Questions on UI for WPF Forum

3 answers

327 views

RadGridView sometimes duplicates data from ObservableCollection

Hello.

I use control GridView (RadControls for WPF v2013.1.403.4 (Dev))
As source I bound ObservableCollection.
Sometimes after hard manupulating with data in my ObservableCollection I get duplicates in Grid rows.
In such case I can see that collection GridView.Items contains duplicates but in the same time ObservableCollection is ok.

DataLoadMode has default value (is it "Synchronous" ?).

I see topic with similar problem (http://www.telerik.com/community/forums/wpf/gridview/radgridview-duplicates-data-from-observablecollection.aspx).

Please could you advice me which way I can fix my problem (may be it is fixed in new version of control).
Thank you.

GridView

answered on 04 Oct 2013

1 answer

61 views

Looking for a component

Hi guys,

we start working on an agenda project and I'm looking for a specific component. In my project, I want to give to the user the possibility to enter a search criteria to find all free spots matching theirs search criterias in the agenda and I want to show them the search results as you can see in the screenshot I attached.

The vertical representation should be: am, pm and evening or monday..sunday depending of what they want to see.

Before renewing with Telerik, I have to be sure that Telerik have the right component for us.

Thank's guys...

General Discussions

answered on 04 Oct 2013

1 answer

120 views

RadScheduleView swap

I'm swapping themes from ExpressionDark to Windows8Touch for a project. The swap from ExpressionDark to Windows8Touch isn't seamless.

In the Telerik.Windows.Controls.ScheduleView.xaml file (Windows8Touch) I see a reference to telerik:Windows8TouchResource, is this Windows8TouchResource a file I should have local on my computer?

I would appreciate any help on this, thanks.

ScheduleView

answered on 04 Oct 2013

5 answers

1.6K+ views

GridViewDataColumn.IsReadOnly binding incorrectly

I'm trying to bind the IsReadOnly property on a GridViewDataColumn, but it appears to be binding to the DataContext of the GridView instead of the context created by the ItemsSource. My XAML:

<Window x:Class="RadGridViewTesting.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>

<telerik:RadGridView x:Name="radGridView"

AutoGenerateColumns="False"

ItemsSource="{Binding Path=EmployeeList}">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Path=FirstName}"

Header="First Name" UniqueName="FirstName"

IsReadOnly="{Binding Path=ReadOnly}"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</Grid>

</Window>

Simple code behind to create the ViewModel DataContext:

namespace RadGridViewTesting

{

public partial class MainWindow : Window

{

public MainWindow()

{

InitializeComponent();

DataContext = new ViewModel();

}

And finally the ViewModel:

namespace RadGridViewTesting

{

public class Employee

{

public string FirstName { get; set; }

public bool ReadOnly { get; set; }

}

class ViewModel

{

List<Employee> _myList;

public ViewModel()

{

_myList = new List<Employee>();

_myList.Add(new Employee() { FirstName = "John", ReadOnly = true });

_myList.Add(new Employee() { FirstName = "Jane", ReadOnly = false });

_myList.Add(new Employee() { FirstName = "Jack", ReadOnly = true });

}

public List<Employee> EmployeeList { get { return _myList; } }

}

This results in the following output message:

System.Windows.Data Error: 40 : BindingExpression path error: 'ReadOnly' property not found on 'object' ''ViewModel' (HashCode=24397644)'. BindingExpression:Path=ReadOnly; DataItem='ViewModel' (HashCode=24397644); target element is 'GridViewDataColumn' (HashCode=15286079); target property is 'IsReadOnly' (type 'Boolean')

It should be looking for "ReadOnly" on the "Employee" object (same object it's binding the DataMemberBinding to) rather than the "ViewModel" object. The only work-around I've found is to set up DataTriggers for every column I need to be able to disable (in my case several) as mentioned in this post, but that certainly isn't elegant. Is there another known solution?

Thanks,
Louis

GridView

answered on 04 Oct 2013

6 answers

240 views

Footer problem

Hi. Use your control 2009.2.813.35.
When i add for some column textblock (for example) in footer and make Binding on some property from DataContext sometime get error 'Cannot find source for binding with reference' in VisualStudio 'Output'? - This situation happens not always.

Did you face such a problem? how to solve it?

GridView

answered on 04 Oct 2013

3 answers

344 views

Select Text in RichTextBox inside RadGridView

How can I select text and highlight with a yellow background inside a radRichTextBox which is inside a radgridview from c# code behind. Here is my XAML, but when I try to access the radRichTextBox from c# the name is not found?

<telerik:GridViewDataColumn Width="300*" Header="Paragraph" IsGroupable="False" IsFilterable="True" Name="Paragraph" TextWrapping="Wrap" DataMemberBinding="{Binding Paragraph}">

<telerik:GridViewDataColumn.CellTemplate>

<DataTemplate>

<Grid>

<telerik:RadRichTextBox x:Name="radRichPar" FontSize="10" />

<telerik:TxtDataProvider RichTextBox="{Binding ElementName=radRichPar}" Text="{Binding Path=Paragraph, Mode=TwoWay}"/>

</Grid>

</DataTemplate>

</telerik:GridViewDataColumn.CellTemplate>

from C# I want to access radRichPar to highlight some text programmatically..........it does not appear in intellisense......thanks

GridView

answered on 04 Oct 2013

4 answers

571 views

GroupBox in RadTabItem

Hi, I'm using a GroupBox control inside RadTabItem, but the GroupBox's header doesn't display properly when it is placed in RadTabItem.
How can I fix this? I attached the code and a captured image.
Thanks!

<telerik:RadTabControl x:Name="radTabControl" Grid.Row="1" TabStripPlacement="Bottom" >
<telerik:RadTabItem x:Name="Column" Header="Column">

</telerik:RadTabItem>

<telerik:RadTabItem x:Name="WallFoot" Header="WallFoot">
</telerik:RadTabItem>

     <telerik:RadTabItem x:Name="Stair" Header="Stair">
          <GroupBox Header="GroupBoxtest" Margin="10"/>
     </telerik:RadTabItem>

</telerik:RadTabControl>

TabControl

answered on 04 Oct 2013

1 answer

81 views

How to Provide Default focus to the top of the RadComboBoxItems

Hi,
        When I Type into the Radcombobox, and When the typed item is not present in the RadComboBoxItems I need to have default focus to the top of the RadComboBoxItems list.

         Any Solution for this?

ComboBox

answered on 04 Oct 2013

0 answers

80 views

how to set caret position to selection end?

Hi,
How to set the caret position to the end of selection.

Thanks

Sopan Vaidya

RichTextBox

asked on 04 Oct 2013

0 answers

125 views

Is there any control which allow to create audio & video player ?

Hi,

I want to create a player which allow to play audio and video file with different format.

I am currently using 2013.2.611.40 version but not able to fine any control.

Any suggestion from you.

Thanks

Sopan Vaidya

General Discussions

asked on 04 Oct 2013