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Hi i am having a problem in silverlight datagrid.My requirement is to add a row dynamically to the datagrid and also place a custom control in the cells of the row that is added.
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To add a row dynamically, you would typically just add an item to the collection
providing the row data. What are you using for row data?
To place a custom control in a cell, you can use a DataGridTemplateColumn.
See Defining Columns for a Silverlight DataGrid[^]
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://www.codeproject.com/script/Forums/Images/coffee.gif)
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Hi i am new to silverlight.I am having a doubt.
I added two textboxes and a button.
<textbox x:name="txtFirst" grid.column="0" grid.row="0" height="20" width="50" xmlns:x="#unknown">
<textbox x:name="txtSecond" grid.column="0" grid.row="1" height="20" width="50" xmlns:x="#unknown">
So,now when i click the button,one text box should become as the child of the other.So please help me on this issue.
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hi suresh!!!
Does it mean that u want to add text box inside Textbox???  .. Instead of that u
can use a listbox and add a text box to it... 
Samir
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No,I don't want to add a textbox inside a textbox.But i want to make it as the child to the first textbox.That means like a hierarchical structure (parent and child's).
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That doesn't make sense.
A control that is a child of a parent control generally implies the child is
embedded in the parent.
So what are you talking about?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Hi, I am trying to port a sample application that I found online here:
http://www.shinedraw.com/3d-illusion/flash-vs-silverlight-3d-image-space/#comment-2085
from Silverlight 2.0 to WPF. I am rather new to both Silverlight and WPF, and I am doubtlessly missing something rather obvious in this type of porting procedure. Here is a link to the project file as I modified it:
http://www.mediafire.com/?mzwmy3nmmyd
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WTH.
I thought I wanted to help on this so I was stupid enough to go to the mediafire link.
What a spam filled crap link.
Mark Salsbery
Microsoft MVP - Visual C++
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It wasn't my intention for someone to go to a spam website to download the file. Here is the link to the file on another spam free site
www.avtinconline.com/Silverlight/ImageSpace3Dwpf.zip
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In solution explorer, right click on the images folder in the project and choose Add...
Navigate to the images folder on your hard drive and add the 20 images to the project.
Expand the images folder in solution explorer.
For each image, right click the image, choose properties, and set its build action to "Content"
Click the top image and shift-click the bottom image (select all the images), right click the
selected images, choose properties, and set the build action to "Content"
Run it.
Mark Salsbery
Microsoft MVP - Visual C++
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Thanks! Worked like a charm!!!
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Cool
Mark Salsbery
Microsoft MVP - Visual C++
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I believe I have found an interesting quirk. I could not get the images in the
WPF application to render in the random position order as shown in the silverlight
example version. A value that in the silverlight version returns valid floating
point values, returns "NaN" in the WPF version. The calculations seem to be the
same, so how can "NaN" be returned for one but not the other? I have modified the
project so that the values of the "NaN" numbers that should be floating point values
are recorded in a file called "Errors.txt".
Go here to see the newly modified file
www.avtinconline.com/Silverlight/ImageSpace3Dwpf.zip
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bdb38865 wrote: Go here to see the newly modified file
Can you just post the relevant calculation code here (the original Silverlight
and the ported WPF code)?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Here is the calculation method. It is the same in silverlight and WPF.
private void posImage()
{
//System.Windows.Forms.MessageBox.Show("HEllo");
for (int i = 0; i < _images.Count; i++)
{
Image image = _images[i];
Point3D point3D = _imagePoint3Ds[image];
double zActual = SPACE_LENGTH + (point3D.z - _camera.z);
double scale = SPACE_LENGTH / zActual - EFFECT_FACTOR;
// update the image position and scale
if (scale > 0)
{
image.SetValue(Canvas.LeftProperty, (point3D.x - _camera.x) * scale);
image.SetValue(Canvas.TopProperty, (point3D.y - _camera.y) * scale);
Log.WriteToLog(image.ToString() +": "+ Convert.ToString((point3D.x - _camera.x) * scale));
ScaleTransform scaleTransform = new ScaleTransform();
scaleTransform.ScaleX = scale * NEW_SCALE;
scaleTransform.ScaleY = scale * NEW_SCALE;
image.RenderTransform = scaleTransform;
image.Opacity = 1 - 0.99 * zActual / SPACE_LENGTH * 0.5;
//image.Opacity = 1;
// sort the children according to the scale
image.SetValue(Canvas.ZIndexProperty, (int)(SPACE_LENGTH - point3D.z));
}
else
{
// if text move over the screen, place it at the back
point3D.z += SPACE_LENGTH * 2;
}
}
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The problem isn't in there.
The ImageSpace3D.addImages() method is where the random calculations are made.
The calculations are based on the Width and Height properties of the control, which
are always NaN unless set somewhere, which they are not.
ActualWidth and ActualHeight are the properties that should be used, and should have been
used in the Silverlight version as well.
