Questions on UI for WPF Forum

3 answers

156 views

UI for WPF We are using a telerik 15.2 version for WPF and win forms and as per you site you have not mentioned anything related to whether or not you support windows 10. Can you please confirms if windows 10 is supported and if yes from what version.

GridView

answered on 29 Mar 2019

1 answer

7.3K+ views

Could not load file or assembly 'Telerik.Windows.Controls.[anycontrol]'

I'm struggling with this issue for a few days. I guess it's something with solution because the same assemblies works fine for other projects.
Also in design time designer works okay and draw controls, but in runtime I'm getting System.Windows.Markup.XamlParseException.

Telerik's References:
Telerik.Windows.Controls
Telerik.Windows.Controls.GridView
Telerik.Windows.Controls.Input
Telerik.Windows.Data

Installed Packages:
Microsoft.Bcl (1.0.19)
Microsoft.Bcl.Async(1.0.165)
Microsoft.Bcl.Build(1.0.4)

Controls version is 2013.2.724.40 for .net 4.0,
Visual Studio 2013 with latest updates,
Windows 8.1

I have tried:
1) add references for assemblies in new solution and it works okay;
2) create new project(Wpf User Control Library and Class Library) in solution;
3) uninstall Microsoft.Bcl packages;
4) download latest trial version and even designer throw exception and intellisense didn't work for http://schemas.telerik.com/2008/xaml/presentation in xaml ( <telerik: and empty list ).

So I have no idea what is going wrong... Could you help?

GridView

answered on 29 Mar 2019

5 answers

574 views

[Solved] DataBound tabs: Selected index -1 after datacontext changes

I am dynamically generating tabs based on databinding. After I change the datacontext I get the tabs I expect but none of the tabs are selected. I am expecting a tab (likely the first one) to be selected when this happens. I should mention I am using an older version R2 2017

<CheckBox x:Name="cbox" Click="CheckBox_Checked">Click Me</CheckBox>

<telerik:RadTabControl x:Name="tabCtrl" DisplayMemberPath="Name" ItemsSource="{Binding TabItems}" Height="250"/>

private void TabCtrl_DataContextChanged (object sender, DependencyPropertyChangedEventArgs e)

{

// Attempting to fixt the problem here. Tabs are still unselected when changing data context

this.tabCtrl.SelectedIndex = 0;

}

/// <summary>

/// Simulating a data context change in a complicated MVVM scenario here

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void CheckBox_Checked (object sender, RoutedEventArgs e)

{

if ( cbox.IsChecked == true )

{

this.tabCtrl.DataContext = m_mainVm.TabViewModelA;

}

else

{

this.tabCtrl.DataContext = m_mainVm.TabViewModelB;

}

TabControl

answered on 29 Mar 2019

1 answer

154 views

Setting Hotkey (AccesKeys) to Ribbon using MVVM

In the following example of MVVM application i tried to bind AccessKey to ribbon items to ribbon items. Unfortunatly the user have to navigate through ribbon and cannot use hotkey direcctly. The user have to press hotkey for tab to can use Hotkey for button. Which is just a little bit unpractical if the user wants to use to acces functionality direct, or to inform which hotkey is for which button.

In your example for RibbonView(wpf) called "Office" ,if I press Alt and cann see all ToolTips for. Do I miss some think in my exampple?

Example

RibbonView and RibbonWindow

answered on 29 Mar 2019

2 answers

141 views

[Solved] Is there a reorder event?

I want to save each tile position in each group after user reorder the tilelist, but i can't find any event about reorder. How should I accomplish this?

TileList

answered on 29 Mar 2019

2 answers

247 views

[Solved] RadRibbonWindow is not loading application resource icon from embedded resource.

Hi,

Recently I have changed my WPF application Root window from Window to RadRibbonWindow and this RadRibbonwindow is not loading application Icon from embedded resources. What do I need to do, to make RabRibbonWindow load an icon "ico" from resources automatically? My all other Windows are loading Icon from embedded resources automatically.

RibbonView and RibbonWindow

answered on 28 Mar 2019

2 answers

171 views

Radtimepicker using US date format instead of localised date format

Hello,

it seems the radtimepicker is always using the US Date format. Why is it not using the the host machine localisation ? The problem is now I can not easily convert to date time (even though only the time portion is relevant ) . Please see attached screen shot. Here in South Africa our machines are set to DD/M/YYYY plus time but the timepicker is return the full date in us format M/DD/YYYY plus time.

TimePicker

answered on 28 Mar 2019

3 answers

927 views

[Solved] Delete range from RadObservableCollection used as ItemsSource

Hello,

i am upgrading an old project that uses .NET 3.5 and Telerik UI for WPF 2012.x to the latest .NET and Telerik UI versions. I have a GridView whose ItemsSource is bound to a RadObservableCollection provided by a MVVM viewmodel. As i rememder i used this collection because of the RemoveRange-method which had some performance benefits compared to the ObservableCollection.Remove-method (suspending the collectionchanged-events).

But now i have the problem, that, if a least one column is sorted, not the correct rows are removed. The rows removed are those, that are in the place of the rows i want to delete if the table were unsorted. Deleting from an unsorted GridView works fine. If i use the Remove-method in a loop instead of the RemoveRange deleting works as expected in sorted and unsorted GridViews.

Is it not longer recommended to use the RadObservableCollection as an ItemsSource for a GridView or is it a bug?

GridView

answered on 28 Mar 2019

1 answer

397 views

GridViewCheckBoxColumn - EditMode OnValueChange

Hi,

I have a GridView with a GridViewCheckBoxColumn that is bound to a 'IsSelected' property of an entity.

<telerik:GridViewCheckBoxColumn Header="" DataMemberBinding="{Binding IsSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" AutoSelectOnEdit="True" EditTriggers="CellClick" >

The entity also has a property 'NetLength'. The entities are grouped by some other property. Each time an entity gets checekd or unchecked, I need to calculate the sum of NetLength. I've done that by adding a custom aggregate funcion in code behind.

var selectedItemsTotalMetersfunction = new AggregateFunction<PartNumberModel, decimal>();

selectedItemsTotalMetersfunction.AggregationExpression = pnrs => pnrs.Where(pn => pn.IsSelected).Sum(pn => pn.NetLength ?? 0);

selectedItemsTotalMetersfunction.Caption = "Meters:";

grdShippingOrder.Columns["NetLength"].AggregateFunctions.Add(selectedItemsTotalMetersfunction);

Now, all this works fine except for the fact that the bounded property 'IsSelected' only gets changed when the row changes. Also my total of NetLength is recalculated only when row changes. How can I force the calculation to be done at the moment the checkbox is checked/unchecked ?

In Winforms, the GridViewCheckBoxColumn has a property 'EditMode' which can be set to 'OnValueChange'. Is there something similar in WPF ?

Regards,
Hans

GridView