Questions on UI for WPF Forum

2 answers

334 views

RadGridView, Paging, QueryableCollectionView & EntityFramework

Hello All,

I'm trying to setup the following scenario, running version 2013.2.724.40:

On my ViewModel, I have a QueryableCollectionView, with an EntityFramework IQueryable as it's source
I have a DataGrid, bound to this QueryableCollectionView
I have a DataPager, linked to this DataGrid

<telerik:RadGridView x:Name="radGridView"

ItemsSource="{Binding MyQueryableCollectionView}"

AutoGenerateColumns="True" />

<telerik:RadDataPager

Source="{Binding Items, ElementName=radGridView}"

PageSize="10" DisplayMode="All" />

When I run this app, everything looks fine:

A query is ran on the db, selecting the top 10 records for the first page
The DataGrid shows the first page, 10 records
The DataPager calculates the correct number of pages

However, when I move to the second, third, .. page, the page is empty.
No new query is ran on the db to select the next 10 records.

Is this kind of scenario not supported out of the box?

Notes:

It does work when I load the entire record set when creating the QueryableCollectionView
(of course, I do NOT want to do this, that's why I use paging)
I also tried by binding the DataPager Source to the QueryableCollectionView, but this has the same behavior.

<telerik:RadGridView

         ItemsSource="{Binding MyQueryableCollectionView}"

         AutoGenerateColumns="True" />

<telerik:RadDataPager

         Source="{Binding MyQueryableCollectionView}"

         PageSize="10" DisplayMode="All" />

GridView

answered on 20 Sep 2013

1 answer

170 views

RadCarthesianChart Grid Background not set

Hello

I'm trying to set the background for my chart to a specific backgroundcolor. But I don't want the whole chart to be that color, just the grid itself. But if I set that background, the color doesn't change.

<telerik:RadCartesianChart.Grid>

<telerik:CartesianChartGrid MajorLinesVisibility="X" MajorXLineStyle="{StaticResource StripLinesStyle}" Background="#D8D3D0"/>

</telerik:RadCartesianChart.Grid>

Also I was trying to set the color of the axis, and I couldn't find that option. Attached is an image of what I'm trying to make, not minding the graphs itself ;)

Thanks
Waut

ChartView

answered on 20 Sep 2013

5 answers

185 views

WPF - RadGridView(Grouped Columns) - Export Excel Issue - Horizontal Scrolling

Hi there,

I'm facing to a weird issue. I have a RadGridView that is using Grouper Headers and Horizontal Scrolling.

When I want to export the grid without have been playing with the scrolling, the grouped headers are not exported correctly in the excel file. It is like if only the visible groups on the screen are able to be exported.

In opposite if I play with the scrolling before exporting the grid, the grouped headers will be correctly exported.

Have you got any idea about this issue?

Thank you in advance.

Alain

<telerik:RadGridView x:Name="StudyDisplayAllDataGrid"

AutoGenerateColumns="False" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"

AutoExpandGroups="True" RowIndicatorVisibility="Collapsed" ShowGroupPanel=

"False"

IsReadOnly="True" GroupRenderMode="Flat"

Visibility="{Binding AnyProduct, Converter={StaticResource booleanToVisibleConverter}}"

ItemsSource="{Binding StudyProductsGrid}"/>

Using stream As IO.Stream = dialog.OpenFile()

StudyDisplayAllDataGrid.Export(stream, New GridViewExportOptions() With { _

.Format = ExportFormat.Html, _

.ShowColumnHeaders = True, _

.ShowColumnFooters = True, _

.ShowGroupFooters = False _

})

End Using

General Discussions

answered on 20 Sep 2013

1 answer

131 views

Add tooltips to Polar Chart

Hi,

I am testing some controls including the polar chart, I load some data from a database into a DataTable like this:

DataTable dtData = new DataTable();

dtData.Columns.Add(new DataColumn("Name", typeof(string)));

dtData.Columns.Add(new DataColumn("Value", typeof(double

)));



DataRow drCost;



RadarLineSeries rs = new RadarLineSeries();



foreach (DataRow dr in dtData.Rows)

{

	CategoricalDataPoint dp = new CategoricalDataPoint();

	dp.Category = dr["Name"].ToString();

	dp.Value = double.Parse(dr["Value"].ToString());



	rs.DataPoints.Add(dp);

}



rs.Stroke = new SolidColorBrush(Color.FromRgb(37, 160, 219));



RadarChartDemo.Series.Add(rs);

And the result is something like the attached image.

I would like to add tooltips to each point to see the values, does anyone knows how can I do this?

