Questions on UI for WPF Forum

1 answer

78 views

Hi,

i use a RadDataform bind to a MVVM. This view contains some strings and an ObservableCollection<UserRollen>.
This Collection is bound to a GridView. In each row I have a button which should show me a Popup with details of
this Item.

How do I get the selected gridviewrow and the item which is selected?

Thanks
Best Regards
Rene

DataForm

answered on 07 Jun 2013

1 answer

116 views

RadMenu Child Popup/2nd Level Stretch Vertically

I am in the process of creating a user control based on the customization example of the RadMenu. I have placed the RadMenu in an expander on the left side of the UserControl and have it stretched vertically within the expander. This works great for the top of the RadMenu control but I haven't been able to change the submenu/child elements to stretch vertically as well. They always pop out directly to the right of the parent item (understandably). Is it possible to change this behavior?

Thanks so much.

Menu

answered on 07 Jun 2013

3 answers

256 views

raddocking - radsplit container performance issue

Hello! Yesterday I put in my wpf application, normally functioning, two radsplitcontainers under raddocking, and from this moment my application, during debug mode in vs2010, takes a lot of time for each operation, a simply onover on a radbutton takes 2-3 seconds to appear and the response to every action is very slow, meaning 5-6 seconds. Closing the window has no effect since all the application, even with this window closed, becomes very slow. The application is normally functioning until I open the window containing these elements.

If I compile my application and i Run the ".exe" no issue, all is working fine.

Anybody find the same problem? Is there any solution?

Here is my code of the splitcontainers with two radgriviews inside:

<telerik:RadDocking x:Name="radDockingst" HasDocumentHost="False" Background="Transparent">

<telerik:RadSplitContainer x:Name="radSplitContainerst" Orientation="Vertical">

<telerik:RadPaneGroup>

<telerik:RadPane Header="Pane Left 1" >

<telerik:RadGridView Height="auto" ScrollViewer.CanContentScroll="True" ScrollViewer.VerticalScrollBarVisibility="Visible" telerikControls:StyleManager.Theme="Office_Blue" Margin="0,5,0,0" x:FieldModifier="public" x:Name="radGridRighe" FilteringMode="FilterRow" FontSize="11" RowHeight="18" CanUserSortGroups="True" CanUserSortColumns="True" CanUserSelect="True" AlternationCount="1" FontFamily="Tahoma" CanUserDeleteRows="False" CanUserInsertRows="False" ShowGroupPanel="False" IsReadOnly="True" Grid.Row="0" IsManipulationEnabled="True" />

</telerik:RadPane>

</telerik:RadPaneGroup>

<telerik:RadPaneGroup Background="Transparent">

<telerik:RadPane Header="Pane Left 2" Background="Transparent">

<Grid.RowDefinitions>

</Grid.RowDefinitions>
</Grid>

</telerik:RadPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking>

Please help me, I can't nomore test my application in debug due to slow performance.

Docking

answered on 07 Jun 2013

1 answer

96 views

Nested bindings not always being updated

I have a RadGridView bound to a collection containing rows like the following:

public class RowViewModel : INotifyPropertyChanged

{

public RowViewModel(Deal deal)

{

Deal = deal;

}

public Deal Deal { get; private set; }

public event PropertyChangedEventHandler PropertyChanged;

public void UpdateBookingStatus()

{

Deal.IsBooked = true;

Deal.BookingTime = DateTime.UtcNow;

OnPropertyChanged("Deal");

}

protected virtual void OnPropertyChanged(string propertyName)

{

var handler = PropertyChanged;

if (handler != null)

handler(this, new PropertyChangedEventArgs(propertyName));

}

public class Deal

{

public string Id { get; private set; }

public DateTime ReceivedTime { get; private set; }

public DateTime? BookingTime { get; set; }

public bool IsBooked { get; set; }

public Deal(string id, DateTime receivedTime)

{

Id = id;

ReceivedTime = receivedTime;

}

My grid has 4 columns bound to each of the Deal properties, with bindings such as 'Deal.Id', 'Deal.ReceivedTime', etc.

All displays correctly, but when I call the UpdateBookingStatus method, which updates a couple of Deal properties and then fires a PropertyChanged event on the Deal itself, the Deal.BookingTime and Deal.IsBooked column values are not always refreshed in the grid. If I scroll the relevant rows out of view and then back into view, the values are updated correctly.

