WPF中的主从 [英] Master-Detail in wpf

问题描述

您好，我正在尝试为Master ID创建详细信息DataGrid
但是，当我输入新ID并尝试编辑详细信息DataGrid时，新详细信息记录将从DataGrid消失，但存储在DataTable中，当我重新加载项目时可以看到它.

XAML
我正在使用CollectionViewSource，它们显示的Master Detail场景很好，但是涉及更新时.
在这里，我创建了一条新记录，用户在其中输入新的ID和ID的新详细信息
效果很好.

Hello I am trying to create a details DataGrid for a Master ID
However when I enter a new ID and try to edit the details DataGrid the new details record disappears from the DataGrid but is stored in the DataTable and I can see it when I reload the project.

XAML
I am using CollectionViewSource and they display the Master Detail scenario just fine but when it comes to updating.
Here I create a new record where the User inputs new ID and new Details for the ID
This works fine.

button click
    {
    CollectionViewSource vs = (CollectionViewSource)FindResource("CVSVouchers);
                    ObjectDataProvider odp = (ObjectDataProvider)FindResource("Vouchers");
                    DataView dv = (DataView)odp.Data;
                    dv.AddNew();           
                    vs.View.MoveCurrentToLast();
    
    }

我处理了Datagrids Row EditEnding

and I handle the Datagrids Row EditEnding

Datagrid RowEditEnding
{
            
                DataGridRow gridrow = e.Row;
                DataRowView drv = gridrow.Item as DataRowView;
                DataSet.ExpensesRow ExpRow = drv.Row as DataSet.ExpensesRow;
                actExpRow.VoucherSN = float.Parse(this.txtID.Text);

}

然后记录从DataGrid消失，但保存在DateTable中.

then the record disappears from the DataGrid but is saved in the DateTable.

推荐答案

看看:
WPF DataGrid实用示例 [

Have a look at:
WPF DataGrid Practical Examples[^]

Best regards
Espen Harlinn

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