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WPF is LOB ready today and this space will only get way better in the future.
modified 27-Feb-21 21:01pm.
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For sure ... i'm working on two LOB WPF apps at the moment.
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Hi,
I am working with designing custom controls for WPF applications. My problem is I couldn't find a way to force a control property appear in the XAML window by default. It appears only when its changed by the user. for example a button has a propert called myProp which I initializes in the constructor, but It doesn't gets reflected in the XAML file of the window. pls tell me how to force a property to appear in the .xaml file, by default whenever a control is placed on the WPF window.
thanks in advance,
vinod
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Simple answer, you can't. Sorry about that.
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thn how microsoft manages to embed some control property into the xaml by default. Like the name proprty of a control derived from Usercontrol.
or can tell me if there is any work around
modified on Tuesday, October 14, 2008 2:50 AM
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plz can any body give me the code which transfer to another page
like (server.Transfer()) or (response.redirect())
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You can use System.Windows.Browser.HtmlPage.Window.Navigate( Uri ) for similar purpose in Silverlight.
Regards,
Syed Mehroz Alam
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thank u very much
it worked with me
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How to assign stream as source to WPF mediaelement control. In Silverlight I can do it using mediaelement.SetSource. I am not able to find out how to do it in WPF application.
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Posting in this[^] forum would be more appropriate.
Syed Mehroz Alam.
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Are you creating your own language service?
If not can you provide a few more details.
modified 27-Feb-21 21:01pm.
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Hi Karl,
Yes, I want to create my own language service with Syntax Highlighting and Intellisense. I want to create a usercontrol something like text box. Is this possible?
Thanks,
Charith Jayasundara
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Charith,
I'm sorry but writing a Language Service is something I have no knowledge about.
Can I suggest posting your question on the MSDN Visual Studio forum. This will give your question the attention it needs.
If you don't get a reply there in a few days, reply to this message and I'll get you the help. If you need to reply, plesae give me the link to your question on the form.
modified 27-Feb-21 21:01pm.
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I'm new to WPF. I'm trying to create an application that displays 3 images stacked on top of one another. The images shall be zoomable and rotateable just like in 3D. I wonder how to achieve this.
What I have done is I have created 3 mesh surfaces stacked on top of one another in 3D using Viewport3D and GeometryModel3D. It's based on a sample program I got from the internet. I haven't figured out how to paint images on the 3 surfaces.
For zooming and rotating, this code uses Transform3DGroup. It's working like a charm.
My final product will have to also have 3D markers scattered on the 3 images and when the user clicks on a marker, some tips shall be displayed. I'm not so concerned about this feature yet as it's a good to have, not must have. I need to get the foundation right first before adding this fancy feature.
Before I continue down this path, I wonder if I'm on the right track.
Any suggestions would be appreciated.
Here's my code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Media.Media3D;
namespace Wpf3DTest {
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window {
private GeometryModel3D mGeometry;
private bool mDown;
private Point mLastPos;
public MainWindow() {
InitializeComponent();
BuildSolid();
}
private void BuildSolid() {
// Define 3D mesh object
MeshGeometry3D mesh = new MeshGeometry3D();
mesh.Positions.Add(new Point3D(-1, -1, 1));
mesh.Positions.Add(new Point3D(1, -1, 1));
mesh.Positions.Add(new Point3D(-1, -1, -1));
mesh.Positions.Add(new Point3D(1, -1, -1));
mesh.Positions.Add(new Point3D(-1, 0, 1));
mesh.Positions.Add(new Point3D(1, 0, 1));
mesh.Positions.Add(new Point3D(-1, 0, -1));
mesh.Positions.Add(new Point3D(1, 0, -1));
mesh.Positions.Add(new Point3D(-1, 1, 1));
mesh.Positions.Add(new Point3D(1, 1, 1));
mesh.Positions.Add(new Point3D(-1, 1, -1));
mesh.Positions.Add(new Point3D(1, 1, -1));
//mesh.Positions.Add(new Point3D(-0.5, -0.5, 1));
//mesh.Normals.Add(new Vector3D(0, 0, 1));
//mesh.Positions.Add(new Point3D(0.5, -0.5, 1));
//mesh.Normals.Add(new Vector3D(0, 0, 1));
//mesh.Positions.Add(new Point3D(0.5, 0.5, 1));
//mesh.Normals.Add(new Vector3D(0, 0, 1));
//mesh.Positions.Add(new Point3D(-0.5, 0.5, 1));
//mesh.Normals.Add(new Vector3D(0, 0, 1));
//mesh.Positions.Add(new Point3D(-1, -1, -1));
//mesh.Normals.Add(new Vector3D(0, 0, -1));
//mesh.Positions.Add(new Point3D(1, -1, -1));
//mesh.Normals.Add(new Vector3D(0, 0, -1));
//mesh.Positions.Add(new Point3D(1, 1, -1));
//mesh.Normals.Add(new Vector3D(0, 0, -1));
//mesh.Positions.Add(new Point3D(-1, 1, -1));
//mesh.Normals.Add(new Vector3D(0, 0, -1));
//my code for the bottom face
mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(1);
mesh.TriangleIndices.Add(3);
mesh.TriangleIndices.Add(3);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(4);
