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ArgumentOutOfRangeException from cell in edit mode
In our view model we are clearing out an observerable collection (Schedule.Clear()) while a cell grid is in edit mode and we are getting the following exception.

Any ideas? We have a workaround for now where assign a new observable collection to the property but would rather clear.

System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.

Parameter name: index

at Telerik.Windows.Controls.GridView.GridViewDataControl.CommitCurrentEdit(GridViewRow gridViewRow)

at Telerik.Windows.Controls.GridView.GridViewDataControl.PerformRowEditEnded(GridViewCell currentCell)

at Telerik.Windows.Controls.GridView.GridViewDataControl.CommitCellEdit(GridViewCell currentCell, Boolean isLeavingRow)

at Telerik.Windows.Controls.GridView.GridViewDataControl.OnItemsChanged(NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Controls.GridView.BaseItemsControl.OnItemCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)

at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Data.DataItemCollection.OnCollectionViewCollectionChanged(NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Data.QueryableCollectionView.RefreshOverride()

at Telerik.Windows.Data.QueryableCollectionView.RefreshInternal()

at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
(More that was removed, but entry point from our code)

 
GridView
Dimitrina
Telerik team
 answered on 17 Jan 2012
4 answers
227 views
Problem With RadDataPager & VirtualQueryableCollectionView
I am working with Telerik WPF controls, RadGridView, RadDataPager and VirtualQueryableCollectionView<T>.
The PageCount of RadDataPager is incorrect once i filtered the data via RadGridView header. The PageCount  is  
always 1.  please find attached image screenshot.

I do not know how to fix this issue. In following code, i set the VirtualItemCount value as new value but the RadDataPager show me 1 as PageCount. I could not move to next page.  

Assembly version is: 2011.3.1220.40

  <telerik:RadGridView x:Name="GridView" ItemsSource="{Binding DataView}" Width="700" MinHeight="386" MaxHeight="500"
                .........
</telerik:RadGridView>
 
<telerik:RadDataPager PageSize="100" Grid.Row="1" Source="{Binding DataView}"  />


 
public VirtualQueryableCollectionView<VSOEChageItemViewModel> DataView
     {
         get
         {
             if (_DataView == null)
             {
                 _DataView = new VirtualQueryableCollectionView<VSOEChageItemViewModel>() { LoadSize = 40, VirtualItemCount = 40 };
                 _DataView.ItemsLoading += DataViewItemsLoading;
             }
             return _DataView;
         }
         private set
         {
             if (_DataView != null)
             {
                 _DataView.ItemsLoading -= DataViewItemsLoading;
             }
 
             _DataView = value;
 
             if (_DataView != null)
             {
                 _DataView.ItemsLoading += DataViewItemsLoading;
             }
         }
     }
private void DataViewItemsLoading(object sender, VirtualQueryableCollectionViewItemsLoadingEventArgs e)
     {
         string filertString = GetFilertString();
 
         var sort = DataView.SortDescriptors;
         var sortString = sort.ToDynamicLinq();
         if (!string.IsNullOrEmpty(sortString))
             sortString = sortString.Remove(0, sortString.IndexOf(".") + 1);
 
         int allCount = 0;
         List<VSOEChageItemViewModel> dd1 = LoadData(filertString, sortString, e.StartIndex, e.ItemCount, out allCount);
 
 
         if (allCount != DataView.VirtualItemCount)
         {
             DataView.VirtualItemCount = allCount;
         }
 
         DataView.Load(e.StartIndex, dd1);
 
     }
GridView
Vlad
Telerik team
 answered on 17 Jan 2012
1 answer
136 views
Show/Hide Columns outside of the RadGridView in button click
Hi,

On a button click, is it possible to invoke a telerik datagrid column chooser context menu in WPF?

A code snipped will be appreciated

Thanks,
Priya
GridView
Maya
Telerik team
 answered on 17 Jan 2012
0 answers
180 views
Linq to SQL binding to GridView
Hi,
I am trying to create a program that will have a listbox on the left of database table names and then a grid area to the right.

When the user double clicks on a table name  a grid with the table data should be populated with the table data. Once it is open the user should be able to make changes and hit the save button that will submit the datacontext changes.

I have a linq to sql set up for the Northwind database for this example.

As soon as I make a change in the grid to a cell the entire row disappears??? not sure what I am doing wrong.

Thanks,
Jessica 
DataProvider.cs
 
 
 
namespace SampleLinqToSQL
{
    public static class DataProvider
    {
        private static NorthwindDataContext dataContext = null;
 
        public static NorthwindDataContext DataContext
        {
            get
            {
                return dataContext;
            }
        }
 
        static DataProvider()
        {
            dataContext = new NorthwindDataContext();
        }
 
        public static void SetDataContext(string connectionString)
        {
            dataContext = null;
            dataContext = new NorthwindDataContext(connectionString);
        }
    }
}


MainWindow.xaml
 
 
<Window x:Class="SampleLinqToSQL.MainWindow"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" Title="MainWindow" Height="350" Width="525">
    <DockPanel LastChildFill="True">
        <StackPanel DockPanel.Dock="Bottom" HorizontalAlignment="Right" Orientation="Horizontal">
            <Button x:Name="SaveBtn" Width="50" Height="25" Margin="5" Click="SaveBtn_Click">Save</Button>
            <Button x:Name="CancelBtn" Width="50" Height="25" Margin="5" Click="CancelBtn_Click">Cancel</Button>
        </StackPanel>
         
        <ListBox x:Name="TableNames" DockPanel.Dock="Left" Width="140" MouseDoubleClick="TableNames_MouseDoubleClick"></ListBox>
         
        <Border>
            <DockPanel x:Name="DocumentArea">
                <telerik:RadGridView x:Name="dataGridView"  AutoGenerateColumns="True" ItemsSource="{Binding}"  />
            </DockPanel>
        </Border>
    </DockPanel>
</Window>


MainWindow.xaml.cs
 
 
 
namespace SampleLinqToSQL
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private string sqlConnection = @"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Path\Northwind.mdf;Integrated Security=True;User Instance=True";
        public MainWindow()
        {
            InitializeComponent();
 
            DataProvider.SetDataContext(sqlConnection);
 
            LoadTableNames();
        }
 
        private void LoadTableNames()
        {
            List<string> tableNames = new List<string>();
 
            foreach (PropertyInfo item in DataProvider.DataContext.GetType().GetProperties())
            {
                tableNames.Add(item.Name);
            }
 
            tableNames = tableNames.OrderBy(s => s).ToList();
            TableNames.ItemsSource = tableNames;
        }
 
        private void SaveBtn_Click(object sender, RoutedEventArgs e)
        {
            DataProvider.DataContext.SubmitChanges();
        }
 
        private void CancelBtn_Click(object sender, RoutedEventArgs e)
        {
            //TODO
        }
 
        private void TableNames_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            if (TableNames.SelectedItem != null)
            {
                dataGridView.DataContext = DataProvider.DataContext.GetTableByName(TableNames.SelectedItem.ToString()).AsParallel();
            }
        }
    }
}

GridView
Jessica
Top achievements
Rank 1
 asked on 16 Jan 2012
1 answer
128 views
QuickAccessToolBar overlaying application icon
I am using RadRibbonWindow to host a RadRibbonView, and set QuickAccessToolBarPosition to "AboveRibbon", but the QuickAccessToolBar is overlaying the application icon.  How can I shift the QuickAccessToolBar away from the application icon?  
I like to have the same format as Excel 2010 which has a separator between the application icon and the QuickAccessToolBar (please see the attachment).

Thanks.
RibbonView and RibbonWindow
Viktor Tsvetkov
Telerik team
 answered on 16 Jan 2012
1 answer
161 views
UpdateLayout with ObservableCollection change
Hello,

I recently updated my application to the 2011 Q3 DLLs. I have a tab control that binds to an ObservableCollection for the ItemsSource. I have to add an item to the ObservableCollection in code. I used to be able to do an UpdateLayout on the tab control, and it would add the new tab. It doesn't do this anymore. I can set the ItemsSource to null and back to the ObservableCollection to get the tab to show up, but that has other very bad consequences in my application.

Have you seen this problem with the UpdateLayout not working? Do you know of a work around?

Thanks,
Scott
TabControl
Sehe
Top achievements
Rank 1
 answered on 16 Jan 2012
1 answer
82 views
Push Item to Minimized
Is there a way to define an item minimized in xaml (so that it appears in the minimize area by default)?

My list is only 3 items and it looks silly to not have any items in the minimized area (using office_blue theme), so I'd like to push my third item there by default (since it's importance is less, it can be hidden away by default).

OutlookBar
Petar Mladenov
Telerik team
 answered on 16 Jan 2012
1 answer
390 views
How to hide empty grids when using a hierarchy

I am using a RadGridView to display some data in a hierarchy. I am using MvvM so I am building by grid in XAML and have very little code behind.

I have a very simple hierarchy where I have a list of objects (Agents) and each agent can have a list of sub agents and a list of clients. These lists are two separate properties of my agent object, i.e. Agent.Agents and Agent.ClientAccounts. An agent can have a list of clients and a list of sub agents so when the user expands an agent row they will see two child grids at the same level in the hierarchy.

I am using the grid_RowLoaded event to only allow expanding when I have either a list of SubAgents or a list of Clients.

My issue is that when one of the lists of either SubAgents or Clients doesn’t have any records I would like to hide the grid (or not even create it in the first place)

I have tried to set the visibility of the SubAgents and Clients  grids by using a converter so the grids are hidden when the lists have a count of 0 but that didn’t work

Any ideas would be much appreciated

Here is the structure of my grid

<telerik:RadGridView 
        x:Name="grid"
        BorderThickness="0"
        Background="Transparent"
        ShowGroupPanel="False" 
        IsReadOnly="True"
        DataContext="{Binding}" 
        ItemsSource="{Binding Path=AgentList}" 
        RowIndicatorVisibility="Collapsed" 
        GridLinesVisibility="None" 
        telerik:Theming.Theme="{DynamicResource TelerikThemeName}" 
        IsSynchronizedWithCurrentItem="True"
        ShowColumnHeaders="True" 
        AutoGenerateColumns="False" 
        acb:CommandBehavior.Event="MouseDoubleClick"  
        acb:CommandBehavior.Command="{Binding OpenAgentDetailsCommand}" 
        acb:CommandBehavior.CommandParameter="{Binding RelativeSource={RelativeSource Self}, Path=SelectedItem.CustomerId}" RowLoaded="grid_RowLoaded">
 
        <telerik:RadGridView.ChildTableDefinitions>
            <telerik:GridViewTableDefinition/>
        </telerik:RadGridView.ChildTableDefinitions>
 
        <telerik:RadGridView.Columns>
            <telerik:GridViewDataColumn DataMemberBinding="{Binding AccountId}" Header="Account Id" Width="Auto" />
            <telerik:GridViewDataColumn DataMemberBinding="{Binding CustomerId}" Header="CustomerId" Width="Auto" />
            <telerik:GridViewDataColumn DataMemberBinding="{Binding FirstName}" Header="FirstName" Width="Auto"/>
            <telerik:GridViewDataColumn DataMemberBinding="{Binding LastName}" Header="LastName" Width="Auto"/>
            <telerik:GridViewDataColumn DataMemberBinding="{Binding Volume}" Header="Volume" Width="Auto" DataFormatString="{}{0:N0}"/>
        </telerik:RadGridView.Columns>
        
        <telerik:RadGridView.HierarchyChildTemplate>
            <DataTemplate>
                <StackPanel>
 
                    <!--sub agents-->
                    <telerik:RadGridView ItemsSource="{Binding Path=Agents}" AutoGenerateColumns="False" ShowGroupPanel="False" 
                                         Visibility="{Binding Path=Agents.Count, Converter={StaticResource countToVisibleConverter}}">
                        <telerik:RadGridView.Columns>
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding AccountId}" Header="Account Id" Width="Auto" />
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding CustomerId}" Header="CustomerId" Width="Auto" />
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding FirstName}" Header="FirstName" Width="Auto"/>
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding LastName}" Header="LastName" Width="Auto"/>
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding Volume}" Header="Volume" Width="Auto" DataFormatString="{}{0:N0}"/>
                        </telerik:RadGridView.Columns>
 
                        <telerik:RadGridView.ChildTableDefinitions>
                            <telerik:GridViewTableDefinition />
                        </telerik:RadGridView.ChildTableDefinitions>
 
                        <!--sub agents : clients-->
                        <telerik:RadGridView.HierarchyChildTemplate>
                            <DataTemplate>
                                <telerik:RadGridView ItemsSource="{Binding Path=ClientAccounts}" AutoGenerateColumns="False" ShowGroupPanel="False" 
                                                     Visibility="{Binding Path=ClientAccounts.Count, Converter={StaticResource countToVisibleConverter}}">
                                    <telerik:RadGridView.Columns>
                                        <telerik:GridViewDataColumn DataMemberBinding="{Binding AccountId}" Header="Account Id" Width="Auto" />
                                        <telerik:GridViewDataColumn DataMemberBinding="{Binding FirstName}" Header="FirstName" Width="Auto"/>
                                        <telerik:GridViewDataColumn DataMemberBinding="{Binding LastName}" Header="LastName" Width="Auto"/>
                                        <telerik:GridViewDataColumn DataMemberBinding="{Binding Volume}" Header="Volume" Width="Auto" DataFormatString="{}{0:N0}"/>
                                    </telerik:RadGridView.Columns>
                                </telerik:RadGridView>
                            </DataTemplate>
                        </telerik:RadGridView.HierarchyChildTemplate>
 
                    </telerik:RadGridView>
 
                    <!--clients-->
                    <telerik:RadGridView ItemsSource="{Binding Path=ClientAccounts}" AutoGenerateColumns="False" ShowGroupPanel="False" 
                                         Visibility="{Binding Path=ClientAccounts.Count, Converter={StaticResource countToVisibleConverter}}">
                        <telerik:RadGridView.Columns>
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding AccountId}" Header="Account Id" Width="Auto" />
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding FirstName}" Header="FirstName" Width="Auto"/>
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding LastName}" Header="LastName" Width="Auto"/>
                            <telerik:GridViewDataColumn DataMemberBinding="{Binding Volume}" Header="Volume" Width="Auto" DataFormatString="{}{0:N0}"/>
                        </telerik:RadGridView.Columns>
                    </telerik:RadGridView>
 
                </StackPanel>
                                        
            </DataTemplate>
        </telerik:RadGridView.HierarchyChildTemplate>
 
    </telerik:RadGridView>

GridView
James
Top achievements
Rank 1
 answered on 16 Jan 2012
2 answers
402 views
Setting focus to a datatemple textbox
I have a grid view that uses a datatemple for each row to edit data.  when I add a new row I want the cursor to be focused in the textbox in the datatemplate on the row details.  Nothing seems to work.  I have to tab to get to the textbox.  
<Window x:Class="GridviewDataTemplateFocusExample.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:GridviewDataTemplateFocusExample="clr-namespace:GridviewDataTemplateFocusExample" Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <DataTemplate x:Key="DetailView" >
            <GridviewDataTemplateFocusExample:DetailView />
        </DataTemplate>
    </Window.Resources>
        <Grid>
        <telerik:RadGridView HorizontalAlignment="Stretch"  Name="radGridView1" VerticalAlignment="Stretch"
                             ItemsSource="{Binding MyData}"
                             AutoGenerateColumns="False"
                             CanUserInsertRows="True"
                             RowIndicatorVisibility="Collapsed"
                             CanUserDeleteRows="False"
                             ShowInsertRow="True"
                             ShowGroupPanel="False"
                             IsSynchronizedWithCurrentItem="True"
                             AddingNewDataItem="radGridView1_AddingNewDataItem"
                             LoadingRowDetails="radGridView1_LoadingRowDetails"
                             RowDetailsVisibilityMode="Collapsed"
                             RowDetailsTemplate="{StaticResource DetailView}" >
            <telerik:RadGridView.Columns>
                <telerik:GridViewToggleRowDetailsColumn/>
                <telerik:GridViewDataColumn Header="Title" Width="250" DataMemberBinding="{Binding Name}" UniqueName="TitleColumn"/>
            </telerik:RadGridView.Columns>
 
        </telerik:RadGridView>
    </Grid>
</Window>

using System;
using System.Windows;
using System.Windows.Input;
using Telerik.Windows.Controls.GridView;
 
namespace GridviewDataTemplateFocusExample
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.DataContext = new MainWindowVM();
            InitializeComponent();
        }
 
        private void radGridView1_AddingNewDataItem(object sender, Telerik.Windows.Controls.GridView.GridViewAddingNewEventArgs e)
        {
            (this.DataContext as MainWindowVM).AddNewDataObject();
            radGridView1.CommitEdit();
            var gridView = e.OwnerGridViewItemsControl;
            gridView.ScrollIntoViewAsync(gridView.Items[gridView.Items.Count - 1], //the row
                        gridView.Columns[1], //the column
                        new Action<FrameworkElement>((f) =>
                        {
                            var row = f as GridViewRow;
                            if (row != null)
                            {
                                row.IsSelected = true;
                                row.DetailsVisibility = Visibility.Visible;
                            }
                        }));
            e.Cancel = true;
        }
 
        private void radGridView1_LoadingRowDetails(object sender, Telerik.Windows.Controls.GridView.GridViewRowDetailsEventArgs e)
        {
            Keyboard.Focus((e.DetailsElement as DetailView).tbxTitle);
 
        }
    }
}

using System.Collections.ObjectModel;
 
namespace GridviewDataTemplateFocusExample
{
    public class MainWindowVM
    {
        public ObservableCollection<DataObject> MyData { get; set; }
 
        public MainWindowVM()
        {
            MyData = new ObservableCollection<DataObject>();
            MyData.Add(new DataObject("Test 1"));
            MyData.Add(new DataObject("Test 2"));
            MyData.Add(new DataObject("Test 3"));
            MyData.Add(new DataObject("Test 4"));
            MyData.Add(new DataObject("Test 5"));
        }
 
        public void AddNewDataObject()
        {
            MyData.Add(new DataObject("Test ??????"));
        }
    }
 
    public class DataObject
    {
        public DataObject(string name)
        {
            Name = name;
        }
        public string Name { get; set; }
    }
}

<UserControl x:Class="GridviewDataTemplateFocusExample.DetailView"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" mc:Ignorable="d"
             d:DesignHeight="300" d:DesignWidth="300">
    <Grid>
        <Grid FocusManager.FocusedElement="{Binding ElementName=tbxTitle}"  FocusManager.IsFocusScope="True">
            <Border BorderThickness="2" Margin="3" BorderBrush="Black" CornerRadius="12" Padding="5" Background="Transparent" HorizontalAlignment="Stretch" >
                <telerik:RadTabControl Margin="2"  BackgroundVisibility="Hidden" HorizontalAlignment="Stretch" >
                    <telerik:RadTabItem Header="Details"  >
                        <Grid Width="Auto" HorizontalAlignment="Stretch" Background="Transparent" Margin="5" >
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                            </Grid.RowDefinitions>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                                <ColumnDefinition Width="*" />
                            </Grid.ColumnDefinitions>
 
                            <TextBlock Text="Name: " Margin="0,5,0,5" FontWeight="Bold" Grid.Row="0" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Left"  Focusable="False"/>
                            <TextBox Name="tbxTitle" Text="{Binding Name}" Margin="0,5,0,5" Grid.Row="0" Grid.Column="1" 
                                 VerticalAlignment="Center" HorizontalAlignment="Stretch"  Focusable="true"
 
                                 />
 
                        </Grid>
                    </telerik:RadTabItem>
                    <telerik:RadTabItem Header="Page 2" >
  
                    </telerik:RadTabItem>
                    <telerik:RadTabItem Header="Page 3" >
                     </telerik:RadTabItem>
 
                </telerik:RadTabControl>
            </Border>
        </Grid>
    </Grid>
</UserControl>

GridView
Patricia
Top achievements
Rank 1
 answered on 16 Jan 2012
1 answer
128 views
Title Bar
Does Telerik have a control for WPF that's similar to the RadTitleBar for Winforms? I'd like to be able to have a theme-aware Title Bar for WPF.
General Discussions
Hristo
Telerik team
 answered on 16 Jan 2012
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