wpf

Lazy/deferred loading of a CollectionViewSource?

When you create a CollectionViewSource in the Resources section, is the set Source loaded when the resources are initalized (i.e. when the Resources holder is inited) or when data is bound? Is there a xamly way to make a CollectionViewSource lazy-load? deferred-load? explicit-load? ...

Can a DataTemplate be a Page?

I'm using the MVVM pattern to create a WPF standalone application. My program compiles in Visual Studio 2008, but I frequently get warnings in the editor for my DataTemplates. In my MainWindow.xaml, I've defined the following DataTemplate: <DataTemplate DataType="{x:Type ViewModels:TagViewModel}"> <Views:TagView /> </Da...

NHibernate Performance Optimization | Suggestions invited!!!

Hi, I’m facing an issue with NHibernate performance and can you please suggest me some optimizations? Below mentioned is a small summary of my application architecture I have a windows service which is listening to a messaging bus. On receiving a message the service creates an object out of which a property is the received xml snippet ...

How do I do client-side validation in WPF using WCF RIA Services

Hi! I've created a WCF RIA Service that I'd like to use with a WPF application. I've added several System.ComponentModel.DataAnnotations validation rules on the entities meta-data, all which work great on the server when I call .SubmitChanges(changeSet) from the client. I'd also like to validate my entities on the client side before I...

Why can't I find DataTemplates in merged resource dictionaries?

In my MainWindow.xaml, I have the following reference to a ResourceDictionary: <Window.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="MainSkin.xaml" /> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Window.Resources> In MainSkin....

DataGridComboBoxColumn was not found

The System.Windows.Controls.Data.DataGrid is used in my Silverlight application, but on attempt to add 'DataGridComboBoxColumn' column to the grid the following error messages are obtained: Error 1 The tag 'DataGridComboBoxColumn' does not exist in XML namespace 'clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls....

Set Window Properties based on Datatype of UserControl

I've got a simple window, that is container for various views. I've got a DataTemplate that shows the correct view based on whatever the window's MainViewModel property is set to. <DataTemplate DataType="{x:Type VM:StartupViewModel}"> <AdornerDecorator> <V:StartupView /> </AdornerDecorator> </DataTemplate> What I'd li...

Get rid of XAML Window from Taskbar

If I have a XAML window that I show with ShowDialog, is there a way to make it (not) appear in the taskbar? The problem is that I can set the window to be topmost but if that window opens another dialog and I set that also to be topmost, I can put the second behind the first by clicking in the taskbar. This tends to confuse users. ...

.NET Based Radio Automation

I'm curious if anyone has seen an Open Source radio automation package (I found one in Russian on CodePlex) built on .NET In addition if I wanted to build something like this in a client server environment is WCF and WPF the best way to do it? Is it fast enough to trigger songs to play/encode on the server from a remote WPF client? So...

How to localize ASP.Net Memebership provider in WPF application

Hello, We are using ASP.Net Membership provider for user management module in our WPF based application. It seems to be working fine. But now we want to localize our WPF application, and don't know how to do that with respect to the data stored as part of Membership Provider. Is Localization supported by Membership Provider ? Is so, any...

How to save an image in it's original format?

How can I save an Image with it's original encoding? It seems that the only way to save an Image is by using a BitmapEncoder but I don't know how I can get the correct format from the image. Example: Clipboard.GetImage() returns a InteropBitmap which doesn't seem to contain any information about the original format. I also tried usin...

Double Loaded event in WPF

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 :) ...

Binding DataGridComboBoxColumn to a one to many entity framework relation

I have two tables in the model, one table contains entries related to the other table in a one to many relations, for example: Table User ID Name Table Comments ID UserID Title Text I want to show a datagrid in a WPF window with two columns, one text column with the User name and another column with a combobox showing all...

Overlay WPF controls

Hello I've written an 'auto-suggest' textbox user control in WPF. It behaves a little bit like the 'To' list in Hotmail, allowing the user to enter a list of items, offering suggestions when it is able. The main controls are a a text box, a wrap panel and a list box. The text box captures user input. The wrap panel contains the te...

Windows 7 like form style in c#(WPF)

hai am develping a application in c#(WPF). when i run the application in windows xp, i want to show windows like how we look in windows 7 or in vista.. am using WPF with c#. is it possible. how can i do ...

Trouble binding command to button in WPF

I've got a button in a ribbon I've implemented and having trouble binding to a command. The ribbon is in a UserControl named AppRibbon. The AppRibon control has a public property called SelectedModule which has a property named RenameModuleCmd. When I create an event handler for the button, i call the command explicitly to make sure ever...

WPF: How can I KEEP the same ItemTemplate instance once its created ??

Hello, Here is a cinario: I have a ListView, with ItemsSource = ProjectModel.Instance.PagesModelsCollection; where PagesModelsCollection is an ObservableCollection In the ListView XAML part: <ListView.ItemTemplate> <DataTemplate x:Name="PagesViewDataTemplate"> <DataTemplate.Resources> ...

How to draw a line of plusses og triangles along a path in WPF?

I need to draw a line with plusses or crosses along an given path (arch) but can't seem to find anything pointing me in the right direction. Any help would me much appreciated. Best, Jon H Edit: Hmmm. I still cant find any good answer to my question. I have googled for "everything"...I have fooled around with DrawingBrush'es with var...

WPF application template not available in Visual Studio 2010

I have just installed Visual Studio 2010. when I attempt to create a new project in c#, there is no option for a WPF application. There is for Visual Basic. The WPFApplicaton.zip flie does exist in C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\ProjectTemplates\CSharp\Windows\1033 What could be wrong here? ...

WPF menu like control showing when clicking a control ;) How?

I have an application that connects to a server. In the status bar I show the connection status, and on a click I want to open a "menu like" subcontrol over the status showing control where more detailed connection information is shown (like: user name, server name, ping delay, disconnect / reconnect button). This should basically look ...