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Force Size on a Viewbox's Children

So I have a rather interesting question. I have a viewbox that has a few elements in it (a custom user control for an image, a canvas, a label, and a textbox). What I want is to try and have all elements scale with the viewbox, but I want the label and the textbox to have a "Max Size." I have tried using a max width and height on these controls but they seem to ignore it. If someone could take a look at my code below an slap me for what I am doing wrong that would be appreciated.
<Viewbox Name="myViewBox" Stretch="Uniform">
<!--Grid used to track mouse movements in this element for other reasons -->
<Grid Name="grdViewboxGrid" MouseMove="trackMouse">
<Canvas Name="cvsViewboxCanvas" MinWidth="270" MinHeight="270"
VerticalAlignment="Top" HorizontalAlignment="Center"
Panel.ZIndex="1" Background="Black"
MouseUp="Canvas_MouseUp"
MouseMove="Canvas_MouseMove">
<Grid>
<!--Would rather not post here for Intellectual Property reasons-->
<!-- Extension of the image control -->
<CustomImageUserControl />
<Grid>
<Grid Width="{Binding LabelWidthPercentage}"
MaxWidth="50"
Height="{Binding LabelHeightPercentage"
MaxHeight="26"
SnapsToDevicePixels="True" VerticalAlignment="Top"
HorizontalAlignment="Left" Margin="5" IsHitTestVisible="False">
<Label Name="lblViewboxLabel" HorizontalAlignment="Left"
Padding="5,5,5,0" Margin="0,5,0,0"
Style="{x:Null}"
Content="{Binding lblContent}" />
</Grid>
<Grid>
<Grid Width="{Binding TextBoxWidthPercentage}"
MaxWidth="156"
Height="{Binding TextBoxHeightPercentage}"
MaxHeight="45"
SnapsToDevicePixels="True" Vertical="Top"
HorizontalAlignment="Right" Margin="5" IsHitTestVisible="False">
<Border Style="{DynamicResource CustomBorder}" />
<Grid>
<Textbox Name="txtViewboxTextBox" Text="{Binding txtViewbox}" />
</Grid>
</Grid>
</Grid>
</Grid>
</Grid>
</Canvas>
</Grid>
</Viewbox>
If I am not including something that is needed please let me know and I will update my question. Any help would be greatly appreciated this is now day 4 on this issue sadly :-(

I am not sure why you need so many overlapping Grids, but I hope that I can answer your question nevertheless:
In order to have the label left of the text box and to assign a maximum width to each of these two controls, use a Grid with two columns and set the MaxWidth property for each column. Then, assign the label to the left column (the one with index 0) and assign the text box to the right column (index 1). The corresponding code fragment looks like this:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MaxWidth="30"/>
<ColumnDefinition MaxWidth="156" MinWidth="30"/>
</Grid.ColumnDefinitions>
<Label Grid.Column="0" x:Name="lblViewboxLabel" HorizontalAlignment="Left" Foreground="Yellow"
Padding="5,5,5,0" Margin="0,5,0,0"
Style="{x:Null}"
Content="{Binding lblContent}" />
<TextBox Grid.Column="1" x:Name="txtViewboxTextBox" Text="{Binding txtViewbox}" Background="Orange"/>
</Grid>
I also have assigned a MinWidth to the right column; this is necessary to make sure that the text box does not completely disappear if it contains no text.

Cannot scroll to bottom wpf

I have a listbox with objects but I cannot scroll to the bottom of the page. What is the problem? This is the code that I'm using.
<Grid>
<Image Name="Nietcomment" Source="write.png" Width="70" Margin="350,-850,0,0" Tap="Login_popup" Visibility="Visible"/>
<Image Name="welcomment" Source="write2.png" Width="70" Margin="350,-850,0,0" Tap="Login_popup_remove" Visibility="Collapsed"/>
<ScrollViewer Name="scrollview" VerticalScrollBarVisibility="Visible" Margin="0,0,0,0" Foreground="Black">
<StackPanel>
<TextBlock x:Name="NTitelComment" Text="{Binding}" TextWrapping="Wrap" FontSize="25" Margin="10,0,10,0" Foreground="#FFE5001b"/>
<Line Stretch="Fill" Stroke="Black" X1="0" X2="1" Y1="0" Y2="0" Margin="10,0,10,0"/>
<TextBlock x:Name="tijdComment" Text="{Binding}" Margin="50,0,10,0" Foreground="Black"/>
<Image Height="20" Width="20" Margin="-380,-20,0,0" Source="/PostDateIcon.png"/>
<ListBox Margin="0,0,0,20" Name="lbComments" VerticalAlignment="Top" />
</StackPanel>
</ScrollViewer>
</Grid>

If you put a border around your ScrollViewer, can you see if it goes outside of the screen maybe? Will it help to set a fixed height of the Grid or ScrollViewer?
Keep in mind the phone has built in scroll, so your ScrollViewer maybe doesn't play well with it.

With so much fixed margins, your layout will be impossible to manage, especially when dealing with differents screen resolutions and especially with negative margins.
Anyway, right now, you have two scrollviewers, as your listbox contains one as well.
You should disable the listbox scrollviewer or it will prevent your page to scroll.
Just change your listbox:
<ListBox
Margin="0,0,0,20"
ScrollViewer.VerticalScrollBarVisibility="Disabled"
Name="lbComments"
VerticalAlignment="Top" />
It will disable it's scrollviewer and allow it to scroll with the rest of the page.

WPF Button with multiple text elements for 10 foot gui

I am trying to create buttons for a 10-foot GUI using WPF. Each button requires a little more data than just a single text string and an image, maybe 2-3 strings located in different positions and some imagery.
I have tried
<Button Height="52" HorizontalAlignment="Stretch" Name="button1" Width="407">
<Button.Content>
<DockPanel LastChildFill="True" HorizontalAlignment="Stretch">
<TextBlock Name="textBloczk2" Text="ABC" TextAlignment="Left" DockPanel.Dock="Left"/>
<TextBlock Name="textBlxock1" Text="CDE" TextAlignment="Right" DockPanel.Dock="Right"/>
</DockPanel>
</Button.Content>
</Button>
But no matter which inner container I use, the button seems to disregard the layout from the DockPanel and the combined text ends up in the middle of the button. Am I doing something wrong or should I be using a different outer container ?

The problem seems to be that the DockPanel's width is so small that the Right and Left panels are the same width as your TextBlocks.
This seems to work as expected (setting the width of the DockPanel):
<Button Height="52" HorizontalAlignment="Stretch" Name="button1" Width="407">
<Button.Content>
<DockPanel LastChildFill="True" Width="300">
<TextBlock Name="textBloczk1" Text="Left" DockPanel.Dock="Left" />
<TextBlock Name="textBlxock2" Text="Right" DockPanel.Dock="Right" />
<TextBlock Name="textBlxock3" Text="Top" DockPanel.Dock="Top" />
<TextBlock Name="textBlxock4" Text="Bottom" DockPanel.Dock="Bottom" />
</DockPanel>
</Button.Content>
</Button>

Try to add "HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" to your button. This way dockpanel will occupy all space inside the button.

Silverlight TextBlockcutting off text?

I have the following setup
<grid>
<StackPanel>
<ListBox>
<TextBlock> ->Text you see getting cutt off<-
I have tried both just doing listbox.Add(String) and dynamically creating a TextBlock, assigning it text and then adding it to the listbox. Both produce identical results.
The image shows the listbox scrolled down half wayish. It appears the listbox has the correct height but the text inside hits some kind of limit.
UPDATE I changed the listbox to a scroll viewer and also hardcoded the Textblock in. Still same exact results
<Grid x:Name="theGrid" Grid.Row="1" Margin="12,0,10,0">
<StackPanel x:Name="TitlePanel" Grid.Row="0">
<TextBlock Text="Networking Tools" Style="{StaticResource PhoneTextNormalStyle}" Margin="12,0"/>
<StackPanel x:Name="stack">
<TextBlock x:Name="inputIndicator" Margin="12,0,0,0">
<Run Text="Enter IP OR Domain"/>
</TextBlock>
<telerikPrimitives:RadTextBox x:Name="input" Text="google.com" HorizontalAlignment="Left" TextWrapping="Wrap" VerticalAlignment="Top" Grid.Row="1" Height="84" Width="458"/>
<telerikInput:RadListPicker SelectionChanged="picker_SelectionChanged" x:Name="picker" HorizontalAlignment="Left" VerticalAlignment="Top" Width="436"/>
<Button Click="Button_Click" Content="Go" HorizontalAlignment="Left" VerticalAlignment="Top" Width="456"/>
<ScrollViewer HorizontalAlignment="Left" Height="392" Width="Auto" x:Name="list" VerticalAlignment="Top">
<TextBlock Name="content" Height="Auto" Width="Auto"/>
</ScrollViewer>
</StackPanel>
<UI:AdControl ApplicationId="test_client" AdUnitId="Image480_80" Height="80" Width="480"/>
</StackPanel>
<telerikPrimitives:RadBusyIndicator Margin="0,0,0,0" Height="106" Width="116" AnimationStyle="AnimationStyle1" x:Name="busyIndi" />
</Grid>

UI elements in Windows Phone 7 have a maximum renderable height and width of 2048 pixels. Any content that is larger than that gets clipped. The limit is only slightly higher for Windows Phone 8.
You did not mention how much text you are trying to show, but if it is very long, you could be hitting that limit.
There are a few ways you could handle this:
1) Break the text into smaller chunks and add individual TextBlocks to your StackPanel for each chunk.
2) Create a custom control that does the above for you, like this one: http://blogs.msdn.com/b/priozersk/archive/2010/09/08/creating-scrollable-textblock-for-wp7.aspx
3) Use a WebBrowser control instead of a TextBlock, and use its NavigateToString method to put your text in there.

Unable to get to "ScrollStates" in ScrollViewer Control

I'm having a lot of trouble trying to get this working, and was hoping someone could help.
I have a ScrollViewer in my WindowsPhone app, and I'm trying to emulate a similar control to the "Date/Time Chooser" that you'd see in the native Calendar app. So my ScrollViewer contains a StackPanel with multiple square Canvases with rectangles and TextBlocks. My intent is to watch the "ScrollStates", and when the VisualState changes to "NotScrolling", I'd then check the VerticalOffset of the ScrollViewer and animate a slide to the nearest "snap-to" position (ie. aligning the square to the correct/middle position).
<ScrollViewer Name="sv" Width="100" VerticalScrollBarVisibility="Hidden" HorizontalScrollBarVisibility="Disabled" Loaded="ScrollViewer_Loaded">
<StackPanel>
<Canvas MaxWidth="77" MaxHeight="80" MinWidth="80" MinHeight="80" Margin="3">
<Rectangle Stroke="{StaticResource PhoneForegroundBrush}" StrokeThickness="3" Width="80" Height="80" />
<TextBlock Text="1" FontSize="36" FontWeight="Bold" TextAlignment="Center" HorizontalAlignment="Center" Width="70" Canvas.Left="6" Canvas.Top="14" LineHeight="48" />
</Canvas>
<Canvas MaxWidth="77" MaxHeight="80" MinWidth="80" MinHeight="80" Margin="3">
<Rectangle Stroke="{StaticResource PhoneForegroundBrush}" StrokeThickness="3" Width="80" Height="80" />
<TextBlock Text="2" FontSize="36" FontWeight="Bold" TextAlignment="Center" HorizontalAlignment="Center" Width="70" Canvas.Left="6" Canvas.Top="14" LineHeight="48" />
</Canvas>
<Canvas MaxWidth="77" MaxHeight="80" MinWidth="80" MinHeight="80" Margin="3">
<Rectangle Stroke="{StaticResource PhoneForegroundBrush}" StrokeThickness="3" Width="80" Height="80" />
<TextBlock Text="3" FontSize="36" FontWeight="Bold" TextAlignment="Center" HorizontalAlignment="Center" Width="70" Canvas.Left="6" Canvas.Top="14" LineHeight="48" />
</Canvas>
...
</StackPanel>
</ScrollViewer>
I've been looking at various examples that hook into the VisualStates, like http://blogs.msdn.com/b/ptorr/archive/2010/07/23/how-to-detect-when-a-list-is-scrolling-or-not.aspx ; http://developingfor.net/2009/02/16/fun-with-the-wpf-scrollviewer/ ; http://blogs.msdn.com/b/slmperf/archive/2011/06/30/windows-phone-mango-change-listbox-how-to-detect-compression-end-of-scroll-states.aspx ... all seem to have similar code to this:
// Visual States are always on the first child of the control template
FrameworkElement element = VisualTreeHelper.GetChild(sv, 0) as FrameworkElement;
... which then goes on to seek out VisualStateGroup group = FindVisualState(element, "ScrollStates");, from which they can hook an Event to when it changes.
However... whenever I try doing the VisualTreeHelper.GetChild(sv,0) as FrameworkElement, the app crashes with an exception of type 'System.ArgumentOutOfRangeException'. If I output VisualTreeHelper.GetChildrenCount(sv), it is always "0". How is it seemingly working for everyone else? 8)
Any help would be greatly appreciated. Thanks!
(As an alternative, has anyone made this kind of "Select Box" already in a reusable control I could use instead of trying to reinvent it?)

Did you wait till the scrollviewer's Loaded event fires before trying to get the scrollviewer children??