Questions on UI for WPF Forum

0 answers

60 views

problem with column;s Is visible proprty in combination with a coun function

i am displaying two columns in the grid view and their visibilities (i.e. IsVisible Property) are controlled by corresponding check boxes. Also i have applied a count function in first column. so first time when i run the application it showing all the columns successfully but if i do Isvisible property of first column to false and then load the gridview with new data it shows an error in the handler of the INotifyPropertyCanhged Interface.

And the error is: "Object reference not set to an instance of an object."

please help me out.,....

public partial class PlaybackView : UserControl, INotifyPropertyChanged

{

int _count = 0;

public PlaybackView()

{

InitializeComponent();

}

#region Properties

public DataTable PlaybackTable

{

get { return (DataTable)GetValue(PlaybackTableProperty); }

set

{

SetValue(PlaybackTableProperty, value);

}

// Using a DependencyProperty as the backing store for DataTable. This enables animation, styling, binding, etc...

public static readonly DependencyProperty PlaybackTableProperty = DependencyProperty.Register("PlaybackTable", typeof(DataTable), typeof(PlaybackView));

//private static void OnPresentableTableChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)

//{

// PlaybackView playbackView = d as PlaybackView;

// if (playbackView != null)

// {

// playbackView.PlaybackLogView = new ListCollectionView(playbackView.PlaybackTable.DefaultView);

// }

//}

public List<string> GroupBy

{

get { return (List<string>)GetValue(GroupByTextProperty); }

set

{

SetValue(GroupByTextProperty, value);

}

public static readonly DependencyProperty GroupByTextProperty = DependencyProperty.Register("GroupBy", typeof(List<string>), typeof(PlaybackView), new UIPropertyMetadata(null, OnGroupByPropertyChanged));

private static void OnGroupByPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)

{

//PlaybackView playbackView = d as PlaybackView;

//if (playbackView != null)

//{

// playbackView.PlaybackLogView.GroupDescriptions.Add(new PropertyGroupDescription(playbackView.GroupBy));

//}

}

#endregion

#region INotifyPropertyChanged Members

public event PropertyChangedEventHandler PropertyChanged;

protected void OnPropertyChanged(string name)

{

PropertyChangedEventHandler handler = PropertyChanged;

if (handler != null)

{

handler(this, new PropertyChangedEventArgs(name));

}

#endregion

private void telrikDataGrid_DataLoading(object sender, Telerik.Windows.Controls.GridView.GridViewDataLoadingEventArgs e)

{

if (GroupBy.Count > 0)

{

if (_count > 0)

{

this.telrikDataGrid.GroupDescriptors.Clear();

}

ColumnGroupDescriptor descriptor = new ColumnGroupDescriptor();

descriptor.Column = this.telrikDataGrid.Columns[GroupBy[0]];

this.telrikDataGrid.GroupDescriptors.Add(descriptor);

++_count;

}

-------------------------------------------XAMl Code----------------------------------------------

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<Button Content="Load Data" HorizontalAlignment="Right" Click="Button_Click" />

<CheckBox x:Name="_check" Grid.Row="1" Content="Visibility" IsChecked="True"/>

<telerik:RadGridView Grid.Row="2" x:Name="_telerikGrid" ShowColumnFooters="True" AutoGenerateColumns="False" ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type Window}}, Path=Table}">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="PresentationName" DataMemberBinding="{Binding PresentationName}">

</telerik:GridViewDataColumn>

<telerik:GridViewDataColumn Header="LogLevel" DataMemberBinding="{Binding LogLevel}" IsVisible="{Binding ElementName=_check, Path=IsChecked}">

<telerik:GridViewDataColumn.AggregateFunctions>

<telerik:CountFunction Caption="Total Rows"/>

</telerik:GridViewDataColumn.AggregateFunctions>

</telerik:GridViewDataColumn>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</Grid>

GridView

asked on 26 Nov 2011

1 answer

176 views

rounding the SelectedValue to the nearest minute

I'm new to the RadDateTimePicker and I'm wondering if the control can allow me to
round the SelectedValue to the minute (to effectively zero-out the seconds and milliseconds portion).

<telerik:RadDateTimePicker SelectedValue="{Binding TheVisitDateTime, Mode=TwoWay}"/>

I need it for calling a stored procedure with a SMALLDATETIME Parameter (which I'm not allowed to change).
So before I consider writing a ValueConverter for this, I need to know if the RadDateTimePicker control exposes a property for rounding to the minute ?

