This may have been asked, but wasn't able to find the exact question.
Basically I have a WPF Window that I use as a Form. Now for the form, I have a StackPanel that helps keep all the controls and labels in place.
If the user has a smaller resolution display, the window size will be slower so for example 800x600. Some controls get lost.
For this I have added a ScrollViewer wrapped around the StackPanel. But the ScrollViewer never activates. Its probably got something to do with the stackpanel never being limited I suppose. But how can I activate the scroll viewer if the user resizes the window, or the window (when it opens) cannot display all contents properly?
I don't think its necesary to put my xaml here, but if you need it let me know. thanks!
A StackPanel has infinite size (doesn't respect its parent bounds) so you should wrap it in a Grid, which in turn is inside the ScrollViewer.
This may help you
<StackPanel Orientation="Vertical">
<ScrollViewer Name="scrollViewer1">
<DataGrid Name="dgDataList" ItemsSource="{Binding}">
<DataGrid.Columns>
<DataGridTemplateColumn Header="View" IsReadOnly="True">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
//control like textblock, image etc
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
</ScrollViewer>
<ScrollViewer Name="scrollViewer2" >
<DataGrid Name="dgDataList2" ItemsSource="{Binding}" >
<DataGrid.Columns>
<DataGridTemplateColumn Header="View" IsReadOnly="True">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
//control like textblock, image etc
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
</ScrollViewer>
</StackPanel>
I ran into a similar problem where the horizontal scrollbar wasn't being displayed even though there was content on the screen that was hidden.
<Window x:Class="WPFTestingPlatform.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="{Binding SystemParameters.PrimaryScreenHeight}"
Width="{Binding SystemParameters.PrimaryScreenWidth}"
ResizeMode="CanResizeWithGrip">
<ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
<StackPanel Width="1248" Height="600">
<TextBlock HorizontalAlignment="Right">Right</TextBlock>
</StackPanel>
</ScrollViewer>
</Window>
Set the window to have the size you would like for your window. Also set the Stackpanel size so it neatly fits all of your content.
The window size isn't as important as setting the StackPanel height/width otherwise the StackPanel will inherit it's size from the window.
You can resize this window and the scrollbars will appear/disappear (if ResizeMode="CanResizeWithGrip" is set). If you do not set HorizontalScrollBarVisibility, the scrollviewer will not display the horizontal scrollbar regardless of the content size.
Related
I want to make it so that my TabControl is vertically scrollable, but I can't seem to do it. The following sample acts as though there was no scrollviewer at all. I even tried putting the TabControl inside the scrollviewer, or putting it all in a grid and constraining the height of the grid, but nothing works.
<DataTemplate x:Key="tabControlTemplate">
<TabControl ItemsSource="{Binding guiItems}" DisplayMemberPath="Title" Height="Auto" Template="{StaticResource mainTabControlTemplateEx}">
<TabControl.ContentTemplate>
<DataTemplate>
<ScrollViewer Grid.Row="1" VerticalScrollBarVisibility="Auto" CanContentScroll="True">
<StackPanel Margin="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<ItemsControl ItemsSource="{Binding guiItems }" ItemTemplateSelector="{DynamicResource templateSelector}"/>
</StackPanel>
</ScrollViewer>
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</DataTemplate>
The actual problem is not clear from the question.
You are not getting to see scrollviewer and the content inside is clipped? PLease confirm if that is the case.
If the problem is you are getting to see entire content taking up all the available space, and you would like to control that using scroll viewer, then you would need to set 'MaxHeight' property on Scroll Viewer. This would limit the height of your DataTemplate and would make verticall scroll bar visible if the inner content goes beyond the MaxHeight.
Hope that helps.
I have a little problem. I want to put a view inside a stackPanel with a scrollbar. Basically, this is how I try to do this :
<DataTemplate x:Key="FirstTemplate">
<vw:FirstView DataContext="{Binding}"></vw:FirstView>
</DataTemplate>
<DataTemplate x:Key="SecondTemplate">
<vw:SecondView DataContext="{Binding}"></vw:SecondView>
</DataTemplate>
<DataTemplate x:Key="ThirdTemplate">
<vw:ThirdView DataContext="{Binding}"></vw:ThirdView>
</DataTemplate>
<selector:DimensionTemplateSelector x:Key="SomeTemplateSelector"
FirstTemplate="{StaticResource FirstTemplate}"
SecondTemplate="{StaticResource SecondTemplate}"
ThirdTemplate="{StaticResource ThirdTemplate}">
</selector:DimensionTemplateSelector>
<ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">
<StackPanel>
<ContentControl ContentTemplateSelector="{StaticResource SomeTemplateSelector}"
Content="{Binding ASelectedValue}" />
</StackPanel>
</ScrollViewer>
The problem with this code is that I can scroll with the mouse wheel only if my mouse is over the scrollbar zone. If my mouse is inside the stackPanel (so, inside the ScrollViewer tags) but not directly over the scrollbar zone, trying to scroll with the mouse wheel won't result in anything.
