Hi,

We are using the RadMap control (v. 4.0.30319) in a MVVM WPF project .

In some cases we encounter an exception on the AsyncShapeFileReader while calling ReadAsync()

Exception Message: collection was modified; enumeration operation may not execute

Telerik.windows.controls.Map.MapShapeDataVirtualizationSource.QueryItems ( line 440)

I thought it was a cross-threading problem and inserted some changes in my code :

- calling this.Dispatcher.Invoke((Action)(() => AsyncShapeFileReaderObj. ReadAsync() ));       

- using async/ await

but both changes did not solved the problem and the exception still rize.

what could be the problem? Do you have another idea how can i solved it? 

The Main thread is calling the ReadAsync() and the other threads that i could see are background workers of Telerik's Map ...

Thanks,

Tali

Hello

I have complex class like this:

class person
    {
        string name;
        car Car;
    }
    
    class car
    {
        string model;
        string number;
    }

////////////////////////

 ObservableCollection<person> persons  = getAllPerson() ;

mainDG.ItemSource = persons;

////////////////////////

How can I bind it to my RadgridView?

<telerik:RadGridView x:Name="mainDG" Margin="259,0,5,5" AutoGenerateColumns="False" >
                        <telerik:RadGridView.Columns>

                                  <telerik:GridViewDataColumn Header="Car number" DataMemberBinding="{Binding Car.number}"/>//How can I bind it?

                       </telerik:RadGridView.Columns>

</telerik:RadGridView>

Hello Telerik,

On my project, I have a RadDiagram with some shapes, and inside, text is defined.

I need to export this RadDiagram to a PDF File > I create a Bitmap Image from the RadDiagram, and insert this image in the PDF file.

However, texts in the PDF should be selectables. So, before the export, I hide all of texts, and I write them directly inside the PDF after it generation.

From a Textblock, I save primordial informations, and hide the text :

ParsedTextBlock is a custom class to store some properties.

After, I have some methods to export Textblock :

Me._ptb is a list of ParsedTextBlock.

And :

With these methods, for a text not rotated, it's OK. But the problem is when the text is rotated.

You can see the Origin screen, this one is the RadDiagram before exportation, and the Result screen, this one is the result inside the PDF.

And depending to the rotation angle, the result for rotated text is so bad.

My excpectation is that the position from the TextBlock is bad (calculation is false ?)...

I hope you can help me to write at the good place a rotated TextBlock.

Thank you.

I'm getting a parameter count mismatch, I narrowed it down to an indexed property on the viewmodel that the data form is bound to, but not even using.

System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
System.Reflection.RuntimePropertyInfo.GetValue(Object obj, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture)
System.Reflection.RuntimePropertyInfo.GetValue(Object obj, Object[] index)
Telerik.Windows.Controls.RadDataForm.OnCurrentItemPropertyChanged(Object sender, String propertyName)
Telerik.Windows.Controls.RadDataForm.OnCurrentItemPropertyChanged(Object sender, PropertyChangedEventArgs e)
System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)

I saw in the forum other references to this error and some with very similar stack traces. Most said a fix would be in the next version. Is there something I am doing wrong, or is this just a bug in the data form? Is there a way I can override OnCurrentItemPropertyChanged and handle it myself (or skip it in this case, of not actually even using the parameter).

Hi Progress Telerik,

I would like to change the look of the Relation Arrow between tasks. Is there any way to style the relation arrow in GanttView? Please provide the solution to achieve the same.

Thanks and Regards,

Muhammad Azhar Shah

MSC Technology

Here's the behaviour i'm looking for:

With focus on my combobox, I press 'n' once. -> The first item in the list starting with 'n' is selected.

I press 'n' again. -> The second 'n' item in the list is selected.

-------

Is there a combination of flags that causes this behavior?

If not, has anybody already written the event handler to make it work?

Cheers

Hi,

Firstly, we were extremely glad to see the ability of having frozen columns on both the left and the right added to an already great product so thanks for that.

I have been asked to find out if there is a way we can have a visible distinction akin to the split column but without allowing the user to actually move / set what columns are frozen.

is this something that can be achieved easily with a style or is there already a property I am missing that will show the Left/Right FrozenColumnsSplitter but not allow the splitter to be moved?

Many thanks in advance for your help with this