Is it possible to do a carousell with Venobox. e.g. show only three items side by side then use arrows to slide to the next items? Cannot find a setting in the documentation for that. You can only set a width.
How do I show a spinner in a DetailsList? For instance, let's say I have the following items in a DetailsList:
list of items
On clicking the item with the name 'AdipiscingUt.onetoc', show a spinner on the rightmost side of that item (next to 125 KB). Please let me know if you have any suggestions on the same.
Thanks!
You can use selection attribute in <DetailsList> component to catch the selection events. Then create extra column with hidden spinner and display it via selection event.
At least I had the experience when I needed to display the icon status according to each item. I added unique id per each item (using onRender method for columns attribute in <DetailsList>) and use it for identification.
We are using a Dojo List Text Box element containing many values. Now there are so many values, that it can hardlly be displayed in on row. But instead of staying in the frame given by the table cell, the textbox gets so big, that you need to scroll horizontally to see als values. See:
How can I force the text box to start a new line, as soon as the frame of our table cell is reached?
Currently this is our text box:
<xp:td style="width:80%">
<xe:djextListTextBox id="djPersonSerialLetters"
value="#{docApplication.PersonSerienbrief}" multipleSeparator="," multipleTrim="true">
</xe:djextListTextBox>
</xp:td>
Let's assume that we have a RecyclerView with 100 rows. Every row contains a Spinner with values from 1-5 (default of 1).
I scroll down to item row #100, change it's value to 5 and then scroll back up to row #1, my questions is:
When i scroll down again to row #100, will i see the Spinner with value of 5 that i have selected earlier? or the default value of 1 since the RecyclerView will recycle items for re-use (performance boost) and not hold all 100 rows in memory.
Would love to get a good explanation on how this works.
Like you said, the RecyclerView will not hold the 100 rows in memory, hence the name RecyclerView. How many views of the same layout the RecyclerView will hold depends on how many of them fit on the screen.
When you change item #100's value to 5, you are altering one of the recycled views. Now, until you modify that ViewHolder (typically done in onBindViewHolder()), the view will stay the same, which means that that specific ViewHolder will still have 5 as its Spinner value; at any position you are in the list, not necessarily if you scroll down to item at #100, you will see one item with the Spinner value of 5.
Basicly, RecycleView is just that, a View.
So if you scroll to #100 and set spinner to 5, you need to save your selection to the underlying data array.
That way when you scroll to #1 and back to #100, when onBindViewHolder() is called correct value will be loaded and spinner in #100 will show 5.
RecycleView only optimizes UI, as Ari mentioned.
I have a datagridview control with 10 rows on my form window.
Now lets suppose the size of the datagridview in the form can only display 5 rows to user and user has to use vertical scroll bar to see the other 5 rows.
now my question is :
Is there any way to know which 5 rows are currently visible to the user according to the position of scroll bar.
Actually in my program currently i am updating the all the rows value one by one of that datagridview table continuously.
Now i want to only update the rows that are visible in the window. so how can i know what rows are visible according to scroll bar position.
Thanks in advance
The DataGridView control exposes a VerticalScrollingOffset property which can be used to determine how far the view is scrolled. If you know the height of each row in the DataGridView in pixels, you can then calculate which rows of the table are currently visible and refresh them.
The height of each row can be determined through the DataGridViewRow property Height. This defaults to the font height, plus 9 pixels - if you're using the same font size in all rows this should be consistent.
EDIT: Further digging through the documentation shows that each DataGridViewRow exposes a Displayed property that returns true when the row is visible on the user's screen. Checking that would be much easier!
MSDN on DataGridViewRow.Displayed property