I'm very not sure, but it seem like I should define a behaviour to my contentControl so it can handle scrolling. Anyone know how to do that or have a better explanation ?
Thank you
I have a user control with the following XAML:
<ScrollViewer>
<ListBox ItemsSource="{Binding Items}">
<ListBox.ItemTemplate>
<DataTemplate>
<RichTextBox>
<Paragraph>
<Run Text="{Binding}"/>
</Paragraph>
</RichTextBox>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</ScrollViewer>
And code behind:
public partial class MainPage {
public MainPage() {
InitializeComponent();
Items = new ObservableCollection<string>(Enumerable.Range(0, 100).Select(x => "some text"));
DataContext = this;
}
public ObservableCollection<string> Items { get; set; }
}
When this code runs, the vertical scroll bar for the ScrollViewer goes down to the bottom. However, if I remove the binding in the Run in the RichTextBox and hard-code the text:
<Run Text="some text"/>
Now the scroll bar stays at the top (as I would expect).
Is this a bug? If not, what is going on? How can I fix this (note: this is simplified XAML, I need the ScrollViewer because the ListBox is actually in a grid)?
I can´t tell you why the ScrollViewer behaves like that, but i would change the XAML to the following. Then is the scroller at the top, if you use binding or not in the DataTemplate.
XAML:
<ListBox ScrollViewer.VerticalScrollBarVisibility="Auto" ItemsSource="{Binding Items}">
<ListBox.ItemTemplate>
<DataTemplate>
<RichTextBox>
<Paragraph>
<Run Text="{Binding}"/>
</Paragraph>
</RichTextBox>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Make it Fixed width and Height of scrollviewer depends upon the grid row and column size. it help to fixed size in run time. like that
<ScrollViewer VerticalScrollBarVisibility="Auto" VerticalAlignment="Top" HorizontalScrollBarVisibility="Auto" Width="135" Height="463">
<ListBox ItemsSource="{Binding Items}">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical"></StackPanel>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel VerticalAlignment="Top" HorizontalAlignment="Left" Orientation="Vertical">
<RichTextBox>
<Paragraph>
<Run Text="{Binding}"/>
</Paragraph>
</RichTextBox>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I hope its helpful
try setting the listbox's height to auto and make the scrollviewer height fixed. that way, the scrollbars only show when the listbox's height is greater than the scrollviewer's height.
But, looking at the way the objects are defined. You are gonna have one big problem in the future. That is, in SL4, Listboxes take up height and don't give it back. So if you have something that expands inside the listbox (i.e. Accordion items) or allow deleting inside the listbox, the listbox would expand to show all it's items. But once an item is deleted, it will never give back the height. The result would be your scrollbar always shows even when you have nothing more to show at the bottom.
That is completely out of topic but I felt that I should let you know.
I hope I helped, if not now, then for the future.
I finally came up with a solution to this problem. I removed the ScrollViewer from the RichTextBox template.
Set the MaxHeight on the Listbox, this will allow the scrollviewer to only show up when the screen dimensions are too small.
Thank you so much! You just saved me days of pain and suffering... :)
For those (like me) who wonder how to remove the scrollviewer from the rtb template :
Extract the template with blend.
Find the scrollviewer element and replace it with a stackpanel (keep the x:name attribute).
I've read so many solutions to this problem. Every one of them fails to solve my problem. No matter what container I put the control into or what properties I set on the control/container it will not budge.
I have a scroll viewer with a control within. I want it to resize with the window when the user resizes it at runtime. All I need is anchor=top, bottom, left, right. I don't understand why this is so elusive in WPF and why container objects and all kinds of property assignments need to be involved to accomplish what a single property can in Windows Forms. But every solution to this problem still results in my control staying at exactly its design time size as the window is resized at runtime. What's the simple way to get a grip on dynamic control sizing in WPF?
This has caused me grief as well and AlexK helped me see the light. The trick is NOT to set the Height and Width.... Set these to AUTO and use the MARGIN to set the size. Set the HORIZONTALALIGNMENT and VERTICALALIGNMENT to STRETCH and then the anchor functionality works.
The control needs to stretch, that's all there should be to it:
<MyControl HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
Stretch replaces setting anchors to both respective sides.
