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C#/.xaml Having problem with WPF pages, grid vertical expansion

So here's my problem, when I expand the main window the pages presenter frame seems to expand too but only horizontaly. (see photo #1) The 5 buttons on the bottom stay at the original resolution position verticaly but expand horizontaly, I've put them between stars related columns and rows. It worked well for my wlecome pages an this methos seems to work horizontaly. I'm wonderind if the problem comes from previoulsy setuped proprieties. Problem is related to fifthline but can be post problems.
Images
====================================
Original size see 2 border buttons
Expanded window
Grid setup
Expand working on homepage *Grid setup
====================================
<Border Padding="1">
<StackPanel>
<!---FirstLine-->
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="445"/>
<ColumnDefinition Width="365"/>
<ColumnDefinition Width="390"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="28"/>
</Grid.RowDefinitions>
<TextBlock Text="Prénom" Margin="30,5,165,0" Grid.Column="0" FontWeight="Black"/>
<TextBox Name="ClientPage_BoxPrenom" Text="Jean" Margin="100,-1,5,1" Padding="0,5" FontSize="12"/>
<TextBlock Text="Nom" Margin="5,4,245,1" Grid.Column="1" FontWeight="Black"/>
<TextBox Name="ClientPage_BoxNom" Text="Dujardins" Margin="60,-1,0,1" Grid.Column="1" Padding="0,5"/>
</Grid>
<!---SecondLine-->
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="433"/>
<ColumnDefinition Width="472"/>
<ColumnDefinition Width="275"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="46"/>
</Grid.RowDefinitions>
<TextBlock Text="Ville" Margin="30,20,0,0" Grid.Column="0" FontWeight="Black"/>
<ComboBox Name="ClientPage_ComboVille" Margin="100,20,0,0" Padding="0,5" FontSize="12"/>
<CheckBox Name="ClientPage_CehckResponsable" Content="Responsable" Margin="10,25,361,0" Grid.Column="1" FontWeight="Medium"/>
</Grid>
<!---ThirdLine-->
<Grid Height="79">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="393"/>
<ColumnDefinition Width="787"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="74"/>
</Grid.RowDefinitions>
<TextBlock Text="Membre depuis:" Margin="30,50,0,0" Grid.Column="0"/>
<DatePicker Name="ClientPage_DatepickDatedebut" Text="Membre depuis:" Margin="130,50,770,0" Grid.ColumnSpan="2"/>
</Grid>
<!---FourthLine-->
<Grid Height="191">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="217"/>
<ColumnDefinition Width="373"/>
<ColumnDefinition Width="590"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="191"/>
</Grid.RowDefinitions>
<GroupBox Name="ClientPage_GroupExp" Header="Années d'expériences" Margin="14,12,6,8" Grid.Column="0">
<StackPanel Margin="0,0,-2,0">
<RadioButton Content="Moins d'un an" Margin="50,10,0,10"/>
<RadioButton Content="1 à 4 ans" Margin="50,10,0,10"/>
<RadioButton Content="5 à 9 ans" Margin="50,10,0,10"/>
<RadioButton Content="10 ans et plus" Margin="50,10,0,10"/>
</StackPanel>
</GroupBox>
<ListBox Name="ClientPage_List" Margin="26,22,144,8" Grid.Column="1"/>
<Button x:Name="ClientPage_Buttonnouveau_Copy1" Content="OriginalFrame
Top right" Grid.Column="2" Margin="471,-150,-1,287" Click="ClientPage_Buttonnouveau_Copy1_Click" />
<Button x:Name="ClientPage_Buttonnouveau_Copy" Content="OriginalFrame
Bottom Left" Margin="3,617,94,-480" Click="ClientPage_Buttonnouveau_Copy1_Click" />
<!---FifthLine-->
</Grid>
<Grid Height="484">
<Grid.RowDefinitions>
<RowDefinition Height="149*"/>
<RowDefinition Height="227*"/>
<RowDefinition Height="45"/>
<RowDefinition Height="63*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="120"/>
<ColumnDefinition Width="433*"/>
<ColumnDefinition Width="251*"/>
<ColumnDefinition Width="65"/>
<ColumnDefinition Width="64"/>
<ColumnDefinition Width="15"/>
<ColumnDefinition Width="120"/>
<ColumnDefinition Width="120"/>
</Grid.ColumnDefinitions>
<Button x:Name="ClientPage_Buttoneffacer" Content="Effacer" Grid.Row="2" Grid.Column="0" Margin="0,0,2,4" IsEnabled="False"/>
<Button x:Name="ClientPage_Buttonprecedent" Content="<--" Grid.Row="2" Grid.Column="3" Margin="0,0,2,4" />
<Button x:Name="ClientPage_Buttonesuivant" Content="-->" Grid.Row="2" Grid.Column="4" Margin="0,0,1,4" />
<Button x:Name="ClientPage_Buttonajouter" Content="Ajouter" Grid.Row="2" Grid.Column="6" Margin="0,0,2,4" />
<Button x:Name="ClientPage_Buttonnouveau" Content="Nouveau" Grid.Row="2" Grid.Column="7" Margin="0,0,0,4" />
</Grid>
</StackPanel>
</Border>

