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wpf - How to make textbox resize as the window resize

Any property to set to make textbox to resize according to the window size?

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Layout in WPF is heavily influenced by the parent container. For example, if you are creating a form with labels and input fields, consider using a Grid panel. Controls in WPF by default resize according to the layout behavior of their parent. Here is an example of a window with two labeled text boxes and two buttons that resize along with the window.

<Window>
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>

        <Label Content="Contact Name" Grid.Row="0" Grid.Column="0" />
        <TextBox Grid.Row="0" Grid.Column="1" />

        <Label Content="Contact Location" Grid.Row="1" Grid.Column="0" />
        <TextBox Grid.Row="1" Grid.Column="1" />

        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right"
                    VerticalAlignment="Bottom" Grid.Row="2" Grid.Column="1">
            <Button Content="OK" Width="75" Height="24" Margin="3" />
            <Button Content="Cancel" Width="75" Height="24" Margin="3" />
        </StackPanel>

    </Grid>
</Window>

Or if you wanted something similar to the address bar layout of a browser, you could do something like:

<Window>
    <DockPanel>
        <DockPanel DockPanel.Dock="Top">
            <Button Content="Back" DockPanel.Dock="Left" />
            <Button Content="Forward" DockPanel.Dock="Left" />
            <Button Content="Refresh" DockPanel.Dock="Right" />
            <TextBox /> <!-- fill is assumed for last child -->
        <DockPanel>
        <StatusBar DockPanel.Dock="Bottom" />
        <WebBrowser /> <!-- fill is assumed for last child -->
    </DockPanel>
</Window>

Note that in the above example, I nested two DockPanel's. It could also have been achieved with a Grid but the markup would have been much more cluttered. If you are new to WPF, I'd highly suggest playing around with the various panels available to you. Once you learn when to apply a particular panel to a particular layout, it makes WPF much easier to work with.


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