I am working on an application that allows users to manipulate multiple images by using ItemsControl. I started running some tests and found that the app has problems displaying some big images - ie. it did not work with the high resolution (21600x10800), 20MB images from
http://earthobservatory.nasa.gov/Features/BlueMarble/BlueMarble_mo...
Is there any cost/drawback (apart from typing too much) to adorning a class with System.Runtime.Serialization attributes (like [DataContract]) such that it can be used locally as a direct reference to a desktop Client project or as a type for a WCF service? The goal here is to write a data-tier class that can be used in both rich client ...
If I were to say "the heck with it!", I could just give my ListView with SelectionMode="Multiple" a name, and be able to get all of the selected items very easily. But I'm trying to stick to MVVM as much as possible, and I want to somehow databind to an ObservableCollection that holds the value from the Name column for each selected ite...
I am trying to apply an image brush to a Triangle in WPF without success. What am i doing wrong?
This is my attempt:
Dim ModelTri As New MeshGeometry3D
ModelTri.Positions.Add(New Point3D(0, 0, 0))
ModelTri.Positions.Add(New Point3D(100, 0, 0))
ModelTri.Positions.Add(New Point3D(100, 100, 0))
Dim MeshTri As New Mesh...
I have three ObservableCollections: CharacterCollection, LocationCollection, and ItemCollection. They are all collections of objects; CharacterCollection is a collection of Character Objects. I need to display, in the listview, information from the collection determined by the user clicking on a button.
I would prefer to use databinding...
Hi there.
I am at a loss here after searching around with no results.
I am attempting to channel the audio specifically from an .mp4 for use in a driver.
I am aware that there are programs which extract the audio from .mp4's, but I am looking for another approach without using external applications such as those.. is there any directi...
Hi,
I am trying to get the characters read from the keyboard into some variable for further manipulation. I have the following list that I wish to recognize if entered by a user.
List of keyboard entries:
letters
[
]
~
^
numbers
Part of the code:
void HookManager_KeyUp(object sender, KeyEventArgs e)
{
string test = e.KeyC...
Hello,
I have C++ project that compiles as DLL Assembly in .NET 3.5 SP1
Project is used for Image rendering processing by using WPF (it loads 2 images from local folder, applies one image on another and saves the output file in the same folder).
I want to use that that project as a reference in ASP.NET project to the rendering on the web...
It's possible to implement INotifyCollectionChanged or other interface like IObservable to enable to bind filtered data from xml file on this file changed ? I see examples with properties or collection, but what with files changes ?
I have that code to filter and bind xml data to list box:
XmlDocument channelsDoc = new XmlDocument();
c...
I'm working on an app which supports live editing. That is you update properties in one area and their impact is seen in another with hitting "apply". Happens to be a charting app. One such edit "group" allows specifying a range. A triple range in fact: High, Target and Low.
Our validation is such that High must be greater than targ...
I am trying to draw a fireworks affect in WPF XAML and was wondering what would be the best way to approach this?
...
Hai am using telerik wpf grid
in grid selection change event am getting the selected row values.
the problem is the values are as object.
object myData = radGridView.SelectedItem;
the object myData contains the row values. but i don know how to get values from the myData object
...
Im writing a WPF application that wants to get access to a digital camera, and have been madly Googling around for solutions and Im pretty happy with how its all going.
This is what I have at the moment:
private const decimal WM_DEVICECHANGE = 0x0219;
private const int DBT_DEVTYP_HANDLE = 6;
private const int DBT_DEVNODES_C...
I'm trying to figure out what exactly Dependency Properties are, but when I look anywhere for a definition, I only find "how to use" but not "what it is".
Imagine you are asked on a job interview - what is a dependency property. What would be your answer?
...
I'm developing a WPF app using MVVM. Most of my views have only xaml markup and nothing (except default boilerplate) on code behind.
All except one view that I use adorners to "blacken" the screen when I want to make the whole screen disabled.
private void Window_Loaded(object sender, RoutedEventArgs e)
{
//todo: transf...
I have a control that has its data bound to a standard ObservableCollection, and I have a background task that calls a service to get more data.
I want to, then, update my backing data behind my control, while displaying a "please wait" dialog, but when I add the new items to the collection, the UI thread locks up while it re-binds and ...
Hi.
We need to create a "timeline" feature where a user is allowed to drag and draw "time spans" into a WPF grid (we thought this better than a Canvas since it has resizing capabilities). Each span spans multiple columns, but only one row.
We utilize the PreviewMouseDown/Up/Move events to see when the user clicks, drags, and releases th...
Hello
I have a problem in my code and I am not able to fix it at all.
private static void SetupImages(object o)
{
int i = (int)o;
BitmapImage bi = GetBitmapObject(i);
img = new System.Windows.Controls.Image();//declared as static outside
img.Source = bi;//crash here
img.Stretch = Stretch.Uni...
In my application I have keys that bound to commands using the KeyBinding class. The command is executed when the key is pressed and released.
I have a special case where I want to bind separate commands to the pressed action and to the released action. For example when the space key is pressed I want my app to run a command to enter ...
How this make in XAML without ListView and TreeListView
...