Questions on UI for WPF Forum

15 answers

896 views

Hi.
I have created a RadComboBox containing some 10.000 elements.
This ComboBox is horrobly slow...
What can I do ?
My own Ideas vary from
a) Go, get your head checked, 1000 elements are the maximum if you don't want your users to die of old age in front of the screen
to
b) use the MagicallyAutoPaging="True" Property on the Combobox

Yours,
Nils

ComboBox

answered on 22 Apr 2010

6 answers

592 views

WPF RadGridView Filter

Hi,

I have 2 questions regarding the filtering behavior in WPF RadGridView, The first is how to get a DataTable from the filtered data without looping over the records property (maybe generate a Linq Expression from the FilterDescriptors).

The Second is how to clear all filters by code, i tried FilterDescriptors.Clear() this will cancel the filter for the data records but the filter interface still have checkboxes on the previous selected values.

Thanks.

GridView

answered on 22 Apr 2010

9 answers

646 views

Grid does not refresh when grouping and sorting used

HI,

I'm having some troubles with WPF RadGridView (v. 2009.1.312.35). I have a group description and sorting defined on one column.

Sometimes when the underlying collection (ObservableCollection) is being changed, the grid view does not refresh. I need to click on the header of the column to make it refresh and display source elements correctly.

Is there a way to fix this problem?

Thanks,

Ruben.

GridView

answered on 22 Apr 2010

2 answers

131 views

Customizing AutoHide windows in Docking view

Hi,

I wanted to do customize the autohide windows.

1. Remove the tab/icon which is used to expand the the auto hide window? I don't want to show the tab. Instead the windows would be expanded in response to a Button click or some other event. In my user interface, the icon is taking some space, which I don't want to part with. Also the icon doesn't look nice.

2. Also I want to prevent the users from docking this window, so I want to remove the 'docking' icon.

Pardon me if I didn't use the terminology correctly. To help explain what I am trying to do, please refer to the attached image, I want to get rid of the things marked in Red box.

Docking

answered on 22 Apr 2010

1 answer

121 views

GridView in TabControl: unable to assign items source

Hi,

I have TabControl called mainTabs with a TabItem called CurrentTasks. In the CurrentTasks TabItem I show a GridView (say RadGridView1) with a list of tasks which works fine. This GridView is populated in code behind with an ObservableCollection.

As per the logic, each task in the RadGridView1 has some dependent tasks called Predecessors Tasks(tasks that were completed before the selected task was assigned) and Successor Tasks(tasks assigned to other users which are depending on the current task to be completed by the current user).

Now, I want to make the rows of this RadGridView1 expandable so that I can show the details of selected Task in two tabs as Predecessor Tab and Successor Tab. Each of these tabs would have a GridView(say InnerRadGridView1 and InnerRadGridView2) showing a list of tasks respectively.

I am trying to assign the ItemsSource Property for InnerRadGridView1 programatically to an ObservableCollection in the code behind. The problem is that it does not show any intellisence for me to access the InnerRadGridView1 (for eg. I want to assign it as InnerRadGridView1 .ItemsSource = Tasks; where Tasks is my ObservableCollection).

Please provide me a solution to this issue. Im really stuck.

I am also attaching a screenshot of what exactly the navigation flow of my application is.

Cheers,

Syed Nadeem.

TabControl

answered on 22 Apr 2010

3 answers

191 views

How to overlap bars

I can't seem to figure out how to overlap series bars (vertical or horizontal). For example, I have two sets of data and series two is always a subset of series one.

User    Total Sub
------- ----- -----
Bob        37    20
Jane      120    55
Jim        49    23
George      7     7
Sue       145   107

I can get bars side-by-side, but I'd like to float the lower value (it's ALWAYS lower) over the higher values to show comparison/progress. Ideas?

Chart

answered on 21 Apr 2010

1 answer

102 views

Error undocking Grid container in raddock

I'm having an issue when I try to undock the grids container from the rad dock, if I add a group to the grid by dragging a column header first its fine and then it will break if I work in another panel then go back to the one with the grid and try to undock.

