I am trying to hide a ListView's scrollbars and keep it scrollable.
The reason for this is the design. They are very ugly!
When I turn Scrollable to false it will do actually hide the scrollbars which is my 1st goal but the ListView doesn't scroll. So is there a way to hide the scrollbars and keep it scrollable?
I found something here: How to hide the vertical scroll bar in a .NET ListView Control in Details mode but I can't get it working.
Related
So I am making a dark mode option for my application and I want the scrollbar back color to also change color so that it doesn't look out of place. I have tried to search for a solution but so far I have only found code for a scrollbar as in the control. but I need to change the scrollbar of a panel. Does someone happen to know how to do this? Thanks a lot in advance.
I faced the same challenge when I started to work on custom controls that should support the Dark Mode. The problem with Panel control as well as other controls is that their ScrollBars are managed internally by those controls and there is no way to customize them.
My Idea was to create a custom ScrollBar control that supports custom colors and themes, see my answer https://stackoverflow.com/a/73613059/5514131
And in our custom Panel control, we create the custom ScrollBars internally and use the various Panel properties and events to link the custom ScrollBars to our Panel.
With the help of the Panel VerticalScroll and HorizontalScroll properties, we can know whether the default Panel scrollbars are visible or not and their properties to copy to our custom ScrollBars.
With the help of LocationChanged, SizeChanged, and other Panel events and properties we should bind the custom ScrollBars to our Panel and place them on top of the default ones to completely cover them.
I used the OnMouseWheel and OnScroll to update our custom ScrollBars when the Panel is scrolled using the code or mouse wheel.
We should dispose the custom ScrollBars when the Panel is disposed, or its handle is destroyed.
I know this isn't the best approach, but it should work to prevent the default ugly scrollbars from ruining your beautiful Dark Mode.
This workaround can be applied to other controls, I actually used it with TabControls, however, it will be more complex to implement.
Windows Forms Panel control with custom ScrollBars based on the Flat ScrollBar control https://gist.github.com/ahmedosama007/39f8b76e65300e5969110b753fe0a654
I'm making an instant messaging application in C#. The problem that I'm facing right now is that for the contacts list I've made a custom control extendinguserControl, which contains aFlowLayoutPanel`.
That panel will contain a list of userControls. I want to customize the VscrollBar, but no chance (not possible). Instead I have this genius idea to hide the VscrollBar from the FlowLayoutPanel, and make simple buttons (UP and down events). For this everything worked like a charm, but when I tried to hide the VscrollBar by making the property autoScroll = false , the buttons stopped working.
How can I hide the VscrollBar?
If you want to hide the the vertical bar, there are some possible solutions. ..
You could make an event for resize, controls add, controls remove and set all the child controls' width to flowlayoutpanel.width -20
You could add a panel to the flowlayoutpanel and set it to autosize and make the panels may width to flowlayoutpanel.width-20.
You could check if the width of the flowlayoutpanel is bigger than its real width (means vscrollbar appeared) , and resize the children that it'll/ld hide again
and if you are sure that your controls are smaller than the flowlayoutpanel's width, you simply could create a panel which covers the vertical bar. (use .BringToFront() to put it before the flowlayoutpanel's scrollbar)
I hope that I understood and perhaps have solved the problem
I have a control in C# that I want to AutoScroll. But when the scroll bar appears, it overlays part of the control. Is there any way I can make the control resize its contents to accomodate the scroll bar? This isn't a custom control; it's a standard .NET TabPage control. I really don't want to have to wire up a scroll bar manually...
I was able to work around this by adding a Panel control to the control I wanted to scroll, with a 12px right margin to accommodate the scrollbar. Not sure how this will look on high DPI settings, but it can always be tweaked.
I'm writing a custom control that contains a list of items (child controls) that resize horizontally to fit the width of the control. If there are lots of items (or the control is resized so that it is not tall enough vertically) then a vertical scroll bar is necessary; but when the vertical scroll bar appears, the child controls are suddenly too wide, which causes a horizontal scroll bar to appear.
What's the proper way to guarantee that a horizontal scroll bar does not appear when it is not necessary, given that I am controlling the control placement manually (not relying on AnchorStyles)? (Note: I can't control the VScroll property manually because I'm on Compact Framework; and if an item's minimum width is wider than the client area then a horizontal scroll bar will be required legitimately.)
What I did in a similar situation was after every time I added an item to the list I detected whether the scroll bar was visible or not and adjusted my the width manually.
What I did to detect whether the scroll bar was showing was either:
Test for the WS_VSCROLL was set on the control via P/Invoke via GetWindowLong().
Scan the control's children for a vertical scroll bar control.
It depends on how the control handles scroll bars as to which one is correct.
Also this was on Windows, not in the CF so I'm not sure if this will work exactly the same way.
Take the width of the vertical scrollbar into account when calculating the required width for your child controls:
System.Windows.Forms.SystemInformation.VerticalScrollBarWidth
I have a very simple form using the compact framework. I have two search fields a search button and a datagrid. The button sets the DataSource for a DataGrid on the form. I know that I can set the height and width on the DataGrid but I don't want the user to have to use the scroll bars on the DataGrid as it has a few hundred records. I just want the user to use the scroll bar on the form to scroll. How do I accomplish this?
I am assuming that the behavior you want is for a vertical scroll bar that spans the total height of the form to navigate through the records of the DataGrid. This DataGrid does not take up all the space on the form.
You could add a VScrollBar to the side of the form and set its Maximum to the total row count of your DataGrid. Then attach to the ValueChanged event of the scroll bar and manipulate the selected row of your DataGrid. This in effect would be mimicking the scrolling behavior of the DataGrid.
The tricky part is hiding the scroll bar of the DataGrid, as there is no property to hide it. You can extend its width so that the scroll bar is rendered off screen, but remember to set the Form's AutoScroll property to false so that it does not render a Horizontal scroll bar that would reveal the DataGrid kludge.
Based on your application, you may want to look into using a ListView with the View property set to Details. The ListView is much easier to manipulate in the compact framework and might fit your application better. You can still use the same VScrollBar technique above and apply it to the ListView if you wish.
You must get the rowcount from the DataSource. Cast it like the enclosed example to produce the row count: (rsMissingItems is a SqlCEResultSet object)
Dim intRecCnt As Int32 = DirectCast(rsMissingItems.ResultSetView, ICollection).Count