Questions on UI for WPF Forum

1 answer

143 views

SubmitChanges and RejectChanges methods not work

If you add a new record and then run a command or method RejectChanges the commands or methods do not work SubmitChanges RejectChanges.

DataServiceDataSource

answered on 11 May 2016

2 answers

174 views

Deferred Drag mode and RadGrid rows reordering

It seems that the two don't get along. Code:

<Window x:Class="DeferredModeAndRowsReorder.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:local="clr-namespace:DeferredModeAndRowsReorder"

Title="MainWindow" Height="350" Width="525" WindowState="Maximized">

<Grid>

<Grid.Resources>

<Style TargetType="telerik:GridViewRow"

x:Key="DraggedRowStyle">

<Setter Property="telerik:DragDropManager.AllowDrag"

Value="True" />

<Setter Property="telerik:DragDropManager.TouchDragTrigger"

Value="TapAndHold"/>

</Style>

</Grid.Resources>

<telerik:RadDocking x:Name="radDocking" DragDropMode="Deferred" CloseButtonPosition="InPaneAndGroup">

<telerik:RadDocking.DocumentHost>

<telerik:RadSplitContainer x:Name="dh">

<telerik:RadPaneGroup x:Name="dg">

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking.DocumentHost>

<telerik:RadSplitContainer telerik:DockingPanel.InitialSize="170,150" MaxWidth="600"

Name="LeftContainer" InitialPosition="DockedLeft">

<telerik:RadPaneGroup x:Name="Group1">

<telerik:RadPane CanUserClose="False" x:Name="Pane1" Header="Server Explorer" CanDockInDocumentHost="False">

</telerik:RadPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

<telerik:RadSplitContainer telerik:DockingPanel.InitialSize="170,150" MaxWidth="600" Orientation="Vertical"

Name="RightContainer" InitialPosition="DockedRight">

<telerik:RadPaneGroup x:Name="Group2">

<telerik:RadPane CanUserClose="False" x:Name="Pane2" Header="Toolbox" CanDockInDocumentHost="False">

</telerik:RadPane>

</telerik:RadPaneGroup>

<telerik:RadPaneGroup x:Name="Group3">

<telerik:RadPane CanUserClose="False" x:Name="Pane3" Header="Properties" CanDockInDocumentHost="False">

</telerik:RadPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

<telerik:RadSplitContainer telerik:DockingPanel.InitialSize="170,300" Orientation="Horizontal"

Name="BottomContainer" InitialPosition="DockedBottom">

<telerik:RadPaneGroup>

<telerik:RadPane CanUserClose="False" Header="System" CanDockInDocumentHost="False">

</telerik:RadPane>

<telerik:RadPane CanUserClose="False" IsSelected="True" Header="Global" CanDockInDocumentHost="False">

</telerik:RadPane>

<telerik:RadPane CanUserClose="False" Header="Watch" CanDockInDocumentHost="False">

<telerik:RadGridView x:Name="RadGridView1" GroupRenderMode="Flat"

ShowGroupPanel="False" CanUserResizeRows="True"

ItemsSource="{Binding Items}"

RowStyle="{StaticResource DraggedRowStyle}"

AllowDrop="True"

CanUserSortColumns="False"

IsFilteringAllowed="False"

local:RowReorderBehavior.IsEnabled="True"

telerik:ScrollingSettingsBehavior.IsEnabled="True"

telerik:ScrollingSettingsBehavior.ScrollAreaPadding="30"

telerik:ScrollingSettingsBehavior.ScrollStep="24"

telerik:ScrollingSettingsBehavior.ScrollStepTime="00:00:00.05">

<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>

</telerik:RadPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking>

</Grid>

</Window>

And I just generated a simple items source in the code behind:

public partial class MainWindow : Window

{

private ObservableCollection<int> _items = new ObservableCollection<int>();

public MainWindow()

{

InitializeComponent();

for (int i = 0; i < 1000; i++)

{

_items.Add(i);

}

this.DataContext = this;

}

public ObservableCollection<int> Items

{

get

{

return _items;

}

The row reorder behavior code is taken from your examples. When trying to reorder rows, then I see the deferred mode adorner and the docking compasses.

This is not the only problem. Try reordering the rows... After few drag and drops (Usually a quick drag and drop), the "Watch" pane (where the GridView was in) will disappear (because it was removed from its original group and added a some group with no items).

Docking

answered on 11 May 2016

3 answers

109 views

Can I hide Data errors in edit mode

I have a gridview that has some errors using DataErrorInfo. When in edit mode, I use cell_validating to potentially set an edit error. However, I then get 2 error controls (red border) overlapping each other. Is it possible to hide or switch off the data layer errors whilst in edit mode?

GridView

answered on 11 May 2016

2 answers

178 views

Calculated cell not updated after converter completed

Hello,

I have a column in which I use a converter to create a string based on some value that where inputted by the user. I attached this converter to my column using the code below:

DataMemberBinding="{Binding Path=., Converter={StaticResource MyConverter}}"

When I debug the code I can see the converter is running for the particular cell and generating a value thats specific for that row, but the cell itself is not updated with the new value, it remains empty?

The user is not able to enter data in this cell or set the focus, because the property IsReadOnly is set and I skip the cell during input, the values the user input are in inputted in a seperate dialog, after this dialog is closed the focus moves automatically to the cell next to it.

Am I forgetting here something to commit, it seems a very simple problem but I cant find it?

Regards,

Marcel

GridView

answered on 11 May 2016

1 answer

162 views

Default value of GroupRenderMode

Hey,

is there a reason, why the GroupRenderMode default value is Nested and not Flat? It seems that Nested does not have any advantages, or am I wrong?

