Binding Enum to combobox and is int value to datagrid cell

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Hi babucr,

>>I want to bind Trans_Category cell with int value of Enum from combo selected item

I modified your code. I get the Enm_PR value of the current row by binding an Enm_PR Currentenm_pr field. When selected, this value will change the value of your choice.

You can bind the Enm_PR Currentenm_pr field to a column.

The following code for your reference. I hope it will help you.

XAML:

<Window.Resources>
        <ObjectDataProvider x:Key="EnumDataProvider" 
                        MethodName="GetValues" 
                        ObjectType="{x:Type System:Enum}">
            <ObjectDataProvider.MethodParameters>
                <x:Type TypeName="local:Enm_PR"/>
            </ObjectDataProvider.MethodParameters>
        </ObjectDataProvider>
    </Window.Resources>

    <DataGrid x:Name="vm_GDailyDataGrid" AutoGenerateColumns="False" EnableRowVirtualization="True" ItemsSource="{Binding  Vm_IGdaily}" Margin="23,24,68,72" RowDetailsVisibilityMode="VisibleWhenSelected"  SelectedCellsChanged="vm_GDailyDataGrid_SelectedCellsChanged">
        <DataGrid.Columns>
            <DataGridComboBoxColumn ItemsSource="{Binding Source={StaticResource EnumDataProvider}, UpdateSourceTrigger=PropertyChanged}"  Header="Purchase / Sale"  SelectedItemBinding="{Binding Currentenm_pr, Mode=TwoWay}" Width="150">
                <DataGridComboBoxColumn.EditingElementStyle>
                    <Style TargetType="{x:Type ComboBox}">
                        <EventSetter Event="SelectionChanged" Handler="yourCBSelectionChanged" />
                    </Style>
                </DataGridComboBoxColumn.EditingElementStyle>
            </DataGridComboBoxColumn>
            

            <DataGridTextColumn Binding="{Binding Currentenm_pr}"  Header="Select Enm_PR" Width="100"/>
            <DataGridTextColumn Binding="{Binding Trans_Category}"  Header="Purch/Sale Id" Width="100"/>
        </DataGrid.Columns>
    </DataGrid>

XAML.CS:

   /// <summary>
    /// Interaction logic for Enumtocombobox.xaml
    /// </summary>
    public partial class Enumtocombobox : Window
    {
        public Enumtocombobox()
        {
            InitializeComponent();
            this.DataContext = new Vm_GDaily();
        }

        private void yourCBSelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            var comboBox = sender as ComboBox;
            if (comboBox.SelectedItem != null)
            {
                var selectedItem = this.vm_GDailyDataGrid.CurrentItem;
                //vm_GDailyDataGrid.CancelEdit();
            }
        }

        private void vm_GDailyDataGrid_SelectedCellsChanged(object sender, SelectedCellsChangedEventArgs e)
        {
            vm_GDailyDataGrid.CancelEdit();
        }
    }

    public enum Enm_PR : int
    {
        Purchase = 1,
        Sales = 2,
        Return = 3
    }

    public class Vm_GDaily : INotifyPropertyChanged
    {
        public Enm_PR emupr { get; set; }
        public ObservableCollection<IGdaily> Vm_IGdaily { get; set; }
        public Enumitem EnumItem = new Enumitem { Enm_Purchase_Rets = Enm_PR.Purchase };
        public IGdaily Obj_IGdaily { get; set; }
        

        public Vm_GDaily()
        {
            Obj_IGdaily = new IGdaily();
            Vm_IGdaily = new ObservableCollection<IGdaily>() { new IGdaily() { GDaily_Id = 1, Trans_Category = 22 , Currentenm_pr = Enm_PR.Return}, new IGdaily() { GDaily_Id = 2, Trans_Category = 33, Currentenm_pr = Enm_PR.Sales } };


        }
        public class Enumitem
        {
            public Enm_PR Enm_Purchase_Rets { get; set; }
        }
        public Enumitem EnumClass
        {
            get { return this.EnumItem; }
        }

        public ObservableCollection<IGdaily> IGDailys
        {
            get { return Vm_IGdaily; }
            set { Vm_IGdaily = value; NotifyPropertyChanged(); }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        private void NotifyPropertyChanged([CallerMemberName] string PropertyName = "")
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(PropertyName));
            }
        }
    }



    public  class IGdaily : INotifyPropertyChanged
    {
        public int GDaily_Id { get; set; }
        public int Trans_Category { get; set; }
        private Enm_PR currentenm_pr;
        public Enm_PR Currentenm_pr
        {
            get { return currentenm_pr; }
            set
            {

                currentenm_pr = value;
                this.RaisePropertyChanged("Currentenm_pr");
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        public void RaisePropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
            {
                this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }

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Best Regards,

Yohann Lu

MSDN Community Support
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Proposed as answer by Bob Ding Friday, October 20, 2017 10:50 AM
Marked as answer by babucr Monday, October 23, 2017 5:45 PM

Tuesday, October 17, 2017 9:20 AM

Answer 2

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