I've got a problem with my ContextMenu in WPF. The menu is far too wide- it's the width of the items I put on it, plus about fifty-a hundred pixels. So when you open the menu, instead of being a clean list of options or buttons, there's loads of greyspace on each side. How can I fix this?
Edit: Here's my XAML for the menu:
<ContextMenu Padding="0">
<Button Content="Close Tab" Height="23" Name="closetabbutton" Width="75" Margin="0,0,0,0" Click="closetabbutton_Click" />
<TextBox Height="23" Name="renamebox" Width="75" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" ClipToBounds="True" TextChanged="renamebox_TextChanged" />
<Button Content="Close Menu" Height="23" Name="closemenubutton" Width="75" Margin="0,0,0,0" Click="closemenubutton_Click" />
</ContextMenu>
The space is reserved for icons on the left, and input gesture text (e.g. Ctrl+C) on the right. This is by design.
If you wish to change this, you'll have to create your own ContextMenu style. Here's an example of how to do this:
http://www.dev102.com/2008/06/20/how-to-create-a-wpf-custom-context-menu/
Update
Further to my question comment, MenuItems would normally be used where you have used buttons. For example:
<Grid.ContextMenu>
<ContextMenu>
<MenuItem Name="mnuClose" Header="Close tab" InputGestureText="Ctrl+C" />
<MenuItem Name="mnuRename">
<MenuItem.Header>
<TextBox Name="txtRename" Width="100" />
</MenuItem.Header>
</MenuItem>
</ContextMenu>
</Grid.ContextMenu>
Related
Hello,
I have a ListBox.ItemTemplate (containing obviously a DataTemplate) containing a Grid which itself contains a Label.
The Grid has a Grid.ContextMenu. The issue is that the ContextMenu only shows when I right click on the Label. Not outside.
Here is an image to show the problem if you didn't understand (But I am sure you did ;) !)
Here is the code :
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Margin="0,0,0,1">
<Grid.ContextMenu>
<ContextMenu>
<MenuItem CommandParameter="{Binding}" Command="{Binding Source={x:Reference window}, Path=DataContext.DeleteCommand}" Header="Supprimer">
<MenuItem.Icon>
<Image Source="/SchoolTools.Teacher;component/Images/DeleteIcon.png" />
</MenuItem.Icon>
</MenuItem>
</ContextMenu>
</Grid.ContextMenu>
<Label Content="{Binding ClassYear}" Padding="0"
HorizontalAlignment="Center" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
Thanks !
Change the label's HorizontalAlignment to Stretch so that it fills the entire grid cell.
I have a Calendar control made to drop down when needed, but I have these great big greay area on both sides.
I have tried everything I possibly can, but I can't seem to get rid of the grey area on both sides of a calendar.
This is the XAML,
<DockPanel Grid.Row="0" Grid.Column="8" Height="25">
<Menu DockPanel.Dock="Top" Height="25" Width="100">
<MenuItem Header="calender" Height="25" Width="100" >
<Calendar Name="CalenderSelect"
SelectionMode="MultipleRange"
SelectedDatesChanged="Calendar_OnSelectedDatesChanged"
Width="192">
</Calendar>
</MenuItem>
</Menu>
</DockPanel>
My second question, is this the correct way to create a drop down control with a calendar inside it. Or am I doing this wrong, any help would be much appreciated.
First of all, from my point of view to use a menu is a bad idea to create a drop down control. You can do something similar and easier with a button.
However if you want to use the MenuItem control, you have to change the MenuItem.ItemsTemplate in order to reduce margins and remove background color:
<Menu DockPanel.Dock="Top" Height="25" Width="100">
<MenuItem Header="calender" Height="25" Width="100" AutomationProperties.IsColumnHeader="True" >
<MenuItem.Items>
<Calendar Name="CalenderSelect" SelectionMode="MultipleRange" > </Calendar>
</MenuItem.Items>
<MenuItem.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Margin="-35,-5,-50,-5" Background="{x:Null}"></StackPanel>
</ItemsPanelTemplate>
</MenuItem.ItemsPanel>
</MenuItem>
</Menu>
I hope this can help you.
i try to bind the TextBox's text in MenuItem's header to MenuItem's Tag property.
but it won't work correct, always get Null in Tag property.
the code is like below...
<Button x:Name="Button1" Content="Test" HorizontalAlignment="Left" Width="182" Height="34" VerticalAlignment="Top" Margin="160,113,0,0">
<Button.ContextMenu>
<ContextMenu PlacementTarget="{Binding ElementName=Button1}" Placement="Bottom">
<MenuItem Tag="{Binding ElementName=TextBox1, Path=Text}" Click="MessageBox_ShowTag">
<MenuItem.Header>
<Grid Height="25" MinWidth="153">
<Label Content="Label1" Width="86" HorizontalAlignment="Left" VerticalContentAlignment="Center"/>
<TextBox x:Name="TextBox1" VerticalContentAlignment="Center" Margin="91,0,0,0"/>
</Grid>
</MenuItem.Header>
</MenuItem>
</ContextMenu>
</Button.ContextMenu>
</Button>
When click on menuitem, call the MessageBox to show the tag in MenuItem
( MessageBox.Show( ( sender as MenuItem ).Tag?.ToString() ); )
MessageBox has show but content is always empty.
Result:
how can i bind to textbox?