Right now the milliseconds is being passed to the stored procedure which is causing a conversion error.
(because the @dVisitDateTime is SMALLDATETIME data type).

exec schma.CompleteClientVisit @iVisitID = 1, @dVisitDateTime = '2011-11-22 15:47:10.25039', ...other params...

Msg 8114, Level 16, State 1, Procedure CompleteClientVisit, Line 0

Error converting data type varchar to smalldatetime.

My goal is to call the stored procedure such as below to avoid the conversion error.

exec schma.CompleteClientVisit @iVisitID = 1, @dVisitDateTime = '2011-11-22 15:47:00', ...other params...

DateTimePicker

answered on 25 Nov 2011

4 answers

139 views

DayViewDefinition in behind code

Hi,

I would like to customize the DayViewDefinition in behind code (VB). When my app start, the information will be get from the database. Now the only way I found to do it...is in XAML...

<Horaire:DayViewDefinition DayStartTime="06:00"
                           DayEndTime="23:00"    
                           MajorTickLength="1h"    
                           MinorTickLength="5min"    
                           TimerulerMinorTickStringFormat=":{0:mm} "                                                                
                           TimerulerMajorTickStringFormat="{}{0:HH}:{0:mm} "    
                           MinTimeRulerExtent="4000"/>

Thanks for you help.

ScheduleView

answered on 25 Nov 2011

0 answers

93 views

how to bind rad combo box into wpf grid view

i have a grid view that contain rad combo box as column.
how can i bind rad combo box into wpf grid view from code behind using VB

GridView

asked on 25 Nov 2011

2 answers

111 views

Problem with Sorting on a Grid that has Nested Items

We have a problem with the RadGridView, when we have at our top level a collection full of "GroupDto"'s..
Below this we have "GroupMemberDto" Items...

so in our list we potentially have for example...

- GroupDto 1
          - GroupMemberDto 1
          - GroupMemberDto 2
+ GroupDto 2
- GroupDto 2
          - GroupMemberDto 3
          - GroupMemberDto 4
          - GroupMemberDto 5
          - GroupMemberDto 6
- GroupDto 4

So the problem occurs, when we have a top level item selected say "GroupDto1" and "GroupMemberDto1" selected....

then the problem occurs if we try to sort by one of the fields on GroupMemberDto... we get the following error
"Unable to cast object of type 'BusinessPort.Agility.Core.Shared.DataTransferObjects.GroupMemberDto' to type 'BusinessPort.Agility.Core.Shared.DataTransferObjects.GroupDto'."

a copy of the call stack we get is...

Telerik.Windows.Data.dll!Telerik.Windows.Data.FuncExtensions.ToUntypedFunc<BusinessPort.Agility.Core.Shared.DataTransferObjects.GroupDto,string>.AnonymousMethod__0(object item) Line 24 + 0x34 bytes C#

Telerik.Windows.Data.dll!Telerik.Windows.Data.FunctionComparer.Compare(object x, object y) Line 34 + 0x1c bytes C#

[External Code]

Telerik.Windows.Data.dll!Telerik.Windows.Data.KeyedCollection.IndexOf(object value) Line 224 + 0x1e bytes C#

Telerik.Windows.Data.dll!Telerik.Windows.Data.QueryableCollectionView.InternalIndexOf(object item) Line 1745 + 0x1a bytes   C#

Telerik.Windows.Data.dll!Telerik.Windows.Data.QueryableCollectionView.IndexOf(object item) Line 1735 + 0xc bytes    C#

Telerik.Windows.Data.dll!Telerik.Windows.Data.DataItemCollection.IndexOf(object value) Line 386 + 0x19 bytes C#

Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewDataControl.ScrollIntoViewRecursive(System.Windows.FrameworkElement element, System.Collections.Generic.Stack<

object> itemStack, System.Action<System.Windows.FrameworkElement> scrollFinishedCallback, System.Action scrollFailedCallback) Line 309 + 0x19 bytes C#

Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewDataControl.ScrollRowIntoViewInternal(object dataItem, System.Action<

System.Windows.FrameworkElement> scrollFinishedCallback, System.Action scrollFailedCallback) Line 254 C#

Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewDataControl.ScrollIntoViewAsync.AnonymousMethod__57() Line 95 + 0x2a bytes  C#

[External Code]

And some further details...

