'Auto expand hierarchical data rows in Xamdatarrid

I have a Xamdatagrid having hierarchical data.I want to display all such records expended automatically.So that user doesn't have to click on + icon for each record.

c++sharpwpfxamdatagrid


Solution 1:[1]

You can handle the XamDataGrid's InitializeRecord event (or override OnInitializeRecord) like so:

    void grid_InitializeRecord(object sender, Infragistics.Windows.DataPresenter.Events.InitializeRecordEventArgs e)
    {
        grid.ExecuteCommand(DataPresenterCommands.ToggleRecordIsExpanded, e.Record);
    }

There's also DataPresenterCommands.ExpandRecord, which expands the grid's ActiveRecord.

Solution 2:[2]

The above answer is good but for those who prefer to see this as a defined behavior, here's another take at it:

public class AutoExpandXamDataGridRecordBehavior : Behavior<XamDataGrid>
{
    protected override void OnAttached()
    {
        if (AssociatedObject is XamDataGrid grid)
        {
            grid.InitializeRecord += OnInitializeRecord;
        }
    }


    protected override void OnDetaching()
    {
        if (AssociatedObject is XamDataGrid grid)
        {
            grid.InitializeRecord -= OnInitializeRecord;
        }
    }


    private void OnInitializeRecord(object sender, InitializeRecordEventArgs e)
    {
        ((XamDataGrid)sender).ExecuteCommand(DataPresenterCommands.ToggleRecordIsExpanded, e.Record);
    }
}

Solution 3:[3]

Here is the simpler solution that worked for me.

In the XAML:

<!-- namespace -->
xmlns:ig="http://schemas.infragistics.com/xaml/wpf"

<ig:XamDataGrid>
  <ig:XamDataGrid.FieldSettings>
    <ig:FieldSettings ExpandGroupByRecordsByDefault="True" />
  </ig:XamDataGrid.FieldSettings>
</ig:XamDataGrid>

However, note that the property name is "GroupByRecords", so maybe it doesn't work if your records are not grouped.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 user1676558
Solution 2 Glaucus
Solution 3 Arkane

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