这是DataGrid中的绑定列的解决方法。由于Columns属性是ReadOnly，就像每个人都注意到的那样，我创建了一个名为BindableColumns的Attached属性，该属性每次通过CollectionChanged事件更改集合时都会更新DataGrid中的Columns。
如果我们有这个DataGridColumn的集合
public ObservableCollection<DataGridColumn> ColumnCollection{ get; private set;}然后我们可以像这样将BindableColumns绑定到ColumnCollection
<DataGrid Name="dataGrid" local:DataGridColumnsBehavior.BindableColumns="{Binding ColumnCollection}" AutoGenerateColumns="False" ...>附加属性BindableColumns
public class DataGridColumnsBehavior{ public static readonly DependencyProperty BindableColumnsProperty = DependencyProperty.RegisterAttached("BindableColumns",typeof(ObservableCollection<DataGridColumn>),typeof(DataGridColumnsBehavior),new UIPropertymetadata(null, BindableColumnsPropertyChanged)); private static void BindableColumnsPropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e) { DataGrid dataGrid = source as DataGrid; ObservableCollection<DataGridColumn> columns = e.NewValue as ObservableCollection<DataGridColumn>; dataGrid.Columns.Clear(); if (columns == null) { return; } foreach (DataGridColumn column in columns) { dataGrid.Columns.Add(column); } columns.CollectionChanged += (sender, e2) => { NotifyCollectionChangedEventArgs ne = e2 as NotifyCollectionChangedEventArgs; if (ne.Action == NotifyCollectionChangedAction.Reset) { dataGrid.Columns.Clear(); foreach (DataGridColumn column in ne.NewItems) { dataGrid.Columns.Add(column); } } else if (ne.Action == NotifyCollectionChangedAction.Add) { foreach (DataGridColumn column in ne.NewItems) { dataGrid.Columns.Add(column); } } else if (ne.Action == NotifyCollectionChangedAction.Move) { dataGrid.Columns.Move(ne.OldStartingIndex, ne.NewStartingIndex); } else if (ne.Action == NotifyCollectionChangedAction.Remove) { foreach (DataGridColumn column in ne.OldItems) { dataGrid.Columns.Remove(column); } } else if (ne.Action == NotifyCollectionChangedAction.Replace) { dataGrid.Columns[ne.NewStartingIndex] = ne.NewItems[0] as DataGridColumn; } }; } public static void SetBindableColumns(DependencyObject element, ObservableCollection<DataGridColumn> value) { element.SetValue(BindableColumnsProperty, value); } public static ObservableCollection<DataGridColumn> GetBindableColumns(DependencyObject element) { return (ObservableCollection<DataGridColumn>)element.GetValue(BindableColumnsProperty); }}
