Questions on UI for WPF Forum

2 answers

163 views

Hello,

I'm trying to implement drag&drop in a radgridview.

I'm using this how to :
http://www.telerik.com/help/wpf/dragdropmanager-howto-draganddrop-within-radgridview.html

Everything is ok, but as soon as I add rowstyle code block, my rows are displayed blank (scrollbar remains visible).

This code is ok :

<telerik:RadGridView ItemsSource="{Binding Object.Details.Attributes}"

AutoGenerateColumns="True"

ScrollViewer.CanContentScroll="True"

ScrollViewer.HorizontalScrollBarVisibility="Visible"

ScrollViewer.VerticalScrollBarVisibility="Visible"

CanUserDeleteRows="False"

CanUserInsertRows="False"

CanUserReorderColumns="False"

CanUserResizeRows="False"

CanUserFreezeColumns="False"

CanUserSortColumns="False"

IsFilteringAllowed="False"

RowIndicatorVisibility="Collapsed"

ShowGroupPanel="False"

DataLoadMode="Asynchronous"

IsReadOnly="{Binding IsEditing, Converter={StaticResource InvertBoolConverter}}"

EnableRowVirtualization="True"

FrozenColumnCount="1"

AllowDrop="True"

behaviors:RowReorderBehavior.IsEnabled="True"

BeginningEdit="Attributes_RadGridView_BeginningEdit"

>

<telerik:RadGridView.Resources>

<DataTemplate x:Key="DraggedItemTemplate">

<StackPanel>

<StackPanel Orientation="Horizontal">

<TextBlock Text="Dragging:" />

<TextBlock Text="{Binding CurrentDraggedItem}"

FontWeight="Bold" />

</StackPanel>

<StackPanel Orientation="Horizontal">

<TextBlock Text="{Binding CurrentDropPosition}" FontWeight="Bold" MinWidth="45" />

<TextBlock Text=", (" Foreground="Gray" />

<TextBlock Text="{Binding CurrentDraggedOverItem}" />

<TextBlock Text=")"

Foreground="Gray" />

</StackPanel>

</DataTemplate>

</telerik:RadGridView.Resources>

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="Attribute" DataMemberBinding="{Binding Attribute.TechName}" IsReadOnly="True"/>

.......

<telerik:GridViewDataColumn Header="Length" DataMemberBinding="{Binding Attribute.Details.LengthInternal}" IsReadOnly="True"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView

>



But with this code, rows are displayed blank (only headers and scrollbars are visibles) :




<telerik:RadGridView ItemsSource="{Binding Object.Details.Attributes}"
                        AutoGenerateColumns="True"
                        ScrollViewer.CanContentScroll="True"
                        ScrollViewer.HorizontalScrollBarVisibility="Visible"
                        ScrollViewer.VerticalScrollBarVisibility="Visible"
                        CanUserDeleteRows="False"
                        CanUserInsertRows="False"
                        CanUserReorderColumns="False"
                        CanUserResizeRows="False"
                        CanUserFreezeColumns="False"
                        CanUserSortColumns="False"
                        IsFilteringAllowed="False"
                        RowIndicatorVisibility="Collapsed"
                      
                        ShowGroupPanel="False"
                        DataLoadMode="Asynchronous"
                        IsReadOnly="{Binding IsEditing, Converter={StaticResource InvertBoolConverter}}"
                        EnableRowVirtualization="True"
                        FrozenColumnCount="1"
                        AllowDrop="True"
                        behaviors:RowReorderBehavior.IsEnabled="True"
                        BeginningEdit="Attributes_RadGridView_BeginningEdit"
                     >
 
    <telerik:RadGridView.Resources>
        <DataTemplate x:Key="DraggedItemTemplate">
            <StackPanel>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Dragging:" />
                    <TextBlock Text="{Binding CurrentDraggedItem}"
                  FontWeight="Bold" />
                </StackPanel>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="{Binding CurrentDropPosition}" FontWeight="Bold" MinWidth="45" />
                    <TextBlock Text=", (" Foreground="Gray" />
                    <TextBlock Text="{Binding CurrentDraggedOverItem}" />
                    <TextBlock Text=")"
                  Foreground="Gray" />
                </StackPanel>
            </StackPanel>
        </DataTemplate>
    </telerik:RadGridView.Resources>
     
 
 
 
    <telerik:RadGridView.Columns>
 
        <telerik:GridViewDataColumn Header="Attribute" DataMemberBinding="{Binding Attribute.TechName}" IsReadOnly="True"/>
           .....
        <telerik:GridViewDataColumn Header="Length" DataMemberBinding="{Binding Attribute.Details.LengthInternal}" IsReadOnly="True"/>
    </telerik:RadGridView.Columns>
 
    <telerik:RadGridView.RowStyle>
        <Style TargetType="telerik:GridViewRow">
            <Setter Property="Background" Value="Red"/>
            <Setter Property="telerik:DragDropManager.AllowDrag" Value="True" />
        </Style>
    </telerik:RadGridView.RowStyle>
 
</telerik:RadGridView>

Do you know what is the root cause ?