For help on panels see this overview. Also see the documentation of the layout system.
Most controls automatically stretch, if you have a DataGrid it should stretch too, this example contains a DataGrid and a TextBlock which shows its size:
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<DataGrid Name="grid">
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding Name}" Header="Name"/>
<DataGridTextColumn Binding="{Binding Tag}" Header="Occupation"/>
</DataGrid.Columns>
<FrameworkElement Name="Skeet" Tag="Programmer"/>
<FrameworkElement Name="Gravell" Tag="Programmer"/>
<FrameworkElement Name="Steve" Tag="Coffee Getter"/>
</DataGrid>
<TextBlock Grid.Row="1">
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}, {1}">
<Binding ElementName="grid" Path="ActualWidth"/>
<Binding ElementName="grid" Path="ActualHeight"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</Grid>
</Window>
If you size the window down the DataGrid's ScrollBars should appear.
I assume the control that does not resize is your custom control.
Use DockPanel as a container.
Remove explicit Width and Height properties from your control.
If you work in VS2008, then this causes inconvenience, because you control would collapse to the minimal size when viewed in the designer.
Expressions Blend and starting from VS2010 both respect designer namespace, so you can specify design time only control size.
For that add the following to your control:
<UserControl ...
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignWidth="WWW" d:DesignHeight="HHH">
....
</UserControl>
d:DesignWidth and d:DesignHeight specify the design time width and height.
This question is old but, since I found my here I thought I would throw out my solution. The code below is for a tab control with two tabs and each tab contains a control to fill the tab. I removed the explicitly set width and height, and set the horizontal and vertical alignments to auto on all the controls I wanted to resize. The tab control stretches wit the main window. The controls in the tabs stretch to fill the tabs. The information came from the answers here. I just put up a complete example.
Hope this is useful to someone.
<TabControl HorizontalAlignment="Stretch"
Margin="91,0,0,0" Name="tabControl1"
VerticalAlignment="Stretch" >
<TabItem Header="DataGrid" Name="tabItem1">
<Grid>
<DataGrid AutoGenerateColumns="False"
HorizontalAlignment="Stretch"
Name="dgFTPLog"
VerticalAlignment="Stretch"
Margin="6,6,0,0" />
</Grid>
</TabItem>
<TabItem Header="Log" Name="tabItem2">
<Grid>
<TextBox
HorizontalAlignment="Stretch"
Margin="6,6,0,0" Name="txtLog"
VerticalAlignment="Stretch"
VerticalScrollBarVisibility="Auto"
HorizontalScrollBarVisibility="Auto"
TextChanged="txtLog_TextChanged" />
</Grid>
</TabItem>
</TabControl>
I've came across this issues as well.
and Attempted at binding to parent controls ActualHeight and ActualWidth properties except this only works if you do it via code behind not by XAML.
i.e
XAML
<MyParentControl x:name="parentControl" SizeChanged="parentControl_SizeChanged">
<ChildControl x:name=childControl" />
</MyParentControl>
in the .cs code behind
private void parentControl_SizeChanged(object sender, SizeChangedEventArgs e)
{
childControl.Height = parentControl.ActualHeight;
childControl.Width = parentControl.ActualWidth;
}
I have an ItemsControl in my user control with a scroll viewer around it for when it gets too big (Too big being content is larger than the viewable area of the UserControl). The problem is that the grid that it is all in just keeps expanding so that the scroll viewer never kicks in (unless I specify an exact height for the grid). See code below and thanks in advance.
<UserControl x:Class="BusinessObjectCreationWizard.View.TableSelectionPageView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<GroupBox FontWeight="Bold" Height="300px"
Header="Tables"
Padding="2">
<ScrollViewer>
<ItemsControl FontWeight="Normal"
ItemsSource="{Binding Path=AvailableTables}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<CheckBox Content="{Binding Path=DisplayName}"
IsChecked="{Binding Path=IsSelected}"
Margin="2,3.5" />
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
</GroupBox>
</UserControl>
This user control is loaded here
<Border Background="White" Grid.Column="1" Grid.Row="0">
<HeaderedContentControl Content="{Binding Path=CurrentPage}"
Header="{Binding Path=CurrentPage.DisplayName}" />
</Border>
I would like to not specify the height.
If you remove the Height from your GroupBox (which, as far as I understand, is what you want to do), then it will fill its container, unless there's a panel upstream that imposes its own sizing rules.
I used this simplified version of your XAML. I removed the template and the binding, and hard-coded some items, to make this stand alone; those changes won't affect the way layout is done.
