Questions on UI for WPF Forum

3 answers

182 views

Pagination needs QueryableDomainServiceCollectionView. How to obtain it?

Dear Telerik Support
I just started using your controls for WPF, to see if it suits the needs of our company
Starting by doing basic examples, I stumbled upon the RadGridView pagination
I am trying to use this example
http://demos.telerik.com/silverlight/#DomainDataSource/MVVM and
and this documentation
http://docs.telerik.com/devtools/wpf/controls/raddatapager/getting-started#adding-raddatapager
But it seems my grid wont page if I dont use this

   this.view = new QueryableDomainServiceCollectionView<Customer>(context, getCustomersQuery);

   this.view.PageSize = 10;

thus attributing the PageSize to it.
right now I use a ObservableCollection<Entity> List.

So my question is: Where how can I use the above mentioned class (QueryableDomainServiceCollectionView) to support my need of pagination?
I don't want to paginate it manually, by using the Unbound mode. and I would prefer to avoid that all data goes into memory

I wish I could attach a zip file of my project. but since I cannot, here is the code (note: you must install the PropertyChanged.Fody nugget in order to run it):

XAML

XAML.CS

using System.Windows;
namespace TelerikWpfApp1
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
ViewModel vm = null;
public MainWindow()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
vm = grid.DataContext as ViewModel;
vm.Load();
}
}

VIEWMODEL.cs

using PropertyChanged;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
namespace TelerikWpfApp1
{
[ImplementPropertyChanged]
public class ViewModel
{
public ObservableCollection<Entity> List { get; set; }
public void Load()
{
List = GetList().ToObservableCollection();
}
List<Entity> GetList()
{
List<Entity> list = new List<Entity>();
for (int i = 0; i < 100; i++)
{
list.Add(new Entity() { comment = "dasd", id = 1, name = "fefe" });
list.Add(new Entity() { comment = "xxcv", id = 2, name = "dewd" });
list.Add(new Entity() { comment = "zzz", id = 3, name = "jjj" });
}
return list;
}

//public void Save(Entity item, string comment)
//{
// if (item.comment != comment)
// {
// //controller.Save(); }
// }
//}
}
public class Entity
{
public int id { get; set; }
public string name { get; set; }
public string comment { get; set; }
public DateTime StartDate { get; set; }
public DateTime EndDate { get; set; }
}
public static class ListExtensions
{
public static ObservableCollection<T> ToObservableCollection<T>(this IEnumerable<T> items)
{
var c = new ObservableCollection<T>();
foreach (var item in items)
{
c.Add(item);
}
return c;
}
}
}

Thank you!!!!

GridView

answered on 11 Mar 2016

3 answers

413 views

TimeSpanPicker - First Look

I am working through your documentation and am trying to get the 2nd TimeSpanPicker working.

<telerik:RadTimeSpanPicker x:Name="Duration" Value="{Binding SelectedDuration, Mode=TwoWay}"...

My implementation (different source & different name):

<telerik:RadTimeSpanPicker

Grid.Row="1"

x:Name="Duration"

Value="{Binding SelectedDuration, Mode=TwoWay}"

StringFormat="hh\:mm' hours'"

TimeSpanWatermarkContent="Select duration...">

<telerik:RadTimeSpanPicker.TimeSpanComponents>

<wpf:TimeSpanDurationComponent

ItemsSource="{Binding Durations, Mode=OneWayToSource}"

Header="Minutes"/>

</telerik:RadTimeSpanPicker.TimeSpanComponents>

</telerik:RadTimeSpanPicker>

I added the DurationTimeSpanComponent (wpf.TimeSpanDurationComponent) and have the Durations collection on my MV.

However, I get this error during runtime:

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=Durations; DataItem=null; target element is 'TimeSpanDurationComponent' (HashCode=46098163); target property is 'ItemsSource' (type 'IEnumerable')

Your example includes that control is a container. Is that important?

What I see is that you include a namespace that doesn't seem to be part of my install. When I attempt to set this xmlns I don't have it as an option. And, when I go to add a reference this is not part listed. Is the documentation bad? Is this QuickStart namespace supposed to be part of most common implementations?

xmlns:telerikQuickStart="clr-namespace:Telerik.Windows.Controls.QuickStart;assembly=QuickStart.Common"

TimeSpanPicker

answered on 11 Mar 2016

3 answers

113 views

Acessing TextBox (within GroupFooterTemplate) parent from codebehind

Hello,

I'm using a RadGridView, and in it's footer, a textbox element inside a GroupFooterTemplate. Can I, from codebehind, in a TextBox event (e.g. TextChanged) somehow access the GridView that contains my TextBox? When I check the sender's properties, the parent is null.

Also, can I somehow access the group information and the other groups' TextBoxes?

Any help would be appreciated.

GridView

answered on 10 Mar 2016

1 answer

75 views

QueryableDomainServiceCollectionView

Dear Telerik Support

I just started using your controls for WPF, to see if it suits the needs of our company

Starting by doing basic examples, I stumbled upon the RadGridView pagination

I am trying to use this example

http://demos.telerik.com/silverlight/#DomainDataSource/MVVM and

and this documentation

http://docs.telerik.com/devtools/wpf/controls/raddatapager/getting-started#adding-raddatapager

But it seems my grid wont page if I dont use this

   this.view = new QueryableDomainServiceCollectionView<Customer>(context, getCustomersQuery);

   this.view.PageSize = 10;

thus attributing the PageSize to it.

right now I use a ObservableCollection<Entity> List.

So my question is: Where how can I use the above mentioned class (QueryableDomainServiceCollectionView) to support my need of pagination?

I don't want to paginate it manually, by using the Unbound mode. and I would prefer to avoid that all data goes into memory

I will attach the code of my sample project here. Not you must install the PropertyChanged.Fody in order to run it.

GridView

answered on 10 Mar 2016

2 answers

188 views

[Solved] RadGridView export to Excel creates empty file

<t:RadGridView x:Name="Logs">

<t:RadGridView.Columns>

<t:GridViewDataColumn CellTemplateSelector="{StaticResource IconTemplateSelector}" />

<t:GridViewDataColumn DataMemberBinding="{Binding LogLevel,Mode=OneWay}" Header="Level"

CellStyle="{StaticResource PaddedCell}"/>

<t:GridViewDataColumn DataMemberBinding="{Binding LogID,Mode=OneWay}"

Header="LogID"/>

<t:GridViewDataColumn DataMemberBinding="{Binding MachineDateTime,Mode=OneWay}"

Header="Machine Time"

CellStyle="{StaticResource PaddedCell}"/>

<t:GridViewDataColumn DataMemberBinding="{Binding Occured, Mode=OneWay}"

Header="Occured"

CellStyleSelector="{StaticResource ColorSelector}"/>

<t:GridViewDataColumn DataMemberBinding="{Binding System,Mode=OneWay}"

Header="System"