Hi there, I am using a radgridview and want to allow users to select a format for data within columns, testing this for dates I noticed that it wasn't working for expression columns that contain a string representation of the data rather than a type such as DateTime, if I make one using Now() or Today() the format string does appear to work, is there a way to parse data in an expression column into a datatype?

Hello. I used the sample provided by the SDK. (GridView - Group Selecction)

There was a problem with group sorting.

Please check the image for details.

In sdk Source (MyBehavior.cs) ======================================

private IEnumerable<object> GetSubGroupItems(IGroup gr)
{
if (!gr.HasSubgroups)   ★ <<<< This alert  (System.NullReferenceException: Object reference not set to an instance of an object.)
{
return gr.Items.OfType<object>();
}
else
{
List<object> items = new List<object>();
foreach (var subGr in gr.Subgroups)
{
items.AddRange(GetSubGroupItems(subGr));
}
return items;
}
}

========================================================================================

I want to sort by header group. Could you solve it?

Thanks.

Hi,

i have a RadComboBox where the ItemsSource is bound to a list of strings, the Text to a String and where IsEditable is true.

When setting the Text (in viewmodel) to a value, which is not included in the list of strings, it shows the "suggested" text (like when i enter it manually in the box), not the text which was set.This occurs when the viewmodel value is set delayed (not in ctor).

Here is a small sample code.

MainWindow.xaml

MainWindow.cs

ViewModel.cs

After the value "3" is set, the combobox shows 300.

Thanks

Hi,

I have this very simple style for my RadMaskedNumericInput control

Everything works fine except when the control receives focus, the background color does not change (remains green).  How come ?

Kind Regards,
Hans

How do I have to configure the RadMaskedNumericInput Control so that:

1. the user can enter any decimal number with any precision, with or without a decimal separator, positive or negative 

2. no mask placeholders or literals are visible (no _ and a the decimal separator only visible when the user actually entered one)

The style for my RadWindows is not being overriden from the default theme. I don't have the same issue with other telerik controls like RadButton, the style gets set fine for them. Why is this happening? How can I set a RadWindow style?

MyWindow.xaml

My App.Xaml file contains MergedDictionaries

Here are the individual xaml files

RadWindow.xaml

RadButton.xaml

 Hello,

In my application I need to update the ItemsSource every few seconds, I would like to know what would be the best way to perform this.

I might have up to 600 items divides

I have an ObervableCollection object, every time I receive new data I clear the ObervableCollection object and then I add the new data, something like this:
 

I wonder if it would be better to update my ObervableCollection object (update existing items, add the new ones, and delete those that no longer exist) than clear and add all again.

What I want to achieve is to reduce the rendering time.

I hope you can give me some advice.

Thanks in advance,

Alberto

Hi,

I have populated the MultiColumnComboBox DropDown Items using a DataTable

I would like to preselect the SelectedItems onload, so that they are hilited in the DropDown Box, and the corresponding Display-values are shown in the select textbox.

Adding DataRows to the SelectedItems property seams to do the trick for the DropDown List, but the values are not shown in the select textbox.

How do I trigger the select textbox to be filled (with multible values)? 

/Brian

Hello.

I found something unknown while using the hierarchical menu.

Click the hierarchical menu and click the ESC or menu to hide the hierarchical menu.

I made it short as a gif, but I hope it helps you understand.

Attach the source. What is the problem.

Xaml

ViewModel

Model

Thanks.