how to maintain the width of the tabItems should be equal if i open multiple tabItems. know i am not getting this thing. i tried the following code
HorizontalContentAlignment="stretch"
i used the above code but it is not working. but i am getting like this
for tabcontrol i write the following code
<TabControl Name="tabControl1" Margin="175,44,0,0" >
<Grid></Grid>
</TabControl>
tabItems will dynamically adding to the Tabcontrol
TabItem tabitem2 = new TabItem();
Page2 pgobj1 = new Page2();
Frame tabframe1 = new Frame();
tabframe1.Content = pgobj1;
tabitem2.Header = "Tab 2Tab 2Tab 3";
tabitem2.Width = 300;
tabitem2.Content = tabframe1;
tabControl1.Items.Add(tabitem2);
tabitem2.IsSelected = true;
i don't want those spaces in between the tabItems. and they automatically resize if more number of tabs are opened. kindly help me out in this.
After removing the Hardcoded width property
it comes like this
Remove hardcoded width you are setting on TabItem. No need to set that, TabItem will automatically adjust its width base on header content.
tabitem2.Width = 300; // Remove this line
If you want items to come in single line and scroll using ScrollViewer, you need to modify Template of TabControl like mentioned here. I am posting the code from there for the sake of completeness of answer:
<TabControl Name="tabControl1">
<TabControl.Template>
<ControlTemplate TargetType="TabControl">
<StackPanel>
<ScrollViewer HorizontalScrollBarVisibility="Auto"
VerticalScrollBarVisibility="Disabled">
<TabPanel x:Name="HeaderPanel"
Panel.ZIndex ="1"
KeyboardNavigation.TabIndex="1"
Grid.Column="0"
Grid.Row="0"
Margin="2,2,2,0"
IsItemsHost="true"/>
</ScrollViewer>
<ContentPresenter x:Name="PART_SelectedContentHost"
SnapsToDevicePixels="{TemplateBinding
SnapsToDevicePixels}"
Margin="{TemplateBinding Padding}"
ContentSource="SelectedContent"/>
</StackPanel>
</ControlTemplate>
</TabControl.Template>
</TabControl>
Also check out this answer here.
If I understand you correctly, you want that all tab items should have equal width. You can achieve that by wrapping each tab item header inside a Grid with a ColumnDefinition that uses a SharedSizeGroup. Furthermore, you must mark the TabControl like this:
<TabControl x:Name="tabControl1" Grid.IsSharedSizeScope="True">
The following code shows how to set the Header property programmatically:
Grid grid = new Grid();
grid.ColumnDefinitions.Add(new ColumnDefinition
{
SharedSizeGroup = "MySharedSizedGroupName",
Width = new GridLength(1.0, GridUnitType.Auto)
});
grid.Children.Add(new TextBlock{Text="Tab 5"});
tabitem2.Header = grid;
EDIT: And one other point: I think the <Grid></Grid> you have added as a child to the TabControl is unnecessary, because it creates that empty tab on the left side in the first tab row.
Related
I am making an app in WPF that displays an image which can be dragged and zoomed. Bottom, right and upper sides contain some UI elements like buttons and in the center I have a TabControl to which I add TabItems in the code of ViewModel. These TabItems consists of their content (an image) and a header where I have tab buttons. The problem I have is that an image I drag covers the header but not the buttons as you can see on the screenshot. The behavior I expect is to have this image hidden underneath the entire header, not only buttons. It only happens with the bottom side. When I drag the image to the top or right it gets hidden behind the sides like it's supposed to.
Header issue
I tried to change its background, opacity and ZIndex but nothing worked for me.
Here is my code.
