or
6 answers
255 views
I would like to change custom style for RadpanelBar to display the arrow on the left instead of on the right side.
How can I customize it? Also, when the row is expanded, the arrow will display differently.
How can I customize it? Also, when the row is expanded, the arrow will display differently.
1 answer
119 views
Every time I use the RadWindow i get this exception at design time:
At runtime everything works fine.
It's impossible to cast 'Microsoft.Expression.DesignSurface.View.ArtboardBorder' on type 'System.Windows.Window'At runtime everything works fine.
Kalin
Telerik team
answered
on
19 Dec 2014
5 answers
171 views
Hi guys,
I get the following issue on the version 2014.2.0617.45:
When I select one row on top of the grid, then scroll down, and try to select other row - all the pages in between are getting loaded. The issue haven't reproduced on earlier version (2013.2.724.40).
Here is the code to reproduce the problem:
View:
ViewModel:
If you put a breakpoint in OnItemsLoading method - you'll see that grid requests all pages between two selected rows. Please, note, that it happens after regular single row selection, so no data pages in the middle of two selected rows are not needed.
I get the following issue on the version 2014.2.0617.45:
When I select one row on top of the grid, then scroll down, and try to select other row - all the pages in between are getting loaded. The issue haven't reproduced on earlier version (2013.2.724.40).
Here is the code to reproduce the problem:
View:
<Window x:Class="RadGridView_Virtualization.MainWindow" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" xmlns:local="clr-namespace:RadGridView_Virtualization" Title="MainWindow" Height="350" Width="525"> <Window.Resources> <local:MyViewModel x:Key="MyViewModel" /> </Window.Resources> <Grid DataContext="{StaticResource MyViewModel}"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"></ColumnDefinition> <ColumnDefinition></ColumnDefinition> </Grid.ColumnDefinitions> <telerik:RadGridView x:Name="gridAccessList" Height="240" Width="370" IsFilteringAllowed="False" CanUserReorderColumns="True" AutoGenerateColumns="False" ItemsSource="{Binding Path=Items}" EnableRowVirtualization="True" SelectionMode="Extended" ScrollViewer.IsDeferredScrollingEnabled="True" IsReadOnly="True" ShowGroupPanel="False"> <telerik:RadGridView.Columns> <telerik:GridViewDataColumn DataMemberBinding="{Binding Id}" Width="*"/> </telerik:RadGridView.Columns> </telerik:RadGridView> </Grid></Window>ViewModel:
using System.Collections.Generic;using System.ComponentModel;using Telerik.Windows.Data;namespace RadGridView_Virtualization{ public class MyViewModel : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; public MyViewModel() { Items = new VirtualQueryableCollectionView<DummyData> { VirtualItemCount = LoadSize, LoadSize = this.LoadSize }; Items.ItemsLoading += OnItemsLoading; } private void OnItemsLoading(object sender, VirtualQueryableCollectionViewItemsLoadingEventArgs args) { Items.VirtualItemCount = 35000; Source = new List<DummyData>(); for (int i = 0; i < args.ItemCount; i++) { Source.Add(new DummyData { Id = args.StartIndex + i }); } Items.Load(args.StartIndex, Source); } private List<DummyData> source; public List<DummyData> Source { get { return this.source; } set { this.source = value; } } private int loadSize = 100; public int LoadSize { get { return loadSize; } set { loadSize = value; } } public VirtualQueryableCollectionView<DummyData> Items { get; private set; } public class DummyData { public int Id { get; set; } } }}If you put a breakpoint in OnItemsLoading method - you'll see that grid requests all pages between two selected rows. Please, note, that it happens after regular single row selection, so no data pages in the middle of two selected rows are not needed.
Nick
Telerik team
answered
on
19 Dec 2014
3 answers
301 views
I have two issues with the RadTreeListView control.
1)Performance sucks on the UI load for the expansion of rows with MVVM. The issue I have is I maintain the state of the collapsed and expanded nodes. Let's say my Nodes are all expanded. I set my datasource.
The control draws them all collapsed, then "pops" then expands them all. Looks like crap. i.e. I do a "refresh" on my datasource and reset the collection and all the items collapse then expand again. Looks pretty bad.
2) I spent hours trying to figure this out to no avail. I am refreshing my datasource and I tried to ways to set my selected item.
