我有一个 ObservableCollection,它从从 Postgres 数据库填充的 DataTable 中获取数据。我需要将此 ObservableCollection 绑定到 DataGrid 中的 ComboBoxColumn。我已经看到了很多关于如何做到这一点的例子,但我经常错过一些东西。
编辑:这是新的更新代码,除了 INotifyPropertyChanged 我只设置为“名称”(还)
namespace Country_namespace
{
public class CountryList : ObservableCollection<CountryName>
{
public CountryList():base()
{
// Make the DataTables and fill them
foreach(DataRow row in country.Rows)
{
Add(new CountryName((string)row.ItemArray[1], (int)row.ItemArray[0]));
}
}
}
public class CountryName: INotifyPropertyChanged
{
private string name;
private int id_country;
public event PropertyChangedEventHandler PropertyChanged;
public CountryName(string country_name, int id)
{
this.name = country_name;
this.id_country = id;
}
public string Name
{
get { return name; }
set {
name = value;
OnPropertyChanged("CountryName");
}
}
public int idcountry
{
get { return id_country; }
set { id_country = value; }
}
protected void OnPropertyChanged(string name)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(name));
}
}
}
}
XAML:
xmlns:c="clr-namespace:Country_namespace"
<Windows.Resources>
<c:CountryList x:Key="CountryListData"/>
</Windows.Resources>
数据网格列:
<dg:DataGridTemplateColumn Header="country">
<dg:DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<ComboBox ItemsSource="{Binding Source={StaticResource CountryListData}}" DisplayMemberPath="Name"></ComboBox>
</DataTemplate>
</dg:DataGridTemplateColumn.CellTemplate>
</dg:DataGridTemplateColumn>