手动更改数据列表中的项目 [英] Manually change an item in a datalist

问题描述

示例：有10个项目的datalist，定期（定时器）我想改变Item [0]，Item [1]等。



SetFocus（DataList1。Items [idxImage]）不好，因为它总是返回到datalist的第一项。



我可以做一个循环来检查索引是否当前项目的等于计数器（idximage），但Focus（）方法不会移动到项目。



我有什么试过：

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 ();
            }

推荐答案

听起来你正试图改变用计时器选择的项目？



阅读本CodeProject文章突出显示并选择数据列表中的项目 [ ^ ] - 您需要对其进行调整以处理您的计时器。

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.

试试这个：

Try this:

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

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