How to trigger the events in SfDataGrid by using the commands defined in the ViewModel?

Events in .NET MAUI DataGrid can be fired by using commands with the help of Microsoft.Maui.Controls.Behaviors. The Behaviors allow you to convert events into commands. To use it, you need to install the CommunityToolkit.Maui NuGet package in your application, which can be found in the link below.

NuGet Link: https://www.nuget.org/packages/CommunityToolkit.Maui

Refer to the code example below, where Microsoft.Maui.Controls.Behaviors have been used to convert the SelectionChanged event in SfDataGrid into a command.

XAML

In the XAML page, use the EventToCommandBehavior within the DataGrid’s behavior to trigger the command through an event.

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:syncfusion="clr-namespace:Syncfusion.Maui.DataGrid;assembly=Syncfusion.Maui.DataGrid"
             xmlns:local="clr-namespace:SfDataGridSample"
             xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
             x:Class="SfDataGridSample.MainPage">

    <ContentPage.BindingContext>
        <local:EmployeeViewModel />
    </ContentPage.BindingContext>

    <syncfusion:SfDataGrid  x:Name="datagrid" Padding="10"
                            ItemsSource="{Binding Employees}"
                            AutoGenerateColumnsMode="None"
                            SelectionMode="Multiple"
                            DefaultColumnWidth="155">
        <syncfusion:SfDataGrid.Columns>
            <syncfusion:DataGridTextColumn MappingName="EmployeeID"
                                           HeaderText="Employee ID" />
            <syncfusion:DataGridTextColumn MappingName="Name"
                                           HeaderText="Name" />
            <syncfusion:DataGridTextColumn MappingName="IDNumber"
                                           HeaderText="ID Number" />
        </syncfusion:SfDataGrid.Columns>
        
        <syncfusion:SfDataGrid.Behaviors>
            <toolkit:EventToCommandBehavior
                EventName="SelectionChanged"
                Command="{Binding SelectionCommand}" />
        </syncfusion:SfDataGrid.Behaviors>
    </syncfusion:SfDataGrid>
</ContentPage>

ViewModel.cs

private Command selectionCommand;
public Command SelectionCommand
{
    get { return selectionCommand; }
    set { selectionCommand = value; }
}
 
public ViewModel()
{
    selectionCommand = new Command(onSelectionChanged);
}
 
private void onSelectionChanged()
{
   // Your logic here
}

The following screenshot shows the SelectionChanged event invoke a command in SfDataGrid.

Download the complete sample from GitHub

Conclusion

I hope you enjoyed learning how to trigger the events in SfDataGrid using the commands defined in the ViewModel.

You can refer to our .NET MAUI DataGrid feature tour page to learn about its other groundbreaking feature representations. Explore our .NET MAUI DataGrid Documentation to understand how to present and manipulate data.
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