Thanks,

Alberto

Chart

answered on 20 Sep 2013

3 answers

138 views

Timeline ViewDefinition with appointments stretched to cover complete day

Hi,

Is it possible to create a visualization like screenshot attached.

I'm able to create a custom timeline view definition, displaying the weeks, correct days, snapping ... however the length of the appointments is still proportional to the duration.
I want the same visualization for the appointment as in the month view definition.

How do I achieve this?

Thanks,

Koen

ScheduleView

answered on 20 Sep 2013

5 answers

225 views

PivotGrid with complex types.

Hi,
We are using PivotGrid with localdatasourceProvider connected to an Entity Framework DbContext.
We are using a navigation property to group the datas.
Pivotgrid display the name of our object returned by .toString().
We would like to display one property of this object for our datatemplate.

What is the best solution ?

Thanks for all, Tristan

PivotGrid

answered on 20 Sep 2013

6 answers

1.3K+ views

FrameworkElementFactory.AddHandler not working

I am using a RadPropertyGrid. I am trying to use the AutoGeneratingPropertyDefinition event to provide a custom EditorTemplate with a textbox. I want to add a handler to the TextChanged event of the textbox but my event handler is never being called.

Relevant code:

public void GeneratingProperty(AutoGeneratingPropertyDefinitionEventArgs e)

{

try

{

AvailableProperties property = (AvailableProperties)Enum.Parse(typeof(AvailableProperties), e.PropertyDefinition.Binding.Path.Path);

if (IsAvailable(item.GetAvailableProperties(), property))

{

switch (property)

{

case AvailableProperties.Title:

FrameworkElementFactory textBoxFactory = new FrameworkElementFactory(typeof(TextBox));

textBoxFactory.AddHandler(TextBox.TextChangedEvent, new TextChangedEventHandler(TitleTextChanged));

textBoxFactory.SetValue(TextBox.BackgroundProperty, System.Windows.Media.Brushes.Tomato);

textBoxFactory.SetValue(TextBox.BorderBrushProperty, System.Windows.Media.Brushes.Transparent);

textBoxFactory.SetBinding(TextBox.TextProperty, new Binding("Title"));

DataTemplate template = new DataTemplate();

template.VisualTree = textBoxFactory;

template.Seal();

e.PropertyDefinition.EditorTemplate = template;

e.PropertyDefinition.OrderIndex = 0;

e.PropertyDefinition.DisplayName = "Title";

e.PropertyDefinition.Description = "The title of the attribute. Can only contain letters, numbers, and underscores.";

break;

default:

// other properties go in case statements above here

break;

}

else

{

e.Cancel = true;

}

catch

{

e.Cancel = true;

}

public void TitleTextChanged(object sender, TextChangedEventArgs e)

{

if (sender is TextBox)

{

TextBox titleTextBox = (TextBox)sender;

int caretIndex = titleTextBox.CaretIndex;

string newValue = titleTextBox.Text;

item.Title = newValue;

ApplyCorrectedValue(newValue, item.Title, titleTextBox, caretIndex);

NotifyOfPropertyChange(() => MappingsPanel);

}

else

{

Logger.Log("TitleChanged: source must be a TextBox");

throw new ArgumentException("source must be a TextBox");

}

I am using the 2012.2.912.35 version of the telerik dlls

PropertyGrid

answered on 20 Sep 2013

1 answer

38 views

Please it's urgent

Hiya, I'm sorry but without setting a precedent, I know that you are very busy, I would need a response as soon as possible:
http://www.telerik.com/community/forums/wpf/general-discussions/calling-a-udf-for-populating-a-radgridview-fails.aspx

I really very appreciate your help

General Discussions

answered on 20 Sep 2013

1 answer

97 views

Calling a UDF for populating a RadGridView, fails

Hi ya, I'm trying to populate one RadGridView using an UDF Sql Server which waits a parameter but it doesn't work:

XAML:

<telerik:RadGridView x:Name="dgvHistoricoOR" HorizontalAlignment="Left" FontFamily="Segoe UI"

FontSize="12" FontStyle="Normal"

Margin="10,44,-185,0" VerticalAlignment="Top" Height="175" Width="437"

ColumnWidth="SizeToCells" Grid.ColumnSpan="2" Grid.RowSpan="2">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding ord_repalpha}" Header="{Resx RadGridViewOr_Or}"

Width="40"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding F_Alta}" Header="{Resx RadGridViewOr_Alta}"

Width="60"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding F_Cierre}" Header="{Resx RadGridViewOr_Cierre}"

Width="60"/>

</telerik:RadGridView.Columns>

Code-behind:

ada = New SqlDataAdapter("SELECT * FROM OR_Historico_Por_Cliente(@par1)", aBD.connection)

ada.SelectCommand.Parameters.AddWithValue("@par1", Documento)

ada.Fill(ds, "OR_Historico_Por_Cliente")

Me.dgvHistoricoOR.ItemsSource = "OR_Historico_Por_Cliente"

Me.dgvHistoricoOR.DataContext = ds

OR_Historico_Por_Cliente('') UDF Sql2k8 returns a TABLE

I don't get data, my Grid remains empty

I wonder, when I call Fill method, should I include the value for the parameter???