Thanks in advance,

Laurent

GridView

answered on 23 Sep 2013

7 answers

242 views

ChartSeriesProvider change SeriesColor at runtime

Hi,
I'm using MvvM and the RadCartesianChart.
I bind the series to a list of business objects of that kind:

public class MainViewModel

{

public ObservableCollection<DataObject> Data{get;set;}

...

}

public class DataObject

{

public string Name { get; set; }

public ObservableCollection<DataPair> Data { get; set; }

}

public class DataPair

{

public DateTime Time { get; set; }

public double Value { get; set; }

}

In my View:

<telerik:RadCartesianChart.SeriesProvider>

<telerik:ChartSeriesProvider Source="{Binding Data}">

<telerik:ChartSeriesProvider.SeriesDescriptors>

<telerik:CategoricalSeriesDescriptor ItemsSourcePath="Data" ValuePath="Value" CategoryPath="Time">

<telerik:CategoricalSeriesDescriptor.Style>

<Style TargetType="telerik:LineSeries">

<Setter Property="RenderMode" Value="Light"/>

</Style>

</telerik:CategoricalSeriesDescriptor.Style>

</telerik:CategoricalSeriesDescriptor>

</telerik:ChartSeriesProvider.SeriesDescriptors>

</telerik:ChartSeriesProvider>

</telerik:RadCartesianChart.SeriesProvider>

How is it possible to change the color of each series at runtime.
If I put a Setter on the Stroke Property I got an exception: NullReferenceException

Regards Markus

ChartView

answered on 23 Sep 2013

2 answers

249 views

Creating RadChart Programmatically

I would like to know if there is some sample code to create a RadChart programmatically.

I only have this code in the xaml file:

<telerik:RadChart Content="RadChart" HorizontalAlignment="Left" Margin="10,455,0,10" Grid.Row="1" Width="791"/>

And I would like to create the series, configure the axes, bind the chart to a datatable where I have the data that I want to show, in the cs file.

Thanks,

Alberto

Chart

answered on 20 Sep 2013

2 answers

63 views

RTB in version 11.3

I have tried to ask a question on another thread, but have not gotten any support, so am generating a new thread. I have seen the example, and have based a project on it, but some features are not the same as the sample so not working. This is at least partially due to the version, but I do not currently have the ability to work on a newer version:

1) CurrentEditingContext is not the same, being a property with the current context, as opposed to a class with header and footer context properties, and there is no Table context. This also means that there is no possibility of INotifyPropertyChanged working for showing the Table and Header/Footer ribbons. Not sure what the best approach is to deal with showing these menus. Probably had an old version that worked.

2) The sample code does not contain the implementation for the content of the Insert Merge Field, so not sure what would be considered ideal. In addition, all the Mailings buttons are all disabled so cannot be sure if implementation is working

I tried to included the project, but changing the extension from zip to gif did not work. Give me a way to send the project and I will.

Thanks so much for the help.

RichTextBox

answered on 20 Sep 2013

1 answer

144 views

RadDiagramToolbox resize Width problem

<telerik:RadSplitContainer x:Name="Split" Width="300" >

<telerik:RadPaneGroup DockPanel.Dock="Top" >

<telerik:RadPane x:Name="radPane" Header="Elements" >

<extensions:RadDiagramToolbox

telerik:StyleManager.Theme="Windows8"

Title="Gallery"

DataContext="{StaticResource model}"

ItemsSource="{Binding Galleries}"

ItemTemplate="{StaticResource ToolboxGroupTemplate}"

Width="{Binding Width, ElementName=radPane, Mode=TwoWay}" />

</telerik:RadPane

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

Hi,I am using RadDiagramToolbox in code above.

So, the problem occurs when I try to move splitter of SplitContainer.
Width of RadPane and RadDiagramToolbox change normal, but Width of RadDiagramToolbox
content have no changes.

Regads,
Yuriy
.

Diagram

answered on 20 Sep 2013

1 answer

43 views

Stop document history - coloring document text

Hi,

is there any possibility to stop history? In my case user writes into the radrichtextbox. If he writes some word/phrase, event DocumentContentChange is thrown and I make at this point something like:
Go throw the document and try to find "my" (from dictionary) words - set CaretPosition on the beginning of the document and then go step by step, word by word throw the document, setting selectionstart and selectionend and getting words from selection. If word is in my dictionary, set its foreground color.
After setting text foreground of whole document, colors are as shoud be. But problem is, that user cannot use undo/redo, because in history there are all selections used for coloring foregrounds. I need to make something like History.Stop()/Start() or finally set history from the beginning (but there is no setter).
Any idea how to work better with history? Any better solutions for my case? Maybe I shoud set foreground somehow a better way...

Thanks so much for help.

RichTextBox

answered on 20 Sep 2013

0 answers

105 views

Row move event

Hello,

I'm using the RadGridView WPF control and I need to know when a row has moved.

Let me explain the situation, I have a hierarchical RadGridView control with rows and his details rows. I have an user control which is linked to each main row by X and Y position. When I expand a row, I need to know the position of next rows to update all user controls attached.

Do you see what I mean ?

Best regards,

Loic.

UPDATE : I have attached an image to explain what I mean. Thakns.

GridView

asked on 20 Sep 2013

2 answers

315 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

158 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

165 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=