有的时候在XAML里面创建一个通用的DataTemplate比较麻烦，例如在DataTemplate里面有一个控件需要绑定到不同的属性里面，例如下面的代码：
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<DataTemplate x:Key="TestDataTemplate"> <TextBox Width="200" Text="{Binding Path=XXX}" /> </DataTemplate>
<ListView x:Name="TestDataGrid"> <ListView.View> <GridView> <GridViewColumn Header="Name" CellTemplate="{StaticResource TestDataTemplate}"/> <GridViewColumn Header="Gender" CellTemplate="{StaticResource TestDataTemplate}"/> <GridViewColumn Header="Birthday" CellTemplate="{StaticResource TestDataTemplate}"/> </GridView> </ListView.View> </ListView> |
你希望重用TestDataTemplate，里面的TextBox的Binding的路径可以根据应用的GridViewColumn而改变。这种情况下，我能想到的方法可能就是使用代码的方式来创建DataTemplate了，使用代码的方式给你很大的可定制性—虽然MSDN不推荐使用代码的方式创建DataTemplate（http://msdn.microsoft.com/en-us/library/system.windows.frameworkelementfactory.aspx）。
下面是通过代码的方式创建DataTemplate的方法：
C#代码：
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/// <summary> |
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/// Interaction logic for Window1.xaml |
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/// </summary> |
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public partial class Window1 : Window |
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{ |
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public Window1() |
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{ |
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InitializeComponent(); |
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Loaded += new RoutedEventHandler(Window1_Loaded); |
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} |
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void Window1_Loaded(object sender, RoutedEventArgs e) |
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{ |
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People people = new People(); |
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people.Add(new Person("Person 1", false, new DateTime(1980, 1, 30))); |
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people.Add(new Person("Person 2", false, new DateTime(1980, 1, 30))); |
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people.Add(new Person("Person 3", true, new DateTime(1982, 1, 30))); |
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people.Add(new Person("Person 4", true, new DateTime(1980, 4, 30))); |
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people.Add(new Person("Person 5", true, new DateTime(1980, 1, 3))); |
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people.Add(new Person("Person 6", false, new DateTime(1977, 11, 10))); |
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people.Add(new Person("Person 7", true, new DateTime(1987, 12, 30))); |
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people.Add(new Person("Person 8", false, new DateTime(1980, 1, 1))); |
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people.Add(new Person("Person 9", false, new DateTime(1981, 2, 28))); |
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people.Add(new Person("Person 10", false, new DateTime(1983, 10, 30))); |
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TestDataGrid.ItemsSource = people; |
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GridViewColumn column1 = ((GridView)TestDataGrid.View).Columns[0]; |
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GridViewColumn column2 = ((GridView)TestDataGrid.View).Columns[1]; |
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GridViewColumn column3 = ((GridView)TestDataGrid.View).Columns[2]; |
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column1.CellTemplate = CreateTemplate("Name"); |
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column2.CellTemplate = CreateTemplate("Gender"); |
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column3.CellTemplate = CreateTemplate("Birthday"); |
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} |
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private DataTemplate CreateTemplate(string column) |
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{ |
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DataTemplate template = new DataTemplate(); |
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FrameworkElementFactory factoryText = |
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new FrameworkElementFactory(typeof(TextBox)); |
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factoryText.SetValue(TextBox.TextProperty, new Binding(column)); |
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template.VisualTree = factoryText; |
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return template; |
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} |
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} |
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public class Person |
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{ |
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public string Name { get; set; } |
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public bool Gender { get; set; } |
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public DateTime Birthday { get; set; } |
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public Person(string name, bool gender, DateTime birthday) |
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{ |
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Name = name; |
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Gender = gender; |
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Birthday = birthday; |
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} |
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} |
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public class People : ObservableCollection<Person> |
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{ |
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} |
XAML代码：
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<ListView x:Name="TestDataGrid"> |
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<ListView.View> |
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<GridView> |
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<GridViewColumn Header="Name" /> |
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<GridViewColumn Header="Gender" /> |
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<GridViewColumn Header="Birthday"/> |
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</GridView> |
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</ListView.View> |
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</ListView> |
如果你需要给DataTemplate里面的控件设置Style或者Template的话，可以通过
factoryText.SetValue(..., ....);
来实现