在SL/WPF中实现列表的滚动显示

[terycuit]

以前是做ASP.NET网页开发的，在页面上需要实现列表的滚动显示时间常用JS轻松的完成了，但在WPF中却很难，我尝试过用listbox,但有两个问题，
一是滚动用生硬（一跳一跳的,而且样式不好控制），
二是，我想单击标题弹出内容，我用listbox的selectionChange事件完成，但单击后item是选中状态，需要再点一次之后，才能激动事件....

希望前辈帮忙给个思路，如果有示例代码就最好，我就是想实现一个新闻列表的滚动显示，并能单击新闻标题弹出新闻内容的功能，感谢各位了

[jv9]

开发WPF动画可以使用Expression Blend，可以参考以下示例教程：

http://silverlightchina.net/html/zhuantixilie/getstart/2010/0409/978.html

另外可以参考，WPF时钟动画实例：

http://www.silverlightchina.net/html/study/WPF/2011/1211/12437_3.html

[jv9]

另外，在code project上也有个不错的实例可以参考：
http://www.codeproject.com/Articles/20048/Immerse-Yourself-in-WPF-A-quot-World-Clocks-quot-A

[terycuit]

这不仅是动画吧....谁能针对我的需求说一下啊

[terycuit]

自已再顶一下

[terycuit]

求解啊。。。

[mizuho_2006]

你用SelectedIndexChanged事件试试

其实SL中也可以用JS。。。

[qq5457237]

二:你可以自定义template，选中后样式不发生变化就行了。

[bbsmvc]

在XAML里：
<StackPanel Name="spScrollNews" Orientation="Horizontal" HorizontalAlignment="Left">
<!--等待动态添加-->
</StackPanel>

在C#里：

private System.Windows.Threading.DispatcherTimer dt = new DispatcherTimer();
private int scrollNewsSwidth=2;

private void LoadNews()
{

IQueryable<dms_News> importantNews = rp.GetAllNews(true).Take(15); ;
IQueryable<dms_News> normalNews = rp.GetAllNews(false).Take(15);

for(int i=1;i<16;i++)
{
showImportantNews(importantNews, i);
showNormalNews(normalNews, i);
}
//让最新（修改）的一普通新闻内容在顶部滚动
showScrollNews(normalNews);
spScrollNews.Width = scrollNewsSwidth;
spScrollNews.Margin = new Thickness(this.Width, 0, 0, 0);
//滚动开始
dt.Interval = TimeSpan.FromMilliseconds(100);
dt.Tick += new EventHandler(dt_Tick);
dt.Start();
}

private void showScrollNews(IQueryable<dms_News> normalNews)
{
var firstNews = normalNews.FirstOrDefault();
System.IO.StringReader sr = new System.IO.StringReader(firstNews.Content);
System.Xml.XmlReader xr = System.Xml.XmlReader.Create(sr);
FlowDocument fd = (FlowDocument)System.Windows.Markup.XamlReader.Load(xr);
TextRange tr = new TextRange(fd.ContentStart, fd.ContentEnd);
string content=tr.Text.Replace('\r', ' ').Replace('\n', ' ');
TextBlock scrollNews = new TextBlock();
scrollNews.Text = string.Concat(firstNews.Title, ": ",content );
spScrollNews.Children.Add(scrollNews);
scrollNewsSwidth += scrollNews.Text.Count() * 12;
}
private void showNormalNews(IQueryable<dms_News> normalNews, int i)
{
if (i <= normalNews.Count())
{
if (i < 9)
{
NewsTextBlock tbn = new NewsTextBlock();
tbn.news = normalNews.Skip(i - 1).FirstOrDefault();
tbn.ToolTip = "发布时间：" + tbn.news.CreatTime;
tbn.Text = string.Concat(i, ". ", tbn.news.Title);
tbn.Margin = new Thickness(6);
tbn.MouseLeftButtonDown += new MouseButtonEventHandler(tb_MouseLeftButtonDown);
spNormalNews.Children.Add(tbn);

}
/********添加至滚动新闻标题Start*******
NewsTextBlock tbnScroll = new NewsTextBlock();
tbnScroll.news = normalNews.Skip(i - 1).FirstOrDefault();
tbnScroll.ToolTip = "发布时间：" + tbnScroll.news.CreatTime;
tbnScroll.Text = tbnScroll.news.Title;
tbnScroll.Margin = new Thickness(5, 2, 25, 2);
tbnScroll.MouseLeftButtonDown += new MouseButtonEventHandler(tb_MouseLeftButtonDown);
tbnScroll.MouseMove += new MouseEventHandler(tb_MouseMove);
tbnScroll.MouseLeave += new MouseEventHandler(tb_MouseLeave);
spScrollNews.Children.Add(tbnScroll);
scrollNewsSwidth += 30 + tbnScroll.Text.Count() * 12;
********添加至滚动新闻标题End******* */
}
}

private void showImportantNews(IQueryable<dms_News> importantNews, int i)
{
if (i <= importantNews.Count())
{
if (i < 9)
{
NewsTextBlock tb = new NewsTextBlock();
tb.news = importantNews.Skip(i - 1).FirstOrDefault(); ;
tb.ToolTip = "发布时间：" + tb.news.CreatTime;
tb.Text = string.Concat(i, ". ", tb.news.Title);
tb.Margin = new Thickness(6);
//spImportantNews.Width += 30 + p.Myname.Count() * 13;
tb.MouseLeftButtonDown += new MouseButtonEventHandler(tb_MouseLeftButtonDown);
spImportantNews.Children.Add(tb);
// scrollNewsSPcount++;
}
/********添加至滚动新闻标题Start*******
NewsTextBlock tbScroll = new NewsTextBlock();
tbScroll.news = importantNews.Skip(i - 1).FirstOrDefault(); ;
tbScroll.ToolTip = "发布时间：" + tbScroll.news.CreatTime;
tbScroll.Text = tbScroll.news.Title;
tbScroll.Margin = new Thickness(5, 2, 25, 2);
tbScroll.MouseLeftButtonDown += new MouseButtonEventHandler(tb_MouseLeftButtonDown);
tbScroll.MouseMove += new MouseEventHandler(tb_MouseMove);
tbScroll.MouseLeave += new MouseEventHandler(tb_MouseLeave);
spScrollNews.Children.Add(tbScroll);
scrollNewsSwidth += 30 + tbScroll.Text.Count() * 12;
* ********添加至滚动新闻标题End******* */
}
}

private void tb_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
InfoShowWindows.ShowNewsDetailsWindow sndw =
new InfoShowWindows.ShowNewsDetailsWindow((sender as NewsTextBlock).news);
sndw.ShowDialog();
}

private void dt_Tick(object sender, EventArgs e)
{
if (spScrollNews.Width + spScrollNews.Margin.Left > 0 )//|| ws + spScrollNews.Margin.Left > 0)
{
spScrollNews.Margin = new Thickness(spScrollNews.Margin.Left - 2, 0, 0, 0);
}
else
{
spScrollNews.Margin = new Thickness(this.Width, 0, 0, 0);
dt.Stop();

//刷新新闻
dt.Stop();
dt.Tick -= new EventHandler(dt_Tick);
scrollNewsSwidth = 20;
spScrollNews.Children.Clear();
spImportantNews.Children.Clear();
spNormalNews.Children.Clear();
LoadNews();

}

}

private void tb_MouseMove(object sender, MouseEventArgs e)
{
dt.Stop();
}

private void tb_MouseLeave(object sender, MouseEventArgs e)
{
dt.Start();
}
}

public class NewsTextBlock : TextBlock
{
public dms_News news { get; set; }
}