Questions on UI for WPF Forum

4 answers

827 views

The type or namespace name 'External' does not exist...

I'm getting error: "The type or namespace name 'External' does not exist in the namespace 'Telerik.Windows.Controls'(are you missing an assembly reference?)"

This error is in my MainWindow.g.cs file. It occurred when I added "Telerik.Windows.Controls.ScheduleView.xaml" (OfficeBlue) to my project. Whenever I get this error I can "clean solution" and run and it works. But if I make a change to anything in my project and try to run it, it errors. I tried finding this class reference in the ScheduleView documentation and no luck. If I delete the "using Telerik.Windows.Controls.External;" out of my code I get a bunch of errors. So I assume there has to be some reference that the project is finding.

Any help would be much appreciated.

(This is using the trial version with Blend 4, Windows 7 service pack 1).

ScheduleView

answered on 21 Jun 2012

2 answers

161 views

"Fix" the height of a paged RadGridView

Maybe this is obvious but I can't seem to figure it out.
I have a RadGridView that's displaying paged data (with a RadDataPager).
Let's say the page size is N.
When there are less than N items in the data source, the grid sizes itself exactly to the number of rows.
When there are exactly or more than N items in the data source, the grid sizes itself exactly to N rows (and it will never be any bigger, of course).
Is it possible to "lock" the grid's desired height to the PageSize (so that it doesn't change size regardless of the number of items being displayed, and it's always exactly big enough to show N items, with empty space only if the number of items is less than N).
The grid's containing element will size itself dynamically according to the grid's preferred size.
I don't want to hard-code the Height, for obvious reasons.

GridView

answered on 21 Jun 2012

3 answers

173 views

SelectedItem vs ItemsSource

Hi,

in my RadWindow I have a RadComboBox, when I show my RadWindow, I already have an object and I set the Text property of my RadComboBox but at the same time, I have a running BackgroundWorker who get the ItemSource data of my RadComboBox. The BackgroundWorker take about 3 or 4 seconds to get all the data for the RadComboBox.

When my BackgroundWorker is completed, I set the ItemsSource of my RadComboBox but the Text property of my RadComboBox are not synchronize with their ItemSource. If I click on the dropdown button of my RadComboBox, the corresponding value in the dropdown are highlight.

How I can fix tthis?

Thank's

ComboBox

answered on 21 Jun 2012

3 answers

307 views

mvvm binding, columns visibility and columnheaders

Hi, I have two question I can't find in the forum:

1-. I have a RadGridView binded to datasource, once the data is binded (or binding), how can i tell RadGridView wich columns are visibles and which aren't. (AutogenerateCoumns=true)

2-. Is there a way to bind columnheaders?

We are using MVVM pattern

Thanks

GridView

answered on 21 Jun 2012

3 answers

231 views

Expression Evaluation Engine

Is the engine being used to evaluate text expressions built into the RadExpressionEditor, or is it a separate assembly? I would like to use the RadExpressionEditor to build expressions within a WPF environment, but then I need to be able to take that expression text and rebuild the expression in an environment that does not have references to the WPF related assemblies.

Thanks,
Brian

ExpressionEditor

answered on 21 Jun 2012

4 answers

124 views

In RadDocking, RadContextMenu doesn't work well when RadPane is floating

the contextmenu hind behind the RadPane when performing a right click, does anybody know how to fix this?

ContextMenu

answered on 21 Jun 2012

1 answer

92 views

RadPdfViewer : Manage builtin scroller's mouse events

I need to call a custom method when the slider / scroller of the RadPdfViewer slides up and down. How can I do that ?

PDFViewer

answered on 21 Jun 2012

1 answer

149 views

Getting invalid and valid rows (IDataErrorInfo)

Hi,

I am using RadGridView to display a List of objects that implement IDataErrorInfo, this list is being populated by objects imported from an XML file. Unfortunately some of the records may contain invalid data which the application should point out. Implementing IDataErrorInfo lets me do this wonderfully.

However, I would like to find a way to get these invalid rows, and valid ones, and I have not managed to find a way to do so.

Any ideas?

Thanks,
Daryl

GridView

answered on 21 Jun 2012

0 answers

130 views

RadDataForm Add Button Problem

Dear support,

When I click "Add", fill-in data and then "OK", the data has successfully put in the collection but "Add" button is still disabled.
I have to click "Edit" follow by "Cancel" so that the "Add" button become enabled again.

Now I know what cause the problem.
The dataform was bound to a ListCollectionView of objects that implement IEditableObject and INotifyPropertyChanged.
By design, those objects raised OnPropertyChanged event on EndEdit or CancelEdit method because there were some changes in their internal properties. This made the dataform think the object has been changed again so it didn't enable navigation and Add New buttons.

My question, can we make the dataform pay attention to only those properties bound to UI element under the dataform, or is there any other solution?

thanks,
Meaw

DataForm

asked on 21 Jun 2012

1 answer

75 views

Any built-in support for Navigation Properties from OData sources?

I notice that out-of-the-box the RadGridView auto-generates columns for navigation properties from an OData source, regardless of whether or not they were actually expanded by the query. Is there anything built into the controls to more flexibly handle navigation properties? I was thinking it might be nice to automatically generate hyperlinks in these cells that would issue the appropriate query back to the service when clicked.

It looks like I could roll my own scheme by intercepting AutoGeneratingColumn and setting up a cell template, but then how would I determine the link information from the feed?

GridView

answered on 21 Jun 2012