Locating source for 'c:\TB\102\WPF_Scrum\Release_WPF_40\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Scrolling.cs'. Checksum: MD5 {b7 2f 2f f ce 2e 64 af 4c 3d 12 d7 27 d7 88 35}

The file 'c:\TB\102\WPF_Scrum\Release_WPF_40\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Scrolling.cs' does not exist.

Looking in script documents for 'c:\TB\102\WPF_Scrum\Release_WPF_40\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Scrolling.cs'...

Looking in the projects for 'c:\TB\102\WPF_Scrum\Release_WPF_40\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Scrolling.cs'.

The file was not found in a project.

Looking in directory 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\crt\src\'...

Looking in directory 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\atlmfc\src\mfc\'...

Looking in directory 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\atlmfc\src\atl\'...

Looking in directory 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\atlmfc\include\'...

The debug source files settings for the active solution indicate that the debugger will not ask the user to find the file: c:\TB\102\WPF_Scrum\Release_WPF_40\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Scrolling.cs.

The debugger could not locate the source file 'c:\TB\102\WPF_Scrum\Release_WPF_40\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Scrolling.cs'.

Hope this all makes sense, Let me know if you have any suggestions on how we can solve this, or if you require further information?

GridView

answered on 25 Nov 2011

2 answers

82 views

Change group title to GridViewCheckBoxColumn

Hi,
When I group a GridViewCheckBoxColumn. the gridview show groupdescriptor as "true" or "false", i want show "Yes" and "No". How can i change that title?

Thanks

GridView

answered on 25 Nov 2011

1 answer

144 views

floatting pane not topmost after loadlayout

Hello,

I have some controls which contains each a raddocking.
I navigate to each other, then i save docking states on unload controls and reload layout on load controls.

When i save, floatting panel, after the relaoding, the window (toolwindow that contains pane) is no more topmost.

(the only pane that works as excpected is the one this is in a RadSplitContainer where InitialPosition is "FloatingOnly".

Aurore

Docking

answered on 25 Nov 2011

3 answers

342 views

Bug in RadGridView: CurrentCell not in sync with SelectedCells / SelectedRow

Hi,

I have a experienced a lot af problems when using SelectionUnit FullRow. The CurrentCell property does not seem to be in sync all the time with the SelectedCells / SelectedRow properties. I have frequent cases where this happens but these are difficult to reproduce.
I have one case though were I could always reproduce this: when cancelling the selection in the SelectionChanging event. When doing so the CurrentCell is still set to another row and when clicking this same cell a second time there are no Selection events any more.

I use version 2011.2.920.40 of the Telerik WPF library.

A sample solution can be downloaded here.

Sébastien

GridView

answered on 25 Nov 2011

1 answer

140 views

how to customize AppointmentSourceWarning text

Hi there,

Is there a way to replace the AppointmentsSource warning text?
Can I do that without the need to implement a custom ScheduleView theme?

Here is my situation - I have a RadScheduleView that is bound to the VM for Appointments.
When I load my form, the VM takes about 5 seconds to fetch the Appointment data.
Everything looks good and works fine after the 5 seconds load.
But, in the first 5 seconds there is a big "Please provide AppointmentsSource" and I don't know how to customize that message.

I hope to show a "Loading..." message instead of the default AppointmentsSource warning text.

Any ideas on a good approach for this situation?

Thanks in advance.

ScheduleView

answered on 25 Nov 2011

1 answer

165 views

AppointmentStyleSelector strange behavior

Hi

I'm using trial version of WPF controls (Q3 2011) and trying to implement custom appointment style as it described here
It works well until I want to resize an appointment (please see attached screenshot). The problem is that if I use custom AppointmentStyleSelector I can't resize Appointment rectangle by dragging top or bottom edge anymore, right and left edges are highlighted for resizing instead. Usage of OrientedAppointmentItemStyleSelector as AppointmentStyleSelector leads to the same results.
So could you please help me to figure out how to fix that issue?

Here is a link to the demo project http://dl.dropbox.com/u/3950376/TelerikAppointmentStyle.zip

Thanks,
Alexander

ScheduleView

answered on 25 Nov 2011