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Daniel Suitor
1240
Setting the Label Presenter’s Context Menu Property
posted

An earlier post on the old forum suggested that a context menu could be assigned to a field/column header by setting the style on the Label Presenter.  I tried this via the following code.  The code in question is in red.

 

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// Create and assign a field layout

FieldLayout theFieldLayout = new FieldLayout();

FieldLayouts.Add(theFieldLayout);

 

// Go through all column details

foreach (ColDetails CurrColDetails in m_ColHeaders)

{

    // Create the new field (Column)

    Field currColField = new Field();

 

    // Assign the label presenter

    currColField.Label = CurrColDetails.HeaderName;

 

    // Bind

    currColField.Name = CurrColDetails.Binding;

 

    // Add the new menu item

    MenuItem CurrColMenuItem = new MenuItem();

    CurrColMenuItem.Header = CurrColDetails.HeaderName;

    CurrColMenuItem.DataContext = CurrColDetails;

    CurrColMenuItem.Click += new RoutedEventHandler(MenuItemClickHandler);

    m_ContextMenu.Items.Add(CurrColMenuItem);

 

    // Add the new field to the field layout

    theFieldLayout.Fields.Add(currColField);

}

 

Style labelPresenterStyle = new Style(typeof(LabelPresenter));

labelPresenterStyle.Setters.Add(new Setter(LabelPresenter.ContextMenuProperty, m_ContextMenu));

foreach (Field currField in theFieldLayout.Fields)

{

    currField.Settings.LabelPresenterStyle = labelPresenterStyle;

}

 

grid.FieldLayouts.Add(theFieldLayout);

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This results in an exception being thrown after the grid is initialized, the  source of which I have not been able to determine.  I do know that if I take out the style logic (shown in red) the exception does not get thrown. 

 

Am I using the ContextMenuProperty correctly?  I cannot find any documentation anywhere that describes its use.  Thank you.

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  • 4850
    Offline posted

    What exception is being thrown?

    BTW, instead of looping over each Field you can specify this setting once for the FieldLayout or even as a grid level default, e.g.

    theFieldLayout.FieldSettings.LabelPresenterStyle = labelPresenterStyle

    or

    grid.FieldSettings.LabelPresenterStyle = labelPresenterStyle

     

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