Questions on UI for WPF Forum

1 answer

93 views

Hi,
I'm new to the diagram control and I've reached the point where I need assistance.

The application that I'm working on is intensively used over remote connection - the users are seldom on site (plants located all over the world) and most of the time they need to configure certain parameters of the application remotely.

Seen as a whole - the window contains a huge tab control for different settings and one of the tabs contains a diagram.
The application behaves all right even through the remote connection until the user switches to the tab with the RadDiagram - when the app becomes unresponsive - or at least sluggish - regardless of how many items that diagram contains.

Beside all the Remote Desktop Protocol Settings that we can change, what other options do I have to improve the responsiveness of my app in this situation?

Roxana

Diagram

answered on 05 Nov 2013

1 answer

104 views

Grouping issue

I am having an issue with grouping, if I group by a column that contains a null value all is fine in this case the middle names have a lot of nulls, but if I group by another column afterwards I get a crash, InvalidOpertationException Collection was modified; enumeration operation may not execute. I am using entity framework bound directly to the grid. Simple code below attached to an older version of adventure works, but anything with a column with nulls in it should work. Just xaml. Curious how to fix this or am I doing something completely wrong somewhere else?

<Window x:Class="GridGroupingTest.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:entites="clr-namespace:GridGroupingTest"

xmlns:system="clr-namespace:System;assembly=mscorlib"

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

<Grid>

<telerik:RadEntityFrameworkDataSource Name="AIMEntityFrameworkDataSource" QueryName="DimCustomers">

<telerik:RadEntityFrameworkDataSource.ObjectContext>

<entites:AdventureWorksDW2008R2Entities1/>

</telerik:RadEntityFrameworkDataSource.ObjectContext>

</telerik:RadEntityFrameworkDataSource>

<Border Grid.Column="0" BorderBrush="Black" BorderThickness="2" Margin="2">

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="Auto"/>

<ColumnDefinition Width="*"/>

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

<RowDefinition Height="*"/>

<RowDefinition Height="Auto"/>

</Grid.RowDefinitions>

<Label Content="Columns Shown:" Grid.Row="0" Grid.Column="0"/>

<StackPanel Background="White" Grid.Row="1" Grid.Column="0" Grid.RowSpan="2" >

<ListBox ItemsSource="{Binding Columns, ElementName=RadGridView1}">

<ListBox.ItemTemplate>

<DataTemplate>

<CheckBox Content="{Binding Header}" IsChecked="{Binding IsVisible, Mode=TwoWay}" />

</DataTemplate>

</ListBox.ItemTemplate>

</ListBox>

</StackPanel>

<StackPanel Orientation="Horizontal" Grid.Row="0" Grid.Column="1">

<Label Content="Filters"/>

<telerik:RadComboBox Margin="2" Width="150" DisplayMemberPath="name" ItemsSource="{Binding Filters}"

SelectedItem="{Binding SelectedFilter, Mode=TwoWay}"/>

<Button Command="{Binding LoadFilterCommand}" Content="Load"/>

<Button Command="{Binding DeleteFilterCommand}" Content="Delete"/>

<Label Content="Save Filter Name:"/>

<TextBox x:Name="SaveNameTextbox" Text="{Binding SaveNameText, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" Width="150"/>

<Button Command="{Binding SaveFilterCommand}" Content="Save"/>

<Button Content="Default"/>

<Button Content="Clear All"/>

</StackPanel>

<telerik:RadGridView x:Name="RadGridView1" Grid.Row="1" Grid.Column="1"

ItemsSource="{Binding DataView, ElementName=AIMEntityFrameworkDataSource}"

Margin="0" GroupRenderMode="Flat"

SelectedItem="{Binding SelectedIndex}"

DataLoadMode="Asynchronous"

RowIndicatorVisibility="Collapsed"

IsReadOnly="True"

ShowColumnSortIndexes="True"

AutoGenerateColumns="False"

CanUserFreezeColumns="True"

CanUserResizeColumns="True"

ValidatesOnDataErrors="None" >

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="First" ShowDistinctFilters="False"

DataMemberBinding="{Binding FirstName}" DataType="system:String" />

<telerik:GridViewDataColumn Header="Middle" ShowDistinctFilters="False"

DataMemberBinding="{Binding MiddleName}" DataType="system:String" />

<telerik:GridViewDataColumn Header="Last" ShowDistinctFilters="False"