Help!

General Discussions

answered on 20 Sep 2013

1 answer

231 views

RadListBox drag and drop wierd behaviour

I'm working on a screen with WPF which has 3 listbox (list1, list2, list3), and i can drag items from list1 to list2 and list2 to list3 or even list1 to list3, and i can do it reversely.

I had to change the listbox (list3) to radListBox, because i wanted to implement the reorder within this list, i managed that drag and drop worked, and it did. but when a i wanted to drag an item from list3 (radlistbox), i got null in this variable :
" var data = ((DataObject)args.Data).GetData("DragData") as UcFileColumn", which UcFileColumn is a user control that i wanna cast with to drop in other lists. So insted od using "data" i thought using then selectedItem property to take the item dragged, and it works. Still one mysterious behaviour occured, is that when i dropped items in the lists3 (radListBox) and then drag them back into the lists(list1 or list2), and i wanted to dropped them back, the list prevent me to drop, i think when i remove item from teh radlistbox, the allowdrag dosent set anymore !!!!, is that because i used SelectedItem, if yes how should i get the element dragged from (DataObject)args.Data).GetData..

here is my XAML CODE :

<UserControl.Resources>

<Style x:Key="DraggableListBoxItem" TargetType="controls4:RadListBoxItem">

<Setter Property="dragDrop:DragDropManager.AllowCapturedDrag" Value="True" />

<Setter Property="dragDrop:DragDropManager.AllowDrag" Value="True" />

</Style>

</UserControl.Resources>

<ListBox Grid.Row="2" x:Name="List1" ItemsSource="{Binding Source1, Mode=TwoWay}" AllowDrop="True" IsSynchronizedWithCurrentItem="True"

Style="{StaticResource ListBoxStyleMenu}" Margin="2,2,2,2"

VerticalAlignment="Stretch" HorizontalContentAlignment="Center" HorizontalAlignment="Stretch">

<ListBox.ItemsPanel>

<ItemsPanelTemplate>

<UniformGrid Columns="2" />

</ItemsPanelTemplate>

</ListBox.ItemsPanel>

<ListBox.ItemContainerStyle>

<Style TargetType="{x:Type ListBoxItem}">

<Setter Property="Focusable" Value="False"/>

<Setter Property="Margin" Value="0,5,0,5" />

</Style>

</ListBox.ItemContainerStyle>

</ListBox>

<ListBox Grid.Row="2" x:Name="List2" ItemsSource="{Binding Source2, Mode=TwoWay}" AllowDrop="True" IsSynchronizedWithCurrentItem="True"

Style="{StaticResource ListBoxStyleMenu}" Margin="2,2,2,2"

VerticalAlignment="Stretch" HorizontalContentAlignment="Center" HorizontalAlignment="Stretch">

<ListBox.ItemsPanel>

<ItemsPanelTemplate>

<UniformGrid Columns="2" />

</ItemsPanelTemplate>

</ListBox.ItemsPanel>

<ListBox.ItemContainerStyle>

<Style TargetType="{x:Type ListBoxItem}">

<Setter Property="Focusable" Value="False"/>

<Setter Property="Margin" Value="0,5,0,5" />

</Style>

</ListBox.ItemContainerStyle>

</ListBox>

<controls4:RadListBox x:Name="List3" ItemsSource="{Binding Source3}" AllowDrop="False" SelectedItem="{Binding SourceSelected, Mode=TwoWay}"

VerticalAlignment="Stretch" HorizontalContentAlignment="Center" HorizontalAlignment="Stretch"

Margin="2,2,2,2" ItemContainerStyle="{StaticResource DraggableListBoxItem}">

<controls4:RadListBox.DragDropBehavior>

<behaviors:ListBoxDragDropBehavior AllowReorder="True" dragDrop:DragDropManager.TouchDragTrigger="TapAndHold" />

</controls4:RadListBox.DragDropBehavior>

</controls4:RadListBox>

I'm looking forward for your response

ListBox

answered on 20 Sep 2013