We Keep Coding

WPF How to resize Grid depending on the content inside?

I currently have a reusable overlay, that displays a Button and it's content.
<Border Visibility="{Binding Content, Converter={StaticResource VisibilityConverter}}">
<Border.Background>
<SolidColorBrush Color="White" Opacity="0.8" />
</Border.Background>
<Grid Height="450" Width="450">
<Border Background="NavajoWhite"
CornerRadius="3"
BorderBrush="Black"
BorderThickness="2">
<Grid Margin="10">
<!-- Display Content of selected ViewModel -->
<ContentPresenter Content="{Binding Content}"/>
<!-- Close button -->
<Button Content="X"
FontSize="14"
Width="45"
Height="45"
Command="{Binding Close}"
HorizontalAlignment="Right"
VerticalAlignment="Top" />
</Grid>
</Border>
</Grid>
</Border>
Problem
I have some forms that fit in perfectly to the above XAML
And some forms don't fit
Question
As the height and width are currently set to hard coded values Height: 450 Width: 450 within the XAML, is there a way to auto adjust the grid's height and width depending on it's content inside the Grid? Not to be too small for the content not to be visible and not too large to avoid too much whitespace.

If you do not have a constraint at a higher level (UserControl, Window layout), then split the nested Grid into two lines.
At the bottom line (intended for Buttons), set the autosize.
For the buttons themselves, set the Margin, Padding and their position (aligment).
Perhaps it will be convenient for a row with buttons to first add some kind of general container (StackPanel, UniformGrid, etc.) and add buttons to it.
It is also important: in the layout at a higher level without limiting the maximum size of the main Border to give it some kind of aligment other than «Stretch».
Setting «Stretch » will expand main Border to the maximum possible size.
<Border Background="#80FFFFFF"
Visibility="{Binding Content, Converter={StaticResource VisibilityConverter}}">
<!--<Border.Background>
<SolidColorBrush Color="White" />
</Border.Background>-->
<!--<Grid Height="450" Width="450">-->
<Border Background="NavajoWhite" CornerRadius="3" BorderBrush="Black" BorderThickness="2"
MinHeight="450" MinWidth="450">
<Grid Margin="10">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<!--Display Content of selected ViewModel-->
<ContentPresenter Content="{Binding Content}" />
<!--Close button-->
<StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Right">
<Button Margin="5" Padding="15 5"
Content="Create" FontSize="14" Command="{Binding Close}"/>
<Button Margin="5" Padding="15 5"
Content="X" FontSize="14" Command="{Binding Close}"/>
</StackPanel>
</Grid>
</Border>
<!--</Grid>-->
</Border>

I am trying to scale the background image of a TextBox but it is cropped

I have a TextBox in which I want to add an image as background. The first try is this:
<TextBox Text="{Binding Titulo}" Height="Auto" HorizontalAlignment="Stretch" Margin="5,5,5,5" Name="txtTitulo" VerticalAlignment="Stretch"
TextAlignment="Center"
FontSize="30"
Padding="0,20,0,0"
FontWeight="Heavy"
BorderBrush="red"
BorderThickness="5">
<TextBox.Background>
<ImageBrush ImageSource="../Imagenes/Logo (233x251) - fondo transparente (test).png" AlignmentX="Center" Stretch="None" AlignmentY="Center">
</ImageBrush>
</TextBox.Background>
</TextBox>
The result in this case is this:
If I use this code, that uses transform:
<TextBox Text="{Binding Titulo}" Height="Auto" HorizontalAlignment="Stretch" Margin="5,5,5,5" Name="txtTitulo" VerticalAlignment="Stretch"
TextAlignment="Center"
FontSize="30"
Padding="0,20,0,0"
FontWeight="Heavy"
BorderBrush="red"
BorderThickness="5">
<TextBox.Background>
<ImageBrush ImageSource="../Imagenes/Logo (233x251) - fondo transparente (test).png" AlignmentX="Center" Stretch="None" AlignmentY="Center">
<ImageBrush.Transform>
<ScaleTransform ScaleX="0.5" ScaleY="0.5" CenterX="0" CenterY="0" />
</ImageBrush.Transform>
</ImageBrush>
</TextBox.Background>
</TextBox>
The result is this:
The image that I want to scale is this:
It seems that when it scales, reduce the size, but it crops the image to the size of the TextBox.
What I want to do it is scale the image to see the complete image, but I am not be able to get it.

