I have many nodes and some of them are under the screen's edge. Tho treeview is scrollable, there is no vertical scrollbar on the right. How can i show it?
Did you happen to set the Scrollable property to false? If it is set to true, the control should display the scroll bars.
This "bug" can be replicated, but there is a workaround.
I have found that if you place a TreeView within a component, and mark the Scrollable property as "True", then in run time, the component simply "forgets" that the Scrollable property was marked as true.
The workaround is very simple. To make the TreeView "Scrollable", you must actually add a line of code to make it scrollable, because unfortunately the "bug" in this component is that it forgets.
For example, you must simply add in code something like this
tvTreeView.Scrollable = true;
This workaround fixes the problem, and the tree view will then properly display its Scroll bar(s).
Related
I'm working on a .NET 3.5 desktop application written in C#. It's complex UI is populated dynamically. One part of it is the following group box which is contained in a FlowLayoutPanel and the FlowLayoutPanel is contained in a UserControl. The screenshot is taken from the design view:
When I launch the application, all controls get stretched:
Even I'm fixing the widths of each UserControl's size when Load event of the UserControl is called. The AutoSize property of all of the controls inside the group box is false.
Why is this happening and how to prevent this? I want the UI look exactly like the design view.
EDIT
The best answer to this question didn't solve my problem. Firstly, setting the border style to FixedX creates an undesirable border. Secondly, the inner controls still expanded and they are clipped by the border.
Make AutoScaleMode "Inherit" for all children user control.
You can play in the Anchor property
If you want to keep the Label in its place as the design => use combination : Top, Left
If you want to stretch the control horizontally => use combination : Top, Left , Right
If you want to keep the control to stretch the control in all directions => use combination : Top, Left, Right, Bottom
If you want to keep the control in the Bottom right position ( usually used for buttons) => use combination: Bottom, Right
You might read more about Anchor here and here
Hope this will help you
Set the WrapContents property of your FlowLayoutPanel to true
Please notify my if this worked or not
Check EnableVisualStyles property value set at application level. Set it to true and check.
If your button gets wider when you enlarge its container object, the button must be surely anchored to the left and right borders of the container. Just anchor it to the top or bottom, but not to the left or right borders.
Conversely, if your button gets higher, don't anchor it to the top or bottom.
Is it possible to configure ListView so that it scrolls line by line, instead of scrolling an item at once, which is the default behavior even if the item is multiline?
There is no easy way, to scroll line by line. However you can try this:
By default a ListBox/ListView scrolls "intelligently" one item at a time. This behaviour is provided by a Scrollviewer, by default the Property CanContentScroll is set to true which indicates that the items panel, f.e. a StackPanel is responsible for the scrolling and tries to scroll one item at a time.
To get close to your behaviour you simply set the Attached Property CanContentScroll to false, which enables to scroll pixel per pixel.
<ListView ScrollViewer.CanContentScroll="False" ... />
Also have a look at the link mentioned by Default which explains the interface IScrollInfo. As he mentioned you can find tutorials here. However in my opinion this is way too much effort, for some simple scrolling. I normally use the easy workaround.
I've been tasked at work with creating a UserControl containing a ListView and ComboBox's for sorting the ListView data. Sorting with the Combobox's s the easy part; the part with which I'm having difficulty is implementing a method of scrolling. In the end, the control should have an Excel-like feel to it. However, sometimes the ListView is too tall or wide for where it is placed. Therefore, there two be two scrollbars somewhere on the control. One vertically moves of the ListView only, and the other moves both the ListView and ComboBox filters horizontally.
Please note in the image above that the ComboBox's do adjust themselves according to column width, but the code for that is not enabled at the moment.
What I've tried: In the control, the filter boxes are in their own panel, and the ListView has had its own panel at times. I've tried using various combinations of the HScroll/VScroll and HorizontalScroll/VerticalScroll properties and the native function ShowScrollBar() for all the controls, but nothing has worked. The only way I've gotten scrollbars to appear is by settings AutoScroll (Scrollable for the ListView) to true. Of course, the scroll bars come in pairs and work only on the same control. I also attempted to programmatically move the scroll bars, but I haven't been able to accomplish that, either.
I've got to be doing something wrong, but I'm not sure what it is. Any help is appreciated!
I think I'd go for a different solution.
If you put the ComboBoxes in a AutoSrcoll panel with the same Anchors as the ListView you would give your users the freedom to scroll the two independently.
