Questions on UI for WPF Forum

7 answers

202 views

Dirty header column after export in excel

Hi,

this is the strange behavior:

I have a RadGridView its ItemSource setted with a VirtualQueryableCollectionView.

User set a filter and then export, I use this method:

public static void ExportToExcel(RadGridView p_GridView)

{

if (p_GridView == null)

return;

var view = p_GridView.ItemsSource as VirtualQueryableCollectionView;

int loadSize = view.LoadSize;

view.LoadSize = p_GridView.Items.TotalItemCount;

string extension = "xlsx";

SaveFileDialog dialog = new SaveFileDialog()

{

DefaultExt = extension,

Filter = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, "Excel"),

FilterIndex = 1

};

if (dialog.ShowDialog() == DialogResult.OK)

{

using (Stream stream = dialog.OpenFile())

{

p_GridView.ElementExportingToDocument += P_GridView_ElementExportingToDocument;

p_GridView.ExportToXlsx(stream,

new GridViewDocumentExportOptions()

{

ShowColumnFooters = true,

ShowColumnHeaders = true,

ShowGroupFooters = true

});

}

System.Diagnostics.Process.Start(dialog.FileName);

}

view.LoadSize = loadSize;

}

Sometimes it exports with first row of sheet dirty, because in first row there isn't columns header, but a row that does not belong to the collection (filtered by user).

PS: Normally, the first times export correctly header row (columns label), after several times appears that showed in SequenceExport.PNG

GridView

answered on 05 May 2016

2 answers

765 views

binding isexpanded

I want whenever an item is added for it to start expanded.

My treeview is bound to a viewmodel.

I am using code examples from the forums to bind the isexpanded to a viewmodel isexpanded property like below.

The code worked for a bit and then recently stopped . the treeview does not render at all if the style is applied. if I remove the style it works fine.

Any ideas. is there a simpler way to do it .

Any help would be appreciated.

<Style TargetType="{x:Type telerik:RadTreeViewItem}" x:Key="Cola" >

<Setter Property="IsSelected" Value="{Binding Path=IsSelected,Mode=TwoWay}" />

<Setter Property="IsExpanded" Value="{Binding Path=IsExpanded,Mode=TwoWay}"/>

</Style>

<telerik:RadTreeView Grid.Row="0" Grid.Column="0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="4"

SelectedItem="{Binding SelectedTreeViewModel,Mode=TwoWay}" ItemContainerStyle="{StaticResource Cola}"

ItemsSource="{Binding TreeViewModels}" >

<telerik:RadTreeView.ItemTemplate>

<HierarchicalDataTemplate ItemsSource="{Binding TreeViewModels}" >

<StackPanel Orientation="Horizontal" >

<Image Source="{Binding Image}" Height="16" Width="16" VerticalAlignment="Center" />

<TextBlock Text="{Binding Name}" Margin="4,0,0,0" VerticalAlignment="Center" />

</StackPanel>

</HierarchicalDataTemplate>

</telerik:RadTreeView.ItemTemplate>

</telerik:RadTreeView>

TreeView

answered on 04 May 2016

1 answer

61 views

MapScale - layout

Is it possible to change the layout of MapScale control -> display the Text block next to the rectangle, not under it?

Map

answered on 04 May 2016

5 answers

255 views

MapEllipse or MapEllipseView on VisualizationLayer

I want to put a circle of a certain radius on a map, that can be selected and I can move it around with a mouse.

SelectionChanged event is only available on VisualizationLayer, however I cannot put MapEllipse or MapEllipseView on the layer - I see nothing. With MapEllipse, for example - when I put it onto the InformationLayer it is displayed properly. But I cannot do anything with selection on that layer... I could use EllipseData, but that doesn't have HotSpot property, and I would like to set the hotspot to the center of the shape rather than left upper corner as it is by default.

Do you have any tips how I can reach my goal?

Map

answered on 04 May 2016

7 answers

256 views

RadRibbonView : Space between title and controls

Hi everybody,

I'm using a RadRibbonView. When the window is full screen, i've no problem (file_1).

When the window is more small, the width of RadRibbonView is decreasing, and the RadRibbonTab witdh, too (file_2). The components are grouped in the same menu ("Navigation").

