Menu and Context Menu for Silverlight 4.0

New Post: SL5 Support?

manish00gupta00 — Fri, 01 Mar 2013 07:32:16 GMT

I am too facing this problem - "child popup windows doesn't show right next to its parent, there is a horizontal gap of ~100 pixels."

New Post: why a Slider in menu can not Binding Background.Opacity of layoutRoot,but grdPopupMenu(a grid control)can

xj20305 — Mon, 07 Jan 2013 04:04:57 GMT

thanks

New Post: why a Slider in menu can not Binding Background.Opacity of layoutRoot,but grdPopupMenu(a grid control)can

xj20305 — Mon, 07 Jan 2013 04:04:32 GMT

hi,i have a issue,but my english is ugly.
why a Slider in menu can not Binding Background.Opacity of layoutRoot,but grdPopupMenu(a grid control)can
you know i want to change the Background.Opacity of layoutRoot
the main code as follow
xaml:
<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
x:Class="PopupMenuApp.UserControl2"
d:DesignWidth="640" d:DesignHeight="480"
xmlns:my="clr-namespace:SL4PopupMenu;assembly=SL4PopupMenu"
>

<Grid x:Name="LayoutRoot" Background="#FFCB6969">
<Rectangle Fill="#FFF4F4F5" Height="98" Margin="146,108,182,0" Stroke="Black" VerticalAlignment="Top"/>
<my:PopupMenu x:Name="pmMain"
RightClickElements="LayoutRoot"
AccessShortcut="Ctrl+Alt+M"
AccessShortcutTargetElementName="LayoutRoot"
>



<Grid x:Name="grdPopupMenu" Background="#FFB01C99" >

<ListBox x:Name="lstPopupMenu" Margin="20,0,0,0" >
<my:PopupMenuItem x:Name="pmiCut" Header="Cut" Tag="ClipboardMenuTag" ImageSource="../images/Cut.png" />
<my:PopupMenuItem x:Name="pmiCopy" Header="Copy" Tag="ClipboardMenuTag" ImageSource="../images/Copy.png" />

<my:PopupMenuItem x:Name="pmiPaste" ImageSource="../images/Paste.png">
<TextBlock Text="Paste" Tag="ClipboardMenuTag"/>
</my:PopupMenuItem >
<my:PopupMenuSeparator Tag="ClipboardMenuTag"/>
<my:PopupMenuItem x:Name="pmiOrientableMenu" Header="Orientable Menu" CloseOnClick="False" ImageSource="../images/4_direction.png" ImageRightSource="../images/arrow.png" />
<my:PopupMenuSeparator/>
</ListBox>
</Grid>
</my:PopupMenu>
<Slider x:Name="stpTransparency" Height="35" VerticalAlignment="Center"
Value="{Binding Background.Opacity, ElementName=grdPopupMenu, Mode=TwoWay}" Maximum="1" HorizontalAlignment="Center" Width="200"/>

</Grid>
</UserControl>

csharp code behind:
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace PopupMenuApp
{
public partial class UserControl2 : UserControl
{
public UserControl2()
{
// 为初始化变量所必需
InitializeComponent();

pmMain.AddItem(stpTransparency).CloseOnClick = false;

}
}
}

Created Issue: why a Slider in menu can not Binding Background.Opacity of layoutRoot,but grdPopupMenu(a grid control)can [7698]

xj20305 — Sun, 06 Jan 2013 09:33:48 GMT

Commented Issue: Silverlight 5 issue [7693]

jmpirelli — Tue, 23 Oct 2012 10:42:24 GMT

EDIT: Oh please disregard it, it looks like something was messed up in my build system so somehow I got both dlls loaded. Please delete this issue if this is possible.

/// ------------

SL4PopupMenu stopped working for me when I upgraded to SL5.
I've even rebuilt SL4PM for SL5, but I still get the following error:
Error 1 The tag 'PopupMenuItem' does not exist in XML namespace 'clr-namespace:SL4PopupMenu;assembly=SL4PopupMenu'. C:\test\SilverlightApplication3\SilverlightControl1.xaml 8 10 SilverlightApplication3

Any ideas? Here's the offending XAML:

<my:PopupMenu
x:Class="Slex.Viewers.LineChart.LineChartPopupMenu"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:my="clr-namespace:SL4PopupMenu;assembly=SL4PopupMenu"
xmlns:Controls="clr-namespace:System.Windows.Controls;assembly=System.Windows">
<Controls:ListBox>
<my:PopupMenuItem Header="Markers">
<my:PopupMenu>
<TextBox></TextBox>
</my:PopupMenu>
</my:PopupMenuItem>
</Controls:ListBox>
</my:PopupMenu>

Comments: Get the source code, open in VS, set the target to SL5, fix the toolkit references to V5 and rebuild. I uploaded the result to https://skydrive.live.com/redir?resid=1E771DCD1C382F9C!590 if anyone is interested.

