Question

我知道这可能是一个新的复制品，但我没有找到任何解决方案来解决我的问题，或者我脑子里遇到了一些逻辑上的灾难......无论如何，我得到了一个Datagrid，我将Datatable绑定到。现在我想在datagrid / datatable中添加一个新行。这个新行必须插入我的sqlite数据库中。所以我正在侦听RowEditEnding事件以获取那些新值，但看起来我必须首先提交新添加的行 - 所以如何在没有StackOverflowException的情况下提交并获取这些值？

WPF Datagrid

                      <DataGrid x:Name="dataGrid" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
                              AutoGenerateColumns="False" 
                              CanUserAddRows="True" CanUserSortColumns="False" 
                              ScrollViewer.CanContentScroll="True" ScrollViewer.VerticalScrollBarVisibility="Visible"
                              ItemsSource="{Binding Path=MlDb.Tbl_Technik}"
                              SelectedItem="{Binding TechnicRow, Mode=OneWayToSource}"
                              IsSynchronizedWithCurrentItem="True" >
                        <i:Interaction.Triggers>
                            <i:EventTrigger EventName="InitializingNewItem">
                                <ic:CallMethodAction MethodName="TeInitializingNewItem" TargetObject="{Binding}" />
                            </i:EventTrigger>
                            <i:EventTrigger EventName="RowEditEnding">
                                <ic:CallMethodAction MethodName="TeRowEditEnding" TargetObject="{Binding}" />
                            </i:EventTrigger>
                            <i:EventTrigger EventName="SelectionChanged">
                                <ic:CallMethodAction MethodName="TeSelectionChanged" TargetObject="{Binding}" />
                            </i:EventTrigger>
                        </i:Interaction.Triggers>
                        <DataGrid.Columns>
                            <DataGridTextColumn Header="Technik ID" Width="70" Binding="{Binding Path=TechnikID}"/>
                            <DataGridTextColumn Header="Techniktyp" Width="100" Binding="{Binding Path=Techniktyp}"/>
                            <DataGridTextColumn Header="Anlage" Width="80" Binding="{Binding Path=Anlage}"/>
                            <DataGridTextColumn Header="Anlagengruppe" Width="100" Binding="{Binding Path=Anlagengruppe}"/>
                            <DataGridTextColumn Header="Bemerkung" Width="110" Binding="{Binding Path=Bemerkung}"/>
                        </DataGrid.Columns>
                    </DataGrid>

我的ViewModel的部分内容如下：

public void TeInitializingNewItem(object sender, InitializingNewItemEventArgs e)
{ //Raised if a new row is added
  newRowTe = true;
}

    public void TeRowEditEnding(object sender, DataGridRowEditEndingEventArgs e)
    { // 



        selectedRow = e.Row.GetIndex();

        if (newRowTe)
        {

            // this position would be great to get the values...
        }
        else
        {
            rowEditEndTe = true;

            DataRowCollection drc = MlDataSetCollection[0].Tbl_Technik.Rows;
            Tbl_TechnikRow notUpdatedRow = (Tbl_TechnikRow)drc[selectedRow];
            technicId = notUpdatedRow.TechnikID;
        }
    }

    public void TeSelectionChanged(object sender, SelectionChangedEventArgs e)
    { //

        if (rowEditEndTe)
        {
            DataGrid materialDg = (DataGrid)sender;
            materialDg.CommitEdit();

            DataRowCollection drc = MlDataSetCollection[0].Tbl_Technik.Rows;
            Tbl_TechnikRow updatedRow = (Tbl_TechnikRow)drc[selectedRow];

            UpdateTblTe(updatedRow);

            rowEditEndTe = false;
        }
        else if (newRowTe)
        {
            // here I would like to call my function to insert new row in sql db IF rows are changing (if the user changed to another ui element or time is down then I will do the insert command)
        }
    }

那么还有其他可以听的事吗？或者有人可以告诉我如何获取值？

由于 #endregion

WPF DataGrid如何在添加新行后获取所选行的值 - mvvm

0 个答案: