WPF 控件之ComboBox绑定

直接粘过来一个方法。。

WPF中提供了数据绑定的功能，操作起来很方便，集合类的控件几乎都可以用数据源来进行数据的绑定，下面操作一下下拉列表框控件ComboBox控件的数据绑定操作。

要绑定到ComboBox控件的自定义类:

public class LocationRoad

{

    public int ID { set; get; }

    public string Code { set; get; }

    public string Info { set; get; }

}

建立数据源，我们就将此数据集合当作数据源绑定到ComboBox:

///

/// 当ComboBox选中项更改时发生

///

private LocationRoad _selectLocation;

public LocationRoad SelectLocation

{

    get

    {

        return this._selectLocation;

    }

    set

    {

        this._selectLocation = value;

        if (this.PropertyChanged != null)

            PropertyChanged(this, new PropertyChangedEventArgs("SelectLocation"));

    }

}

 

private ObservableCollection _locationRoad = null;

 

public ObservableCollection LocationSource

{

    get

    {

        if (this._locationRoad == null)

        {

            this._locationRoad = new ObservableCollection() {

                 new LocationRoad() { ID = 1, Code = "NGQ", Info = "南岗区" },

                 new LocationRoad() { ID = 2, Code = "DLQ", Info = "道里区" },

                 new LocationRoad() { ID = 3, Code = "DWQ", Info = "道外区" },

                 new LocationRoad() { ID = 4, Code = "PFQ", Info = "平房区" },

                 new LocationRoad() { ID = 5, Code = "XFQ", Info = "香坊区" },

                 };

 

        }

        return this._locationRoad;

    }

    set

    {

        this._locationRoad = value;

        if (this.PropertyChanged != null)

            PropertyChanged(this, new PropertyChangedEventArgs("LocationSource"));

    }

}

前台XAML文件绑定方式：

<ComboBox Margin="-16,3,0,5" Grid.Row="1" Grid.Column="2" Grid.ColumnSpan="2" Name="cboxLocationKeyword"

 ItemsSource="{Binding LocationSource,Mode=OneWay}"   --->单项绑定数据源

 SelectedValuePath="ID"     --->这个是选中后的值，应该就是SelectedValue

 DisplayMemberPath="Info"   --->这个是显示的text

 SelectedItem="{Binding SelectLocation}" />

如果要进行双向绑定或其他的绑定方式，只要更改上面binging块中的Mode方式就可以了。