How to responsive tab control in WPF?

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What I want to do is that when I maximize the WPF window the TabControl should also be responsive with the WPF window. But in the following code the TabControl does not become responsive

What I have tried:

this my Xaml code:-

XML

<Window x:Class="Display3DModel.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:helix="http://helix-toolkit.org/wpf"
        xmlns:display3dmodel ="clr-namespace:Display3DModel"
        xmlns:hx="http://helix-toolkit.org/wpf/SharpDX" 
        xmlns:helix1="http://schemas.microsoft.com/netfx/2009/xaml/presentation"
        xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
        WindowStartupLocation="CenterScreen"
        Title="M-Crafter 125" Height="700" Width="900"
        HorizontalAlignment="Left" VerticalAlignment="Top"
        MinHeight="700" MinWidth="887"
        Icon="Resources/123.ico">

    <Window.Resources>
        <display3dmodel:BoundsConverter x:Key="BoundsConverter"></display3dmodel:BoundsConverter>
        <Storyboard x:Key="BlinkAnimation" AutoReverse="True" RepeatBehavior="Forever">
            <DoubleAnimation Storyboard.TargetProperty="(UIElement.Opacity)"
                         From="1.0" To="0.0" Duration="0:0:0.5"/>
        </Storyboard>
    </Window.Resources>
    <Window.Background>
        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="Black"/>
            <GradientStop Color="#FF6F6F6F" Offset="1"/>
        </LinearGradientBrush>
    </Window.Background>

    <Grid RenderTransformOrigin="0.5,0.5" >
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="Auto"/>
        </Grid.ColumnDefinitions>

        <StackPanel  x:Name="optionpanel" Background="#FFB3B3B3" Grid.Row="1" Grid.Column="0" Margin="5">
        </StackPanel>

        <StackPanel x:Name="settingpanel" Background="#FFB3B3B3" Grid.Row="1" Grid.Column="2" Margin="5" Width="300">
        </StackPanel>

        <StackPanel x:Name="footerpanel" Background="#FFB3B3B3" Grid.Row="2" Grid.ColumnSpan="3" Orientation="Vertical">
        </StackPanel>

        <StackPanel x:Name="headerpanel" Background="#143548" Grid.ColumnSpan="3" Grid.Row="0" Orientation="Vertical">
        </StackPanel>

        <StackPanel x:Name="viewerPanel" Background="#b3b3b3" Grid.Row="1" Grid.Column="1" Margin="1,5.2,1,5">
            <TabControl x:Name="viewtab" HorizontalAlignment="Stretch" Height="558" VerticalAlignment="Stretch" Background="#b3b3b3" BorderBrush="#FF123648" BorderThickness="2">
                <TabItem Header="3D View" Margin="0,-2,-11.8,-0.2">
                    <Grid Background="#b3b3b3" Margin="0,0,0.4,1" VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
                        <helix:HelixViewport3D x:Name="viewPort3d" IsViewCubeEdgeClicksEnabled="True" ShowCoordinateSystem="True"  MouseDown="viewPort3d_MouseDown" MouseMove="viewPort3d_MouseMove" Margin="0,0,-2,0" ZoomExtentsWhenLoaded="True" RenderTransformOrigin="0.487,0.498" MouseUp="viewPort3d_MouseUp">
                            <helix:HelixViewport3D.DefaultCamera>
                                <PerspectiveCamera FieldOfView="61" NearPlaneDistance="0.001" Position="10,10,10" LookDirection="0,0,-1" UpDirection="0,1,0" />
                            </helix:HelixViewport3D.DefaultCamera>
                            <helix:SunLight/>
                            <!--<helix:GridLinesVisual3D/>-->
                            <helix:BoundingBoxVisual3D  BoundingBox="{Binding SelectedObject, Converter={StaticResource BoundsConverter}}" Diameter="0.2"/>
                        </helix:HelixViewport3D>
                    </Grid>
                </TabItem>
                <TabItem Header="Layer View" Margin="12.8,-2,-13,0" HorizontalAlignment="Left" Width="73">
                    
                </TabItem>
            </TabControl>
        </StackPanel>

    </Grid>
</Window>

Posted 4-Apr-23 1:57am

Ridhdhi Vaghani

Updated 4-Apr-23 19:04pm

v2

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Graeme_Grant · Accepted Answer · 2023-04-04T01:58:00

Do not use fixed sizes like:

XML

Height="554"

Let the TabControl fit the parent container content area.

UPDATE

I put your XAML (with the helix control removed) in my sample app and made a couple of tweaks and is now responsive, ie: no constraints:

XML

<Grid RenderTransformOrigin="0.5,0.5" >
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
        <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="Auto"/>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="Auto"/>
    </Grid.ColumnDefinitions>

    <StackPanel  x:Name="optionpanel" Background="#FFB3B3B3" Grid.Row="1" Grid.Column="0" Margin="5">
    </StackPanel>

    <StackPanel x:Name="settingpanel" Background="#FFB3B3B3" Grid.Row="1" Grid.Column="2" Margin="5" Width="300">
    </StackPanel>

    <StackPanel x:Name="footerpanel" Background="#FFB3B3B3" Grid.Row="2" Grid.ColumnSpan="3" Orientation="Vertical">
    </StackPanel>

    <StackPanel x:Name="headerpanel" Background="#143548" Grid.ColumnSpan="3" Grid.Row="0" Orientation="Vertical">
    </StackPanel>

    <Border x:Name="viewerPanel" Background="#b3b3b3" Grid.Row="1" Grid.Column="1" Margin="1,5.2,1,5">
        <TabControl x:Name="viewtab" Background="#b3b3b3" BorderBrush="#FF123648" BorderThickness="2">
            <TabItem Header="3D View">
                <Grid Background="#b3b3b3" Margin="0,0,0.4,1">
                    <TextBlock Text="Content1"
                               HorizontalAlignment="Center"
                               VerticalAlignment="Center"/>
                </Grid>
            </TabItem>
            <TabItem Header="Layer View">
                <TextBlock Text="Content2"
                           HorizontalAlignment="Center"
                           VerticalAlignment="Center"/>
            </TabItem>
        </TabControl>
    </Border>

</Grid>

Your main issue was the StackPanel. I changed it to a Border. Other edits were made to remove properties that are not required.