Re: taking the control - WPF Discussion Boards

1-Jun-09 6:00

To close a window you can use the Close[^] method.
e.g.,
yourWindowObject.Close();

VisualChildrenCount..

Hema Bairavan1-Jun-09 0:10

Re: VisualChildrenCount..

1-Jun-09 0:10

i am using an WPF application..

here the visual children count is comming as 0..

even i am having number of childrens there. how to get the visual childer?

Pete O'Hanlon1-Jun-09 1:28

1-Jun-09 1:28

If you're getting 0 as a visual children count, this means you're probably looking in the wrong place. Try to get the count AFTER youc call InitializeComponent in your window.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Re: VisualChildrenCount..

Hema Bairavan1-Jun-09 1:33

Re: VisualChildrenCount..

1-Jun-09 1:33

yes mr hanlon..

i m calling this method at the end of my constructor, in which the first step of my constructor is that initialize component

Pete O'Hanlon1-Jun-09 1:46

1-Jun-09 1:46

You are doing it too soon. As a test, add a button to your form, add a click event handler and add the call to TraverseVisualTree to the click handler.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

taking the control

Hema Bairavan31-May-09 22:29

31-May-09 22:29

i m using one wpf window.. in that i have some number of canvas,..

i have to do some functions dynamically for all the canvas..

for that i have to take all the canvas together in loop..
for that in windows we will use like

foreach(Canvas cv in this.controls)
cv.visiblity = hidden..

like this we wil do..

but in WPF

i m unable to take the this.controls..

how to take that one???

ABitSmart31-May-09 22:46

31-May-09 22:46

If you have the name of the Canvas elements then you can do a FindName[^] using the the window object
else you would have to use VisualTreeHelper[^] [^]

Pete O'Hanlon31-May-09 22:47

31-May-09 22:47

The controls are laid out using a Visual Tree, so you walk the tree to find children. To do this, you use the VisualTreeHelper class to get the children. Something like this will do it:

internal static void TraverseVisualTree(object current)
{
  DependencyObject ob = current as DependencyObject;
 
  int counter = VisualTreeHelper.GetChildrenCount(ob);
  for (int i = 0; i < counter; i++)
  {
   object depObj = VisualTreeHelper.GetChild(ob, i);
   // Do something here...
   TraverseVisualTree(depObj);
  }
 }
}

All you do then is call:

TraverseVisualTree(this);

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Hema Bairavan31-May-09 22:58

31-May-09 22:58

yes mr, hanlon..

but u have given the object current as paramater...

that is it expects an object as parameter..
what is that object ?? what i have to send there

Pete O'Hanlon31-May-09 23:04

31-May-09 23:04

I already answered that, when I told you how to call it. You can use the this parameter in your Window/UserControl class.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Hema Bairavan31-May-09 23:14

31-May-09 23:14

sorry..
i as it was seperated i dont read that one

Hema Bairavan31-May-09 23:27

Plz help in couple of think in ListView

31-May-09 23:27

Mr hanlon..

DependencyObject ob = current as DependencyObject;

int counter = VisualTreeHelper.GetChildrenCount(ob);

in this i m getting the counter as 0.. but i have more number childrens in the window

wasimsharp31-May-09 19:13

wasimsharp

31-May-09 19:13

Hi i create my own Grid using ListView Control in WPF
There are couple of think in which i am facing problem.

1. In Column i use a Toggle button which is used to select the listViewItem. but when i press the Toggle button click event occur at that time how i can get the object of listViewItem. Note i use the GetFocus event for the ListViewItem but it fire at first time when i click the button. i just want that when button isChecked the the listViewItem Opacity should 1.0 and if not Checked then it should 0.4.

2. When i select any listView item the selection colour is Blue how can i chage that color.

WANTED wasim khan(Killed 50 Innocent Buggs, Distroyed 200 Exception, make 5 Project Hostage) any Compnay Hire him will pay 30,000. Best place where u can get him is Sorcim Technologies Murre Road RWP

Re: Plz help in couple of think in ListView

ABitSmart31-May-09 20:38

how to animate the button in sequencial mode ?

31-May-09 20:38

Have you tried setting up a trigger based on the checked property of the ToggleButton ?

