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  • Creating transparent background in WPF

    - by Vinjamuri
    I have a button with a backgroun image of color white. My button is sitting on the toolbar which has a bacground color of Blue. When the button is sitting on the toolbar, the button looks white, however I want it to look like blue as the the background color of toolbar is Blue. How should I achieve this in WPF.. Please let me know.

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  • Extending a DropDownList control

    - by Andrew Robinson
    I have a rather large application that has literally a hundred DDLs with Yes / No ListItems. In an attempt to same myself some time, I created a Custom Control that extends the standard DDL. It all seems to work fine but I am having some issues when assigning the SelectedValue property in code where the selected value does not seem to have an affect on the control. I wonder if I should be adding my items during Init or PagePreLoad? Should I be calling base.OnInit before or after I add the list items? This mostly works but not 100%. (v3.5) public class YesNoDropDownList : DropDownList { protected override void OnLoad(EventArgs e) { base.OnLoad(e); if (!Page.IsPostBack) { base.Items.Add(new ListItem("Yes", "YES")); base.Items.Add(new ListItem("No", "NO")); } } }

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  • How to pass EventArgument information from view to view model in WPF?

    - by Ashish Ashu
    I have ListView control in my application which is binded to the collection of CustomObject List<CustomObject. The CustomObject has seperate view. This ListView has seperate view model. The collection List _customobject is containted in the ListView ViewModel class. My Query: I want to invoke a view that show properties of custom object, when user double click on any row of ListView. The ListView double click command is binded to the ListViewDoublClick Command in the view model. The CustomObject is in the event argument of listview double click command. To acheive this I have to pass the custom object ( or an unique id property of custom object through which I can retrieve the custom object from the collection) as command parameter. Please suggest me the solution!!

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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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  • 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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  • Implement a HierarchicalDataBoundControl for ASP.NET

    - by Breadtruck
    I want to implement a Hierarchical data bound control for ASP.NET. I used Implementing IHierarchy Support Into Your Custom Collection as a basis to create my hierarchical collection. I also created a HierarchicalDataSourceControl for the collection. Everything works: I can bind it to an ASP.NET TreeView and it renders the data correctly. However, I'm stuck on the HierarchicalDataBoundControl. I found examples, but I am still too new at c# / .Net to understand them. I don't quite understand how to implement the examples: Rendering a databound UL menu nor HierarchicalDataBoundControl Class Does anyone have any tips, or better examples of implementing a control like this?

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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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  • asp:RadioButtonList doesn't set correct selected item on load

    - by Nir
    I have this code: <asp:RadioButtonList ID="rblExpDate" runat="server" > <asp:ListItem Selected="True" Text="No expiration date"></asp:ListItem> <asp:ListItem Text="Expires on:"></asp:ListItem> </asp:RadioButtonList> that I would like to be always, on page load, to mark the first option ("no expiration date"). However, if the user marks the second option and reloads, the second option is selected, even though I do this on page load: rblExpDate.Items[0].Selected = true; rblExpDate.SelectedIndex = 0; Appreciate your help!

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  • How to set the location of a WPF window?

    - by Ashish Ashu
    I have a List View in which I have defined a custom cell as a user control. In the custom cell I given user hyperlink, I am showing a WPF dialog when user clicks on a hyperlink. I want WPF dialog comes just above the hyperlink.. Please let me know how can I acheive this or how to set the location of the dialog so that it just comes above the hyperlink.

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  • WPF TextBlock binding with <LineBreak/>

    - by Vinjamuri
    I have a TextBlock binding as follows in my ControlTemplate. When I set ButtonText as follows with , it doesn't work. It doesn't display in separate line. ButtonText="Change Casette" How to fix this? Appreciate your help, please provide me with sample code.

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  • Handle tab key in ToolStripComboBox

    - by Jiri
    Hi, I have a ToolStripComboBox in a ToolStrip, and when I press TAB key in it, it gives focus to the next toolstrip button. I would like to change this behavior and give focus to a richtextbox on my form instead. The problem is that ToolStripComboBox does not have PreviewKeyDown event. And PreviewKeyDown of the hosting ToolStrip Toolbar is not called when tab key is pressed in the combo (just when pressed and some toolstripbutton is focused). TabStop of the toolstrip toolbar is false. Any ideas?