Is this expected? Am I not supposed to be setting nested bindings on Columns? Should the grid not listen for the OnPropertyChanged("Deal") event and update all columns using that property?

Thanks.
Marcus.

GridView

answered on 07 Jun 2013

1 answer

107 views

Theme of extended Control

I have problem when i want to implicitly set Theme for my whole Application...

Every RadRibbonButton Style change ok, but the style of my TRadRibbonButton which is extended from RadRibbonButton doesn't accept newly set theme...

There must be something i have forgotten...could you help me...

Thank you

General Discussions

answered on 07 Jun 2013

2 answers

363 views

Filtering boolean columns

I have set a default filter on a boolean column in my RadGridView, so that it should only display rows where that column's values are true. This works correctly, in that all the True rows are hidden.

However, because my backing collection only currently contains rows with a False value, the filter popup only shows the False checkbox option for selection, and doesn't show the True option that is actually checked. See attached image.

This of course means that my default filter doesn't make any sense to the user until some rows with a True value arrive, which in this case could be hours. They also can't clear the filter and then re-enable it for True values, as the True checkbox isn't there.

Given this is a boolean column, and there should always be True and False options, surely both options should always display as checkable options? I understand this behaviour for columns that have infinite possible values, but not so much for finite values such as those in bool or enum columns.

Any suggestions for how I could tweak this for the desired behaviour? I note that enum columns display all possible values in the Filter dropdown selectors (but not as checkable boxes) - even enabling this for bool columns would be useful.

Thanks in advance.

Marcus.

GridView

answered on 07 Jun 2013

3 answers

69 views

Appointment and Special slot cover

Hello,
I have an appointment for example from 2013.05.30. 9:00 to 2013.05.31. 16:00, and i have special slot for non working hours from 2013.05.30. 17:00 to 2013.05.31. 8:00.
I wouldn't like to divide the appointment into two parts, but I would like to cover it with a special slot.
How could I do that?

ScheduleView

answered on 07 Jun 2013

1 answer

130 views

Binding data to barcode (WPF)

Hai

I need how to bind the data to a barcode(WPF) from entity context.

for example
using(nothwindentites context = new nothwindentites ())
{
}

by using this context i want to bind the CustomerID to Barcode from CustomerTable.

thanks

BarCode

answered on 07 Jun 2013

1 answer

53 views

MinutesOfHour

Can someone tell me what this property represents? I am using this through code but it would be nice to get the control representing this, also.

Can I add an array of values like [1, 15, 45] to represent I want this scheduled on the 1st, 15th and 45th minute of every hour?

A working example would rock my world.
Thanks,
Joel.

ScheduleView

answered on 07 Jun 2013

5 answers

303 views

Columns bound to enum values produce occasional binding errors

I have a RadGridView containing 20+ columns, a couple of which are bound to Enum properties. Both row and column virtualization is turned on. When I scroll horizontally to bring the enum columns into view, I often get binding errors on the enum columns such as:

System.Windows.Data Error: 6 : 'StringFormat' converter failed to convert value 'Cleared' (type 'BookingStatus'); fallback value will be used, if available. BindingExpression:Path=Value; DataItem='GridViewCell' (Name=''); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String') FormatException:'System.FormatException: Format String can be only "G", "g", "X", "x", "F", "f", "D" or "d".

at System.Enum.ToString(String format)

at System.Enum.ToString(String format, IFormatProvider provider)

at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args)

at System.String.Format(IFormatProvider provider, String format, Object[] args)

at System.Windows.Data.BindingExpression.ConvertHelper(IValueConverter converter, Object value, Type targetType, Object parameter, CultureInfo culture)'

My cell template for the Enum columns is very simple, with no explicit StringFormat:

<DataTemplate x:Key="Cell.Enum" DataType="telerik:GridViewCell">

<TextBlock Text="{Binding Value, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type telerik:GridViewCell}}}" />

</DataTemplate

The values for the columns actually do end up displaying correctly, with the enum values such as 'Cleared' all ok.

I suspect something is wrong with the virtualization - perhaps a column for another type is being reused for my Enum column as I scroll across, and that column's template is being applied to my enum column before all the column's settings are updated to the new column type?

Thanks in advance for your help, this is a fairly big issue for us as it's affecting scroll performance considerably.

I'm using version 2012.3.1017.40.

GridView

answered on 07 Jun 2013