Questions on UI for WPF Forum

3 answers

413 views

[Solved] 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

323 views

[Solved] 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

5 answers

594 views

Turning animation off

What is the best way to completely turn animation off? I tried setting all of the properties to TimeSpan of zero, as well as setting AnimationSettings to null. My window has 23 charts on the screen when it loads, each with a bar and line series. I still see an odd flicker when the window loads. It looks like it briefly displays the bar and line pieces in various places, then it positions and sizes everything (after that it looks fine...this happens in about a second). Maybe the animation is still there, but it is trying to happen very fast.

Chart

answered on 03 Dec 2008

1 answer

138 views

Animation Errors in DataGrid

Hi,

I am receiving (quite frequently) the following in my Project Output Screen when using the DataGrid for WPF

    
            System.Windows.Media.Animation Warning: 6 : Unable to perform action because the specified Storyboard was never applied to this object for interactive control.; Action='Stop'; Storyboard='System.Windows.Media.Animation.Storyboard'; Storyboard.HashCode='14445493'; Storyboard.Type='System.Windows.Media.Animation.Storyboard'; TargetElement='Telerik.Windows.Controls.GridView.GridViewExpandableRow'; TargetElement.HashCode='14788679'; TargetElement.Type='Telerik.Windows.Controls.GridView.GridViewExpandableRow'

and

    
            System.Windows.Media.Animation Warning: 6 : Unable to perform action because the specified Storyboard was never applied to this object for interactive control.; Action='Stop'; Storyboard='System.Windows.Media.Animation.Storyboard'; Storyboard.HashCode='14445493'; Storyboard.Type='System.Windows.Media.Animation.Storyboard'; TargetElement='Telerik.Windows.Controls.GridView.GridViewRow'; TargetElement.HashCode='1651401'; TargetElement.Type='Telerik.Windows.Controls.GridView.GridViewRow'

Is there a way to resolve this. I would really prefer that it didn't happen.

Cheers

Justin

GridView

answered on 02 Dec 2008

1 answer

162 views

Collapsing all group rows.

Hi All!

How I can collapsing all groupHeaders rows by programming grouping?

Source code of grouping:

    
                        dataGridView.GroupDescriptions.Clear();  
        
                        Telerik.Windows.Data.RadGroupDescription desc = new Telerik.Windows.Data.RadGroupDescription("LogicCall");  
        
                        Telerik.Windows.Data.SumFunction funcCallDuration = new Telerik.Windows.Data.SumFunction("CallDuration", "CallDuration", "Duration:");  
        
                        desc.AggregateFunctions.Add(funcCallDuration);  
        
                        dataGridView.GroupDescriptions.Add(desc);

PS. May I collapsing all groupHeader when user drag'n'drop fields to the grouping panel?

GridView

answered on 01 Dec 2008

1 answer

204 views

My own AggregateFunction

Hello!

I have a table with time of call in seconds.
I grouping my table and add a SumFunction.
All works great!

But I need display result of SumFunction like this: HH:MM:SS where HH - hours, MM - minutes and SS - seconds.

Can you tell me how to do it?

I can create inheritance class from SumFunction like this:

    
            public class mF : Telerik.Windows.Data.SumFunction  
        
                {  
        
                    public mF()  
        
                    {  
        
                    }  
        
                    public mF(string propertyName, string calculationField, string caption)  
        
                    {  
        
                        base.Name = propertyName;  
        
                        base.SourceField = calculationField;  
        
                        base.Caption = caption;  
        
                    }  
        
                    private String GetTime(Decimal totalSeconds)  
        
                    {  
        
                        Int32 hours = (Int32)Math.Floor((double)totalSeconds / (double)3600);  
        
                        Int32 minutes = (Int32)Math.Floor((double)(totalSeconds - (hours * 3600)) / (double)60);  
        
                        Int32 seconds = (Int32)totalSeconds - (hours * 3600) - (minutes * 60);  
        
                        return hours.ToString() + ":" + minutes.ToString() + ":" + seconds.ToString();  
        
                    }  
        
                    public override Telerik.Windows.Data.AggregateResult Calculate(Telerik.Windows.Data.GroupRecord targetGroup)  
        
                    {  
        
                        Telerik.Windows.Data.AggregateResult result = base.Calculate(targetGroup);  
        
                        result.Value = GetTime(Convert.ToDecimal(result.Value, System.Globalization.CultureInfo.CurrentCulture));  
        
                        return result;  
        
                    }  
        
                }

But this class properly work only if I have 1 grouping.
If I add another one grouping i have exception (what it was necessary to expect, because format HH:MM:SS SumFunction cant convert to Decimal).

Please, help.

GridView

answered on 01 Dec 2008

1 answer

126 views

[Solved] Error while building Examples Solution

Hi,

The Visual Studio C# Examples Solution is not buildable.
The first error is in CarDashboard.Example.xaml.cs (Line #91):
- no overload for method 'Begin' takes '0' arguments

The C# Samples application crashes also after a few seconds.

My Environment:
- CLR3.5
- VS2008SP1
- Silverlight 2.0
- SQL Server 2005
- Telerik Build 2008.3.1105.35

Btw. The online WPF (Silvelright) demo does crash while switching from one sample to another.

Cheers,
Jani

General Discussions

answered on 01 Dec 2008

3 answers

223 views

[Solved] Theme mod

Is there a way I can modify the colors on the simple theme?

(using the grid) When an item is highlighted, I want the text color to be white instead of black. Thanks

General Discussions

answered on 26 Nov 2008

4 answers

111 views

No preview for RadGridView in Blend

Hi there,

We are trying to incorporate RadGridView (RadControls for WPF Q2 2008) into our solution with Blend.

However we are unable to preview the Grid and that's odd, because it does work perfectly fine when copy&pasting the XAML code into any other solution that we have tested.

We are working on a large WPF application using .NET Framework 3.5 and yes, we have added all references to Telerik dlls.

Any clues as to what is preventing the preview of of the RadGrid View from within Blend?

Thank you all.

Rafael Minuesa

GridView

answered on 26 Nov 2008

8 answers

222 views

RadControls DEMO for WPF crashes

I installed it to test to see if it's good for me, but it keeps crashing every couple of seconds, whenever I click anything in the DEMO window.
My OS version is Vista 64-bit, I have installed VS 2008 and .Net framework 3.5 SP1.
Thanks.

Description:
Stopped working

Problem signature:
Problem Event Name:   CLR20r3
Problem Signature 01:   telerik.windows.examples.exe
Problem Signature 02:   1.0.1.0
Problem Signature 03:   49142f0e
Problem Signature 04:   System.Data
Problem Signature 05:   2.0.0.0
Problem Signature 06:   4889ece0
Problem Signature 07:   2742
Problem Signature 08:   29
Problem Signature 09:   System.Data.SqlClient.Sql
OS Version:   6.0.6000.2.0.0.256.1
Locale ID:   5146

General Discussions

answered on 26 Nov 2008