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  • ListView containing Bitmaps with Zoom Animation in WPF

    - by Ashish Ashu
    I have a simple requirement as mentioned below: A ListView or any control displays list of bitmaps/images. When user mouse hovers on any bitmap that bitmap zoomed to show that is currently selected. Since I have to provide drag drop operations and click operation that why I taken the list view. Pleas help!! It will be great if any body provide the xaml to this..

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  • To show the help related information in WPF.

    - by Ashish Ashu
    I have several dialogs in the application. I want to pop up help related box when user clicks on the help button next to Main Heading. The help box is activated by selecting the small blue icon next to the heading. When the help box appears it has the information that is required to understand the entry related to the dialog. This help box automatically disappears when user clicks any where other then the help box. Please help!!

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  • Why does WPF toggle button pulse once unchecked

    - by randyc
    Wihtin a Desktop app I have a toggle button: For the Checked event I am setting a value and then executing a method FilterView(); //ommitting code Unchecked state is just the opposite. resets a variable and executed the method again The question I have is I noticed when I uncheck the toggle button the button continues to pulse or flash ( going from blue to chrome) as if it still has focus. The button will stay like this until another button is clicked. Is there a way to remove this focus so that when the button is unchecked the button goes back to a unchecked state without the flashing / pulsing color. As you can see from above this is a standard toggle button no styles or custom I tested this on just a regular button and I found the same occured when clicked the button will continue to pulse / flash until another button is clicked. How do you work around this or prevent this effect from happening. Thank you

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  • Date Picker Today Option In WPF

    - by Asim Sajjad
    Is there any property , option available in the date picker control so that if user want to select today from any date from current date ? e.g if user is view current month of last year then he has the option to select current date ?

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  • Wpf nesting containers

    - by dortzur
    On a window control, my main container is a grid. My grid has 2 rows, one row definition is 50*, and the other is 250*. Now i want to add a right sidebar, lets say with a StackPanel. I would like to have a ListBox inside the StackPanel that aligns with the 50* grid row, so as the window height gets bigger, the ListBox size will also get bigger. My question is whether i can achieve this behavior while the ListBox is inside the StackPanel (which is nested inside the grid) or must the ListBox be placed directly inside the grid?

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  • WPF: Databinding and Combo Boxes

    - by Jonathan Allen
    I have two classes Company CompanyKey CompanyName Person FirstName LastName CompanyKey The list items on the combo box is bound to a collection of CompanyObjects. How to I databind the selected item property of the Combobox to the Person.CompanyKey property?

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  • WPF DataGrid default column types

    - by Trindaz
    Hi, I'm using a DataGrid to display 2 possible types of DataRow in a DataTable. One type has the column Parent = NULL and the other has Parent set to another DataRow in the same DataTable. The list of column in the DataTable is always different, so explicitly describing each column is not possible. I want to display a UserControl in every cell of the Parent = DataRow rows, and default Text / Check boxes for the Parent = NULL rows. My first strategy is to try and set the default Column type for all automatically generated columns to be a DataGridTemplateColumn, regardless of datatype, so that I can use styles to then use either my UserControl or CheckBox or TextBox where required. How can I do this? More importantly, though, is there a better strategy than this? Cheers, Dave

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  • WPF DataGrid - Can't Use Mouse To Scroll Because Of Drag Drop

    - by OrPaz
    Hello, I am using a datagrid that is allowing to drag its rows. My problem is that when i try to scroll down on my grid using the mouse on the side scroller, i get the 'no enterance' sign that means that "drag and drop is not allowed here, dude...". How can i modify my drag and drop function to recognize that this is not a drag and drop action, but a scroll mouse action? private new void MouseMove(object sender, MouseEventArgs e) { if (e.LeftButton == MouseButtonState.Pressed) { Point currentPosition = e.GetPosition(GridUC); Object selectedItem = GridUC.SelectedItem; if (selectedItem == null) return; DragDropContainerObject ddObject = new DragDropContainerObject(typeof(Actor), selectedItem); DataGridRow container = (DataGridRow)GridUC.ItemContainerGenerator.ContainerFromItem(selectedItem); if (container != null) { DragDropEffects finalDropEffect = DragDrop.DoDragDrop(container, ddObject, DragDropEffects.Link); } } }

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  • wpf prevent second click button

    - by neki
    hi! i have a problem again. when i click button, window appears. when i click button again same window appears again. i want when i click button first time, page appears. but i wanna prevent second click. can anyone help me about this problem? thanks in advance. private void Dictionary_Click(object sender, RoutedEventArgs e) { Dictionary dic = new Dictionary(); dic.Show(); dic.Topmost = true; }

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  • WPF: UnauthorizedAccessException using anonymous methods.