New Post: SL5 Support?

skalkin — Fri, 27 Jul 2012 00:53:15 GMT

It compiles, but there are some glitches - for instance, child popup windows doesn't show right next to its parent, there is a horizontal gap of ~100 pixels.

New Post: ScrollViewer in Long PopupMenu

ZiadJ — Tue, 26 Jun 2012 12:33:02 GMT

Hi Hemant,

To get scrolling ability you can just add your items to a Listbox and enable its built in vertical scrollbar.

Cheers

Ziad

New Post: ScrollViewer in Long PopupMenu

hemant2701 — Tue, 26 Jun 2012 08:25:25 GMT

Hi Ziad,

I am using SL4 Popupmenu control. My Popup menu generates a long list of PopupMenuItem. You know browser Height is fixed hence few portion of PopupMenu is not visible. Is it possible to provide ScrollVeiwer so that User can scroll to the last PopupMenuitem in case Height of PopupMenu generated is greater than Browser Height.

Thanks & Regards,

Hemant

New Post: Icon is not displaying through code in PopupMenu in SL4 BA

hemant2701 — Tue, 26 Jun 2012 08:15:32 GMT

ZiadJ wrote:

I still haven't found a clean solution to the problem and all I could to do is make the code behind approach a little less invasive by using the following static method:
public static void PreloadMenuImages(Image imageLoader)
{
    foreach (var item in PopupMenuManager.MenuTriggers
                                         .Select(mt => mt.PopupMenuBase).OfType<PopupMenu>()
                                         .SelectMany(m => m.Items).OfType<PopupMenuItem>())
    {
        imageLoader.Source = item.ImageSource;
        imageLoader.Source = item.ImageRightSource;
    }
}
To start with make sure you have a dummy Image control in your page named, say imgLoader, so that you can pass it as parameter in the new method.

Then simply call it once your menus have been generated. All it does is loop through every image in your menus and loads them in your app via the dummy image control.

Hi Ziad,

Just want to inform you that above mentioned issue is not occuring in Silverlight 5. I have upgraded my project from SL4 to SL5 and now Icon is displayed through XAML and Code. I guess there is some issue with SL4 Business application.

New Post: Debug.Write still in production version

CrustyApplesniffe — Fri, 16 Mar 2012 14:24:25 GMT

Just to inform you that you've missed a "Debug.WriteLine(DateTime.Now.ToString());" line in the Close() method (in PopupMenuBase)

and ... thank you very much for this 'Must Have'

Crusty Applesniffer

Created Issue: OOB, TopMost and UpdateLayout [7697]

leon123 — Thu, 15 Mar 2012 15:13:40 GMT

Hi!

I am running into a really strange bug.

When using my application in OutOfBrowser mode and setting the Application.Current.MainWindow.TopMost to true, I will get the following exception:

System.ArgumentException was unhandled by user code
Message=Value does not fall within the expected range.
StackTrace:
at MS.Internal.XcpImports.MethodEx(IntPtr ptr, String name, CValue[] cvData)
at MS.Internal.XcpImports.MethodEx(DependencyObject obj, String name)
at System.Windows.UIElement.UpdateLayout()
at SL4PopupMenu.PopupMenuBase.<>c__DisplayClass30.<Open>b__2e()
InnerException:

at line 1275 of the PopupMenuBase.cs class:
OverlayCanvas.UpdateLayout(); // Update the layout positions before placing the menu.

I have tried different approaches to solve this, however none of them did work.

What could be the problem?

Thank you for your help and prompt reply!

Created Issue: NullReferenceException in PopupMenuItem [7696]

mentaldemise — Tue, 13 Mar 2012 05:25:44 GMT

I get a NullReferenceException when I show a Child Window on an event that's chained through the popup menu. I'm not sure that I'm not doing something incredibly stupid. Basically I have a helper that creates a menu with typed-generic methods for things like 'Export via MEMBER' and such. Anyway, when I get the 'done' event back from the service reference and try to open a Child Window this throws an exception for every item that was in this list. It could be a race condition on my end as the menu is also re-built based on the return of that service reference call...

Anyway, I had the source and changingthis on line 465 of PopupMenuItem.cs:
this.Container.IsEnabled = this.IsEnabled; // Sync the container state.

To:
if (this.Container != null)
this.Container.IsEnabled = this.IsEnabled; // Sync the container state.

seems to make the issue go away. I'm not sure the implications. Sorry, I'm lazy. :) It seems to me it's trying access methods from the container when it's been disposed.