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  • custom button MouseLeave event

    - by Jelle
    Hi, I made a custom button with some panels and pictureboxes. With the MouseEnter and MouseLeave I set the appropriate hover images like normal buttons. The problem is that if I move the mouse too fast over the control it sometimes doesn't trigger the MouseLeave event. This way the button is "locked" in hover state. screenshot problem: http://www.jesconsultancy.nl/images/screens/screen_prblm.png the button at the right is locked in "hover" state. How can i solve this? Thanks.

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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 DataGrid issue with db40

    - by Rich Blumer
    I am using the following code to populate a wpf datagrid with items in my db4o OODB: IObjectContainer db = Db4oEmbedded.OpenFile(Db4oEmbedded.NewConfiguration(), "C:\Dev\ContractKeeper\Database\ContractKeeper.yap"); var contractTypes = db.Query(typeof(ContractType)); this.dataGrid1.ItemsSource = contractTypes.ToList(); Here is the XAML: <Window x:Class="ContractKeeper.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:dg="http://schemas.microsoft.com/wpf/2008/toolkit" Title="Window1" Height="300" Width="300"> <Grid> <dg:DataGrid AutoGenerateColumns="True" Margin="12,102,12,24" Name="dataGrid1" /> </Grid> </Window> When the items get bound to the datagrid, the gridlines appear like there are records but no data is displayed. Has anyone had this issue with db4o and the wpf datagrid?

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  • How to set an event for all cells in WPF Datagrid

    - by Natxo
    I need OnDragEnter event for every cell on my WPF Datagrid. I tried this : <ControlTemplate TargetType="{x:Type my:DataGridCell}" x:Key="RowTemplate"> <ContentPresenter DragEnter="ContentPresenter_DragEnter" > </ContentPresenter> </ControlTemplate> But doesn't seem to work. Any ideas people?

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  • LineChart in WPF

    - by Maurizio Reginelli
    I havo to implement a custom control in WPF which contains a line chart. This control should permit to an user to define, with a control template, the number of grids, the font family and the font size of axis labels and other parameters. I'm wondering if one of you can address me to an example or give me some advice. Thank you in advance.

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  • Blackberry custom OVERLAY horizontal menu