Thanks a lot!

GridView

answered on 10 May 2016

3 answers

123 views

Click group header the first cell is in editmode

I use group by the field "Group_name"

the code like this:

radGridView.Items.GroupDescriptions.Add(new PropertyGroupDescription("Group_name"));

when I expanded or unexpanded the group the first cell in the group is in edit mode;

Is any resulution avoid this ?

GridView

answered on 10 May 2016

1 answer

68 views

Exporting Large Number of Items Throws rowIndex Out of Bound Exception

Hi,

I have a gridview contains 2+ Millions rows and around 5 columns, I want to export the gridview as Excel or PDF document. When call export, I get rowIndex out of bound exception.

Here is the way I used to export as Excel

exportGridView.ExportToXlsx(stream, new GridViewDocumentExportOptions
{
AutoFitColumnsWidth = true,
ExportDefaultStyles = true,
});

=============================

and this is the way I export as PDF

exportGridView.ExportToPdf(stream, new GridViewPdfExportOptions
{
AutoFitColumnsWidth = true,
ExportDefaultStyles = true,
});

Best regards,

Ahmed

GridView

answered on 10 May 2016

5 answers

213 views

Multiple axis for ChartCrosshairBehavior in RadCartesianChart

Hello,

I'm using a ChartCrosshairBehavior in my RadCartesianChart.

Currently, for the CrossHair Control, the target axis is a left-axis (by default). => picture "one"

I want to know if is it possible to target the right axis, and if yes, how can i do this ? (picture "two")

This my code :

01.<telerik:ChartCrosshairBehavior x:Name="chartCross" PositionChanged="chartCross_PositionChanged" HorizontalLineLabelVisibility="Hidden" HorizontalLineVisibility="Hidden" VerticalLineLabelVisibility="Hidden" VerticalLineVisibility="Hidden"> <telerik:ChartCrosshairBehavior.HorizontalLineLabelDefinition> <telerik:ChartAnnotationLabelDefinition Format="{}{0:N1}" Location="Left" /> </telerik:ChartCrosshairBehavior.HorizontalLineLabelDefinition> </telerik:ChartCrosshairBehavior>

Thank you !

Valentin.

Chart

answered on 10 May 2016

1 answer

694 views

Provide value on 'System.Windows.Markup.StaticResourceHolder' threw an exception while adding RadImageEditorUI control in WPF

I have added the ImageEditor UI control in My XMAL window and got below error in runtime. i dont have any clue on this issue. i added all libraries based on sample program ; but its not working

OS : Windows 10

IDE: Viusal studio 2015

Added Reference below Lib: Telerik.Windows.Controls version (2016.1.217.40)

Telerik.Windows.Controls.ImageEditor(2016.1.217.40)

Telerik.Windows.Controls.Navigation

Details Error Message:

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" xmlns:tools="clr-namespace:Telerik.Windows.Media.Imaging.Tools;assembly=Telerik.Windows.Controls.ImageEditor" xmlns:commands="clr-namespace:Telerik.Windows.Media.Imaging.ImageEditorCommands.RoutedCommands;assembly=Telerik.Windows.Controls.ImageEditor"

//My XAML code

<UserControl x:Class="Aagnaa_ImageEditor.ImageProcessngView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Aagnaa_ImageEditor"
xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
xmlns:tools="clr-namespace:Telerik.Windows.Media.Imaging.Tools;assembly=Telerik.Windows.Controls.ImageEditor"
xmlns:commands="clr-namespace:Telerik.Windows.Media.Imaging.ImageEditorCommands.RoutedCommands;assembly=Telerik.Windows.Controls.ImageEditor"
xmlns:converters="clr-namespace:Aagnaa_ImageEditor.Converters"
xmlns:views="clr-namespace:Aagnaa_ImageEditor.Views"
mc:Ignorable="d"
d:DesignHeight="600" d:DesignWidth="1300">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="300"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>

<Grid Grid.Column="1">
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="300"></RowDefinition>
</Grid.RowDefinitions>

<telerik:RadImageEditorUI Margin="8"/>



</Grid>
</Grid>
</UserControl>

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Aagnaa_ImageEditor"
xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
xmlns:tools="clr-namespace:Telerik.Windows.Media.Imaging.Tools;assembly=Telerik.Windows.Controls.ImageEditor"
xmlns:commands="clr-namespace:Telerik.Windows.Media.Imaging.ImageEditorCommands.RoutedCommands;assembly=Telerik.Windows.Controls.ImageEditor"
xmlns:converters="clr-namespace:Aagnaa_ImageEditor.Converters"
xmlns:views="clr-namespace:Aagnaa_ImageEditor.Views"
mc:Ignorable="d"
d:DesignHeight="600" d:DesignWidth="1300">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="300"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>

<Grid Grid.Column="1">
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="300"></RowDefinition>
</Grid.RowDefinitions>

<telerik:RadImageEditorUI Margin="8"/>



</Grid>
</Grid>
</UserControl>

Let me know if its common issue?

Regards

Hema

ImageEditor

answered on 10 May 2016

1 answer

86 views

AggregateFunctions with drag column

i am using RadGridView to display data. in the UI design, I also apply AggregateFunctions for some columns (see below). But when I drag one column for grouping, the Aggregate result also show in the grid which looked not good. Any way to prevent when I manually drag columns for grouping?

<telerik:GridViewDataColumn.AggregateFunctions>
<telerik:SumFunction ResultFormatString="{}{0:N4}"/>
</telerik:GridViewDataColumn.AggregateFunctions>

GridView

answered on 10 May 2016