Also of note: A MessageBox.Show() will not cause the same issue. I managed to get the exception to go away with the dubugger attached via calling the code to build the menu later than the place I'd like to. The exception presented again in release to the dev sever. :(

Sorry if this wasted someone's time. Thanks for reading!

Commented Issue: Multiple menus open on startup [7695]

nikhilsoft — Mon, 05 Mar 2012 09:36:46 GMT

When the Menu loads and the element is hovered, all the menus in the hierarchy are opened. This happens only for the first time. Later navigation do not have this issue. The screen shot is attached.
Can anyone tell me the work around for this. I am using the latest version 2.4.6.
Comments: I have attached the code in the file attached. I think its got to do with the Opacity setting in the Open function of PopupMenuBase. The Opacity is set to 1 before the menus are positioned. However, I have overcome the problem by setting the TriggerTypes of the child menu on the Showing or Shown event of the Parent Menu. In the earlier code the TriggerTypes were set as shown in the attached code. Please let me know if there is any better way.

Commented Issue: Multiple menus open on startup [7695]

ZiadJ — Sat, 03 Mar 2012 08:29:44 GMT

When the Menu loads and the element is hovered, all the menus in the hierarchy are opened. This happens only for the first time. Later navigation do not have this issue. The screen shot is attached.
Can anyone tell me the work around for this. I am using the latest version 2.4.6.
Comments: If you look at the PopupMenuBase constructor you'll see that it is hidden using the following line of code: this.Visibility = Visibility.Collapsed; Since it's in the constructor it is called before the menu is loaded which is just fine. I could not reproduce it in my app. Could you please send me a sample code to illustrate it? My guess right now is that a function or style somewhere else in your code is altering it.

New Post: How to make it scrollable?

MahmoudElBarbary — Tue, 28 Feb 2012 08:56:28 GMT

Thanks Ziad that fixed it

Regards

Created Issue: Multiple menus open on startup [7695]

nikhilsoft — Tue, 28 Feb 2012 08:05:46 GMT

New Post: How to make it scrollable?

ZiadJ — Mon, 27 Feb 2012 13:36:34 GMT

Ok thanks Mahmoud, this update should fix it:

if (this.Container != null) 
{
	var container = this.Container;

	container.Dispatcher.BeginInvoke(delegate
	{
		 container.IsEnabled = this.IsEnabled; 
	});
}

I haven't tested it myself though so I'm leaving that on you.

New Post: How to make it scrollable?

MahmoudElBarbary — Mon, 27 Feb 2012 09:06:36 GMT

Hi ZiadJ,

The null reference exception appears in the underlined red line

                if (this.Container != null) // Don't bother calling synchContainerState if the container does not yet exist since it will eventually be called in OnApplyTemplate.
                {
                    this.Container.IsEnabled = this.IsEnabled; // Sync the container state.

                    this.Container.Dispatcher.BeginInvoke(delegate
                    {
                       this.Container.IsEnabled = this.IsEnabled; // Sync the container state.
                    });
                }

and the null object is [this.Container]

that exception appears only upon scrolling the context menu.

Thanks for your help

New Post: How to make it scrollable?

ZiadJ — Mon, 27 Feb 2012 01:26:08 GMT

That's weird because the code starts with if (this.Container != null) which is there to make sure that the value is not null beforehand.

I'm missing something here. Can you give me more details on which property is null and on which line?

Otherwise this shouldn't introduce any major bugs. At worst the menu items might not go into disabled mode when IsEnabled is false.

New Post: How to make it scrollable?

MahmoudElBarbary — Sun, 26 Feb 2012 14:02:25 GMT

Dear ZiadJ,

Thanks for your help , i now have a new requirement i wanted to generate the popup menu dynamically, so i did the following

subsubmenu.ItemsControl.MaxHeight = 250;

subsubmenu.Width = 150;

that made the scroll bar appear, but generated null reference exception upon scrolling at line [this.Container.IsEnabled = this.IsEnabled;] in code snippet

                if (this.Container != null) // Don't bother calling synchContainerState if the container does not yet exist since it will eventually be called in OnApplyTemplate.
                {
                    this.Container.IsEnabled = this.IsEnabled; // Sync the container state.

                    this.Container.Dispatcher.BeginInvoke(delegate
                    {
                        this.Container.IsEnabled = this.IsEnabled; // Sync the container state.
                    });
                }

So i commented these lines of codes and everything went fine
Is what i did right and this won't generate further bugs in the future? Or can you help me with another workaround?
Thanks in advance