In a checkedlistbox control in C# winforms I can add items into it, however the items will be placed under each other even when the height is smaller than the items combined.
My question is;
Can I "split" the checkedlistbox so you can see everything without having to scroll?
So when the left side is full, it will start on the other half of the checkedlistbox.
What you are looking for is CheckedListBox.MultiColumn property.
Related
I am currently developping a slideshow viewer that should be able to display all of its images in a grid like display. However, this display has the following requirements :
It should show all items without having to scroll;
It should be able to handle resizing well (like the Grid control does);
I am using a ListBox, with its ItemPanel set to either WrapPanel or UniformGrid, but they didn't met the requirements : Wrap Panel isn't resizing its items to fill all available space ; UniformGrid gets closer to the desired result, but still leaves an empty space at the end of the last row (ie it should only add a row when it can entirely fill it)
I am therefore looking into a way of setting an UniformGrid so that there's no "blank" left at the end.
As an example, let's say I have three items in my collection, and the actual room to fit them all on one row ; the grid will still creates another row for the third one.
I am also open to solutions for that problem involving other controls, as long as they have a similar behaviour on item resizing and still show all of their items at once.
Thanks
We finally decided to go with a simple wrap with a variable width between items and to just deal with having to scroll if there's too many items.
I have two problems with a ListView I am using.
My ListView is set as ListViewView.View = List and I am adding a few items to it, via ListView.Items.Add(string).
The first one, I notice that for text items that are wider than the width of the ListView itself there is no horizontal scroll bad, and I can't seem to find a way to enable it.
The second is that to select an item I need to select click on part of the item itself, rather than the line the item is in. In other words, if I have an item with a really small length, I can't click anywhere on the line to select it, I have to click on it.
Here is an the code I have an what I am seeing:
listView1.Items.Add("aaaabbbbccccddddffffeeeegggghhhhiiiijjjjkkkkllllmmmmnnnnooooppppqqqqrrrrssssttttuuuuvvvvwwwwxxxxyyyyzzzz");
listView1.Items.Add("a");
As you can see from the image above there are no scroll bars and the length of the text on Index[0] is much wider than the width of the ListView
Likewise on Index[1] where the text is just a single a, to select it I have to click directly on top of the a rather than anywhere else in the line.
Is there a way of fixing these two problems easily?
Also the reason why I'm using a ListView is because I want to add images to the items.
Thanks.
For your second problem just set the FullRowSelect to true in properties or you can do listview1.FullRowSelect = true;
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 created a CheckedListBox control with 4 elements in C#. Multicolumn is set to true. As soon as I make the height of the control small enough to contain only a single row, I can no longer interact with the control with the cursor when I execute the program. If I make the height one unit (pixel?) larger, so that there are 2 columns of 2 rows, behavior returns to normal.
When the cursor cannot interact with the CheckedListBox, I can still tab to it, toggle between its elements with the arrow keys, and check/uncheck elements with the space bar. I just cannot use the cursor.
Looks like a bug to me... I'm experiencing the same thing occasionally. It happens when (1) the CheckedListBox is 1 row high, and (2) the items in it extend ANY past the right edge of the control. If the control is made a little wider, the mouse clicking works again. (You can test that theory by anchoring the CheckedListBox Left/Right and resizing the form. Now it works, now it don't.)
Seems like setting the width to be total column width + 4 also works.
There is a minimum width such that all columns are fully displayed that must be met before you can interact with it via mouse cursor.
I am making a WP7 app which has a Listbox of UserControls. Each UserControl has an ItemsControl and Button(for getting more results). On click of the button the ItemsControl items will be increased by 5 or 10.
Now on clicking on the GetMore button of any of the usercontrols except the first or last, there will be an increase in Scrollable height(Total height of the listbox) of the ListBox but the VerticalOffset(position of scrollbar from top) of the ListBox remains same. Now the problem I am facing is that the Vertical Offset is not absolute but relative to Scrollable Height. So the content being viewed till then will be changed basing on the new value of ScollableHeight.
I want to know the relation between them, so that I can do some math and set the VerticalOffset value.
I have added some dependency properties on VerticalOffset and ScrollableHeight through which I can get the events when any of them is changed. Trying to use ScrollIntoView for readjusting the Vertical Offset
Any suggestions or corrections are highly appreciated.
I am not able to find the calculation. But what can be done is listbox can be replaced by a scrollviewer which has itemsControl inside it. But the disadvantage of this is virtualisation is disabled, so will need to check on this.
But, overall this is going to give a bad experience on using such a UserControl in Listbox. So using templated list box given in WP7 toolkit is an option but it is gonna hang a bit since ListBox is not optimized for multi templated virtualization. So I started showing writing listbox item template in such a way it contains all the possible layouts which will enabled from a condition.