Yes, a ScrollBar would appear and take space but I would still happily sell that as a feature, not a bug ;-)
As for handling the Scroll event of a ListView: It is hidden and you'll have to subclass it to get access to it. See here
I have a TableLayoutPanel that has several TableLayoutPanels inside it. The amount changes dynamically and will almost always be too many to be able to fit inside the form.I need it to have a scroll bar so I can view the entire component.
I have tried setting the autoscroll property on the main panel to true and docking it and/or setting a maximum size. What the controler does instead, is to try and fit ALL of the Panel inside the form therefore changing the size of its inside components and squeezing them all together instead of creating a scroll bar to scroll through my Panel.
Do you guys know what I might be doing wrong?
Thanks.
Jose
PS: I am using VS 2010
I had the same issue one day and found out that the problem was that I had a "MinimumSize" set to the TableLayoutPanel. That caused the control to keep a minimum height no matter what the Dock and/or Anchor constraints, preventing the AutoScroll feature to work properly. Since that feature is based on a simple check on the Y coordinates of all children controls of a control against that control's height, the scrollbar was not appearing despite the fact the the TableLayoutPanel's child controls were "disapearing" out of sight due to its parent control clip area.
So in other words, check the MinimumSize property of TableLayoutPanel and make sure it's empty.
Maybe this will help.
if it still doesn't work, try put a panel and then put the tableLayoutPanel into that panel. Set to true the autoScroll property of the panel.
I had the same thing happen on my project. All my controls were squished inside the TableLayoutPanel. In my case, I was rendering many of the controls as ColumnStyle.Percent. Switching this to ColumnStyle.Autosize was the fix I needed.
I assume you've set these properties as well, but just in case my TableLayoutPanels also use the following settings:
AutoSize = true;
AutoSizeMode = AutoSizeMode.GrowAndShrink;
AutoScroll = true;
Late answer, but I've been fighting with a complex layout recently and was looking for a solution to get my scrolling working on a screen with far too many fields. Honestly, better design should avoid this problem 99% of the time but sometimes your hands are just tied.
The Problem
The problem seems to be that if you're nested too deeply with multiple grids, groups, and panels they stop reporting properly to parent controls that their contents have overflown the size of the current screen. Actually, the problem is probably that the controls are all set to dock fill and do fit within their parent control, so the top level control doesn't know that the contents of its great-great-great-great-grandchild controls don't fit.
Solution
The trick to fix this seems to be manually forcing the top most panel to scroll at a certain minimum size:
MainPanel.AutoSize = true;
MainPanel.AutoScrollMinSize = new Size(400, 500);
TableLayoutPanel scrolling is full of bugs.
The solution to make it work correctly is here.
sometimes when i want a winforms control to be docked also to the right or bottom of the parent container (usually a UserControl), it's borders are extended way beyond the parent's right or bottom border, so that a part of it is not visible anymore. even though the anchor is set to right.
this only happens when the application is run. as long as i am in the designer view everything looks fine.
all i do is set the "Anchor" property of the control to "Right" for example.
is there a way to avoid this?
in this screenshot you can see the groupbox "Transition" extends way over it's parents extends to the right.
http://www.deviantsart.com/upload/08ffe2f5e7f4d33044840e68e0619152.png
thanks!
Check your parent (UserControl) dock and anchor properties. It appears to me that they have not been set and the UserControl not the items in the UserControl are extending past the borders.
If you use Anchor then you cannot use Dock (and vice versa).
The Anchor and Dock properties are
mutually exclusive. Only one can be
set at a time, and the last one set
takes precedence.
I would check if your controls' parent is actually the control you think it is (it could be its parent :-) ).
Also check Margin property on the control and Padding property on the parent control.
Then check AutoSize property.
I'm not exactly sure what you are saying. Can you reword the sentence?
If you are saying that when you resize the parent window, you want the control to also resize, you are on the right track. You should change the anchor so that the control is anchored to left, top, right, and bottom.
If you want to dock to the right, at a constant height: anchor:=top,right
If you want to dock to the bottom right corner: anchor:=bottom,right
What parent container are you docking in? Is the control inside the parent? If not, then it can resize over the top of it (since its not actually a child).
Perhaps the anchoring is fine, but the problem is in the rendering. Have you tried calling Invalidate() in your container control?
I remember something similar happened to me a long time ago with a custom control. And I resolved it by forcing a repaint of the control.
You probably have to mess around with the z-order of the controls.