    - by Dachmt
    Thanks to Max in this post, I made an horizontal menu. But now I'm trying to make an overlay menu, i I don't find how to do that... Let's see what i got first. So, I have a class MapScreen which display my map: public class MapScreen extends MenuScreen Then, I have in the same file the MenuScreen class like this that allows to display the horizontal menu when I press the MENU key: abstract class MenuScreen extends MainScreen { boolean mMenuEnabled = false; CyclicHFManager mMenuManager = null; public MenuScreen() { mMenuManager = new CyclicHFManager(); mMenuManager.setBorder(BorderFactory.createBevelBorder(new XYEdges(4, 0, 0, 0), new XYEdges(Color.DARKBLUE, 0, 0, 0), new XYEdges( Color.WHITE, 0, 0, 0))); mMenuManager.setBackground(BackgroundFactory .createLinearGradientBackground(Color.DARKBLUE, Color.DARKBLUE, Color.LIGHTBLUE, Color.LIGHTBLUE)); for (int i = 0; i < 10; i++) { Bitmap nBitmap = new Bitmap(60, 60); Graphics g = new Graphics(nBitmap); g.setColor(Color.DARKBLUE); g.fillRect(0, 0, 60, 60); g.setColor(Color.WHITE); g.drawRect(0, 0, 60, 60); Font f = g.getFont().derive(Font.BOLD, 40); g.setFont(f); String text = String.valueOf(i); g.drawText(text, (60 - f.getAdvance(text)) >> 1, (60 - f .getHeight()) >> 1); Bitmap fBitmap = new Bitmap(60, 60); g = new Graphics(fBitmap); g.setColor(Color.DARKBLUE); g.fillRect(0, 0, 60, 60); g.setColor(Color.GOLD); g.drawRect(0, 0, 60, 60); g.setFont(f); g.drawText(text, (60 - f.getAdvance(text)) >> 1, (60 - f .getHeight()) >> 1); BitmapButtonField button = new BitmapButtonField(nBitmap, fBitmap); button.setCookie(String.valueOf(i)); button.setPadding(new XYEdges(0, 18, 0, 18)); button.setChangeListener(new FieldChangeListener() { public void fieldChanged(Field field, int context) { Dialog.inform("Button # " + (String) field.getCookie()); } }); mMenuManager.add(button); } } protected boolean keyDown(int keycode, int time) { if (Keypad.KEY_MENU == Keypad.key(keycode)) { if (mMenuManager.getManager() != null) { delete(mMenuManager); mMenuManager.mCyclicTurnedOn = false; } else { add(mMenuManager); mMenuManager.getField(2).setFocus(); mMenuManager.mCyclicTurnedOn = true; } return true; } else { return super.keyDown(keycode, time); } }} And finally my menu manager: public class CyclicHFManager extends HorizontalFieldManager { int mFocusedFieldIndex = 0; public boolean mCyclicTurnedOn = false; public void focusChangeNotify(int arg0) { super.focusChangeNotify(arg0); if (mCyclicTurnedOn) { int focusedFieldIndexNew = getFieldWithFocusIndex(); if (focusedFieldIndexNew != mFocusedFieldIndex) { if (focusedFieldIndexNew - mFocusedFieldIndex > 0) switchField(0, getFieldCount() - 1); else switchField(getFieldCount() - 1, 0); } } else { mFocusedFieldIndex = getFieldWithFocusIndex(); } } private void switchField(int prevIndex, int newIndex) { Field field = getField(prevIndex); delete(field); insert(field, newIndex); }} So as it is like this, it is working: when I press the MENU key, the menu appears, i can navigate between buttons, and it disappear when I press again the same key. The only problem is my menu isn't overlaying my map, it pushes the content up. I tried with the menu manager like in your first response, resizing the content manager but it is the same result. Max gave me the link http://stackoverflow.com/questions/1497073/blackberry-fields-layout-animation to do so, but I really don't know how to use it to make it work in my project... Thank you for your help! UPDATE This works great, it's what I wanted. However, I still have a problem because I'm under 4.5. So first in the MenuHostManager constructor, I deleted the USE_ALL_HEIGHT and change setPositionChild(mMenuManager, 0, Display.getHeight() - mMenuManager.getPreferredHeight()); like this to have the menu at the bottom of the screen. It worked. Then, instead of drawing my bitmaps, I did this: Bitmap nBitmap = EncodedImage.getEncodedImageResource("menu" + i + ".png").getBitmap(); BitmapButtonField button = new BitmapButtonField(nBitmap, nBitmap); And it worked too (no rollover for now, later). So it is great! I also overwrite the Paint method of my CyclicHFManager to have a background color, because I can't use the BorderFactory and BackgroundFactory... My menu bar has a color for now so it's ok. Then, because of these 2 classes missing, in my BitmapButtonField I had to delete the 2 setBorder functions that change the borders. And now i have my buttons pretty big like normal buttons with borders... How can I make the same effect as the setBorder functions under 4.5? (BTW, setBorder is not working under 4.5 too...). Thank you!

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  • Disabling Button with custom Content in Silverlight?

    - by andrej351
    Hi there, What is the easiest way to create a Silverlight Button with custom Content which knows how to 'look' disabled? I.e. if you set IsEnabled="False" it will look greyed out. The custom Content will be dead simple, text and an image. I have done this before in a WPF application quite easily by setting the Content to a StackPanel containing a TextBlock and an Image. I then implemented a Style Trigger on the Image to change it to a greyed out version when it wasn't enabled. The text changed colour by itself. As far as I can tell the custom Content disappears altogether when the button is disabled in Silverlight. Any help is appreciated. Cheers, Andrej.

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  • WPF Copy / Paste functionality

    - by Wasim
    Hi all , I want to supply copy funtionality to my WPF app. I display texts in textblocks whitch comes from the server . The user cann't copy this texts and use them. How can do it ? Please you help. Thanks...

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  • How to automatically scroll ScrollViewer - only if the user did not change scroll position

    - by Elad
    I would like to create the following behaviour in a ScrollViewer that wraps ContentControl: When the ContentControl height grows , the ScrollViewer should automatically scroll to the end. This is easy to achive by using ScrollViewer.ScrollToEnd(). However, if the user uses the scroll bar, the automatic scrolling shouldn't happen anymore. This is similar to what happens in VS output window for example. The problem is to know when a scrolling has happened because of user scrolling and when it happened because the content size changed. I tried to play with the ScrollChangedEventArgsof ScrollChangedEvent, but couldn't get it to work. Ideally, I do not want to handle all possible Mouse and keyboard events.

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