.Add( textbox ); parent.Children.Add( btn ); If I uncomment the MinWidth setting for the textbox it is displayed as I want it to, but I'd like to not have to specify a width explicitly. I tried adding a binding as follows but that doesn't work at all (the textbox just disappears!) Binding widthBinding = new Binding() { Source = parent.ActualWidth, }; passwdBox.SetBinding( TextBox.WidthProperty, widthBinding ); Thanks for your help in advance!

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  • Setting Frame.Content doesn't always work

    - by dan gibson
    I have a Frame control and I'm setting the Content property. If I set it twice, first to one control then to another, it shows the first control instead of the second. If I display a message box after setting it the first time then it works fine (ie it displays the second control). It's like I can only set Content once until the screen has been repainted. Calling Frame.UpdateLayout also doesn't help. What should I call after setting Content so that I can be sure that Content is actually set to what I specify?

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  • sqlite3 not found but it was already added as reference

    - by Joef Clarin
    System.DllNotFoundException was unhandled Message=Unable to load DLL 'sqlite3': The specified module could not be found. I already reference the DLL. I check it on Debug folder and it was there. I also search how to "include" it in the project but they don't specifically explain how to do it. I'm following this example: http://www.codeproject.com/Articles/22165/Using-SQLite-in-your-C-Application

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  • C# Read Byte [] to Image

    - by LucasGuitar
    I have an application which I'm adding pictures and these are automatically converted to binary and stored in a single file. how can I save several images, I keep in an XML file start and size of each set of refente to an image byte. But it has several images in bytes, whenever I try to select a different set of bytes just opening the same image. I would like your help to be able to fix this and open different images. Code //Add Image private void btAddImage_Click(object sender, RoutedEventArgs e) { OpenFileDialog op = new OpenFileDialog(); op.Title = "Selecione a Imagem"; op.Filter = "All supported graphics|*.jpg;*.jpeg;*.png|" + "JPEG (*.jpg;*.jpeg)|*.jpg;*.jpeg|" + "Portable Network Graphic (*.png)|*.png"; if (op.ShowDialog() == true) { imgPatch.Source = new BitmapImage(new Uri(op.FileName)); txtName.Focus(); } } //Convert Image private void btConvertImage_Click(object sender, RoutedEventArgs e) { if (String.IsNullOrEmpty(txtName.Text)) { txtName.Focus(); MessageBox.Show("Preencha o Nome", "Error"); } else { save(ConvertFileToByteArray(op.FileName), txtName.Text); } } //Image to Byte Array private static byte[] ConvertFileToByteArray(String FilePath) { return File.ReadAllBytes(FilePath); } //Save Binary File and XML File public void save(byte[] img, string nome) { FileStream f; long ini, fin = img.Length; if (!File.Exists("Escudos.bcf")) { f = new FileStream("Escudos.bcf", FileMode.Create); ini = 0; } else { f = new FileStream("Escudos.bcf", FileMode.Append); ini = f.Length + 1; bin = new TestBinarySegment(); } bin.LoadAddSave("Escudos.xml", "Brasileiro", nome, ini, fin); BinaryWriter b = new BinaryWriter(f); b.Write(img); b.Close(); f.Dispose(); } //Load Image from Byte private void btLoad_Click(object sender, RoutedEventArgs e) { getImageFromByte(); } //Byte to Image public void getImageFromByte(int start, int length) { using (FileStream fs = new FileStream("Escudos.bcf", FileMode.Open)) { byte[] iba = new byte[fs.Length+1]; fs.Read(iba, start, length); Image image = new Image(); image.Source = BitmapFrame.Create(fs, BitmapCreateOptions.None, BitmapCacheOption.OnLoad); imgPatch2.Source = image.Source; } }

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  • Can you view XAML as "regular" .net code (c#\vb.net)?

    - by cody
    There are times when I find some example XAML that I want\need to do in code (c#\vb.net). I assume at some point the XAML becomes code, or at least IL. So my questions: Am I correct in assuming that XAML is converted to IL? (or if not IL what does it become?) If the above is correct, when does XAML become IL (or whatever it becomes)? Is there some way to see the XAML in as "code" Thanks.

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  • connecting to multiple resources

    - by Dudu
    I would like to know if there is a way to connect to multiple resources: Specifically I have the following problem abstact class BaseClass { ObservableCollection<BaseClass>; } class GrandSonClass:BaseClass{} class SonClass:BaseClass{} class FatherClass:BaseClass { CollectionViewSource col = new CollectionViewSource ; col.Source = Items.SelectMany(p => p.Items); } FatherClass's Items are of ChildrenClass type, and ChildrenClass's Items are of GrandSonClass type; I want FatherClass to bind to all the GrandSonClass's items it possesses. The solution of using SelectMany is not good as I need this to be dynamically updated whenever FatherClass adds more Items and whenever its Items(SonClasses) add more Items. Now I could go on and write notifiaction events but I was wondering if there is a smarter way to do it -i.e. simply define the sources as the Items of each Item FatherClass posses

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  • How do XAML files associate with cs files?

    - by LLS
    It seems that XAML files should have corresponding .cs files in a C# project. I know Visual Studio does all the things for us. I'm just curious how they are linked together? I mean, are they specified in the project file, or just because they have the same names? And also, App.xaml file specifies the startup file, but how does the compiler know? Is it possible to appoint another file other than App.xaml to do the same things as App.xaml does?

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  • Window sizing constraints by content

    - by EFraim
    I want the window to respect MinWidth/MinHeight and MaxWidth/MaxHeight specifications of the content control inside. Some suggested using SizeToContent, but this only helps to set the initial window size, not the constraints. Others suggested overriding MeasureOverride and setting window's Min/Max height and width there, but this seems to be somewhat unclean, considering that such a trivial problem should surely have a purely declarative solution. Just to mention another solution which seems reasonable but does not work (and had been previously mentioned in an answer which got deleted): binding MinWidth of the window to MinWidth of the control does not take into account window decorations.

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  • Window opened from DataGrid is placed in background

    - by 0xddr
    One column in DataGrid looks like that: <DataTemplate> <StackPanel> <Image MouseDown="OpenWindow" /> <Image MouseDown="func2"/> </StackPanel> </DataTemplate> In OpenWindow window is opened: it starts opening in foreground (in front of the window with DataGrid), but when creating UI ends it is placed behind window with DataGrid, which is not expected behavior. When I changed Image to Button and MouseDown to Click everything works as it should (opened window is placed in front of the one with DataGrid).

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  • What should I use to replace the WinAPI Beep() function?

    - by Jon Cage
    I've got a Visual C++/CLI app which uses beeps to signify good and bad results (used when the user can't see the screen). Currently I use low pitched beeps for bad results and high pitched beeps for good results: if( goodResult == true ) { Beep(1000, 40); } else { Beep(2000, 20); } This works okay on my Vista laptop, but I've tried it on other laptops and some seem to play the sounds for less time (they sound more like clicks than beeps) or the sound doesn't play at all. So I have two questions here: Is there a more reliable beep function? Is there a (simple) way I can play a short .wav file or something similar instead (preferred solution).

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  • how to generate an N level tree using datatable?

    - by Kishore Kumar
    I have a DataTable with column ID, Name, RootID. The tree stucture is implmented using the RootId field. If the RootId is null it is considered as Root Node. How to create an Nlevel tree using the DataTale. eg. 1 Manager null, 2 Project Lead 1, 3 Test Lead 1, 4 Sr Soft Eng 2, 5 Soft eng 2, 6 HR Manager Null, 7 HR exec 6, ......

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  • Fill all avaible space.

    - by Neir0
    Hi! I have a xaml code: <Grid> <WrapPanel> <TextBox ></TextBox> <Button Content="GetIt" /> </WrapPanel> </Grid> How i can to get all avaible space for textBox? i want to do something like that: |[__________][GetIt]|

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