The main problem you have is that you're using a StackPanel for your root layout panel. This is preventing your layout from expanding vertically.
You might want to consider using a Grid or a DockPanel instead.

Is there a way to plot OXYplot graph in custom area in WPF window?

I want to put several graphs in one WPF window using OXYplot library, so there will be some WPF components (like buttons) and some rectangles with graphs. It there a way to do it? In all examples the OXYplot graph occupies the whole WPF window.
I tried to put it inside a rectangle like this, but got an error "The type 'Rectangle' does not support direct content"
<Rectangle Fill="#FFF4F4F5" HorizontalAlignment="Left" Height="100" Margin="932,547,0,0" Stroke="Black" VerticalAlignment="Top" Width="100">
<oxy:PlotView Model="{Binding Model}"/>
</Rectangle>

Put it in a Panel or decorate it with a a Border:
<Border Background="Yellow" BorderBrush="Black" BorderThickness="1" Padding="10">
<oxy:PlotView Model="{Binding Model}"/>
</Border>
A PlotView is just a custom Control that you can use in your layout as you would use any other control in WPF.

To keep it simple, you could use Grid as well, to arrange multiple PlotView and buttons in desired layout.
<Grid Margin="10">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid Grid.Column="0" Grid.Row="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="3*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<oxy:PlotView Height="500" Width="500" Model="{Binding GraphModel1}"/>
<Button Grid.Column="1" Content="Click"/>
</Grid>
<Grid Grid.Column="1" Grid.Row="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="3*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<oxy:PlotView Height="500" Width="500" Model="{Binding GraphModel2}"/>
<Button Grid.Column="1" Content="Click"/>
</Grid>
<Grid Grid.Column="1" Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="3*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<oxy:PlotView Height="500" Width="500" Model="{Binding GraphModel3}"/>
<Button Grid.Column="1" Content="Click"/>
</Grid>
<Grid Grid.Column="0" Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="3*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<oxy:PlotView Height="500" Width="500" Model="{Binding GraphModel4}"/>
<Button Grid.Column="1" Content="Click"/>
</Grid>
</Grid>

Select center control/column

I have a grid with multiple controls and I want to choose which of these controls (or which of the grid columns) will be in the center, and then have the other columns/controls just placed adjacent to it. How would I do that?

Update:
The following pattern:
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="MainControl's height"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="MainControl's width"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
will always force MainControl to be centered, as long as other controls will be defined in the * parts. In other words if position [1,1] in the above Grid contains your MainControl, you can define different Grids with different row/column definitions for positions [0,0], [0,1], ..., [2,2] to wrap more controls with custom size in custom locations.
For example this xaml:
<Window Title="MainWindow" Height="600" Width="800" >
<Grid x:Name="myGrid">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="200"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid Grid.Row="0" Grid.Column="0">
<Grid.RowDefinitions>
<RowDefinition Height="40"/>
<RowDefinition Height="50"/>
<RowDefinition Height="80"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="70"/>
<ColumnDefinition Width="150"/>
<ColumnDefinition Width="30"/>
</Grid.ColumnDefinitions>
<Button Grid.Row="0" Grid.Column="0" Content="0,0"/>
<Button Grid.Row="0" Grid.Column="1" Content="0,1"/>
<Button Grid.Row="1" Grid.Column="1" Content="1,1"/>
<Button Grid.Row="2" Grid.Column="2" Content="2,2"/>
</Grid>
<Button Background="LightBlue" Grid.Row="1" Grid.Column="1" Content="1,1"/>
<Grid Grid.Row="2" Grid.Column="2">
<Grid.RowDefinitions>
<RowDefinition Height="80"/>
<RowDefinition Height="35"/>
<RowDefinition Height="30"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="90"/>
<ColumnDefinition Width="50"/>
</Grid.ColumnDefinitions>
<Button Grid.Row="0" Grid.Column="0" Content="0,0"/>
<Button Grid.Row="1" Grid.Column="0" Content="1,0"/>
<Button Grid.Row="1" Grid.Column="1" Content="1,1"/>
<Button Grid.Row="2" Grid.Column="0" Content="2,0"/>
<Button Grid.Row="2" Grid.Column="2" Content="2,2"/>
</Grid>
</Grid>
</Window>
Will locate the controls this way:

What are you trying to achieve in terms of layout? Your grid strategy will determine how the whole layout behaves, especially if you expect it to scale in regards to the window size. If you want the layout to react to the window size, then you use "Auto" and "Star sizing" strategies. If you actually don't care about resizing and you expect a fixed layout, then you can share grid sizes across columns.
Scenario 1-
If you are trying to purely achieve a middle column which contains objects of unknown size, and this column must be perfectly centered, then you need to buffer this middle column with a left and right column, as per Bahman_Aries' example.
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
</Grid>
The result from this is that items placed in the middle column will consume as much width as they need (the desired render width), and the two left over columns will split in two the remaining space, because each have a value of 1*. In other words, if your middle column object requests 200 width, and your window has 1000 total width, the left and right columns will both have 400 (800/2).
Note that star sized columns will crop your content when you reduce the window size. This is by design. You could consider wrapping your layouts in ViewBoxes (or the whole grid) if you want your ratios to persist.
Scenario 2-If you are looking for just a grid which lays out content with no regards to scaling, (re: the middle column consumes what it needs, and then the left and right columns grow equally when they have large content) then you can use the SharedSizeScope feature.
<Grid IsSharedSizeScope="True">
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="MyRatio"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="MyRatio"/>
</Grid.ColumnDefinitions>
</Grid>
What this will achieve is that whenever your column 2 grows, it will also propagate its size to column 0, essentially ensuring that your column 1 is always centered.
The main difference from Scenario 1 is that Scenario 2 will have a fixed size according to its child elements, whereas Scenario 1 has a structure which behaves in accordance to its parent container.
Edit: Scenario 1 with an explicit example:
<Grid ShowGridLines="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="4*"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<StackPanel Grid.Row="1" x:Name="TheLeftComponents" Orientation="Horizontal" HorizontalAlignment="Right" >
<Ellipse Height="20" Width="20" Stroke="Black" StrokeThickness="1" ></Ellipse>
</StackPanel>
<Ellipse x:Name="TheMiddleComponent" Grid.Row="1" Grid.Column="1" Height="40" Width="40" Stroke="Black" StrokeThickness="1" ></Ellipse>
<StackPanel Grid.Row="1" Grid.Column="2" x:Name="TheRightComponents" Orientation="Horizontal" HorizontalAlignment="Left" >
<Ellipse Height="20" Width="20" Stroke="Black" StrokeThickness="1" ></Ellipse>
<Ellipse Height="20" Width="20" Stroke="Black" StrokeThickness="1" ></Ellipse>
<Ellipse Height="20" Width="20" Stroke="Black" StrokeThickness="1" ></Ellipse>
<Ellipse Height="20" Width="20" Stroke="Black" StrokeThickness="1" ></Ellipse>
<Ellipse Height="20" Width="20" Stroke="Black" StrokeThickness="1" ></Ellipse>
</StackPanel>
</Grid>

Misaligned button after compilation

I was creating a simple interface for my app. All went well when I prepared the GUI design, I'm using WPF and its XAML implementations. Problem came up after everything compiled very well and the app's running. There's this one button that goes misaligned when the app's running. I looked for the problem and found nothing. Any idea on how to fix this?
Expected result is on the left, the real result is on floating window. The XAML code of the misaligned button is below the floating window.

