Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

ItemsPresenter bind CommandParameter to item

Posted on 2010-08-16
2
Medium Priority
?
1,278 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

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

In order to hide the "ugly" records selectors (triangles) in the rowheaders, here are some suggestions. Microsoft doesn't have a direct method/property to do it. You can only hide the rowheader column. First solution, the easy way The first sol…
This article aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…

688 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