Solved

ItemsPresenter bind CommandParameter to item

Posted on 2010-08-16
2
1,264 Views
Last Modified: 2012-08-13
I have an ItemsPresenter with a context menu.  In the context menu there is one menuitem and I want to bind the CommandParameter of the MenuItem to the Item inside of the ItemsPresenter. But I'm having trouble getting to the Item.  How Do I bind the CommandParameter to the Item?  The item is a ViewModel Object I created.

                                                                <ItemsPresenter Margin="24,0,0,0" >
                                                                    <ItemsPresenter.ContextMenu>
                                                                        <ContextMenu>
                                                                           <MenuItem Header="Remove file from OCR list" Command="{x:Static commands:OCRCommands.RemoveFile}"   CommandParameter="{Binding}">
                                                                                <MenuItem.Icon>
                                                                                    <Image Source="/ThemeManager;component/Images/Delete - Copy.png" Width="15"  Margin="5"/>
                                                                                </MenuItem.Icon>
                                                                            </MenuItem>
                                                                        </ContextMenu>
                                                                    </ItemsPresenter.ContextMenu>
                                                                </ItemsPresenter>
<GroupStyle x:Key="groupItemStyle">
                                <GroupStyle.ContainerStyle>
                                    <Style TargetType="{x:Type GroupItem}">
                                        <Setter Property="Margin" Value="0,0,0,5"/>
                                        <Setter Property="Template">
                                            <Setter.Value>
                                                <ControlTemplate TargetType="{x:Type GroupItem}">
                                                    <Expander IsExpanded="True" Background="AliceBlue">
                                                        <Expander.Header>
                                                            <DockPanel>
                                                                <TextBlock Text="{Binding Path=Name}" Margin="5,0,0,5" Width="200" />
                                                                <StackPanel Orientation="Horizontal">
                                                                    <TextBlock Text="(" />
                                                                    <TextBlock Text="{Binding Path=ItemCount}" />
                                                                    <TextBlock Text=" items)" />
                                                                </StackPanel>
                                                            </DockPanel>
                                                        </Expander.Header>
                                                        <Expander.Content>
                                                            <Border Background="White" Margin="2" CornerRadius="3">
                                                                <ItemsPresenter Margin="24,0,0,0" >
                                                                    <ItemsPresenter.ContextMenu>
                                                                        <ContextMenu>
                                                                            <MenuItem Header="Remove file from OCR list" Command="{x:Static commands:OCRCommands.RemoveFile}"   CommandParameter="{Binding}">
                                                                                <MenuItem.Icon>
                                                                                    <Image Source="/Dms.ThemeManager;component/Images/Delete - Copy.png" Width="15"  Margin="5"/>
                                                                                </MenuItem.Icon>
                                                                            </MenuItem>
                                                                        </ContextMenu>
                                                                    </ItemsPresenter.ContextMenu>
                                                                </ItemsPresenter>
                                                            </Border>
                                                        </Expander.Content>
                                                    </Expander>
                                                </ControlTemplate>
                                            </Setter.Value>
                                        </Setter>
                                    </Style>
                                </GroupStyle.ContainerStyle>
                            </GroupStyle>

Open in new window

0
Comment
Question by:OFGemini
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
2 Comments
 

Author Comment

by:OFGemini
ID: 33464861
Hello,

I've added screenshot of when my Execute Command Handler is called.  When I bind using CommandParameter="{Binding}"  I get an object of the MS.Internal.DataCollectionViewGroupInternal.
In Debug mode I looked inside this object and I see it as a collection and the Item I really wanted to bind to is present in the collection.  My question is how to I bind directly to my object via XAML.

I've attached a screenshot showing what I got and What I'm trying to get.


Capture.PNG
0
 

Accepted Solution

by:
OFGemini earned 0 total points
ID: 33465218
Hi,

I found the solution after looking at this article:

http://blogs.msdn.com/b/vinsibal/archive/2009/01/21/exploring-mvvm-grouping-with-the-datagrid.aspx


The key was to bind to Items[0].

<MenuItem Header="Remove file from OCR list"
                                                                                      Command="{x:Static commands:OCRCommands.RemoveFile}"
                                                                                      CommandParameter="{Binding Path=Items[0]}">



<ItemsPresenter Margin="24,0,0,0" >
                                                                    <ItemsPresenter.ContextMenu>
                                                                        <ContextMenu>
                                                                            <MenuItem Header="Remove file from OCR list" 
                                                                                      Command="{x:Static commands:OCRCommands.RemoveFile}"
                                                                                      CommandParameter="{Binding Path=Items[0]}">
                                                                                <MenuItem.Icon>
                                                                                    <Image Source="/Dms.ThemeManager;component/Images/Delete - Copy.png" Width="15"  Margin="5"/>
                                                                                </MenuItem.Icon>
                                                                            </MenuItem>
                                                                        </ContextMenu>
                                                                    </ItemsPresenter.ContextMenu>
                                                                </ItemsPresenter>

Open in new window

0

Featured Post

Revamp Your Training Process

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Extention Methods in C# 3.0 by Ivo Stoykov C# 3.0 offers extension methods. They allow extending existing classes without changing the class's source code or relying on inheritance. These are static methods invoked as instance method. This…
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
In this video, viewers are given an introduction to using the Windows 10 Snipping Tool, how to quickly locate it when it's needed and also how make it always available with a single click of a mouse button, by pinning it to the Desktop Task Bar. Int…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
Suggested Courses

630 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question