当datagridcombobox单元格值更改时，如何在WPF datagridtextcolumn单元格中设置值？
我正在使用WPF 4.0 Datagrid开发一个应用程序。我的Datagrid网格有一个datagridcomboboxcolumn和一个datagridtextcolumn。如何使用datagridcomboboxcolumn的SelectedIndex_Changed事件更改datagrid文本单元格值？
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戒黑恳农
），而是绑定到ViewModel（VM）和/或模型（M）中的可观察对象。 使用这种架构，解决您的问题很容易。只需将DataGridComboBoxColumn的绑定到DataGrid的ItemSource对象上的属性即可。然后，将DataGridTextColumn绑定到该属性。这在代码中有更好的解释： 视图：<!-- Previous Window XAML omitted, but you must set it's DataContext to the ViewModel --> <DataGrid CanUserAddRows="False" AutoGenerateColumns="False" ItemsSource="{Binding People}" > <DataGrid.Columns> <DataGridTextColumn Header="Selected Name" Binding="{Binding Name}" /> <DataGridComboBoxColumn Header="Available Names" SelectedItemBinding="{Binding Name}" > <DataGridComboBoxColumn.ElementStyle> <Style TargetType="{x:Type ComboBox}"> <Setter Property="ItemsSource" Value="{Binding Names}" /> </Style> </DataGridComboBoxColumn.ElementStyle> <DataGridComboBoxColumn.EditingElementStyle> <Style TargetType="{x:Type ComboBox}"> <Setter Property="ItemsSource" Value="{Binding Names}" /> </Style> </DataGridComboBoxColumn.EditingElementStyle> </DataGridComboBoxColumn> </DataGrid.Columns> </DataGrid>internal class MainWindowViewModel : ViewModelBase { private ObservableCollection<Person> _people; public ObservableCollection<Person> People { get { _people = _people ?? new ObservableCollection<Person>() { new Person(), new Person(), new Person(), }; return _people; } } }internal class Person : INotifyPropertyChanged { private static ObservableCollection<string> _names = new ObservableCollection<string>() { "Chris", "Steve", "Pete", }; public ObservableCollection<string> Names { get { return _names; } } private string _name; public string Name { get { return _name; } set { if (_name != value) { _name = value; this.RaisePropertyChanged(() => this.Name); } } } public event PropertyChangedEventHandler PropertyChanged; private void RaisePropertyChanged<T>(Expression<Func<T>> expr) { var memberExpr = expr.Body as MemberExpression; if (memberExpr != null) { var handler = this.PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(memberExpr.Member.Name)); } } else { throw new ArgumentException(String.Format("'{0}' is not a valid expression", expr)); } } }