It appears to be losing reference to the records or something, I get these errors

There is no source code available for the current location then I have this error description
This row has been removed from a table and does not have any data. BeginEdit() will allow creation of new data in this row.

I'm guessing I need to change the way I binding up my data, but I'm unsure what I should change. It all works fine as long as I dont try to undock the grids pane.

thanks for any help you can provide.

steve

    
            <Window x:Class="Window1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                Title="Window1" Height="300" Width="300"  
        
                    xmlns:radDock="http://schemas.telerik.com/2008/xaml/presentation" 
        
                    xmlns:Local ="clr-namespace:controls" 
        
                    xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"> 
        
                <Grid> 
        
                    <radDock:RadDocking x:Name="radDocking1"  HasDocumentHost="False"> 
        
                            <radDock:RadSplitContainer radDock:DockingPanel.InitialSize="150,150" MaxWidth="600"  
        
                                Name="LeftContainer" InitialPosition="DockedLeft"   > 
        
                            <radDock:RadPaneGroup x:Name="Group1"> 
        
                                <radDock:RadPane x:Name="Pane2" Header="Sales Grid"> 
        
                                    <telerik:RadGridView  Name="RadGridView1"  ItemsSource="{Binding Sales}"> 
        
                                    </telerik:RadGridView> 
        
                                </radDock:RadPane> 
        
                            </radDock:RadPaneGroup> 
        
                        </radDock:RadSplitContainer> 
        
                        <radDock:RadSplitContainer radDock:DockingPanel.InitialSize="200,200" MaxWidth="679" 
        
                                x:Name="RightContainer" InitialPosition="DockedRight" > 
        
                            <radDock:RadPaneGroup x:Name="Group2"> 
        
                                <radDock:RadPane x:Name="Pane4" Header="Properties"> 
        
                                </radDock:RadPane> 
        
                            </radDock:RadPaneGroup> 
        
                        </radDock:RadSplitContainer> 
        
                    </radDock:RadDocking> 
        
                </Grid> 
        
            </Window>

    
            Imports System.Data 
        
            Class Window1 
        
                Private Shared tacust As New DataSet1TableAdapters.SalesSummaryTableAdapter 
        
                Private Shared dscust As New DataSet1 
        
                Private Shared m_sales As DataTable 
        
                Public Shared ReadOnly Property Sales() As DataTable 
        
                    Get 
        
                        Return m_sales 
        
                    End Get 
        
                End Property 
        
                Private Sub RadGridView1_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles RadGridView1.Loaded 
        
                    tacust.Fill(dscust.SalesSummary) 
        
                    m_sales = dscust.Tables("SalesSummary") 
        
                    RadGridView1.ItemsSource = m_sales 
        
                End Sub 
        
            End Class

GridView

answered on 21 Apr 2010

1 answer

95 views

SelectedItem(S)

We have a testmethod.

We create a new RadViewGrid and add a customer:

[TestMethod]

public void OnEditExecuted_OpenDialogOK()

{

ViewMock.SetupProperty(v => v.Grid, new RadGridView());

ViewMock.Object.Grid.Items.Add(_customer[0]);

ViewMock.Object.Grid.SelectedItem = ViewMock.Object.Grid.Items[0];

At this moment, the SelectedItem is a customer. So, that's OK.

But..., the SelectedItemS.Count = 0 !

How is this possible?

GridView

answered on 21 Apr 2010

3 answers

499 views

Add button to ScrollViewer

Hello!

Can you tell me if there is the possibility to add another buttons with custom functionality in the ScrollViewer of a RadCarousel?

Thank you!

Carousel

answered on 21 Apr 2010

3 answers

101 views

Can I do this with the Carousel and Telerik controls?

Hi again. I come from Visual Basic 6 and i want to start with WPF and Telerik controls to simplify my life :D

I want to do an app for home automation

http://www.youtube.com/watch?v=GTkPMvzvC1c

About this sample video , my questions is:
Can i do a similar app with WPF and telerik carousel and controls? with these carousel animation and effects?
Can this app run smooth in older machines? (I mean a dedicated computer with Windows XP , 800Mhz and 512 MB ram?)

thanks

Chili Girl :D

Carousel

answered on 21 Apr 2010