Manually change an item in a datalist

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Example: datalist with 10 items, at regular intervals (timer) I would like to change from Item[0], Item[1], etc.

SetFocus (DataList1. Items[idxImage]) is not good because it always returns to the first item of the datalist.

I can do a cycle to check if the index of the current item is equal to that of the counter (idximage), but the Focus () method does not move to the item.

What I have tried:

SetFocus (DataList1. Items[idxImage]) is not good because it always returns to the first item of the datalist.

foreach (DataListItem item in DataList1. Items)
        {
            if (item. ItemIndex == idxImage)
            {
                (item. FindControl ("ImageButton1") as ImageButton) Focus ();
            }

Posted 12-Feb-18 23:48pm

Member 13174280

Updated 13-Feb-18 1:42am

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CHill60 · Answer 1 · 2018-02-13T00:28:00

Solution 1

It sounds like you are trying to change which item is selected with a timer?

Have a read of this CodeProject article Highlighting and selecting an item in a DataList[^] - you will need to adapt it to deal with your timer.

Posted 13-Feb-18 0:28am

CHill60

Comments

Member 13174280 14-Feb-18 4:18am

I have modified and executed the code (for db MySql) of the link, but only responds to the click on an Item of the DataList.

CHill60 14-Feb-18 7:08am

"only responds to the click on an item of the DataList" ... the code responds to a click of a button. Instead of adding (and clicking) a button put that code into your timer event

#realJSOP · Answer 2 · 2018-02-13T01:42:00

Solution 2

Try this:

if (DataList1.Items.Count > 0)
{
    Control ctrl = DataList1.Items[idxImage];
    if (ctrl != null)
    {
        SetFocus(ctrl);
    }
}

Posted 13-Feb-18 1:42am

#realJSOP

v2

Comments

Member 13174280 14-Feb-18 4:24am

This solution is better than mine, I still can't move the focus from one item to the next.
I think we can simulate the click on ImageButton control

protected void Timer1_Tick(object sender, EventArgs e)
{
//simulate clck on ImageButton to enable event
}