Re: Button not firing in WPF Toolkit datagrid - WPF Discussion Boards

Re: Button not firing in WPF Toolkit datagrid

Hannes Larsson17-Feb-10 21:53

17-Feb-10 21:53

Hi
I ment to bind to a public command that my PresentationModel i exposing.
The user controls datacontext is set to this PresentationModel. The binding works fine if I move the button out side the datagrid. Can't figure out why it does'nt work.

/h

Re: Button not firing in WPF Toolkit datagrid

AspDotNetDev17-Feb-10 22:03

AspDotNetDev

17-Feb-10 22:03

Where the button is located (e.g., in a DataGrid) shouldn't matter. I've created buttons with bound commands inside a DataGrid before without problems. Create a small example that demonstrates the issue and post the full code here (but remember to make the example as small as possible).

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Re: Button not firing in WPF Toolkit datagrid [modified]

Hannes Larsson17-Feb-10 23:03

Hannes Larsson

17-Feb-10 23:03

Ok, so i have created a small project that displayes my issue, but i can't upload the whole project as zip, so i have to add all the code:

It is a normal wpf project (.NET 4, but 3.5 should work as well, just need wpf toolkit)
Also i use delegate commands fron WPF PRISM so these two assemblies are needed:
Microsoft.Practices.Composite.dll
Microsoft.Practices.Composite.Presentation.dll

MainWindow.xaml

<Window x:Class="DataGridButtonCommandTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="300" Width="400" x:Name="MyView">
    <Grid DataContext="{Binding}">
        <Grid.RowDefinitions>
            <RowDefinition Height="224*" />
            <RowDefinition Height="45" />
        </Grid.RowDefinitions>
        <DataGrid AutoGenerateColumns="False" ItemsSource="{Binding Path=MyItems}" Margin="10,10,10,0" CanUserAddRows="False" CanUserDeleteRows="False" Grid.RowSpan="1">
        <DataGrid.Columns>
          <DataGridTemplateColumn Header="Title" Width="100">
            <DataGridTemplateColumn.CellTemplate>
              <DataTemplate>
                <TextBlock Text="{Binding ItemTitle}"/>
              </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
          </DataGridTemplateColumn>
                <DataGridTemplateColumn Header="Button" Width="100">
                    <DataGridTemplateColumn.CellTemplate>
                      <DataTemplate>
                        <Button Content="{Binding ButtonTitle}" Command="{Binding ElementName=MyView, Path=DataContext.ShowMyPopUp}"/>
                      </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
      </DataGrid>
      <StackPanel Orientation="Horizontal" Grid.Row="1" VerticalAlignment="Bottom" Margin="10">
        <TextBlock Text="Button with same command binding: " VerticalAlignment="Center" Margin="0,0,5,0"/>
        <Button Content="Show popup" Command="{Binding ElementName=MyView, Path=DataContext.ShowMyPopUp}" Width="75"/>
      </StackPanel>
    </Grid>
</Window>

MainWindow.xaml.cs

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;

namespace DataGridButtonCommandTest
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.DataContext = new PresentationModel();
        }
    }
}

PresentationModel.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using Microsoft.Practices.Composite.Presentation.Commands;

namespace DataGridButtonCommandTest
{
    public class PresentationModel : INotifyPropertyChanged
    {
        private ObservableCollection<MyItem> myItems;
        public event PropertyChangedEventHandler PropertyChanged;
        public DelegateCommand<object> ShowMyPopUp { get; private set; }

        public PresentationModel()
        {
            MyItems = new ObservableCollection<MyItem>
                          {
                              new MyItem{ItemTitle = "First", ButtonTitle = "Show popup"}, 
                              new MyItem{ItemTitle = "Second", ButtonTitle = "Show popup"},
                              new MyItem{ItemTitle = "Third", ButtonTitle = "Show popup"}
                          };

            ShowMyPopUp = new DelegateCommand<object>(OnShowMyPopUp);
        }

        private void OnShowMyPopUp(object obj)
        {
            var popUp = new PopUpWindow();
            popUp.ShowDialog();
        }

        public ObservableCollection<MyItem> MyItems
        {
            get
            {
                return myItems;
            }
            set
            {
                if(!Equals(myItems, value))
                {
                    myItems = value;
                    OnPropertyChanged("MyItems");
                }
            }
        }

        private void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }

    public class MyItem
    {
        public string ItemTitle { get; set; }
        public string ButtonTitle { get; set; }
    }
}

