WPF 动态创建 DataTemplate 及数据绑定

WPF 动态创建 DataTemplate 及数据绑定

运行环境:Window7 64bit,.NetFramework4.61,C# 6.0; 编者:乌龙哈里 2017-02-22


参考:

正文:

方法就是在内存中动态生成一个 XAML ,仿照前端一样写一个 DataTemplate 。如下面的前端:

<Window.Resources>
    <DataTemplate x:Key="123">
        <TextBox Text="{Binding [3]}"/>
    </DataTemplate>
</Window.Resources>

下面开始模拟它写,注意:
XNamspace、XElement 都要 using System.Xml.Linq;
XmlReader 要 using System.Xml;
XamlReader 要 using System.Windows.Markup;

示例1:

List<int[]> list = new List<int[]>();
list.Add(new int[] {1,2,3,4 });
list.Add(new int[] { 3,4,5,6 });
list.Add(new int[] { 4, 5, 6, 7 });
list.Add(new int[] { 10,12, 13, 14 });

GridView view = new GridView();
view.Columns.Add(new GridViewColumn { Header="A",DisplayMemberBinding=new Binding("[0]")});
view.Columns.Add(new GridViewColumn { Header = "B",DisplayMemberBinding=new Binding("[1]")});
view.Columns.Add(new GridViewColumn { Header = "C", DisplayMemberBinding = new Binding("[2]") });

XNamespace ns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation";
XElement xe =new XElement(ns +"DataTemplate",
    new XAttribute("xmlns", "http://schemas.microsoft.com/winfx/2006/xaml/presentation"),
    new XElement(ns +"TextBox", new XAttribute("Text", @"{Binding [3]}"))
);
XmlReader xr = xe.CreateReader();
DataTemplate dt = XamlReader.Load(xr) as DataTemplate;

view.Columns.Add(new GridViewColumn { Header = "D", CellTemplate = dt });
//lsvShow 是个 ListView 控件
lsvShow.View = view;
lsvShow.ItemsSource = list;

运行结果如下图:
WPF 动态创建 DataTemplate 及数据绑定

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