Changing the selection color of ListView[^]

Feras Mazen Taleb31-May-09 1:53

31-May-09 1:53

hello this is my first animation practice in WPF
so I considered it a very big achievment !!

but I want to animate the item like carasoul panel (control of Infaragistics) :

- how can I animate the buttons that contain advertisement image and when the user
hover on button the all buttons stop not only the button

- how can I make the same animation for all buttons but not in the same time

this is my Powerfull user control code :

<UserControl x:Class="AdvertisementsPanel.UserControl1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Loaded="UserControl_Loaded">
    <UserControl.Resources>
        <Style x:Key="AdvertisementItem" TargetType="{x:Type Button}">
            <Setter Property="MaxHeight" Value="75" />
            <Setter Property="MinHeight" Value="75" />
            <Setter Property="MaxWidth" Value="110" />
            <Setter Property="MinWidth" Value="110" />
            <Setter Property="Opacity" Value=".5" />
            <Style.Triggers>
                <EventTrigger RoutedEvent="Mouse.MouseEnter">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <DoubleAnimation 
									Duration="0:0:0.2" 
									Storyboard.TargetProperty="MaxHeight" 
									To="90" />
                                <DoubleAnimation 
									Duration="0:0:0.2" 
									Storyboard.TargetProperty="MaxWidth" 
									To="140" />
                                <DoubleAnimation 
									Duration="0:0:0.2" 
									Storyboard.TargetProperty="Opacity"
									To="1.0" />
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>

                <EventTrigger RoutedEvent="Mouse.MouseLeave">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <DoubleAnimation 
									Duration="0:0:1" 
									Storyboard.TargetProperty="MaxHeight" />
                                <DoubleAnimation 
									Duration="0:0:1" 
									Storyboard.TargetProperty="MaxWidth" />
                                <DoubleAnimation 
									Duration="0:0:0.2" 
									Storyboard.TargetProperty="Opacity" />
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>

                <EventTrigger RoutedEvent="Loaded" >
                    <BeginStoryboard Name="MyBeginStoryBoard" >
                        <Storyboard>
                            <DoubleAnimation 
                                Storyboard.TargetProperty="(Canvas.Top)"
                                To="250" Duration="0:0:7" RepeatBehavior="Forever"
                                />
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>

                <EventTrigger RoutedEvent="MouseMove">
                    <PauseStoryboard BeginStoryboardName="MyBeginStoryBoard" />
                </EventTrigger>

                <EventTrigger RoutedEvent="MouseLeave">
                    <ResumeStoryboard BeginStoryboardName="MyBeginStoryBoard" />
                </EventTrigger>
            </Style.Triggers>
        </Style>
    </UserControl.Resources>
    <Grid>
        <Canvas ClipToBounds="True" Name="maincanvas" >
            <Button Canvas.Left="10" Canvas.Top="10" Style="{StaticResource AdvertisementItem}" Height="110" Width="130" Name="button1" >Advertisement</Button>

        </Canvas>
    </Grid>
</UserControl>

thanks a lot

You have To Search About The Truth Of Your Life
Why Are you Here In Life ?

ABitSmart31-May-09 2:37

31-May-09 2:37

Feras Mazen Taleb wrote:
how can I make the same animation for all buttons but not in the same time

I don't understand this statement.

Take a look at this list of crazy WPF layout panels.[^].

Feras Mazen Taleb31-May-09 7:29

31-May-09 7:29

ABitSmart wrote:
Take a look at this list of crazy WPF layout panels.

thanks for that

I will try to clear my idea
I need to make a vertical list of photos that animate from up to down this is my simple idea
in the previous xaml code you will notice that I put one button that animate from up to down repeatedly

I want to put many photos but each photo has its own start and end point
and when the photo reach the down I want to push it in the first (ie return it to the top)

I hope that i cleared my idea Smile | :)

You have To Search About The Truth Of Your Life
Why Are you Here In Life ?

Feras Mazen Taleb1-Jun-09 23:59

1-Jun-09 23:59

I'm waiting my friend I just need the starting point
to know how to build this control

You have To Search About The Truth Of Your Life
Why Are you Here In Life ?

Feras Mazen Taleb2-Jun-09 2:03

2-Jun-09 2:03

this is the last thing I Achieved :
I added the animation to the buttons programmatically

this is the code behind file :

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.Animation;

namespace practiceOnAnimationClasses
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        DoubleAnimationUsingPath Animation1 = new DoubleAnimationUsingPath();

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            List<Button> buttons = new List<Button>(5);
            buttons.Add(new Button() { Width = 120d, Height = 75d, Content = "Advertisement 1" });
            buttons.Add(new Button() { Width = 120d, Height = 75d, Content = "Advertisement 2" });
            buttons.Add(new Button() { Width = 120d, Height = 75d, Content = "Advertisement 3" });
            buttons.Add(new Button() { Width = 120d, Height = 75d, Content = "Advertisement 4" });
            buttons.Add(new Button() { Width = 120d, Height = 75d, Content = "Advertisement 5" });

            // Storyboard AnimationRectanglePath = (Storyboard)this.Resources["StoryboardPath"];

            int count = 0;
            foreach (var item in buttons)
            {
                MainCanvas.Children.Add(item);
                DoubleAnimation myDoubleAnimation = new DoubleAnimation();
                myDoubleAnimation.From = 75 + (count * item.Width);
                myDoubleAnimation.To = 800;
                myDoubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(15));
                myDoubleAnimation.AutoReverse = false;
                myDoubleAnimation.RepeatBehavior = RepeatBehavior.Forever;

                // Apply the animation to the button's Width property.
                item.BeginAnimation(Canvas.LeftProperty, myDoubleAnimation);
                count++;
            }
        }
    }
}

Xaml File it only contains the mainCanvas that I will Add
Buttons to It

the movement is very creasy and wrong How Can I make the movement
like photo gallery

<Window x:Class="practiceOnAnimationClasses.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="563" Loaded="Window_Loaded">
    <Window.Resources>
        <!--<Storyboard x:Key="StoryboardPath">
            <DoubleAnimationUsingPath BeginTime="00:00:00" Duration="00:00:02" Storyboard.TargetName="button" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" Source="X">
                <DoubleAnimationUsingPath.PathGeometry>
                    <PathGeometry Figures="M-3,2 L363,2 L363,83 L-3,83 z"/>
                </DoubleAnimationUsingPath.PathGeometry>
            </DoubleAnimationUsingPath>
            <DoubleAnimationUsingPath BeginTime="00:00:00" Duration="00:00:02" Storyboard.TargetName="button" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)" Source="Y">
                <DoubleAnimationUsingPath.PathGeometry>
                    <PathGeometry Figures="M-3,2 L363,2 L363,83 L-3,83 z"/>
                </DoubleAnimationUsingPath.PathGeometry>
            </DoubleAnimationUsingPath>
        </Storyboard>-->
    </Window.Resources>
    
    <Canvas Name="MainCanvas"></Canvas>
</Window>

You have To Search About The Truth Of Your Life
Why Are you Here In Life ?

Pete O'Hanlon2-Jun-09 2:11

2-Jun-09 2:11

I would create a bool property called IsSelected, and use a datatrigger to fire the animation when IsSelected is true - then all you need do is loop round in your code setting this value when you need it.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Feras Mazen Taleb2-Jun-09 2:28

2-Jun-09 2:28

could you explain more !

I will try to explain what I understood

I will make A dependency property IsSelected in My UserControl

THis Property will e true when Any of the buttons are hovered on mouse

All animations will paused when the property is True

is this right ? ??? ?? ?

second could you see my third replay that I inserted my code
that i try to make the movement programmatically

thanks a lot MR.O'Hanlon Wink | ;)

You have To Search About The Truth Of Your Life
Why Are you Here In Life ?

Feras Mazen Taleb2-Jun-09 21:04

2-Jun-09 21:04

hello this what achieved until now

1- I decided to make the animation programmatically
because I thing even if I used blend to design the animation
I need to control it programmatically because I will set the same
animation to many controls but with deffirent start and end point

2- I will use [DoubleAnimationUsingPath] class to design the animation path

3- Now I'm trying to look for answers for these two questions
- How can I make the animation continuos
of course (Forever) But What I mean Exactly is :
when the control reaches the end point it will return to the start
- How can I pause the the animation Programmatically

thanks a lot for every one sharing me with his/her ideas

You have To Search About The Truth Of Your Life
Why Are you Here In Life ?

Feras Mazen Taleb7-Jun-09 3:54