XAML:
<TabControl Grid.Row="1" Grid.Column="0" TabStripPlacement="Bottom" Background="LightGray" ItemsSource="{Binding LayoutTabs}"
SelectedIndex="0" SelectedItem="{Binding SelectedTab, Mode=OneWayToSource}"/>
C#:
LayoutTabs = new BindableCollection<TabItem>();
for (int i = 0; i < _content.LayoutImages.Count; i++)
{
DrawingImage drawing = _content.LayoutImages.ElementAt(i);
Image image = new Image() { Source = drawing };
image.MouseMove += OnMouseMove;
var container = new LayoutContainer()
{
Background = Brushes.WhiteSmoke,
Child = image,
Focusable = true,
};
var tabItem = new TabItem()
{
Header = _content.GetLayoutName(i),
Content = container
};
LayoutTabs.Add(tabItem);
}
That behaviour is due to the headerpanels background being set to transparent in the default control template. If you right click the tabcontrol in the Designer window (not xaml editor) and click on Edit Template->Edit a Copy you get a copy of that tempalte and can then modify the headerpanel with your BackgroundColor and if need be increase the Zindex:
[....]
//this is the line to make your changes on:
<TabPanel x:Name="headerPanel" Background="Transparent" Grid.Column="0" IsItemsHost="true" Margin="2,2,2,0" Grid.Row="0" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1"/>
[....]
I am working on a project where I want to add button in content property of TabControl in WPF.
I tried lot many ways but I failed.
This is the code Example :
XAML File
c# File
1. XAML File
<TabControl TabStripPlacement="Left" Name="DynamicTab">
<TabControl.ItemTemplate>
<DataTemplate>
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
</DataTemplate>
</TabControl.ContentTemplate>
2. C# File
foreach(DataContextClass glist in groupsList)
{
TabItem tab = new TabItem();
StackPanel sp = new StackPanel();
tab.Header = glist.ItemGroup;
DynamicTab.Items.Add(tab);
itemsList = itemsDALObj.ItemsGroupWise(glist.ItemGroup);
for(int i =0 ; i<itemsList.Count;i++)
{
Button b = new Button();
b.Name = "Button" + (i + 1);
b.Content = itemsList[i].ItemName;
b.Height = 80;
b.Width = 100;
tab.Content = sp;
sp.Children.Add(b);
}
};
I tried following options:
By adding stackpanel, Grid, Button in <DataTemplate> of <TabControl.ContentTemplate>.
By adding Dynamic Grid and in that Grid I add Dynamic Button.
Many other ways also which I am not able to explain.
You have to replace in XAML instead of <TabControl.ContentTemplate> replace it with <TabControl.DataContext> and that's the solution it takes me hours to find this little mistake.
<TabControl.DataContext>
<DataTemplate>
</DataTemplate>
</TabControl.DataContext>
The above is the change in XAML part.
A TabControl is designed around the idea that the only controls that will be added to it are TabItem controls.
You can in fact, add other controls directly to the parent TabControl object, but when you do, it automatically creates an implicit TabItem anyway to hold those objects.
For instance, if you add two Button controls directly to the TabControl, two implicit TabItem controls are created, one to hold each Button:
<TabControl>
<Button/>
<Button/>
</TabControl>
This works, but is very much the wrong way to go about it.
To properly add content to a TabControl, first create a TabItem. Add your other controls to the TabItem, and then add the TabItem to the TabControl. (You can add the TabItem to the TabControl first if you want, it doesn't really matter)
In XAML:
<TabControl>
<TabItem Header="This is the label for the tab item.">
<Button Content="My Button"/>
</TabItem>
</TabControl>
In code (assuming a pre-existing TabControl):
TabItem ti = new TabItem();
ti.Header = "Tab Header Text";
Button bt = new Button();
bt.Content = "Button Text";
ti.Content = bt;
myTabControl.Items.Add(ti);
A TabControl, like all WPF controls is a container. It can hold multiple objects, but all of those objects are actually TabItem objects. The TabItem control can only hold one object, so if you want it to contain more than just the Button, you have to add a different container to the TabItem first; like a Grid or StackPanel.
I'm using this sample to customize a TabControl:
TabControlStyle - Part Three.zip:
https://web.archive.org/web/20160319001935/http://www.blogs.intuidev.com/file.axd?file=2010%2f2%2fTabControlStyle+-+Part+Three.zip
from url:
https://web.archive.org/web/20160319001935/http://www.blogs.intuidev.com/post/2010/02/10/TabControlStyling_PartThree.aspx
now if you run and select sample 5 (TabControl_5_ScrollableTabPanel) you will see that everything works fine. Opening the popup works also.
