Questions on UI for WPF Forum

2 answers

91 views

ASP.Net Version

I think an ASP.Net (like DevExpress has) would be great!

Al

Gauges

answered on 13 Dec 2008

4 answers

141 views

GridViewComboBoxEditor - Focus error when using arrow keys.

Greetings,
Since updating to the Q3 release I've noticed an error when using arrow keys to navigate the values in a GridViewComoboxEditor.
This can be seen using the wpf Editor demo. http://demos.telerik.com/wpf/. I used the Country column for testing.

Replication:
1) User enters combo box cell and begins edit.
2) User presses the down arrow key to select the next value in the list. (Or Up arrow key for previous value).

Behavior:
The next item in the list is selected.
Focus is moved to the grid.
The next row in the grid is shown as selected.
Original cell remains in edit.

Expected Behavior.
The next item in the list is selected.
No focus change.
The current (or selected rows) remain selected.
No additional rows are selected.

Thanks,
Chris

GridView

answered on 12 Dec 2008

3 answers

590 views

Setting a global default theme

Just starting out and trying to work through some of the learning curve struggles, but this one has me stumped.

I'm trying to set a default theme for my grids inside a resource dictionary, I've tried the app.xaml file but also without success.

Here's my code:
<ResourceDictionary
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">

<Style TargetType="{x:Type telerik:RadGridView}">
<Style.BasedOn>
<Style TargetType="{x:Type telerik:RadGridView}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type telerik:RadGridView}">
<AdornerDecorator>
<telerik:Theming.Theme>
<telerik:TelerikTheme/>
</telerik:Theming.Theme>
</AdornerDecorator>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Style.BasedOn>
</Style>
</ResourceDictionary>

I started with an edit template and stripped out everything else. When I run my application the grid is blank, actually it is blank in the designer as well as the Properties window. If I add a x:Key value, the grid will reappear. So it is applying my style in some fashion. What am I missing?

Thanks,
-Sid Meyers.

GridView

answered on 12 Dec 2008

2 answers

126 views

event fires two times on RadTab

Hi,

I have a strange error with RadTabControl.
I put a UserControl on a RadTabItem, this UserControl has a TreeView on it. I set the SelectedItemChanged event for the TreeView in the UserControl's Initalized event (i've also tried setting it in the xaml, same result). Now when I select a node the event fires two times (and the selection jumps back to the root node).

When I put this UserControl on a normal wpf TabControl, it works as expected, the event fires once. So I think the problem is RadTabControl related.

Please help me sort this out.

thanks,
Levente

TabControl

answered on 11 Dec 2008

3 answers

212 views

Default Styles

How do I get the telerik controls to look like the default windows controls. I am only using the DatePicker and it has a different visual theme to the rest of my application.

DatePicker

answered on 11 Dec 2008

2 answers

209 views

Display a TimeSpan value in a RadGauge

Hello,

I want to display a TimeSpan within a RadGauge. My thoughts were that I should use a NumericScale. However, I cannot seem to get it to work. I want to make a TimeSpan look like a digital clock in the form of hh:mm:ss.

Is there a way to do this with the RadGauge? If so, is there some sample code that demonstrates this?

Basically, I am looking to create something that looks like the clock in the Time Monitoring Tool found in the demos here: http://demos.telerik.com/wpf/

Gauges

answered on 10 Dec 2008

1 answer

125 views

Displaying the foreign key value in grid (ComboBoxEditor)

I'd like to display the foreign key value rather than the ID in the combobox editors. I found this example (http://www.telerik.com/community/forums/wpf/gridview/how-to-display-the-foreign-key-value-in-grid.aspx), however with the new Q3 release this approach no longer works.

Is there an new approach for handling this now?

Thanks,
Christopher

GridView

answered on 05 Dec 2008

3 answers

123 views

Increase performance of grouping

Hi All.

I have about a 1500 items of CallItem class in List collection.

This is description of CallItem:

    
            public class CallItem  
        
                {  
        
                    private DateTime callDateTime;  
        
                    public DateTime CallDateTime  
        
                    {  
        
                        get { return callDateTime; }  
        
                        set { callDateTime = value; }  
        
                    }  
        
                    private String calledNumber;  
        
                    public String CalledNumber  
        
                    {  
        
                        get { return calledNumber; }  
        
                        set { calledNumber = value; }  
        
                    }  
        
                    private String logicCall;  
        
                    public String LogicCall  
        
                    {  
        
                        get { return logicCall; }  
        
                        set { logicCall = value; }  
        
                    }  
        
                    private Int64 callDuration;  
        
                    public Int64 CallDuration  
        
                    {  
        
                        get { return callDuration; }  
        
                        set { callDuration = value; }  
        
                    }  
        
                    private Double costWithTaxes;  
        
                    public Double CostWithTaxes  
        
                    {  
        
                        get { return costWithTaxes; }  
        
                        set { costWithTaxes = value; }  
        
                    }  
        
                    private Double costWithDiscount;  
        
                    public Double CostWithDiscount  
        
                    {  
        
                        get { return costWithDiscount; }  
        
                        set { costWithDiscount = value; }  
        
                    }  
        
                    private String abonentNumber;  
        
                    public String AbonentNumber  
        
                    {  
        
                        get { return abonentNumber; }  
        
                        set { abonentNumber = value; }  
        
                    }  
        
                    public CallItem(String abonentNumber, DateTime callDateTime, Int64 callDuration, String calledNumber, Double costWithDiscount, Double costWithTaxes, String logicCall)  
        
                    {  
        
                        this.abonentNumber = abonentNumber;  
        
                        this.callDateTime = callDateTime;  
        
                        this.callDuration = callDuration;  
        
                        this.calledNumber = calledNumber;  
        
                        this.costWithDiscount = costWithDiscount;  
        
                        this.costWithTaxes = costWithTaxes;  
        
                        this.logicCall = logicCall;  
        
                    }  
        
                }

I geting all records and bindind they to GridView like this:

    
            List<CallItem> items = GetAllItems();  
        
            dataGridView.ItemsSource = items;  
        
            dataGridView.CreateFilterDescriptions();

And when I (or user) drag and dropping column (for example AbonentNumber) on grouping panel I need to waiting about 35 seconds.

if I heed to waiting about 35 seconds when I need grouping 1500 records then how long I need to waiting if I must grouping about 15000 records or 150000 records?

How i can increase performance of grouping in GridView? Or may be for my task I dont need to use GridView and grouping?

GridView

answered on 05 Dec 2008

3 answers

386 views

When binding, I sometimes get "Exception has been thrown by the target of an invocation"

This has happened on a couple of my WPF pages that use the GridView. I select an item on my list which populates some textboxes. I update those textboxes, click "Update" and then reload the GridView. Reloading the GridView consists of re-retrieving the data and setting the ItemsSource. On this particular page I have, it binds properly the first time, but all subsequent re-binds I get this. Any ideas what might be happening?

GridView

answered on 05 Dec 2008

3 answers

296 views

Vertically Stretch GridView

Hello

I have a WPF GridView with Parent / Child data and would like the GridView to fill the space with as much as possible.

In my test scenario, I have 2 parents. The first parent has approx 1200 records, the second parent has about 4 records.

I have about 50% of the page as white space, though the horizontal scrollbar is at the very bottom of the page as it should be.

I have triad a VerticalAlignment="Stretch" and VerticalContentAlignment="Stretch" with no change.

Any ideas for the resolution is appreciated.

Thank you for great products.

GridView

answered on 04 Dec 2008