wpf listview gridview swaping item template

I have a list view that is displaying data using the gridview. This list is displaying data typical of grid views. Lots of data displayed in rows and columns. However, on some rows I do not have any data to display, in the columns. I would like to swap out the item template for that row and display another template for the entire row that wou开发者_运维技巧ld display something like "blank row" or "empty row" for the text and also style the whole row not the individual cells.

I have been trying to use this post: http://cloudstore.blogspot.com/2008/06/creating-custom-view-mode-that-supports.html.

So I have a custom view for the list view. Basically, I have subclassed the GridView class and on the PrepareItems method override, I can select the new template that I want to display for a particular row or the default template. However, when I try to select a new template, the gridview will never render anything for that row. It will still render if I use the default template. I assume that the layout for a GridView is interfering with my setting of the template for the row I want to swap out. Is this possible or will I have to create a custom view that mimics the GridView and not subclass the GridView class? I would like to keep the columns the way they are without too much rework. Any suggestions or anyone have experience with this type of scenario?

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You can use DataTriggers. Use code like this (switching templates depending on if value of SomeItemProperty is 0 or not):

<DataTemplate x:Key="MyItemTemplate">
    <StackPanel>
        <StackPanel Name="normalStackPanel">
            <!-- template for normal row -->
        </StackPanel>
        <StackPanel Name="emptyStackPanel" Visibility="Collapsed">
            <!-- template for empty row -->
        </StackPanel>
    </StackPanel>

    <DataTemplate.Triggers>
        <DataTrigger Binding="{Binding SomeItemProperty}" Value="0">
            <Setter TargetName="normalStackPanel" Property="Visibility" Value="Collapsed" />
            <Setter TargetName="emptyStackPanel" Property="Visibility" Value="Visible" />
        </DataTrigger>
    </DataTemplate.Triggers>
</DataTemplate>

Hope it helps.

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Okay here is what I did to solve my problem, however it will incur some rework on my part. I replaced with my listview with an items control. So I am not using the GridView of the list view anymore. Instead I defined a GridViewColumnCollection with my columns set up with how I wanted them.

For my header I used a GridViewHeaderRowPresenter with its columns property bound to GridViewColumnCollection. This takes care of the Column Headers.

Underneath my header I insert the ItemsControl which is bound to my items list. However, I now use a DataTemplateSelector that will swap the template out depending on the item and its properties. If you are unfamiliar with the DataTemplate Selector go here: data template selector

Basically, my default template for items in the list is a GridViewRowPresenter which its columns property is bound to GridViewColumnCollection. This keeps it in line with the headers. However, I can still swap out the template for a row to be something else through the Data Template Selector. And this solves my problem.

However, I now have to rework out of a listview with a gridview that I had styled, and use this method. So this does not come without some cost.