PopUpWindow.xaml

<Window x:Class="DataGridButtonCommandTest.PopUpWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="PopUpWindow" Height="300" Width="300">
    <Grid>
      <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Text="It works!!!"/>
    </Grid>
</Window>

PopUpWindow.xaml.cs

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.Shapes;

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

modified on Thursday, February 18, 2010 5:10 AM

Re: Button not firing in WPF Toolkit datagrid

AspDotNetDev17-Feb-10 23:13

AspDotNetDev

17-Feb-10 23:13

You need to HTML encode your code when you paste it. I can't read this.

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Re: Button not firing in WPF Toolkit datagrid

Hannes Larsson17-Feb-10 23:15

Hannes Larsson

17-Feb-10 23:15

hehe, sorry, forgot =)
i fixed it in the previous post

Re: Button not firing in WPF Toolkit datagrid

AspDotNetDev17-Feb-10 23:42

AspDotNetDev

17-Feb-10 23:42

It's still not quite right. Your observable collection appears to not have a templated type. And I'm not sure that I saw "System.Collections.ObjectModel" included (for ObservableCollection).

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Re: Button not firing in WPF Toolkit datagrid

AspDotNetDev18-Feb-10 0:02

AspDotNetDev

18-Feb-10 0:02

I was able to confirm your problem and I did some searching. I came across this. Basically, I think DataGrid handles scoping incorrectly, so when you say "ElementName=", the binding is not able to find anything outside of the DataGrid. To get around that, you use a relative source instead of element name:

XML

<Button Content="Show Popup" Command="{Binding Path=DataContext.ShowMyPopUp, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}}" />

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Re: Button not firing in WPF Toolkit datagrid

Hannes Larsson18-Feb-10 1:39

Hannes Larsson

18-Feb-10 1:39

SOOOOOO NICE!!!!

it works so good! thanks for the help!

Re: Button not firing in WPF Toolkit datagrid

Member 454056418-Feb-10 10:10

Member 4540564

18-Feb-10 10:10

I still cant get this to work. I have tried every combination from posts about this subject but I am still running into the issue of it thinking I am selecting the entire row instead of firing off the button command.

PLEASE HELP!

<UserControl.Resources>
      <ObjectDataProvider  x:Key="Viewmodel"   ObjectType="{x:Type ViewModels:DocManagementViewModel}"/>
      <Utilities:ArithmeticConverter x:Key="arithConverter" />
      <Utilities:BooleanToVisibilityConverter x:Key="MyBooleanToVisibilityConverter" />
  </UserControl.Resources>



<Grid Margin="0,32.667,3,20"     Panel.ZIndex="2296" x:Name="LayoutGrid"         >
                  <Grid.ColumnDefinitions>
                      <ColumnDefinition/>
                      <ColumnDefinition Width="Auto" MinWidth="18.542"/>
                  </Grid.ColumnDefinitions>
                  <Grid.RowDefinitions>
                      <RowDefinition MinHeight="300"/>
                      <RowDefinition Height="Auto"/>
                  </Grid.RowDefinitions>


                  <Grid Margin="0,-20,7,0"  >
                      <Grid.RowDefinitions></Grid.RowDefinitions>
                      <Grid.ColumnDefinitions>
                          <ColumnDefinition Width="Auto"></ColumnDefinition>
                          <ColumnDefinition Width="*"></ColumnDefinition>
                      </Grid.ColumnDefinitions>


                      <dg:DataGrid
                            Visibility="{Binding HideElement,  Converter={StaticResource MyBooleanToVisibilityConverter}}"
                               Grid.Column="1"  Cursor="Hand"
                               Margin="15.5,-19,17,12"
                               Grid.Row="0"
                               AlternationCount="2"
                               Panel.ZIndex="1000"
                           Style="{DynamicResource DataGridStyle}"
                               AutoGenerateColumns="False"
                               SelectedItem="{Binding SelectedPatientDocInfoItem}"
                               ItemsSource="{Binding PatientDocInfoCollection}"
                               x:Name="DocumentSearchResultsDG"
                               BorderThickness="0">
   <dg:DataGrid.Resources>