But, the space between the title ("Navigation") and his components is created (file_3), and I can't delete it.

My code :

<telerik:RadRibbonView Grid.Row="0" Grid.Column="1" HelpButtonVisibility="Hidden" ApplicationButtonVisibility="Hidden"
TitleBarVisibility="Collapsed" HorizontalAlignment="Left" TitleBarBackground="{x:Null}"
IsMinimizable="False" Height="82">

I've tried to change de Height ("Auto" for example"), but it dosen't work.

<telerik:RadRibbonTab Header="Graphiques" Height="Auto" VerticalAlignment="Top" >

(The all of RadRibbonTab have the similar code)

<telerik:RadRibbonGroup Header="Navigation" Height="Auto" VerticalAlignment="Top">

(The all of RadRibbonGroupe have the similar code)

RibbonView and RibbonWindow

answered on 04 May 2016

3 answers

340 views

SelectedItem is not selected when user clicks on expand button in Hierarchical RadGridview in WPF using MVVM

Hi.

I'm using a grid that has parent child heirarchy details using heirarchychildtemplate using MVVM and EF. There is a plus sign in the left-most column for the user to click on to expand the row. When the user clicks on a cell in the row, the details expand normally and the row is selected. But when the user just clicks on the plus sign, the row is expanded but the row does not get selected and SelectedItem is not changing. But according to our functionality, selected item should be updated when the user clicks on the expand button also.

Please give an idea how to change the selected item of the radgriew of the parent grid when the user clicks on the expand button of the left-most column of the gridview.

I'm relatively new to WPF so apologies if I'm overlooking the obvious

Thanks & Regards
Somasekharan Thampi S

GridView

answered on 04 May 2016

1 answer

256 views

Nodes property in radtreeview control is not visible

I am trying to add nodes for a radtreeview from vb. But the property nodes is not getting visibled for radtreeview.

I referred this tutorial to add but when ever i tried to call this Nodes property RadTreeView1.Nodes its throwing an error as 'Nodes' is not a member of 'Telerik.Windows.Controls.RadTreeView'.

Why does it showing like this and whats the workaround for this ..??/

Thanks

Arshad

TreeView

answered on 04 May 2016

1 answer

253 views

Save changes from spreed sheets

Hi there!

Now i have spreedsheet that gets its data from entity data base and bind it to the page the question is :

i have save button , So how can i save the data i inserted in the spreedsheet to the data base i tried some times but the data i entered in the spreed sheets is deleted automatically once i clicked on the button so i want to catch the cells i inserted or edited data on it and save the values of it in the data base

Thanks in advance

Spreadsheet

answered on 04 May 2016

3 answers

331 views

Font size for text provider

Hello
I have following code:

<telerik:TxtDataProvider Name="txtProvider" RichTextBox="{Binding ElementName=rtbLog}" Text="{Binding Path=Log, Mode=OneWay}" />

<telerik:RadRichTextBox Grid.Row="1" Grid.ColumnSpan="3" HorizontalAlignment="Left" IsContextMenuEnabled="True" IsReadOnly="True" Margin="5,3,0,0" IsSelectionMiniToolBarEnabled="False" IsSpellCheckingEnabled="False" Name="rtbLog" VerticalAlignment="Top" />

All I want is to display text, but I have following issues:

1. I cannot set font size and familly. It is very big on the beggining. Even if I set font size for richtextbox it is simple not working.
2. I have context menu enabled but no context menu is displayed. This is for read only purposes only so I would simply have copy context menu.

RichTextBox

answered on 03 May 2016

2 answers

170 views

VirtualQueryableCollectionView, EntityFramework and MVVM

Hi to all,

I'm developing a MVVM Application, I have a global context for application, I have a provider class that exposes me a method that returns a List<MyModel>

MyModel is a class that I use internally in application:

My entityframework context (EF5 & FW4.0) exposes MyTable (this table corresponde to MyModel class).

My provider get IQuarable<MyTable> by linq and convert all items in MyModel, then return List<MyModel>.

Now, If I have a lot of records and I have to show all items into ComboBox, I could user VirtualQueryableCollectionView.

But how can I use List<MyModel> to do this? I will get the same result?

Data Virtualization