Hi,
DataGrid selected item is null ? Why?private void OnResultsDataGridSelectionChanged(object sender, Telerik.XamarinForms.DataGrid.DataGridSelectionChangedEventArgs e)
{
var resultsDataGrid = sender as Telerik.XamarinForms.DataGrid.RadDataGrid;
if (resultsDataGrid != null)
{
var selectedItem = resultsDataGrid.SelectedItem.ToString();
if(selectedItem != null)
{
}
}
} <telerikDataGrid:RadDataGrid Grid.Row="4" Grid.Column="0" x:Name="resultsDataGrid" Margin="10"
AutoGenerateColumns="False" SelectionChanged="OnResultsDataGridSelectionChanged">2 Answers, 1 is accepted
Hello Daniel,
Since you're using SelectionChanged event handler, the best approach here is to utilize the DataGridSelectionChangedEventsArgs - the event args provides AddedItems collection which holds the newly selected item, here is the modified event handler:
private void OnResultsDataGridSelectionChanged(object sender, Telerik.XamarinForms.DataGrid.DataGridSelectionChangedEventArgs e)
{
var resultsDataGrid = sender as Telerik.XamarinForms.DataGrid.RadDataGrid;
if (resultsDataGrid != null)
{
var selectedItem = e.AddedItems.First();
if (selectedItem != null)
{
}
}
}Just need to add System.Linq; namespace in order to resolve First() method:
using System.Linq;I hope I was of help.
Regards,
Yana
Progress Telerik
Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.
Rank 1
Silver
Bronze
Hi Daniel,
If you'd like to get the selected item in a MVVM manner, you would need to bind SelectedItem property of the DataGrid to a property inside the ViewModel of the data item type. Let's take as a base the example in the DataGrid Selection topic - DataGrid is bound to a collection of Person objects.
First, the ViewModel class should implement INotifyPropertyChanged interface ( we have a base class that implements it called NotifyPropertyChangedBase), then add a SelectedPerson property:
public class ViewModel : Telerik.XamarinForms.Common.NotifyPropertyChangedBase
{
private Person selectedPerson;
public ViewModel()
{
this.People = new ObservableCollection<Person>()
{
new Person { Name = "Kiko", Age = 23, Department = "Production" },
new Person { Name = "Jerry", Age = 23, Department = "Accounting and Finance"},
new Person { Name = "Ethan", Age = 51, Department = "Marketing" },
new Person { Name = "Isabella", Age = 25, Department = "Marketing" },
new Person { Name = "Joshua", Age = 45, Department = "Production" },
new Person { Name = "Logan", Age = 26, Department = "Production"},
new Person { Name = "Aaron", Age = 32, Department = "Production" },
new Person { Name = "Elena", Age = 37, Department = "Accounting and Finance"},
new Person { Name = "Ross", Age = 30, Department = "Marketing" },
};
}
public ObservableCollection<Person> People { get; set; }
public Person SelectedPerson
{
get { return this.selectedPerson; }
set
{
if(this.selectedPerson != value)
{
this.selectedPerson = value;
this.OnPropertyChanged();
}
}
}
}Then, bind SelectedPerson to SelectedItem when defining the DataGrid:
<telerikDataGrid:RadDataGrid x:Name="dataGrid"
ItemsSource="{Binding People}"
SelectedItem="{Binding SelectedPerson,Mode=TwoWay}" />I hope I was of help.
Regards,
Yana
Progress Telerik
Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.