<Window x:Class="WPFAlignment.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Grid.Resources>
<Style TargetType="Button">
<Setter Property="Margin" Value="3"/>
</Style>
<Style TargetType="TextBlock">
<Setter Property="Margin" Value="3"/>
</Style>
</Grid.Resources>
<Grid Width="500">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="2*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Button Content="LoadFingerPrint"/>
<Button Grid.Column="1" Content="Load File"/>
</Grid>
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBlock Text="File Path:"
HorizontalAlignment="Left"
VerticalAlignment="Center"/>
<TextBlock Grid.Row="1"
Text="Key Size:"
HorizontalAlignment="Left"
VerticalAlignment="Center"/>
<TextBlock Grid.Row="2"
Text="Initial Vector:"
HorizontalAlignment="Left"
VerticalAlignment="Center"/>
<DockPanel LastChildFill="True" Grid.Column="1" Grid.ColumnSpan="3">
<TextBox Margin="2"/>
</DockPanel>
<Grid Grid.Column="1"
Grid.ColumnSpan="3"
Grid.Row="1"
VerticalAlignment="Center">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<CheckBox Content="128bit"
VerticalAlignment="Center"
HorizontalAlignment="Left"/>
<CheckBox Grid.Column="1"
Content="192bit"
VerticalAlignment="Center"
HorizontalAlignment="Left"/>
<CheckBox Grid.Column="2"
Content="256bit"
VerticalAlignment="Center"
HorizontalAlignment="Right"/>
</Grid>
<DockPanel LastChildFill="True"
Grid.Column="1"
Grid.Row="2"
Grid.ColumnSpan="3">
<TextBox Margin="2"/>
</DockPanel>
</Grid>
<Grid Grid.Row="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Button Content="Encrypt"/>
<Button Grid.Column="1"
Content="Decrypt"/>
<Button Grid.Column="2"
Content="Abort"/>
</Grid>
</Grid>
</Grid>
Can you try this and see the alignment? You have all those margins set by hand there.. i think that's the issue.
Basically, for positioning use containers : Grid, DockPanel, StackPanel and so on and to be relative inside them, use Alignments as in the example, VerticalAlignment.
Also, in order to set some common value for many Controls use Styles, like i did with the Margin of the Button.

Silverlight WrapPanel RadTreeView Cut-Off by 10 pixels

Hello and thanks for your help in advance. I have two panels, one with a series of the buttons and a Telerik RadTreeView boxed by a border, and on the right another border encompassing a grid and some other controls. Everything is sized properly as I resize the page etc however for some reason there are about 10 pixels being cut-off and cannot think of why. If it was a page container issue it would affect the border on the right side of the page. So I'm thinking it must have something to do with the RadTreeView or WrapPanel I'm using. (Boiled-down code is right after the image below)
<!-- Code -->
<controls:ViewBase xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:WindowControls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit"
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="3" x:Name="titleTxt" Text="My Title" Style="{StaticResource textBlockHeaderStyle}"/>
<toolkit:WrapPanel Grid.Row="1" Grid.Column="0" HorizontalAlignment="Left" VerticalAlignment="Stretch" MaxWidth="400" Margin="2,2,2,10">
<!-- Some Buttons Here.... -->
<telerik:RadTreeView HorizontalAlignment="Stretch" VerticalAlignment="Stretch" SelectionMode="Single" IsLineEnabled="True"
ItemsOptionListType="None" IsOptionElementsEnabled="True" IsDragDropEnabled="False"
IsRootLinesEnabled="True" Margin="0,5,0,0" IsTriStateMode="True" FontSize="11" BorderThickness="1" BorderBrush="Black"/>
</toolkit:WrapPanel>
<sdk:GridSplitter Grid.Row="1" Grid.Column="1" HorizontalAlignment="Center" VerticalAlignment="Stretch" Style="{StaticResource gridSplitterStyle}"/>
<Border Grid.Row="1" Grid.Column="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
Background="Transparent" BorderThickness="1" BorderBrush="Black">
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid Grid.Row="0" Grid.Column="0" VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid Grid.Row="0" Grid.Column="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<!-- Some Buttons Here.... -->
</Grid>
<telerik:RadGridView Grid.Row="1" Grid.Column="0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
</Grid>
</Grid>
</Border>
</Grid>

Didn't have time nor the inclination to look into the underlying template/styling for either the RadTreeView or the WrapPanel. I was able to fix the issue and maintain the layout by simply putting the RadTreeView in it's own row and leaving just the buttons and other controls in the wrap panel. Suppose it is simpler this way anyway.
Definitely must be a bug or compatibility issue with these two controls that will probably go unsolved.