    - by Diego Pacheco Pedemonte
    Here is the thing, I want to create a simply app that copy many files from one site, and move them to another; but using async methods and create a new thread. private void button3_Click(object sender, RoutedEventArgs e) { //progressBar1.Maximum = _FileInfoArray.Count; DispatcherTimer dt1 = new DispatcherTimer(); foreach (FileInfo Fi in _FileInfoArray) { Thread t = new Thread(new ThreadStart(delegate() { DispatcherOperation _dispOp = progressBar1.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(delegate() { File.Copy(txtdestino.Text, Fi.FullName, true); //progressBar1.Value = n; //txtstatus.Content = ("Copiados " + n.ToString() + " archivos"); //Thread.Sleep(100); } )); _dispOp.Completed += new EventHandler(_dispOp_Completed); } )); t.Start(); } } UnauthorizedAccessException is throw! It says that I can't access to txtdestino content. Some clues? -------------------------------------------------------------------------------Edited This is the version with all the changes, get the same error :( any clues? private void button4_Click(object sender, RoutedEventArgs e) { //First: Build mynames List<string> mynames = new List<string>(); foreach (FileInfo fi in _FileInfoArray) { mynames.Add(fi.FullName); } Thread t = new Thread(new ThreadStart(delegate() { foreach (string fullname in mynames) { DispatcherOperation _dispOp = progressBar1.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(delegate() { string destino = System.IO.Path.Combine(@"C:\", System.IO.Path.GetFileName(fullname)); File.Copy(fullname, destino, true); //Some progressbar changes } )); _dispOp.Completed += new EventHandler(_dispOp_Completed); } } )); t.Start(); } File.Copy(txtdestino.Text, Fi.FullName, true); // here the exception is throw

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  • WPF Textbox "normal" text input

    - by Ash Rowe
    G'day, I'm not sure if this is a problem relevant to only me or if anyone else has this issue also. None the less, I'll try and describe what is going on here. I have a few textbox's, default style, etc. I set an explicit maxwidth and maxheight to prevent resize when the text exceeds the default width of the textbox. The issue is that the text wraps to the next line, but I only want single line. So I set maxlines to 1 and textwrapping to NoWrap. That's fine. Now the carat and typed text disappears under the edges of the textbox when the width is exceeded and the only way I can get the carat and newly typed text back into view is by pressing the left and right arrows. Coming from MFC and using textboxes all the time with HTML, I would have thought the default behaviour would be to have the textbox content scroll with the carat or am I missing something here? Thank you, Ash

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  • Rendering order in ContentControl - WPF

    - by Eden
    Hi, There is something that I don't understand regarding ContentControl: I've a class that inherits from ContentControl, and it overrides the OnRender method. And although I don't call base.OnRender(drawingContext) still the content is being rendered... How come? What am I missing? Thanks, Eden

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  • WPF WrapPanel with some items having a height of *

    - by Aphex
    How do I make a WrapPanel with some items having a Height of *? A deceptively simple question that I have been trying to solve. I want a control (or some XAML layout magickry) that behaves similar to a Grid that has some rows with a Height of *, but supports wrapping of columns. Hell; call it a WrapGrid. :) Here's a mockup to visualize this. Imagine a grid defined as such: <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="400"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <Button Grid.Row="0" MinHeight="30">I'm auto-sized.</Button> <Button Grid.Row="1" MinHeight="90">I'm star-sized.</Button> <Button Grid.Row="2" MinHeight="30">I'm auto-sized.</Button> <Button Grid.Row="3" MinHeight="90">I'm star-sized, too!</Button> <Button Grid.Row="4" MinHeight="30">I'm auto-sized.</Button> <Button Grid.Row="5" MinHeight="30">I'm auto-sized.</Button> </Grid> </Window> What I want this panel to do is wrap an item into an additional column when the item can not get any smaller than its minHeight. Here is a horrible MSPaint of some mockups I made detailing this process. Recall from the XAML that the auto-sized buttons have minHeights of 30, and the star-sized buttons have minHeights of 90. This mockup is just two grids side by side and I manually moved buttons around in the designer. Conceivably, this could be done programmatically and serve as a sort of convoluted solution to this. How can this be done? I will accept any solution whether it's through xaml or has some code-behind (though I would prefer pure XAML if possible since xaml code behind is tougher to implement in IronPython). Updated with a bounty

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  • Collapsed Visibility Within a WPF ComboBoxItem

    - by user832747
    I used a Style setter to stretch out my ComboBoxItem (and button) so that it spans the entire length of the ComboBox like so: <ComboBox > <ComboBox.Resources> <Style TargetType="ComboBoxItem"> <Setter Property="HorizontalContentAlignment" Value="Stretch" /> </Style> </ComboBox.Resources> <ComboBoxItem > <DockPanel > <Button Content="My Button" /> </DockPanel> </ComboBoxItem> </ComboBox> This works fine. Now, I add an additional button within the same ComboBoxItem, but have it set to Visibility Collapsed. <ComboBox > <ComboBox.Resources> <Style TargetType="ComboBoxItem"> <Setter Property="HorizontalContentAlignment" Value="Stretch" /> </Style> </ComboBox.Resources> <ComboBoxItem > <DockPanel > <Button Content="My Button" /> <Button Content="My Collapsed Button" Visibility="Collapsed" /> </DockPanel> </ComboBoxItem> </ComboBox> Now, the new button is invisible, but I expected my original button to still stretch the entire ComboBox, like it does with the above code. However, it does not. Why is this so? Is there a solution for this? I am using DataTriggers to edit the Visibility property. NOTE: I also get the same thing if I just set HorizontalContentAlignment="Stretch" in the ComboBox. UPDATE: Ok, this actually has something to do with the DockPanel. I changed it to a StackPanel, and it works as desired. However, I suppose I'm still curious as to why my first button would not stretch the entire DockPanel if the second button is collapsed?

