Hello Akash,
As long as you're setting the DataGrid.SelectedItem to on of the items in the ItemsSource, yes. For example, assuming you set up the SelectedItem with two-way binding:
You can select an item programmatically using one of the items in the items source, this line selects the first item:
Demo
For example,if the view model had the following code:
public class BaseViewModel : INotifyPropertyChanged
{
private ObservableCollection<DataValue> displayItems;
private DataValue selectedDisplayItem;
public ObservableCollection<DataValue> DisplayItems
{
get => displayItems ?? (displayItems = GetDisplayItems());
set
{
if (displayItems == value) return;
displayItems = value;
OnPropertyChanged();
}
}
public DataValue SelectedDisplayItem
{
get => selectedDisplayItem;
set
{
if (selectedDisplayItem == value) return;
selectedDisplayItem = value;
OnPropertyChanged();
}
}
private ObservableCollection<DataValue> GetDisplayItems()
{
var srcDb = new ObservableCollection<DataValue>()
{
new DataValue { Id = "Data", Value = "Data", Caption = "Data"},
new DataValue { Id = "Select", Value = "Select", Caption = "Select"},
new DataValue { Id = "OperatorNo", Value = "OperatorNo", Caption = "OperatorNo"},
new DataValue { Id = "OperatorName", Value = "OperatorName", Caption = "OperatorName"}
};
return srcDb;
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
You could do the following to set up the DataGrid:
public partial class MainPage : ContentPage
{
private readonly BaseViewModel viewModel;
public MainPage()
{
InitializeComponent();
viewModel = new BaseViewModel();
BindingContext = viewModel;
SetUpDataGrid();
}
private void SetUpDataGrid()
{
grid_Source.AutoGenerateColumns = false;
grid_Source.SelectionUnit = DataGridSelectionUnit.Row;
grid_Source.SelectionStyle = new DataGridBorderStyle
{
BackgroundColor = Color.Orange,
BorderColor = Color.Orange,
BorderThickness = new Thickness(2)
};
var properties = typeof(DataValue).GetProperties();
foreach (PropertyInfo property in properties)
{
grid_Source.Columns.Add(new DataGridTemplateColumn
{
HeaderText = property.Name,
Name = property.Name,
CellContentTemplate = GetTemplate(property.Name, "Button", property.Name),
CellDecorationStyle = new DataGridBorderStyle
{
BorderThickness = new Thickness(0),
BorderColor = Color.Orange
}
});
}
// Set the ItemsSource
grid_Source.SetBinding(RadDataGrid.ItemsSourceProperty, new Binding("DisplayItems"));
// Set the SelectedItem using two-way binding
grid_Source.SetBinding(RadDataGrid.SelectedItemProperty, new Binding("SelectedDisplayItem", BindingMode.TwoWay));
// Now, you can programmatically set the selected item vbecause of the two-way binding
// For example, if you wanted to select the first item in the list
viewModel.SelectedDisplayItem = viewModel.DisplayItems.FirstOrDefault();
}
public DataTemplate GetTemplate(string psPropertyName, string controlType, string columnCaption)
{
return new DataTemplate(() =>
{
// Using StackLayout instead of View
var stackLayout = new StackLayout();
var oLabel = new Label()
{
BackgroundColor = Color.Transparent,
TextColor = Color.Black,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
oLabel.SetBinding(Label.TextProperty, psPropertyName);
//oLabel.Text = "Lorem Ipsum";
stackLayout.Children.Add(oLabel);
return stackLayout;
});
}
}
Then you'll end up with the following at runtime as soon as the page opens:
Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik
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