ActualWidth and ActualHeight are not set until the control is loaded so you need to call the
initialization code from a "Loaded" event handler (or later) instead of from the constructor.
Here's what you should have to make it work...
<!-- ImageSpace3D.xaml -->
<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
x:Class="ImageSpace3Dwpf.ImageSpace3D"
x:Name="UserControl"
d:DesignWidth="640" d:DesignHeight="480"
<code>Loaded="UserControl_Loaded"</code> >
<Grid x:Name="LayoutRoot"/>
</UserControl>
public ImageSpace3D()
{
InitializeComponent();
<code>
}
private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
_holder.SetValue(Canvas.LeftProperty, <code>ActualWidth</code> / 2);
_holder.SetValue(Canvas.TopProperty, <code>ActualHeight</code> / 2);
LayoutRoot.Children.Add(_holder);
addImages();
addImages();
_timer = new DispatcherTimer();
_timer.Interval = new TimeSpan(0, 0, 0, 0, 1000 / FPS);
_timer.Tick += new EventHandler(_timer_Tick);
_timer.Start();
}
<code>
private void addImages()
{
int seed = (int)DateTime.Now.Ticks;
for (int i = 0; i < IMAGES.Length; i++)
{
seed += (int)DateTime.Now.Ticks;
Random r = new Random(seed);
String url = IMAGE_PATH + IMAGES[i];
Image image = new Image();
image.Source = new BitmapImage(new Uri(url, UriKind.Relative));
Point3D point3D = new Point3D();
point3D.x = r.NextDouble() * <code>ActualWidth - ActualWidth</code> / 2;
point3D.y = r.NextDouble() * <code>ActualHeight - ActualHeight</code> / 2;
point3D.z = r.NextDouble() * SPACE_LENGTH * 2 - SPACE_LENGTH;
image.SetValue(Canvas.LeftProperty, point3D.x);
image.SetValue(Canvas.TopProperty, point3D.y);
image.MouseLeftButtonDown += new MouseButtonEventHandler(image_MouseLeftButtonDown);
image.Cursor = Cursors.Hand;
_imagePoint3Ds.Add(image, point3D);
_holder.Children.Add(image);
_images.Add(image);
}
}
Mark Salsbery
Microsoft MVP - Visual C++
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Thanks for you help; however, now I get the following error when I attempt to implement your changes to the XAML for ImageSpace3Dwpf:
Error 1 ''d' is an undeclared namespace. Line 9, position 2.' XML is not valid. C:\Documents and Settings\rDev\My Documents\Expression\Expression Blend Projects\ImageSpace3Dwpf\ImageSpace3Dwpf\ImageSpace3D.xaml 9 2 ImageSpace3Dwpf
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The point is - just add the Loaded event handler.
That's all I changed in the XAML.
Mark Salsbery
Microsoft MVP - Visual C++
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Never mind, I got it. Thanks for all your help
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bdb38865 wrote: Thanks for all your help
No problem!
Mark Salsbery
Microsoft MVP - Visual C++
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I have a button on a ControlTemplate. I want to handle its click events in the control that uses the template. How would I make that happen?
<ControlTemplate x:Key="UDPTemplateTabControlEx" TargetType="{x:Type TabControl}">
<Grid x:Name="Grid" KeyboardNavigation.TabNavigation="Local">
<ScrollViewer x:Name="HeaderPanelEx" Grid.Row="0" Grid.Column="0"...>
<ScrollViewer.Style>
<Style TargetType="{x:Type ScrollViewer}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Grid Margin="0,0,0,0" Grid.Row="0" x:Name="HeaderPanelEx">
<Button Grid.Column="0" Width="25" Content="..." />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ScrollViewer.Style>
</ScrollViewer>
</Grid>
</ControlTemplate>
I tried putting a name property on it, but I still can't see it in intellisense in the code...
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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John Simmons / outlaw programmer wrote:
I did something similar but I used the Command property of the button not the Click event.
<button grid.column="0" width="25" content="..." command="MyCommand" />
Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Individuality is fine, as long as we do it together - F. Burns
Help humanity, join the CodeProject grid computing team here
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John Simmons / outlaw programmer wrote: I want to handle its click events in the control that uses the template. How would I make that happen?
It can also depend on where the template is defined.
If it's in a place backed by code-behind (ie a class) then you can add
an event handler like you would anywhere else.
If the template is in a resource dictionary or some other place without a class
then maybe implementing a command as Wes mentioned would be the way to go.
You can also wire event handlers at runtime, perhaps by overriding OnApplyTemplate()[^] and
using FindName()[^] to find the button instantiated by the template.
Mark Salsbery
Microsoft MVP - Visual C++
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I'm not sure about the event stuff in WPF yet. I mean, sure, I'm handling click events from buttons and stuff, but I'm not sure about the routed event thing. I haven't found a decent explanation that also includes a decent example of it either. I'm sure that I should look at the routed event stuff, because I'm making controls public in user controls that I have to handle in the form or user control that hosts them, and it just feels wrong to do that.
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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