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  • How to reuse layouts in WPF

    - by Ingó Vals
    I'm trying to create a application that will be tabbed where each tab will have a button area and a view area. Now each tab will essentially have the same layout just different things in the layout and I wanted to be able to reuse the same layout so that I won't have to change at many places ( it's just not good programming ). Can I accomplish this using resources or perhaps Styles. Please supply a light code example if possible.

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  • 'Graying Out' a WPF button image?

    - by David Veeneman
    I have a simple Button control that contains an Image object as its content. I want so set the Image opacity to 0.5 when the Button is disabled to provide an additional visual cue as to the Button status. What is the simplest way to accomplish that result in XAML? Thanks for your help.

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  • Wpf: Loading DataGrid in Groupbox causes Groupbox to be too tall

    - by Rick Make
    I have a GroupBox that contains a stackpanel holding a textbox and a datagrid. When I use the textbox to populate the datagrid. Sometimes I need to load the datagrid with values. What I am noticing is that when the groupbox renders when the datagrid has values that the height of the groupbox is maxed out to the size of its parent container. And when I add a value via the textbox the groupbox snaps back to its proper height. Is there something that I am missing? When the datagrid renders it looks like all the text in the textcolumns render vertically and then snap into place. <StackPanel x:Name="LeftDock" Margin="0" VerticalAlignment="Top" MinHeight="480" Width="650" > <GroupBox x:Name="g_grpBx" Margin="8,8,0,0" Padding="0,10,0,0" MaxWidth="635" MinWidth="612" VerticalAlignment="Top"> <StackPanel x:Name="g_dp" VerticalAlignment="Top"> <local:TextboxControl x:Name="m_txbx" Margin="0" VerticalAlignment="Top" MinWidth="592"/> <local:GoalDataGrid x:Name="goalDataGrid" Height="Auto" MinHeight="25" MinWidth="592" Margin="0" Padding="0" VerticalAlignment="Top"/> </StackPanel> </GroupBox> </StackPanel>

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  • Cross Thread Exception in PropertyChangedEvent in WPF

    - by Ashish Ashu
    I have a ListView that is binded to my custom collection. At run time , I am updating the certain properties of my entity in my custom collection in my ViewModel. At the same time , I am also doing the custom sorting in the listview. The custom sorting is applicable when I click on the any column header of the listview. For example, I am updating the current datetime on my entity on every 5 seconds and simulaneously , I am applying custom sorting based on DateTime. (The Listview is third party control). Hence I am doing two operations on my custom collection at the same time. Should I pass the dispatcher of my control in the view model and call any methods ( which updates any entity in my custom collection ) through UI dispatcher ?

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  • WPF WebBrowser: How to set element click event?

    - by Ralph
    I've figured out how to make everything red as soon as the page is finished loading: private void webBrowser1_LoadCompleted(object sender, NavigationEventArgs e) { var doc = (IHTMLDocument2)webBrowser1.Document; foreach (IHTMLElement elem in doc.all) { elem.style.backgroundColor = "#ff0000"; } } Now what if I want to make the element only change color when it's clicked? I see that elem has an onclick property, but it's type is dynamic so I don't know what to do with it. The documentation is pretty useless.

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  • Double Loaded event in WPF

    - by Simon
    I had some difficulties with bindng data to custom controll's value made by someone else so i used "Loaded" event to assign control's value during, but i've noticed that this event is fired up twice. How can i find out what's firing that event? (VS2008) Or mayby any solution would be expected :)

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  • WPF, Image MouseDown Event

    - by PrimeTSS
    I have an control with a mouse down event where Id like to chnage the Image when the image is clicked. But I cant seem to alter ANY of the images properties in the event. Event private void Image_MouseDown(object sender, MouseButtonEventArgs e) { BitmapImage bitImg = new BitmapImage(); bitImg.BeginInit(); bitImg.UriSource = new Uri("./Resource/Images/Bar1.png", UriKind.Relative); bitImg.EndInit(); ((Image)sender).Source = null; ((Image)sender).Width = 100; ((Image)sender).Visibility = Visibility.Hidden; } The event does fire, and even the .Visibility property does not alter the image and make it hidden. What am I doing wrong?

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  • WPF datagrid bind to previous row's cell

    - by James Price
    Hi, I have a datagrid and one of the columns is going to be a checkbox column. To give the background, the checkbox is going to turn something on / off and each row in the datagrid is going to be for a differernt time (in time order, ascending). Is it possible for one row's checkbox to be bound to the state of the previous row? That way if somebody turns off at 10am it will continue to be turned off until such a time that it is turned on again. Hope that makes sense, any help would be great. Sure this sounds like something that should be do-able with databindings just not sure on the way to do it! Thanks.

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