[Solved] RowLoaded event

[Jon Bergquist]

How do you determine the index of the row being loaded in the RowLoaded event?  I want to apply styling to the first row but there does not seem to be such a property in the RowLoadedEventArgs object.

Thanks

[Vlad]

Hi Jon,

You can use a bit different approach to achieve the same:

           bool shouldApply = true;
        private void RadGridView1_RowLoaded(object sender, RowLoadedEventArgs e)
        {
            if (e.Row.Record is DataRecord && ((DataRecord)e.Row.Record).Data != null &&
                shouldApply)
            {
                // your code goes here
                shouldApply = false;
            }
        }

Best wishes,
Vlad
the Telerik team

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[Jon Bergquist]

Thanks for that but I still need to determine the rows index because I only want to format the 1st row.   In general, how does one access the rows collection in code?

Thanks

Jon

[Vlad]

Hi Jon,

You can use our extension methods - RadGridView1.ChildrenOfType<GridViewRow>().

All the best,
Vlad
the Telerik team

Check out Telerik Trainer , the state of the art learning tool for Telerik products.

[Jon Bergquist]

Ok so here is what I've done.  Obviously, I can't call this until after all the rows are loaded so I tried setting an event for DataLoaded but apparently that gets called for every row.  So the first question is how do I know when all rows are loaded?

The other thing I had to do (simulating all records being loaded via a button click) is to write the following to pull the first row because  doing AppointmentGrid.ChildrenOfType<GridViewRow>().First() seems to return a header row.

    var rows = AppointmentGrid.ChildrenOfType<GridViewRow>().ToList();
           
            if(rows.Count > 1)
            {
                var row = rows[1];
                row.IsEnabled = false;
                row.Background = new SolidColorBrush(Colors.Orange);
            }

I'm spending way to much time to disable and format the first row when it should just be mygrid.rows[0].IsEnabled = false or I should be able to reference the row via an index.  Am I missing something here?

Thanks

[Vlad]

Hello Jon,

Due to rows virtualization even the default MS DataGrid control does not have such property (Rows[]).
We will do our best to provide better way for accessing rows and cells as soon as possible.

Best wishes,
Vlad
the Telerik team

Check out Telerik Trainer , the state of the art learning tool for Telerik products.

[Jon Bergquist]

Sounds like for now I will have to use the extension methods.  Is the following code the best way to grab the 1st row?

var rows = AppointmentGrid.ChildrenOfType<GridViewRow>().ToList();
           
            if(rows.Count > 1)
            {
                var row = rows[1];
                row.IsEnabled = false;
                row.Background = new SolidColorBrush(Colors.Orange);
            }

What would be the event to listen for when the grid completes the binding process so that I can call the aforementioned code?

Thanks

Jon

[Vlad]

Hello Jon,

Generally this event is DataLoaded however the grid visual elements are not yet created at this stage - you will need to force this:

    public partial class Page : UserControl
    {
        public Page()
        {
            InitializeComponent();

            var data = from i in Enumerable.Range(0, 10)
                       select new MyObject()
                       {
                           ID = i,
                           Name = String.Format("Name {0}",i)
                       };

            RadGridView1.ItemsSource = data;
            RadGridView1.DataLoaded += new EventHandler<EventArgs>(RadGridView1_DataLoaded);
        }

        void RadGridView1_DataLoaded(object sender, EventArgs e)
        {
            RadGridView1.Measure(new Size());

            var firstDataRow = RadGridView1.ChildrenOfType<GridViewRow>().FirstOrDefault();

            if (firstDataRow != null)
            {
                //
            }
        }
    }

    public class MyObject
    {
        public int ID { get; set; }
        public string Name { get; set; }
    }

All the best,
Vlad
the Telerik team

Check out Telerik Trainer , the state of the art learning tool for Telerik products.