RadGridView when source is RadDataPager + IQueryable/QueryableCollectionView:

RadGridView when source is RadDataPager + QueryableDataServiceCollectionView:

Why is the filter list empty when using IQueryable/QueryableCollectionView and how to fix this? Sample attached.

WPF Chart - Empty Values - Telerik UI for WPF

I have added link for EmptyPointBehaviour for wpf but it's available for windows, I want to implement same for wpf or uwp xaml UI. 

Hi,

I use this behavior to manage multiple selection on radgridview (with selection mode = "extended" and with GridViewSelectColumn)

It works but when I try to initialize the selection with some items at the end of initialization I receive the OnSelectionChanged that remove all the elements selected but the first.

public class GridViewMultiSelect : Behavior<RadGridView>
{
	protected override void OnAttached()
	{
		base.OnAttached();
		AssociatedObject.DataContextChanged += OnDataContextChanged;
		AssociatedObject.SelectedItems.CollectionChanged += OnSelectedItemsChanged;
		AssociatedObject.SelectionChanging += OnSelectionChanged;
		AssociatedObject.Items.CollectionChanged += OnItemsChanged;
	}

	private void OnSelectionChanged(object? sender, SelectionChangingEventArgs e)
	{
		
	}

	private void OnItemsChanged(object? sender, NotifyCollectionChangedEventArgs e)
	{
	}

	private void Select(IEnumerable<NsMisuraViewWithType> misure)
	{
		foreach (var item in misure)
		{
			AssociatedObject.SelectedItems.Add(item);
		}
	}

	private void OnDataContextChanged(object? sender, DependencyPropertyChangedEventArgs e)
	{
		if (AssociatedObject.DataContext is LoadedMeasurmentsVM viewModel)
		{
			viewModel.SelectAction = Select;
			SetSelectMeasurements();
		}
	}

	private void SetSelectMeasurements()
	{
		if (AssociatedObject.DataContext is LoadedMeasurmentsVM viewModel)
		{
			foreach (var item in AssociatedObject.SelectedItems)
			{
				if (viewModel.SelectedMeasurements.All(m => m.Misura.Id != ((NsMisuraViewWithType)item).Misura.Id))
				{
					viewModel.SelectedMeasurements.Add((NsMisuraViewWithType)item);
				}
			}
		}
	}

	private void OnSelectedItemsChanged(object? sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
	{
		SetSelectMeasurements();
	}

	protected override void OnDetaching()
	{
		base.OnDetaching();
		AssociatedObject.DataContextChanged -= OnDataContextChanged;
		AssociatedObject.SelectedItems.CollectionChanged -= OnSelectedItemsChanged;
	}
}

Hi,

in my project there is one RadGridView is present. Inside it there is GridViewComboBoxColumn but whenver I am selecting other item from that comboboxcell, binded property setter is not being called and as a result datacontext also remains same.

But whenever cell of that combobox column loses the focus property setter is called and as a result datacontext is fixed.

 So, I found one workaround that is I added UpdateSourceTrigger=PropertyChanged property for my DataMemberBinding like below:
DataMemberBinding="{Binding ****, UpdateSourceTrigger=PropertyChanged}"


So it started working whenever I am selecting other item from that comboboxcell, binded property setter is being called and as a result datacontext also updated.

But the issue is that whenever comboboxcell loses its focus then again binded property setter is called the second time, which I don't want.

How can I show animation like the following video in diagram control with pause and play option?

Which control is used in the following image?

Hi,

in my project there is one RadGridView is present. Inside it there is GridViewComboBoxColumn but whenver I am selecting other item from that comboboxcell, binded property setter is not being called and as a result datacontext also remains same.

But whenever cell of that combobox column loses the focus property setter is called and as a result datacontext is fixed.

Please suggest fixes for this one.

Also is there any way to manually update datacontext ? If yes then how to retrieve changed places and how to update them in datacontext using selection change listener?

Hi, I followed the steps on how to save / load filters on my c# WPF app from this link and it is working correctly

https://docs.telerik.com/devtools/wpf/controls/radgridview/filtering/how-to/howto-save-and-load-filter-settings

My grid is filtered and it works for all the columns (Just in case it wasn’t clear, the grid is indeed filtered by Source and Order Id). For all the fields that are strings, the filters look good when it shows:

But the fields that are enums, The header shows the icon as if a filter has been applied, but when it shows me the list, the values are not checked:

Code:

<telerik:RadGridView 
    x:Name="DesignQueueOrderGridView"
    ShowGroupPanel="False" 
    AutoGenerateColumns="False" 
    ItemsSource="{Binding FilteredDesignQueueOrderViewModels}"
    RowDetailsVisibilityMode="Visible"
    RowIndicatorVisibility="Collapsed"
    Grid.Row="1"
    VerticalAlignment="Top"
    RowStyle="{StaticResource RowStyleOdd}" 
    AlternationCount="2" 
    AlternateRowStyle="{StaticResource RowStyleEven}"
    CanUserSortColumns="False">

<telerik:GridViewDataColumn 
        UniqueName="ImageSource"
        Header="Source"
        HeaderTextAlignment="Center"
        DataMemberBinding="{Binding ImageSource}"
        IsReadOnly="True">

<telerik:GridViewDataColumn DataMemberBinding="{Binding UserId}" UniqueName="UserId"

                            HeaderTextAlignment="Center" 
                            Header="User Id" 
                            IsReadOnly="True"/>

              </telerik:GridViewDataColumn>

Enum:

[DataContract]
public enum ImageSource
{
    [EnumMember]
    Unknown = 0,

    [EnumMember]
    OnlineDesigner = 1

}

public void LoadColumnFilters(IList<FilterSetting> savedSettings)
{
    Application.Current.Dispatcher.Invoke(() =>
    {
        GridViewDataControl.FilterDescriptors.SuspendNotifications();

        foreach (FilterSetting setting in savedSettings)
        {
            Telerik.Windows.Controls.GridViewColumn column = GridViewDataControl.Columns[setting.ColumnUniqueName];

            if (column is null)
                continue;

            IColumnFilterDescriptor columnFilter = column.ColumnFilterDescriptor;

            if (setting.SelectedDistinctValues is not null)
            {
                foreach (string? distinctValue in setting.SelectedDistinctValues)
                {
                    columnFilter.DistinctFilter.AddDistinctValue(distinctValue);
                }
            }
        }

        GridViewDataControl.FilterDescriptors.ResumeNotifications();
    });
}

Thank you in advance! Juan