You need to use Uniform as value for the Stretch property. Like this:
Stretch="Uniform"
So, your code would look like this:
<TextBox Text="{Binding Titulo}" Height="Auto" HorizontalAlignment="Stretch" Margin="5,5,5,5" Name="txtTitulo" VerticalAlignment="Stretch"
TextAlignment="Center"
FontSize="30"
Padding="0,20,0,0"
FontWeight="Heavy"
BorderBrush="red"
BorderThickness="5">
<TextBox.Background>
<ImageBrush ImageSource="../Imagenes/Logo (233x251) - fondo transparente (test).png" AlignmentX="Center" Stretch="Uniform" AlignmentY="Center"/>
</TextBox.Background>
</TextBox>
The Uniform value makes the image fill all the available space while keeping its original scale.

Creation of Button in XAML

I want to create a button having image and label as content in the bottom and notification image on the Upper right corner as in the WhatsApp whenever there is notification.
I can work with Notification logic but can't able to display the image properly as shown in the figure.
I tried with canvas and grid but not able to do that.Any help will be appreciated.I also tried using dock panel and stack panel but was unable to achieve the same.
<Button Name="JobViewer" Tag="JobsIcon" Style="{DynamicResource ButtonAppStyle}" Margin="5" Click="UpdateAction" ToolTip="{Binding RelativeSource={RelativeSource Self }, Path=Name}" >
<Button.Content>
<DockPanel>
<Image DockPanel.ZIndex="2" Source="{StaticResource ContainerZoomWarningLightIcon}" DockPanel.Dock="Top" MaxHeight="40" MaxWidth="40" HorizontalAlignment="Right" ></Image>
<Label Content="JobViewer" DockPanel.Dock="Bottom"></Label>
<Image DockPanel.ZIndex="1" Source="{StaticResource JobsIcon}" ></Image>
</DockPanel>
</Button.Content>
</Button>
the image i get
the image i want

You could specify the <Button> content to give yourself the layout you want.
<Button Width="70" Height="70" Background="Transparent">
<Button.Content>
<Canvas Background="Black">
<Border CornerRadius="8" Height="50" Width="50" Canvas.Left="-25" Canvas.Top="-25"
BorderThickness="0" BorderBrush="Black" Background="#FF47B137">
<Border.Effect>
<DropShadowEffect BlurRadius="3" Opacity=".6" ShadowDepth="2" />
</Border.Effect>
</Border>
<Border CornerRadius="20" Width="20" Height="20" Canvas.Left="10" Canvas.Top="-30"
BorderBrush="White" BorderThickness="2" Background="#FFE40814">
<Border.Effect>
<DropShadowEffect BlurRadius="3" Opacity=".6" ShadowDepth="2" />
</Border.Effect>
</Border>
</Canvas>
</Button.Content>
</Button>

Draw icon overlay image in WPF

I build an image gallery in WPF, main window is simply a grid of images, i want to draw a zoom icon overlay at corner of image, and when user click on this icon, this icon will capture click event instead of image. I'm quite new to WPF, so please show me a good approach for this.
Here is xaml file
<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Image Gallery" Height="350" Width="525" WindowState="Maximized">
<Window.Resources>
<ItemsPanelTemplate x:Key="ImageGalleryItemsPanelTemplate">
<UniformGrid Columns="4" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"></UniformGrid>
</ItemsPanelTemplate>
<DataTemplate x:Key="ListImageDataTemplate">
<Grid HorizontalAlignment="Left" Width="230" Height="230">
<Border Padding="5" Margin="10" BorderBrush="Orange">
<!--Bind Image Path in Image Control-->
<Image Source="{Binding ImagePath}" Stretch="Fill" HorizontalAlignment="Center">
<!--View Large Image on Image Control Tooltip-->
<Image.ToolTip>
<StackPanel Background="Black">
<Image Source="{Binding ImagePath}" Stretch="Fill" HorizontalAlignment="Center" Height="200" Width="200"></Image>
<TextBlock Text="{Binding ImageName}" Foreground="White" Background="Black" Height="20" FontWeight="SemiBold" Margin="15,0,15,0"></TextBlock>
</StackPanel>
</Image.ToolTip>
</Image>
</Border>
</Grid>
</DataTemplate>
</Window.Resources>
<Grid>
<ListBox x:Name="lbImageGallery" Grid.Row="0" Grid.Column="0" ItemsSource="{Binding}" ItemsPanel="{DynamicResource ImageGalleryItemsPanelTemplate}" ItemTemplate="{StaticResource ListImageDataTemplate}">
<ListBox.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black"/>
<GradientStop Color="#FF1E2A2F" Offset="1"/>
</LinearGradientBrush>
</ListBox.Background>
</ListBox>
</Grid>
</Window>

OK, download an icon, and add it to your project (Images\overlay.jpg). The DataTemplate now looks like this
<DataTemplate x:Key="ListImageDataTemplate">
<Grid HorizontalAlignment="Left" Width="230" Height="230">
<Border Padding="5" Margin="10" BorderBrush="Orange">
<Grid>
<!--Bind Image Path in Image Control-->
<Image Source="{Binding ImagePath}" Stretch="Fill" HorizontalAlignment="Center" />
<!--Show the overlay at the Bottom Right corner-->
<StackPanel Background="Black" HorizontalAlignment="Right" VerticalAlignment="Bottom">
<Image Source="Images/overlay.jpg" Stretch="Fill" Height="40" Width="40"></Image>
<!--<TextBlock Text="{Binding ImageName}" Foreground="White" Background="Black" Height="20" FontWeight="SemiBold" />-->
</StackPanel>
</Grid>
</Border>
</Grid>
</DataTemplate>

Why is my popup background transparent?

I'm trying to display a modal dialog with a spinning icon to indicate something happening in the background.
I'm using a Popup for the dialog and I've built a UserControl for the content.
The Popup displays fine, but the background is transparent. The content appears as expected. Ideally, I would like a black background with a white border on the popup.
Here is my UserControl:
<StackPanel VerticalAlignment="Center">
<Image Name="WaitImage" Source="/Resources/Images/Wait/70px/Loader-01.png" Stretch="None"></Image>
<StackPanel Name="MessPanel" Visibility="Collapsed">
<TextBlock Name="MessText" Foreground="White" TextAlignment="Center" TextWrapping="Wrap"></TextBlock>
<Button Name="MessBtn" Content="OK" Click="MessBtn_Click" Width="150"></Button>
</StackPanel>
</StackPanel>

I don't see you defining a background or a border in your xaml. If you want a background and border, you must specify one. I would also recommend doing an "overlay" instead of a popup. An overlay allows you to disable the rest of the page.
<Grid x:Name="Overlay" Visibility="Collapsed">
<Grid Background="{StaticResource PhoneBackgroundBrush}" Opacity=".6"/>
<Border VerticalAlignment="Center" BorderThickness="2"
Background="{StaticResource PhoneBackgroundBrush}" BorderBrush="{StaticResource PhoneForegroundBrush}"
CornerRadius="5" Visibility="Visible" Margin="12">
<StackPanel VerticalAlignment="Center">
<Image Name="WaitImage" Source="/Resources/Images/Wait/70px/Loader-01.png" Stretch="None"/>
<StackPanel Name="MessPanel" Visibility="Collapsed">
<TextBlock Name="MessText" Foreground="White" TextAlignment="Center" TextWrapping="Wrap"/>
<Button Name="MessBtn" Content="OK" Click="MessBtn_Click" Width="150"/>
</StackPanel>
</StackPanel>
</Border>
</Grid>
Show the overlay by setting it's visibility
Overlay.Visibility = Visibility.Visible;

You're not adding a Border or a Background to your StackPanel.
Something like this should work. Depending on your application, you may just want to use real colors, rather than those based on device theme.
<Border BorderThickness="2" BorderBrush="{StaticResource PhoneContrastForegroundBrush}">
<StackPanel Background="{StaticResource PhoneChromeBrush}" VerticalAlignment="Center">
<Image Name="WaitImage" Source="/Resources/Images/Wait/70px/Loader-01.png" Stretch="None"></Image>
<StackPanel Name="MessPanel" Visibility="Collapsed">
<TextBlock Name="MessText" Foreground="White" TextAlignment="Center" TextWrapping="Wrap"></TextBlock>
<Button Name="MessBtn" Content="OK" Click="MessBtn_Click" Width="150"></Button>
</StackPanel>
</StackPanel>
</Border>