I don't know why you have to bind it like that. An alternative would be to bind to a property (here: MyText) that implements INotifyPropertyChanged, and then pass the DataContext to the menu like this:
<Button x:Name="Button1" Content="Test" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Button.ContextMenu>
<ContextMenu Placement="Bottom" DataContext="{Binding Path=PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}">
<MenuItem>
<MenuItem.Header>
<Grid Height="25" MinWidth="153">
<Label Content="Label1" Width="86" HorizontalAlignment="Left" VerticalContentAlignment="Center"/>
<TextBox Name="TextBox1" Text="{Binding Path=MyText}"
VerticalContentAlignment="Center" Margin="91,0,0,0"/>
</Grid>
</MenuItem.Header>
</MenuItem>
</ContextMenu>
</Button.ContextMenu>
</Button>
And then not relay on Click event to get the TextBox value at all.
If you want to know why your binding doesn't work, its because your MenuItem can't find an object named TextBox1 in its Namescope. If you must (namescopes are a bit tricky), you may make it work by creating a new Namescope for your MenuItem and registering the name for the TextBox:
NameScope.SetNameScope(mi1, new NameScope());
mi1.RegisterName("TextBox1", TextBox1);
where mi1 is the name of your MenuItem, then your binding will work:
<Button x:Name="Button1" Content="Test" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Button.ContextMenu>
<ContextMenu Placement="Bottom">
<MenuItem Tag="{Binding ElementName=TextBox1, Path=Text}" Click="MessageBox_ShowTag" Name="mi1">
<MenuItem.Header>
<Grid Height="25" MinWidth="153">
<Label Content="Label1" Width="86" HorizontalAlignment="Left" VerticalContentAlignment="Center"/>
<TextBox Name="TextBox1" VerticalContentAlignment="Center" Margin="91,0,0,0"/>
</Grid>
</MenuItem.Header>
</MenuItem>
</ContextMenu>
</Button.ContextMenu>
</Button>
Also, avoid x:Name whenever you can. It can cause some nasty memory leaks. Use Name instead.
Like mentioned in the comment also, there could be better solution to actual problem you are trying to solve.
But anyhow if you want solution for your specific problem it can be solved by using x:Reference in place of ElementName like this:
<MenuItem Tag="{Binding Source={x:Reference TextBox1}, Path=Text}"/>
ElementName is not working because VisualTree is different. In case interested read further here - ElementName v/s x:Reference.
Try binding via RelativeSource:
<TextBox x:Name="TextBox1" Text="{Binding Path=Tag, RelativeSource={RelativeSource AncestorType={x:Type MenuItem}}}" VerticalContentAlignment="Center" Margin="91,0,0,0"/>
This is my first attempt at creating an application, so apologies if my questions are misformed or misplaced.
First a question of terminology: when you click on 'file' in a menu bar and a little box appears below with options like 'quit' and 'save,' what's this box called? Is this just called a 'context menu'?
Second: how can I put a drop shadow on this box? I've seriously been tinkering and googling for the longest time with no luck. For some reason the default in visual studio express 2013, at least as I'm using it, seems to be no shadow, which looks pretty odd imo. Here's the relevant XAML:
<Menu x:Name="MenuBar" HorizontalAlignment="Stretch" Height="27" Margin="-20,-36,140.4,0" VerticalAlignment="Top" Width="Auto" Foreground="Black" RenderTransformOrigin="0.5,0" Background="#FFE5E5E5">
<MenuItem x:Name="File" Header="File" Height="27" Width="39" TextOptions.TextHintingMode="Animated" Foreground="#FF323334" BorderThickness="0" BorderBrush="{x:Null}" Margin="1,0,4,4" Padding="6,0">
<MenuItem x:Name="Save" Header="Save" HorizontalAlignment="Left" Width="139.2" Click="Save_Click"/>
<MenuItem Header="Quit" HorizontalAlignment="Left" Width="139.2" Click="MenuItem_Click" Background="{x:Null}" BorderBrush="{x:Null}" UseLayoutRounding="False"/>
</MenuItem>
</Menu>
Thanks in advance for any help!
EDIT: I ended up getting my answer elsewhere.
This is my first attempt at creating an application, so apologies if my questions are misformed or misplaced.
When you click on 'file' in a menu bar and a little box appears below with options like 'quit' and 'save,' how do I put a drop shadow on this box? I've seriously been tinkering and googling for the longest time with no luck. I feel like I've exhausted the options in visual studio and tried various code in my xaml. Here's the relevant XAML:
<Menu x:Name="MenuBar" HorizontalAlignment="Stretch" Height="27" Margin="-20,-36,140.4,0" VerticalAlignment="Top" Width="Auto" Foreground="Black" RenderTransformOrigin="0.5,0" Background="#FFE5E5E5">
<MenuItem x:Name="File" Header="File" Height="27" Width="39" TextOptions.TextHintingMode="Animated" Foreground="#FF323334" BorderThickness="0" BorderBrush="{x:Null}" Margin="1,0,4,4" Padding="6,0">
<MenuItem x:Name="Save" Header="Save" HorizontalAlignment="Left" Width="139.2" Click="Save_Click"/>
<MenuItem Header="Quit" HorizontalAlignment="Left" Width="139.2" Click="MenuItem_Click" Background="{x:Null}" BorderBrush="{x:Null}" UseLayoutRounding="False"/>
</MenuItem>
</Menu>
Thanks in advance for any help!
EDIT: I ended up getting my answer eslewhere
You just need to create your own Template
here's a link on how to ovveride the default MenuItem Style