However when adding a new tabitem with a custom header and opening the popup on the right makes that the tabitem's header gets reset to a minimum size and the content is lost.
In the sample in TabControl_5_ScrollableTabPanel.xaml I've just added an extra tabitem between the existing Tab 2 and Tab 3:
<TabItem>
<TabItem.Header>
<StackPanel Orientation="Horizontal">
<Rectangle Width="16" Height="16" Fill="Red" />
<TextBlock Text="Test" />
</StackPanel>
</TabItem.Header>
</TabItem>
I've seen that after UIElement.Measure() the DesiredSize is incorrect for this tab with custom header.
In the ScrollableTabPanel I've tried to change the MeasureOverride method so that it does an extra check for the header:
//Loop through all child controls ...
foreach (UIElement uieChild in this.InternalChildren)
{
// test:
TabItem uieChildTabItem = uieChild as TabItem;
if (uieChildTabItem != null && uieChildTabItem.HasHeader && uieChildTabItem.Header != null)
{
UIElement uieChildHeader = uieChildTabItem.Header as UIElement;
if (uieChildHeader != null)
{
uieChildHeader.Measure(availableSize);
resultSize.Width += uieChildHeader.DesiredSize.Width;
}
}
// ...
...but it still doesn't bring the header back to its original size, showing its content.
Does anyone see where it goes wrong and why my solution doesn't seem to work?
Can you try to declare the TabItem as below :
<TabItem Header="TabTest">
<TabItem.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Rectangle Width="16" Height="16" Fill="Red" />
<TextBlock Text="Test" />
</StackPanel>
</DataTemplate>
</TabItem.HeaderTemplate>
</TabItem>
As per this Tab Panel implementation, it directly binds the TabItem's header to the context menu item header in the popup. This creates problem if you trying to give some UI element to tab item header instead of string, and this Tab Panel trying to host same UI element twice in a visual tree. Since it is not allowed , it removed the UI element from TabItem's header and shows only in the menu item's header.
I have a xaml code like this
<Grid>
<... some grid row and column definitions .../>
<ScrollViewer Grid.Column="1" VerticalScrollBarVisibility="Auto">
<TextBlock "some attribute" />
</ScrollViewer>
</Grid>
I don't know how to tie Textblock with Scrollviewer in C#. I want to use Textblock with Scrollviewer.
If you have another idea, please tell me.
Many Thanks for your help. :D
just use the Content Property
var myScrollViewer = new ScrollViewer();
myScrollViewer.Content= new TextBlock();
Edit
or in combination with XAML
XAML
<ScrollViewer Name="myScrollViewer " Grid.Column="1" VerticalScrollBarVisibility="Auto"/>
Code behind
myScrollViewer.Content= new TextBlock(); // or what ever you want to add :-)
In a WPF application I have a textbox. I have set AcceptReturn to true
But I need to make the textbox bigger when the user clicks enter. What I mean is currently when the user clicks on the enter key, the cursor goes to a new line however the text box is still the same height and the above line is now hidden. Can I make the textboxHeight change dynamically depending on it's content?
Thanks
PS: I cannot use textarea I need to stay with the textboxes
I would suggest to keep it a current size and use the vertical scrollbar. But, if you're doing something that really requires it, place your TextBox into a Grid. Set the Grid row height to auto. Set the Height of the TextBox to Auto. Set the VerticalAlignment of the textbox to Stretch. In the code below I left the scrollbar settings in. You can change those how you see fit.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<TextBox Grid.Row="0" x:Name="scriptTextBox" Margin="10" Height="Auto" Width="Auto" FontFamily="Consolas, Courier New"
HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto"
MaxLines="9999" AcceptsReturn="True" AcceptsTab="True" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
Text="{Binding Path=Script, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
/>
</Grid>
You say you need to use Textboxes. Can you at least use an overriden Textbox? This worked pretty well in my testing:
public class AutoHeightTextbox : TextBox {
protected override Size ArrangeOverride(Size arrangeBounds) {
Size unboundSize = new Size(this.Width, double.PositiveInfinity);
Size textSize = base.MeasureOverride(unboundSize);
this.Height = textSize.Height;
return base.ArrangeOverride(arrangeBounds);
}
}