mesh.TriangleIndices.Add(5);
mesh.TriangleIndices.Add(7);
mesh.TriangleIndices.Add(7);
mesh.TriangleIndices.Add(6);
mesh.TriangleIndices.Add(4);
mesh.TriangleIndices.Add(8);
mesh.TriangleIndices.Add(9);
mesh.TriangleIndices.Add(11);
mesh.TriangleIndices.Add(11);
mesh.TriangleIndices.Add(10);
mesh.TriangleIndices.Add(8);
/*
// Front face
mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(1);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(3);
mesh.TriangleIndices.Add(0);
// Back face
mesh.TriangleIndices.Add(6);
mesh.TriangleIndices.Add(5);
mesh.TriangleIndices.Add(4);
mesh.TriangleIndices.Add(4);
mesh.TriangleIndices.Add(7);
mesh.TriangleIndices.Add(6);
// Right face
mesh.TriangleIndices.Add(1);
mesh.TriangleIndices.Add(5);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(5);
mesh.TriangleIndices.Add(6);
mesh.TriangleIndices.Add(2);
// Top face
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(6);
mesh.TriangleIndices.Add(3);
mesh.TriangleIndices.Add(3);
mesh.TriangleIndices.Add(6);
mesh.TriangleIndices.Add(7);
// Bottom face
mesh.TriangleIndices.Add(5);
mesh.TriangleIndices.Add(1);
mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(4);
mesh.TriangleIndices.Add(5);
// Right face
mesh.TriangleIndices.Add(4);
mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(3);
mesh.TriangleIndices.Add(3);
mesh.TriangleIndices.Add(7);
mesh.TriangleIndices.Add(4);
*/
// Geometry creation
mGeometry = new GeometryModel3D(mesh, new DiffuseMaterial(Brushes.YellowGreen));
mGeometry.Transform = new Transform3DGroup();
group.Children.Add(mGeometry);
}
private void Grid_MouseWheel(object sender, MouseWheelEventArgs e) {
camera.Position = new Point3D(camera.Position.X, camera.Position.Y, camera.Position.Z - e.Delta / 250D);
}
private void Button_Click(object sender, RoutedEventArgs e) {
camera.Position = new Point3D(camera.Position.X, camera.Position.Y, 5);
mGeometry.Transform = new Transform3DGroup();
}
private void Grid_MouseMove(object sender, MouseEventArgs e) {
if(mDown) {
Point pos = Mouse.GetPosition(viewport);
Point actualPos = new Point(pos.X - viewport.ActualWidth / 2, viewport.ActualHeight / 2 - pos.Y);
double dx = actualPos.X - mLastPos.X, dy = actualPos.Y - mLastPos.Y;
double mouseAngle = 0;
if(dx != 0 && dy != 0) {
mouseAngle = Math.Asin(Math.Abs(dy) / Math.Sqrt(Math.Pow(dx, 2) + Math.Pow(dy, 2)));
if(dx < 0 && dy > 0) mouseAngle += Math.PI / 2;
else if(dx < 0 && dy < 0) mouseAngle += Math.PI;
else if(dx > 0 && dy < 0) mouseAngle += Math.PI * 1.5;
}
else if(dx == 0 && dy != 0) mouseAngle = Math.Sign(dy) > 0 ? Math.PI / 2 : Math.PI * 1.5;
else if(dx != 0 && dy == 0) mouseAngle = Math.Sign(dx) > 0 ? 0 : Math.PI;
double axisAngle = mouseAngle + Math.PI / 2;
Vector3D axis = new Vector3D(Math.Cos(axisAngle) * 4, Math.Sin(axisAngle) * 4, 0);
double rotation = 0.01 * Math.Sqrt(Math.Pow(dx, 2) + Math.Pow(dy, 2));
Transform3DGroup group = mGeometry.Transform as Transform3DGroup;
QuaternionRotation3D r = new QuaternionRotation3D(new Quaternion(axis, rotation * 180 / Math.PI));
group.Children.Add(new RotateTransform3D(r));
mLastPos = actualPos;
}
}
private void Grid_MouseDown(object sender, MouseButtonEventArgs e) {
if(e.LeftButton != MouseButtonState.Pressed) return;
mDown = true;
Point pos = Mouse.GetPosition(viewport);
mLastPos = new Point(pos.X - viewport.ActualWidth / 2, viewport.ActualHeight / 2 - pos.Y);
}
private void Grid_MouseUp(object sender, MouseButtonEventArgs e) {
mDown = false;
}
}
}
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Hi all!
I've found lots of examples describing databinding, but still I haven't got a clue how to solve my problem. The frustrating thing is I think it is easy. But still, I'm lost...
In a WPF application, I invoke a WCF service call (contactClient.GetContacts()), which returns an array of Friend objects.
Window.xaml.cs:
private void PopulateContactsListBox()
{
listBoxContacts.Items.Clear();
listBoxContacts.ItemsSource = contactClient.GetContacts();
}
My intention is to let a listbox display the result returned from the WCF service call. And it does, but it doesn't display the actual data. Instead it displays the ToString() representation. In other words, the listbox displays the type returned by the service call; like "DataLayer.Friend".
So, how do I display the actual data from the service call in my listbox?
Thank you!
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I'm not sure if this is the same in WPF, but in ASP.NET the databound controls have properties for you to set which property or field of the returned data items are used for 1) displaying text and 2) the actual value of the item. Perhaps WPF has something similar?
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You need to set the items that you want to display. Typically it would look something like this:
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=Title}" />
<TextBlock Text="{Binding Path=Surname}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
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Yeah, as Pete indicated you need a datatemplate as the listbox doesn't know how to display a Friend object so it just calls the ToString method.
You can move the datatemplate into a resource section. Such as Window.Resources or even Application.Resources. Another neat thing is if you set the DataType on the DataTemplate to your Friend object, it will be used automatically display it. Along the lines of this:
<datatemplate datatype="{x:Type local:Friend}">
....
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Thank you guys! It worked with the datatemplate stuff.
Have a nice day 
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You're welcome, and you have a nice day too. 
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