在Silverlight的Popup的列表框中设置焦点 [英] Set focus in Popup's Listbox in Silverlight

问题描述

大家好，

我在Silverlight中工作.在我的Silverlight应用程序中，有一个文本框和一个带列表框的弹出窗口.
当我在文本框"中写入任何文本时，我的弹出窗口是打开的，但是当我想在列表框项中设置焦点时，当我按下向下箭头键"时，我想扩展另一件事.我也尝试了很多事情，但仍然没有任何解决方案.

我也尝试这个

Hi All,

I am working in Silverlight. In my Silverlight Application there is One Textbox and One Popup with Listbox.
When i Write any text in Textbox then my popup is open But i want to extend one more thing when i press Down Arrow Key that time i want to set focus in listbox item. I have also try many thing and still i not getting any solution.

I also try this

int selectedIndex = lstRoot.SelectedIndex;
lstRoot.SelectedIndex = 0;
lstRoot.Focus();
lstRoot.SelectedIndex = selectedIndex;

在lstRoot中仍未设置焦点.

请帮助我....!!

Still focus is not set in lstRoot.

Please help me....!!

推荐答案

使用ScrollViewer滚动项目，并在弹出窗口中添加用于显示项目的列表框，您可以轻松地将焦点设置在列表框上物品.例如

Use ScrollViewer for scrolling Item and In Popup add Listbox for display items and you can easily set focus on listbox''s item. for eg.

lstRoot.Focus();

It through set focus on current scrolled item and easily up and down in listbox item.

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