选择更改了Devexpress gridcontrol中的ComboBoxEditSettings事件(Silverlight)

Question

我在做silverlight 4 App.

我有5列的devexpress gridcontrol,我把ComboBoxEditor放在一列中.

<dxg:GridControl x:Name="grid_currentillnes">
                            <dxg:GridControl.Columns>
                                <dxg:GridColumn FieldName="Complaints" Header="Complaints/Disease" />
                                <dxg:GridColumn FieldName="Duration" Header="Duratiion" />
                                <dxg:GridColumn FieldName="Period" Header="Period" />
                                <dxg:GridColumn Header="Treatment" FieldName="Treatment">
                                    <dxg:GridColumn.EditSettings>
                                        <dxe:ComboBoxEditSettings x:Name="cmbx_treatmenttype" PopupMaxHeight="150"  DisplayMember="Treatment" ValueMember="Treatment"  />
                                    </dxg:GridColumn.EditSettings>
                                </dxg:GridColumn>
                                <dxg:GridColumn Header="Details" FieldName="Details" />
                            </dxg:GridControl.Columns>
                            <dxg:GridControl.View>
                                <dxg:TableView Name="tableView4" ShowGroupPanel="False"  NewItemRowPosition="Top" NavigationStyle="Cell"  />
                            </dxg:GridControl.View>
                        </dxg:GridControl>

我想得到组合框编辑器的选择更改事件但没有这样的事件存在......怎么这样做？

Answer 1

当View处于编辑模式时,一次只有一个编辑器.显示此编辑器后,View将触发GridViewBase.ShownEditor事件.因此,您可以使用此事件来订阅活动编辑器(GridViewBase.ActiveEditor)的任何事件(例如ComboBoxEdit.SelectedIndexChanged).要取消订阅该事件,您可以使用GridViewBase.HiddenEditor:

tableView3.ShownEditor += new EditorEventHandler(tableView3_ShownEditor);
tableView3.HiddenEditor += new EditorEventHandler(tableView3_HiddenEditor);
//...
void tableView3_ShownEditor(object sender, EditorEventArgs e) {
    if(e.Column.FieldName == "Treatment") {
        ((ComboBoxEdit)tableView3.ActiveEditor).SelectedIndexChanged += ComboBoxEdit_SelectedIndexChanged;
    }
}
void tableView3_HiddenEditor(object sender, EditorEventArgs e) {
    if(e.Column.FieldName == "Treatment") {
        ((ComboBoxEdit)tableView3.ActiveEditor).SelectedIndexChanged -= ComboBoxEdit_SelectedIndexChanged;
    }
}
void ComboBoxEdit_SelectedIndexChanged(object sender, RoutedEventArgs e) {
    // do something
}