                              <Style TargetType="{x:Type dg:DataGridRowHeader}">
                                  <Setter Property="Background" Value="Transparent"/>
                              </Style>
                          </dg:DataGrid.Resources>
                          <dg:DataGrid.Columns>
                              <dg:DataGridTextColumn Binding="{Binding DocumentName}"  IsReadOnly="True" Width=".5*" Header="Doc Name"  />
                              <dg:DataGridTextColumn Binding="{Binding Category}"   IsReadOnly="True" Width=".5*"  Header="Category" />
                              <dg:DataGridTextColumn Binding="{Binding CreatedDate, StringFormat=\{0:MM/dd/yyyy\}}"   IsReadOnly="True" Width=".5*"  Header="Scanned Date" />
                              <dg:DataGridTextColumn Binding="{Binding CreatedByUserId}"   IsReadOnly="True" Width=".5*"  Header="Scanned By"  />
                              <dg:DataGridTextColumn Binding="{Binding Comment}"    IsReadOnly="True" Width=".5*"  Header="Comment" />
                              <dg:DataGridTemplateColumn     Header="Delete" Width="100"   >
                                  <dg:DataGridTemplateColumn.CellTemplate >
                                      <DataTemplate >
                                          <Button HorizontalAlignment="Center" Command="{Binding  Path=DataContext.DeleteItem, RelativeSource={RelativeSource  FindAncestor,  AncestorType={x:Type UserControl}}}" Margin="0,1,0,0" Height="15" Width="15"  Template="{DynamicResource RedGlassButton}" Style="{StaticResource CloseBtnStyle}" >

                                          </Button>
                                      </DataTemplate>
                                  </dg:DataGridTemplateColumn.CellTemplate>
                                  </dg:DataGridTemplateColumn>
                          </dg:DataGrid.Columns>
                      </dg:DataGrid>
                  </Grid>



              </Grid>

Here is my ViewModel

<br />
   public ICommand DeleteItem { get; private set; }<br />
   public DocManagementViewModel()<br />
        {           <br />
            DeleteItem = new DelegateCommand<object>(obj => DeleteDocumentGroup());<br />
        }<br />
<br />
  private void DeleteDocumentGroup()<br />
        {<br />
            PatientDocumentRepository.Delete(PatientDocument);<br />
}<br />

Sharing Core Objects Between Server & Client

Jammer12-Feb-10 7:57

Jammer

12-Feb-10 7:57

Hi All,

I'm just implementing my first Silverlight WCF service in an ASP.NET web site hosting a Silverlight client and have run into a problem.

The service and client are working together fine, I've just done a little "Hello World" test on the two communicating. Now I'm ready to move onto the implementation and the guts of the service.

In a normal WCF setup for me I would create a separate class library project containing the service contract and any required domain objects. Then I can link to that from the service and the client and get all the same objects used at both ends of the pipe.

However, I'm running into an error:

Could not load file or assembly 'System.ServiceModel, Version=2.0.5.0

I'm assuming this is because the service and client are using two different versions of .NET. So the Core library is getting compiled in one environment and then told to run in two, fail! Smile | :)

Is there a work around for this?

Cheers,

Jammer
My Blog | Articles | DMon | SampleSort

Re: Sharing Core Objects Between Server & Client

Pete O'Hanlon12-Feb-10 9:33

Pete O'Hanlon

12-Feb-10 9:33

Either use .NET 4 which allows this (in a somewhat limited way), or you need to create a separate Silverlight DLL and link your classes in as external items.

"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.

My blog | My articles | MoXAML PowerToys | Onyx

Re: Sharing Core Objects Between Server & Client

Jammer13-Feb-10 12:51

Jammer

13-Feb-10 12:51

Hi Pete,

I tried this both ways, making a normal class library and a silverlight class library and each time either the client or the service complained about the runtime version.

Jammer
My Blog | Articles | DMon | SampleSort

Popup window in silverlight

xodeblack12-Feb-10 6:01

xodeblack

12-Feb-10 6:01

Hi .......
I want to display popup window ............
when user click on asp.net button(register clientside
JavaScript function) in aspx page .....
then popupwindow should display with given text,
text is parameter ......................
that pass asp.net button to client JavaScript function ...

waiting your reply

Dre@m is not th@t wh@t u see in sleep.Dre@m is the thing which does not allow u to sleep

Re: Popup window in silverlight

Abhinav S12-Feb-10 8:10

Abhinav S

12-Feb-10 8:10

Sorry. I dont think I can understand you question completely.

For popups, see here[^]. Searching on the internet should give you plenty more popup options.

If you want to pass something between Javascript and Silverlight - use the html bridge as described here[^].

Me, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...

controls visible in designer but not available in window at runtime [modified]

Member 290565112-Feb-10 2:30

Member 2905651

12-Feb-10 2:30

Hi,
I wanted to create wpf controls dynamically based on a business model.
for that i tried to use DataTemplates for creation of controls based on values from an array. And then bind the array to ItemControls Itemsource.
I used this example for testing.. This is what i did..

< Window x:Class="Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="dialog" xmlns:sys="clr-namespace:System;assembly=mscorlib"
Width="393.412" Height="333.4">

< Window.Resources>
< ResourceDictionary 
  Source="ResourceDictionary\ControlCreatorDataTemplate.xaml"/>
</ Window.Resources>

< StackPanel>
< ItemsControl ItemsSource="{Binding Source={StaticResource data}}" Visibility="Visible" />
</ StackPanel>
</ Window>

resource dictionary

< ResourceDictionary  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 xmlns:sys="clr-namespace:System;assembly=mscorlib">
< x:ArrayExtension Type="{x:Type sys:Object}" x:Key="data">
< sys:String>String</ sys:String>
< sys:Boolean>True</ sys:Boolean>
< sys:Boolean>False</ sys:Boolean>
< sys:Double>10.0</ sys:Double>
</ x:ArrayExtension >

< DataTemplate DataType="{x:Type sys:Boolean}" >
< CheckBox Content="CheckBox" IsChecked="{Binding Mode=OneWay}" />
</ DataTemplate >
< DataTemplate DataType="{x:Type sys:String}" >
< TextBox Text="{Binding Mode=OneWay}" />
</DataTemplate >
< DataTemplate DataType="{x:Type sys:Double}" >
< TextBox Text="{Binding Mode=OneWay}" />
</ DataTemplate >
</ ResourceDictionary >

Problem is i am able to view the checkbox and text in the designer window in VS08
When i run the window -> the controls are not visible...

Any help is appreciated

-Jasper

J.p.Jasper

Button click event within a ControlTemplate?

Richard Dutton12-Feb-10 1:02

Richard Dutton

12-Feb-10 1:02

Hi,

I have a class which derives from TextBox called EntryTextBox and provides a PreviewKeyDown event handler (although for the purposes of this question, it's not relevant).

I have produced a ControlTemplate within a style as follows:

<Style TargetType="{x:Type my:EntryTextBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type my:EntryTextBox}">
<DockPanel>
<Border BorderThickness="1" HorizontalAlignment="Stretch" BorderBrush="DarkGray" Background="White" Width="100">
<DockPanel>
<Button DockPanel.Dock="Right" Visibility="{Binding Path=KeyboardPopup,Converter={StaticResource VisibilityConverter},RelativeSource={RelativeSource TemplatedParent}}">
<ContentControl Width="15" Height="10" Template="{StaticResource KeyboardIconContent}"/>
</Button>
<ScrollViewer Margin="0" Background="Transparent" HorizontalAlignment="Stretch" x:Name="PART_ContentHost"/>
</DockPanel>
</Border>
</DockPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Which as you can see displays a Button as part of the TextEntry box depending on the value of KeyboardPopup. This works fine, but I want to be able to act on the button's click handler from within my EntryTextBox class but don't know how to do it.

I've read in "Pro WPF in C# 2008, Matthew MacDonald, P872" that you need to "give your elements recognisable names and attach event handlers to them programatically in the control constructor" but I am unsure of the syntax I should use in the class constructor of EntryTextBox.

Can anyone help me?

Cheers

Richard

Re: Button click event within a ControlTemplate?

rhuiden12-Feb-10 4:59

rhuiden

12-Feb-10 4:59

1. Name the button something line "PART_Button".
2. Then override OnApplyTemplate().
3. In OnApplyTemplate use GetTemplateChild("PART_Button").
That will get you a reference to the button to add your event handler. Of course you will want to check the returned object to make sure is is not null. Someone may change the template for your control. Wink | ;)