WPF Application master detail

Question

Hello together,

I want to add a order number, then add a material number with quantity.

Master, Detail with C#

---

OrderNumber = ………

Fill the list OrderNumbers

On right site I need a MaterialList

Input: Material = …….. Quantity = ……

     Add, Edit, Delete Button

Fille the list with MaterialNumbers and Quantity

Save it as XML.

Should be possible to reload it.

I'm looking for a good sample code.

Thanks in advance for your help!

Regards Markus

Answer 1

I will give you two ways to generate OrderNumbers automatically.
Method1:

private void MyDataGrid_LoadingRow(object sender, DataGridRowEventArgs e)
        {
            e.Row.Header = (e.Row.GetIndex() + 1).ToString();
        }

Method2:

 <Window.Resources>
        <ResourceDictionary>
            <local:RowToIndexConverter x:Key="rowToIndexConverter"/>
        </ResourceDictionary>
    </Window.Resources>

<DataGridTextColumn Header="OrderNumbers " Binding="{Binding RelativeSource={RelativeSource AncestorType=DataGridRow}, Converter={StaticResource rowToIndexConverter}}" />

The converter is:

public class RowToIndexConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            DataGridRow row = value as DataGridRow;
            if (row != null)
                return row.GetIndex() + 1;
            else
                return -1;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

Answer 2

Thanks for the quick response.
I have a TextBox enter the new number Like 20200709-Cust7654.

The add button should fill the listbox.

For material, I need two columns, like grid.
Can you post more details?
Thanks.

Best regards Markus

Answer 3

Thanks, looks good, but not perfect.

I need a own list for orders.
A detail list for material and quantity and comment.

Primary Key. Foreign Key.
Save as XML.

If I edit, _showCellseditingTemplate null exception.

Can you help again, pleased?

Thanks.

Answer 4

Yes I need MVVM.

I enter the order number. For each order numbers I can use different materials.
I need a textbox for material and for quantity, and yes for comment, why not.
A ADD button for fill the list, a button to delete whe whole list and for each row a button to delete a special item as you do it.

Thanks for help.

Answer 5

A SAVE button to save it as XML file.
A LOAD button to reload it inside the view.

The name of the file is OrderNumber.XML

If a order is selected, the SAVE button is enable and I can exactly save this order with the right material list.

Relation is Order 1:n Material

Hope now clear what I need.

MVVM I need, yes. Is not all clear for how it is work. I need a good model.

        public event PropertyChangedEventHandler PropertyChanged;

        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)

        ICommand handler