Develop Reference

Change the button style in Expander wpf

How can I change the style of this button? I tried to use Style from the internet, but I got an error every time. I attach 2 screenshots, the original one and how it should look.
The original version
As it should be in the end
<Expander Header="1">
<Border Margin="50,0,0,0">
<StackPanel>
<TextBlock Text="6456567"/>
<TextBlock Text="6456567"/>
<Button Content="111"/>
</StackPanel>
</Border>
</Expander>

Add Buttons and a Textblock With Each Binded Image

I'm developing an UWP app and i'm trying to add two buttons and a textblock for each image that binded.
I'm binding the images in XAML like this; (Updated with the full code)
<GridView Name="display"
Margin="30,100,30,5"
Foreground="#FFFFFF"
IsItemClickEnabled="True"
ItemClick="display_ItemClick"
ItemsSource="{Binding}">
<GridView.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Vertical">
<Image Width="240"
Height="240"
Source="{Binding Path=Image}" />
<StackPanel Name="buttonPanel"
Orientation="Horizontal"
Margin="0,-45,10,0"
HorizontalAlignment="Center">
<Button Name="button_minus"
Content="-"
Width="40"
Height="30"
Click="eksi_click"
FontWeight="Bold">
<Button.Background>
<ImageBrush ImageSource="Assets/btn2.png" Stretch="Fill" />
</Button.Background>
</Button>
<Border Background="White" CornerRadius="10" Height="30">
<TextBlock x:Name="popupNumber"
Width="50"
Height="25"
Margin="0,6,0,0"
Text="{Binding Path=numberOfCopy}"
TextAlignment="Center">
</TextBlock>
</Border>
<Button Name="button_plus" Content="+" Width="40" Height="30" Click="artı_Click" FontWeight="Bold">
<Button.Background>
<ImageBrush ImageSource="Assets/btn2.png" Stretch="Fill" />
</Button.Background>
</Button>
</StackPanel>
</StackPanel>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
I added a stackpanel that contains the Buton-TextBlock-Button format in the seciton of code that i commented out. When i do this, some buttons are not working and i don't actually know is it the best way to do my task.
When i launch the program, some buttons are not available to click. I can see them in the UI but i can't click them. The most awkward thing is only in a specific area on the UI, buttons are unavailable.
My click events are just fine, i have some binding issues, i am wondering is it the proper way to to something like that. Is it the way i am using causes the binding problem?
In in each TextBlock the values should be different for each image and i can't access buttons and textblocks in .cs file because they are in DataTemplate. So i might be doing this in a wrong way.
So do you have any solutions for adding buttons and textblocks for each binded image in Datatemplate? I'm not sure my way is the best way.
Any help would be greatly appreciated.
Thanks.

How to create a floating button in a WPF

I am trying to create a floating button in my WPF application. Currently, I have the following:
<Grid>
<Button Style="{DynamicResource MetroCircleButtonStyle}" Background="#E0E010" Width="50" Height="50" Name="testBtn" Click="testBtn_Click" Margin="374,184,93,35">
<Rectangle Height="20" Width="20" RenderTransformOrigin="0.47,0.456">
<Rectangle.Fill>
<VisualBrush Visual="{StaticResource appbar_add}" />
</Rectangle.Fill>
</Rectangle>
</Button>
<ListBox Width="200" Height="200" Name="lbox1" BorderBrush="Black" BorderThickness="5">
<Grid Width="175">
<ScrollViewer CanContentScroll="False" VerticalScrollBarVisibility="Auto" Margin="107,0,0,0"></ScrollViewer>
</Grid>
</ListBox>
</Grid>
which has a list box with a scroll viewer and a button outside the list box. When I click the button it prints "Hello World" in the list box. I would like to add the button inside the list box and as I scroll down inside the list box have the button be floating. Is there any way to do this?
Note: I am a complete beginner when it comes to WPF.
EDIT: Here is essentially what I want:

So going off of #omarmallat's comment, the way to do this is
<Button x:Name="addRowButton"
Width="50"
Height="50"
Margin="1275,330,25,25"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Background="#2EFF00" />
I had a margin so the button wasn't directly in the corner and provided a little but of space. Make sure the button tag is inside your grid tag!

Open popup at the location of the button clicked

I am trying to create a popup that opens similar to the window preview option in Windows 8 taskbar. Basically, when I click or hover on a button, it opens a popup with basic information just above the button. Here is an example.
Right now, I am able to open the popup at either the extreme left or extreme right side of the page, using the code below.
<Frame x:Name="PopUpFrame" HorizontalAlignment="Left" Visibility="Hidden" Height="400" Margin="10,10,0,0" Grid.Row="1" VerticalAlignment="Bottom" Width="400" Source="/BasicApp;component/StandingOrderPopUp.xaml" NavigationUIVisibility="Hidden"/>
I have 3 different buttons in the button bar, so I cannot set the fixed margin. I am trying to set the same in code but I am unable to get the absolute position and convert it to margin property. I am not sure, if there is a better solution either.
Edit:
Tried using popup but it doesn't open on button click.
<Popup x:Name="PopUpFrame" Placement="Top" PlacementTarget="{Binding ElementName=StandingOrderButton}" Width="400" Height="400">
<DockPanel Background="#770081a7">
<Canvas DockPanel.Dock="Bottom" x:Name="PopupButtonBar" Height="50" VerticalAlignment="Bottom">
<Button Height="30" Width="125" HorizontalAlignment="Right" VerticalAlignment="Center" Canvas.Top="10" Content="CLOSE" Foreground="White" Background="#ff0081a7" BorderBrush="White" FontFamily="Trebuchet MS" Canvas.Left="10" />
</Canvas>
<Label Margin="5,0,0,0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" DockPanel.Dock="Top" Content="STANDING ORDERS" Foreground="#ffffffff"></Label>
<Grid DockPanel.Dock="Top">
<Border BorderThickness="2" BorderBrush="#FFff7a00"></Border>
<RichTextBox Margin="2" Foreground="#FF0081a7" FontFamily="Trebuchet MS" IsEnabled="False"/>
</Grid>
</DockPanel>
</Popup>
And here is the event handler.
Private Sub StandingOrder_Click(sender As Object, e As RoutedEventArgs)
PopUpFrame.Visibility = Windows.Visibility.Visible
End Sub
Edit:
Never mind. I am an idiot. Instead of setting IsOpen property, I set the visibility. :(
It works perfectly, although, I had to copy the whole design from the separate page to this one. Still better than nothing. Only problem now is if I click on something else, I will have to write code to make sure popup is closed.

You can use a Popup control, coupled with it's Placement property to display your popup based on the current location of your buttons.
<Popup Placement="Top" PlacementTarget="{Binding ElementName=yourButton}" ... />
Inside your Popup, you can place your UserControl or any content element which will act as the popup's content.
See here for further information on popup placements, and here for a tutorial on WPF Popup controls.

Think about using ContextMenu, and set it's content you whatever you want. Thats is the solution for you.

This is how i defined one of my popups:
<Popup x:Name="btnPowerPopup" Placement="Mouse" StaysOpen="False">
....
</Popup>
you can user from the code behind on a button click or something :
btnPowerPopup.IsOpen = true;
and when the job is done:
btnPowerPopup.IsOpen = false;
But StaysOpen="False" let's you close the PopUp when clicking somewhere else.

WPF - set focus on textbox

In my WPF application I have many text boxes on one page. I want to set focus on the first text box. I've Googled it and tried different solutions.
XAML Code :
<StackPanel Width="350" HorizontalAlignment="Left" >
<TextBlock x:Name="CustNamelbl" Text="C U S T O M E R N A M E"
Style="{StaticResource LightBoldTxtblkStyle }"/>
<Grid Height="35">
<TextBox x:Name="CustName" Style="{StaticResource Txtbox}"
LostFocus="CustName_LostFocus_1" TabIndex="1"
CommandManager.PreviewExecuted="CustName_PreviewExecuted"
ContextMenu="{x:Null}" PreviewTextInput="CustName_PreviewTextInput"
Margin="0,0,0,0" GotFocus="CustName_GotFocus"/>
<Rectangle Fill="White" Height="2" Opacity="0.2"
VerticalAlignment="Bottom"></Rectangle>
</Grid>
</StackPanel>
C# Code :
CustName.Focus();
Keyboard.Focus(CustName);
Using this code I am getting Focus on that TextBox. I'm also able to open system keyboard. However, I am not able to type anything in that TextBox. Also, that focused cursor is not a blinking cursor, but just a steady cursor.

Give your TextBox a name and then you can call in your Window-Tag
FocusManager.FocusedElement="{Binding ElementName=YOURTBNAME}"