DataMemberBinding="{Binding LastName}" DataType="system:String" />

<telerik:GridViewDataColumn Header="Email" ShowDistinctFilters="False"

DataMemberBinding="{Binding EmailAddress}" DataType="system:String" />

<telerik:GridViewDataColumn Header="Education" ShowDistinctFilters="False"

DataMemberBinding="{Binding EnglishEducation}" DataType="system:String" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

<telerik:RadDataPager x:Name="radDataPager" Grid.Row="2" Grid.Column="1"

Source="{Binding Items, ElementName=RadGridView1}"

PageSize="30"/>

</Grid>

</Border>

</Grid>

</Window>

GridView

answered on 05 Nov 2013

1 answer

61 views

ReadOnly slot

Hi,

I'm using Telerik V2012.2.912.35 and I would like to know if it's possible with the radscheduleview control to have 2 kinds of readonly slot??? I would lik to have passed slots into a color and the future slots into another color?

Thank's

ScheduleView

answered on 05 Nov 2013

2 answers

132 views

Auto generated tiles saving

Hello, in a RadTileList control I need to save each autogenerated tile's Display Index so I wanted to know if it is possibile to get the autogenerated tiles in a RadTileList control.
Thanks a lot.

TileList

answered on 05 Nov 2013

3 answers

266 views

Styles from Resource Dictionary for RadGridView

Dear Support,

I have defined some styles for the RadGridView in my global resource dictionary. why it does not automatically applied to controls, why i must set it explicitly? for example i have defined style for column headers but i must specify it as HeaderCellStyle for every column.
Is there any way to define style in resources and applied it automatically without specifying it?

Thanks
Pallavi.

GridView

answered on 05 Nov 2013

3 answers

172 views

Hide the GridView part

Hello there,

is it posssible to hide the complete GridView part of RadGanttView, therefore only show the timeline part?

GanttView

answered on 05 Nov 2013

1 answer

121 views

Changing Office2013 Theme colours

I have a test app that uses the new Office2013 theme. I can successfully change the colours of theme in code, by setting the various Palette member. For instance

Office2013Palette.Palette.AccentMainColor = ...

This all works, EXCEPT for EffectAccentHighColor. Not matter what value I use, the colour remains as the default blue colour. Any help on this?

General Discussions

answered on 05 Nov 2013

8 answers

495 views

Specified element is already the logical child of another element error with my usercontrol in CellEditTemplate.

Hi
I have defined a user control that I display in a CellEditTemplate. I get the error "Specified element is already the logical child of another element... " in the second attempt to edit the cell. It displays my usercontrol successfully on the first edit attempt. My usercontrol is exposed via a viewmodel exposed as a property of my datacontext's viewmodel.

Here's an extract of the XAML.

<telerik:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<DockPanel HorizontalAlignment="Stretch" VerticalAlignment="Top">

<telerik:RadDropDownButton DockPanel.Dock="Top" HorizontalAlignment="Stretch" Height="22"

Content=

"{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.AcctVm.SelectedAccount.Account_Code,Mode=TwoWay}"

VerticalAlignment="Center" HorizontalContentAlignment="Left">

<telerik:RadDropDownButton.DropDownContent>

<ContentControl Content=

"{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.AcctVm.View}"

VerticalAlignment="Stretch" Height="300" />

</telerik:RadDropDownButton.DropDownContent>

</telerik:RadDropDownButton>

</DockPanel>

</DataTemplate>

</telerik:GridViewDataColumn.CellEditTemplate>

Is there a problem with this XAML or do you need more information?
Thanks
Craig

GridView

answered on 04 Nov 2013

1 answer

211 views

Custom filtering shows funnel on empty GridView

Hello,
when a GridView has no items to display, the funnels for the filters are not displayed, excepted for custom filters.
This poses problem for some cases. In my case, I have a custom filter that descends from FilteringControl. In the Prepare method, I call the inherited Prepare method and it raises an InvalidOperationException exception, with the following text: A column without EffectiveFilteringType cannot supply AvailableFilterOperators.
Patrick

GridView

answered on 04 Nov 2013

4 answers

279 views

How to set the VisibleRange in code?

Dear all,
by default, the SchedulerView initializes the VisibleRange accordingly to the current date/ time.
Is there any way to set the visible time range in code behind (the VisibleRange, as well as VisibleRange.Start and VisibleRange.End properties are read-only).

Thanks
Meik

ScheduleView

answered on 04 Nov 2013