Question

我在XAML CODE中有一个网格模板：

<Grid x:name="gridTemplate>
Childrens...
</Grid>

现在我想在 foreach 循环中将此网格放在 LongListSelector 中：

foreach(var item in myList)
{
   clonedGrid= ??? (need clone here my xaml control)
   longlistselector.Items.Add(clonedGrid):
}

这适用于WPF：

 public static class ExtensionMethods
{
    public static T XamlClone<T>(this T original)
        where T : class
    {
        if (original == null)
            return null;

        object clone;
        using (var stream = new MemoryStream())
        {
            XamlWriter.Save(original, stream);
            stream.Seek(0, SeekOrigin.Begin);
            clone = XamlReader.Load(stream);
        }

        if (clone is T)
            return (T)clone;
        else
            return null;
    }
}

如何在WINDOWS PHONE 8中实现此功能？

Answer 1

我会创建一个contentControl，我可以从这样的资源中放入dataTemplate：

XAML

<phone:PhoneApplicationPage.Resources>
    <DataTemplate x:Key="MyGrid">
        <Grid>
            <!-- here is your data template, where you can bind to item's properties -->
        </Grid>
    </DataTemplate>
</phone:PhoneApplicationPage.Resources>

CS

foreach (var item in myList)
{
     ContentControl control = new ContentControl();
     control.Content = item;
     control.ContentTemplate = Resources["MyGrid"] as DataTemplate;
     longlistselector.Items.Add(control);
}

Answer 2

如果Grid没有设置很多属性，那么只需创建创建新Grid的方法并将其作为参数传递给旧Grid，这样就可以将所有属性设置为相同。

public Grid CloneGrid(Grid input)
{
Grid temp = new Grid();
temp.Width = input.Widht;
... etc

return temp;
}

编辑：另一种方法是在Style中将您的属性定义为App.xaml，然后将其应用于Grid：

Grid.Style = App.Current.Resources[StyleKey] as Style;

克隆网格Windows Phone 8

2 个答案: