Questions on UI for WPF Forum

1 answer

116 views

RadPaneGroup ItemTemplateSelector not working

I am attempting to use an ItemTemplateSelectorselector with the RadPaneGroup control.

<telerik:RadPaneGroup x:Name="RadPaneGroupMain" ItemsSource="{Binding OpenDocuments}" ItemTemplateSelector=" {StaticResource OpenDocumentTemplateSelector}">

</telerik:RadPaneGroup>

The ItemTemplateSelector is defined as a static resource on the window. It is getting instantiated (tested via breakpoint in constructor) but the DataTemplateSelector.SelectTemplate method is never called. Code for the DataTemplateSelector is below.

internal class ModuleNodeEntityDataTemplateSelector : DataTemplateSelector

{

public const string NoModuleEntityEditorTemplateKey = "NoModuleEntityEditorTemplate";

public override DataTemplate SelectTemplate(object item, DependencyObject container)

{

var containerTyped = (RadPaneGroup)container;

return (DataTemplate) containerTyped.Resources[NoModuleEntityEditorTemplateKey];

}

Docking

answered on 13 Feb 2015

3 answers

299 views

Multi select combobox in RadGridview

Hi,

We have the requirement to use multi select combobox as the column in RadGridview and also have detail section below should have the multi select combobox which can be bindable with selected item property (collection). It is going to be twoway bindable.

Selecting the detail section dropdown should reflect the RadGridview selected row column and vise versa.

Please have a look on the attached image which holds the explanation of the same. It will be appreciated, if you can provide the solution with example.

Thanks,

GridView

answered on 13 Feb 2015

2 answers

113 views

RadCartesianChart Background

I've got a RadCartesianChart with an Linear X and Y axis. The Y axis goes from 0 to 11 I'm trying to change the background of the plot area only between 10 and 11 (Showing a Warning Area). Anyone have a good idea how to do this?

Tom

ChartView

answered on 12 Feb 2015

1 answer

38 views

User selection of columns in RadGridView

How can I enable user selection of one or more columns in RadGridView?

GridView

answered on 12 Feb 2015

5 answers

251 views

Dynamic Merge Field With Table

Hello,

I use ExpandoObject in RichTextbox for get and set mergefields dynamicly, but i have problem with tables. When i use merge fields in tables i can not give any inline. How can i use dynamic merge fields with table.

Thanx.

RichTextBox

answered on 12 Feb 2015

3 answers

296 views

How to find if Workbook is empty??

Team,

What property is available on a RadSpreadsheet to find if the workbook/activeWorkSheet is empty ?

Currently Im using the below code to find the same.
var stream = new MemoryStream();
new XlsxFormatProvider().Export(radSpreadsheet.Workbook, stream);
if (stream.Length == 3309)
{
//Empty Workbook
}

Spreadsheet

answered on 12 Feb 2015

0 answers

165 views

Mismatch between RadComboBox's selected and displayed values when using a delayed PropertyChanged

I'm trying to figure out why I'm experiencing a mismatch between the displayed and selected value in a RadComboBox.

The below code is a shot at a minimal working example.

If I place the cursor in the RadComboBox (dropdown closed) and press the down key a few times (quickly) the RadComboBox and TextBlock will show different values. From the looks of it the TextBlock is showing the correct value while the RadComboBox is not updating correctly.

Why is this and how can I solve it?

MainWindow.xaml

<Window x:Class="RadComboBox1.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"

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

<Grid>

<StackPanel>

<TextBlock Name="MyTextBlock" Text="{Binding SelectedItem.Name}"/>

<telerik:RadComboBox

Name="MyRadComboBox"

ItemsSource="{Binding Items}"

SelectedItem="{Binding SelectedItem, Mode=TwoWay}"

IsEditable="True"

DisplayMemberPath="Name"

CanAutocompleteSelectItems="False"

OpenDropDownOnFocus="True"

TextSearchMode="Contains"

IsFilteringEnabled="True">

</telerik:RadComboBox>

</StackPanel>

</Grid>

</Window>

MainWindow.xaml.cs

using System;

using System.Collections.ObjectModel;

using System.ComponentModel;

using System.Windows;

using System.Windows.Threading;

namespace RadComboBox1

{

public partial class MainWindow : Window

{

public MainWindow()

{

InitializeComponent();

var dataContext = new RadComboBoxDataContext();

MyRadComboBox.DataContext = dataContext;

MyTextBlock.DataContext = dataContext;

}

public class RadComboBoxItem

{

public string Name { get; set; }

}

public class RadComboBoxDataContext : INotifyPropertyChanged

{

public ObservableCollection<RadComboBoxItem> Items { get; set; }

private RadComboBoxItem _selectedItem;

public RadComboBoxItem SelectedItem

{

get

{

var value = _selectedItem;

System.Diagnostics.Debug.WriteLine("GET=" + (value != null ? value.Name : "<null>"));

return value;

}

set

{

System.Diagnostics.Debug.WriteLine("SET=" + (value != null ? value.Name : "<null>"));

_nextSelectedItem = value;

_timer.Stop();

_timer.Start();

}

private RadComboBoxItem _nextSelectedItem;

private DispatcherTimer _timer;

public RadComboBoxDataContext()

{

_timer = new DispatcherTimer();

_timer.Interval = TimeSpan.FromMilliseconds(1000);

_timer.Tick += OnTick;

Items = new ObservableCollection<RadComboBoxItem>();

for (var i = 0; i < 10; i++)

{

Items.Add(new RadComboBoxItem { Name = "Item" + i});

}

SelectedItem = Items[0];

}

private void OnTick(object sender, EventArgs args)

{

_timer.Stop();

_selectedItem = _nextSelectedItem;

OnPropertyChanged("SelectedItem");

}

public event PropertyChangedEventHandler PropertyChanged;

protected virtual void OnPropertyChanged(string propertyName = null)

{

PropertyChangedEventHandler handler = PropertyChanged;

if (handler != null)

{

handler(this, new PropertyChangedEventArgs(propertyName));

}

ComboBox

asked on 12 Feb 2015

1 answer

281 views

How to show busy Indicator or similar when filtering grid

I have telerik radgrid with many records. when applying a filter on columns it take some time to load the records. Here i want to show a busy indicator or similar process while applying the filter. I tried setting radgrid busy property to true in "Filtering" event and setting it to false in "Filtered" event. But it doesn't seems working.

Ex:
    private void Grid_Filtering(object sender, GridViewFilteringEventArgs e)
   {
            grid.IsBusy = true;
    }

    private void Grid_Filtered(object sender, GridViewFilteredEventArgs e)
   {
            grid.IsBusy = false;
   }

Any help would be appreciated. Thanks in advance.

GridView

answered on 12 Feb 2015

2 answers

76 views

Binding Hierarchical Data to Multiple RadGridViews

I have a QueryableDataServiceCollectionView that contains hierarchical data: Contracts and Contract Amounts.

I would like to bind the QueryableDataServiceCollectionView to separate RadGridViews (one for contracts, and one for the contract amounts base on the selected contract).

I have successfully done the above in a single RadGridView using the HierarchyChildTemplate, but would prefer to separate the above into separate grids.

Is this possible?

Any assistance on this is Much Appreciated.

-MikeF

GridView

answered on 12 Feb 2015

1 answer

110 views

Demos Broken For Expression Editor

Wasn't sure how to report this, so I will post it in the forums.

Your Demos for Expression Editor in WPF are broken on both the installed version and the source.

Reproduce In Source Demos:

1. Explore All Controls
2. Click Expression Editor
3. Boom Blows up on line 223 of the SingleExampleViewModel.cs file (In the downloable Demos) --
4. File Not Found Exception
5. An exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll but was not handled in user code

Additional information: Could not load file or assembly 'ExpressionEditor, Culture=neutral' or one of its dependencies. The system cannot find the file specified.

Reproduce in installed Demos:
1. Explore All Controls
2. Expression Editor
3. More Choices (Either of the RadGrid Integration).
4. Attached Screenshot.

Works on the Silverlight online examples, but there is only one option, and I was looking at the other.

Regards,

Bart

ExpressionEditor

answered on 12 Feb 2015