CODEWITHSUNDEEP
c#wpf
SGDemo
SGDemo

Reputation: 129

Insert Datarow in a desired position In Wpf DataGrid

How do I insert a Row in a desired position in Wpf DataGrid?

I have tried:

GridCollection.Insert(2, (new ColumnCollection()))

In order to insert it at the 3rd index. Where GridCollection Is the ItemSource of the DataGrid. But it's adding row on the last of the Grid.

Upvotes: 1

Views: 1596

Answers (1)

Sheridan
Sheridan

Reputation: 69959

In WPF, we generally work with data rather than UI elements. Therefore, to do this in data, we'd just need to do this:

DataBoundCollection.Insert(2, newItem);

If you have correctly implemented the INotifyPropertyChanged Interface in your view model or code behind (or used a DependencyProperty in a UserControl or Window code behind) and data bound a collection of items to your DataGrid.ItemsSource, then the above code will result in a new item being added into the DataGrid in the third from top position:

<DataGrid ItemsSource="{Binding DataBoundCollection}" ... />

UPDATE >>>

I have no idea what you're doing, but I'm guessing that you have over complicated the situation. Ignore your current code and put this into a new project and then you will see that it works perfectly:

The XAML:

<DataGrid ItemsSource="{Binding Numbers}" MouseDoubleClick="DataGrid_MouseDoubleClick">
    <DataGrid.Columns>
        <DataGridTextColumn Binding="{Binding}" />
    </DataGrid.Columns>
</DataGrid>

The code behind:

private ObservableCollection<int> numbers = new ObservableCollection<int>();
public ObservableCollection<int> Numbers
{
    get { return numbers; }
    set { numbers = value; NotifyPropertyChanged("Numbers"); }
}

...

private void DataGrid_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
    Numbers.Insert(2, 10);
}

In the constructor:

Numbers = new ObservableCollection<int>() { 1, 2, 3, 4, 5 };

Now when you double click on the DataGrid, you'll see new rows being added at position 3, not at the beginning or end.

Upvotes: 1

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