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<GroupBox FontWeight="Bold" Header="Tables" Padding="2">
<ScrollViewer>
<ItemsControl FontWeight="Normal">
<TextBlock>Foo</TextBlock>
<TextBlock>Bar</TextBlock>
<TextBlock>Baz</TextBlock>
</ItemsControl>
</ScrollViewer>
</GroupBox>
</Window>
Run it, and you'll see that the content does indeed size to fit the window, and the scrollbar only enables when the window gets too small to see all three items. I believe this is what you want.
So the problem is most likely one of the parent panels, one you're not showing in your sample XAML. The problem you describe could occur if your GroupBox appears inside a StackPanel:
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<StackPanel>
<GroupBox FontWeight="Bold" Header="Tables" Padding="2">
<ScrollViewer>
<ItemsControl FontWeight="Normal">
<TextBlock>Foo</TextBlock>
<TextBlock>Bar</TextBlock>
<TextBlock>Baz</TextBlock>
</ItemsControl>
</ScrollViewer>
</GroupBox>
</StackPanel>
</Window>
Now the GroupBox appears at the top of the Window, sized to exactly fit its contents. If you shrink the Window enough, the GroupBox will be cut off -- because it's sized to fit its content, not its container. This sounds like the problem you're describing.
The reason is that StackPanel asks its children what their ideal height is (based on their content), and uses that height. Without StackPanel (or something similar), the default is to respect the control's VerticalAlignment, and if that's set to the default value of Stretch, then the control is stretched to fill its parent. This means it won't be taller than its parent, which sounds like what you want.
Solution: remove the StackPanel (or whatever else is causing you problems) and use something else. Depending on what you're trying to accomplish, you might have better luck with a DockPanel or a Grid. Hard to tell without knowing more about your layout.
Edit: Okay, it looks like the problem is indeed the HeaderedContentControl parent -- but not directly. HeaderedContentControl isn't a panel, so it doesn't do any layout of its own (and its descendant, GroupBox, doesn't have this same problem). The problem is its default template -- which includes a StackPanel. The good news is, you're free to use a different template, let's say one with a DockPanel instead:
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<HeaderedContentControl>
<HeaderedContentControl.Style>
<Style TargetType="{x:Type HeaderedContentControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type HeaderedContentControl}">
<DockPanel>
<ContentPresenter ContentSource="Header" DockPanel.Dock="Top"/>
<ContentPresenter/>
</DockPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</HeaderedContentControl.Style>
<GroupBox FontWeight="Bold" Header="Tables" Padding="2">
<ScrollViewer>
<ItemsControl FontWeight="Normal">
<TextBlock>Foo</TextBlock>
<TextBlock>Bar</TextBlock>
<TextBlock>Baz</TextBlock>
</ItemsControl>
</ScrollViewer>
</GroupBox>
</HeaderedContentControl>
</Window>
If you leave off the <HeaderedContentControl.Style> part, this reproduces your problem; but with the style in place, it allows the GroupBox to fill its container, so the ScrollViewer will get a scrollbar when you want it to.
If the previous answer doesn't fix the problem, you could also try binding the Width, Height of your grid to the ActualWidth, ActualHeight of your parent UserControl. Something like:
<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="WpfApplication.UserControl1"
x:Name="UserControl">
<Grid Height="{Binding ElementName=UserControl, Path=ActualHeight}"
Width="{Binding ElementName=UserControl, Path=ActualWidth}" />
In this case you aren't setting an explicit width and height but you are limiting the Grids width/height to the constraints of the UserControl it sits in.
I had the same issue, after reading this response I replaced all StackPanels with Grids in UserControl. It resolved the Scrollbar issue.
Try removing the grid entirely and setting the HorizontalAlignment and VerticalAlignment directly on the GroupBox. If a layoutpanel has only one child, it's often redundant... this migth be true in your case.
If that doesn't work... what's the parent of your grid control?
Why not just use a listbox instead of an itemscontrol, that has a built in scrollviewer.
They are different. If you do not want to have the items selectable, then don't use a ListBox. It is going to be heavier, and will also have the deselect a selection everytime the user clicks on an entry. Just put the ItemsControl in a ScrollViewer
I had the same problema with ListBox, it wasn't expanding and the scroll viewer didn't appear. I solved it as follows:
<UserControl x:Class="TesteView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid MaxHeight="710">
....
....
<StackPanel>
<ListBox MaxHeight="515"
ScrollViewer.HorizontalScrollBarVisibility="Hidden"
ScrollViewer.VerticalScrollBarVisibility="Auto"
ItemsSource="{Binding Path=Teste,Mode=TwoWay}">
....
....
</ListBox>
</StackPanel>
</Grid>
</UserControl>