1) using the IsSelected property. Which should have been good enough since I store that value and load it with my objects. (And yes, I had the row databinding style which would have been nice if you had that supported like the IsExpandedBinding property)
2) Setting my SelectedItem property on my VM. Which is bound two way to the grid.
I set it before. I set it after the ItemSource update. I always just get the first item in the dataset to appear selected.
I am using an observablecollection for the ItemsSource.
Maybe I am missing something obvious, but the control isn't feeling very solid to me so far.
1)Performance sucks on the UI load for the expansion of rows with MVVM. The issue I have is I maintain the state of the collapsed and expanded nodes. Let's say my Nodes are all expanded. I set my datasource.
The control draws them all collapsed, then "pops" then expands them all. Looks like crap. i.e. I do a "refresh" on my datasource and reset the collection and all the items collapse then expand again. Looks pretty bad.
2) I spent hours trying to figure this out to no avail. I am refreshing my datasource and I tried to ways to set my selected item.
1) using the IsSelected property. Which should have been good enough since I store that value and load it with my objects. (And yes, I had the row databinding style which would have been nice if you had that supported like the IsExpandedBinding property)
2) Setting my SelectedItem property on my VM. Which is bound two way to the grid.
I set it before. I set it after the ItemSource update. I always just get the first item in the dataset to appear selected.
I am using an observablecollection for the ItemsSource.
Maybe I am missing something obvious, but the control isn't feeling very solid to me so far.
Nick
Telerik team
answered
on
19 Dec 2014
1 answer
198 views
RadRichTextBox Header and Footer places can not show images in WPF. When I open a word docx file header images are remove.
Boby
Telerik team
answered
on
19 Dec 2014
3 answers
169 views
Hi,
Can you guide me on the simplest way of how I can change the Background of an Selected Appointment ?
I also want to customize the Opacity and the Border and also all this when hover on it.
I successfully changed different properties of an appointment, but I'm not sure how to change the selected properties.
Thanks,
Daniel
Can you guide me on the simplest way of how I can change the Background of an Selected Appointment ?
I also want to customize the Opacity and the Border and also all this when hover on it.
I successfully changed different properties of an appointment, but I'm not sure how to change the selected properties.
Thanks,
Daniel
Kalin
Telerik team
answered
on
19 Dec 2014
10 answers
364 views
I have two issues:
1) On data type validation, I see the row highlight but do not see any error message as a comment that I see in DataAnnotations Support demo
2) How do I add validations like Required field validation or any custom validation at runtime.
I am using 2013.2.724.45 version of telerik controls.
Dimitrina
Telerik team
answered
on
19 Dec 2014
5 answers
98 views
Seems that GroupHeaderTemplate doesn't use the Converter set in the GroupDescription?
How can I make a template that does?
How can I make a template that does?
Dimitrina
Telerik team
answered
on
19 Dec 2014
1 answer
59 views
Steps to reproduce:
1. create the following lines of text:
line 1
line 2
line 3
2. select "line 1" and indent it to the right ; it results in one step indentation
3. select both "line 2" and "line 3" and indent them to the right; it results in two step indentation
1. create the following lines of text:
line 1
line 2
line 3
2. select "line 1" and indent it to the right ; it results in one step indentation
3. select both "line 2" and "line 3" and indent them to the right; it results in two step indentation
Aylin
Telerik team
answered
on
19 Dec 2014
4 answers
263 views
Howdy Everyone,
I'd like to ask on how to hide/show telerik grids on the same window by clicking a button?
Here's my scenario:
I have 3 buttons: the day, week and month. My default grid on the window is the Day Grid. When I clicked on the day button, the day grid would show up, when the week button is clicked, the week grid will and the day grid will hide, and lastly, when the month button is clicked, the month grid will show and the week grid will be hidden. Please help me since i'm new to your tools. Would greatly appreciate your help. God bless.
Ayana
I'd like to ask on how to hide/show telerik grids on the same window by clicking a button?
Here's my scenario:
I have 3 buttons: the day, week and month. My default grid on the window is the Day Grid. When I clicked on the day button, the day grid would show up, when the week button is clicked, the week grid will and the day grid will hide, and lastly, when the month button is clicked, the month grid will show and the week grid will be hidden. Please help me since i'm new to your tools. Would greatly appreciate your help. God bless.
Ayana
