Questions on UI for WPF Forum

2 answers

190 views

i get following exception while trying to filter at runtime using UI:
"'System.Object' is not a valid metadata type for type filtering operations. Type filtering is only valid on entity types and complex types."

When i add filter in code :
FilterDescriptor fd=new FilterDescriptor("nazwa",FilterOperator.Contains,"GT");
view.FilterDescriptors.Add(fd);
everything works.

binding code:             QueryableCollectionView view = new QueryableCollectionView(presenter.Model.EntityList);
            view.PageSize = 1000;
            SortDescriptor sd=new SortDescriptor();
            sd.Member = "nazwa";
            sd.SortDirection = System.ComponentModel.ListSortDirection.Ascending;
            view.SortDescriptors.Add(sd);
            radGridView1.ItemsSource = view;

presenter.Model.EntityList contains objects that derive from EntityObject(so i think they are of "entity type" ).
What should i do to avoid this problem?

GridView

answered on 25 Aug 2009

3 answers

176 views

Group header

Hi

Is there a way to make two rows of header
in order to group few columns together
like this

a b c
a1 a2 a3 b1 b2 b3 c1 c2 c3

GridView

answered on 25 Aug 2009

1 answer

161 views

IsBusy property for gridView - why ReadOnly ?

Hi,

I am just wondering if there any reason why IsBusy property of GirdView is readonly? It would be great to be able change this property to True while loading data from database, then assign the data to gridView.ItemsSource and then set IsBusy to false.
My problem is that database which is used by application might be somewhere in the Internet not in local network. So when I have to fetch a lots of data from DB, it may take about 10 seconds. During this time it would be great to set IsBusy to true and when data are fetched, assign the collection to the ItemSource and resotre the grid. Now it looks like this: UI hangs when fetching the data for 10 seconds and then when collection is assigned the busy icon is animated for about 1 sec.

Could you provide some example how to solve such an issue?
Maybe I can change RadGridView soruce code and change setter of IsBusy to public?

Cheers!

GridView

answered on 25 Aug 2009

4 answers

312 views

How to handle foreign keys in RadGridView

Hello Telerik team,

I am using telerik radgridview in one of my WPF application. When i am binding Itemsource property i am binding a object which has foreign key columns, now in radgridview column i am getting the foreign key ID values as expected.

For example:

Binding Table Colums:
TableID
Name
Description
ForeignKeyTableID (FK)

Foreign key table:
ForeignKeyTableID
Value

Now i want to display the value of the foreign key rather than the id value, as id doesn't make any sense to display. What would be the efficient way to do this. I am thinking of using converter while binding, but it would be heavy as i will be working on thousands of records in radgrid.

Looking for a best and efficient way to handle this...

Thanks,
Kranthi

GridView

answered on 25 Aug 2009

1 answer

253 views

Pagination in RadGridView

hello telerik,

how do i implement pagination functionality for a RadGridview, does it have an in-built pagination control?

can i get some idea about implementing the pagination functionality for RadGridView..

thanks,

kranthi

GridView

answered on 25 Aug 2009

6 answers

159 views

RadChart does not display/render when place in a ListBox or ItemsControl

My RadChart does not display when place in a ItemsControl or a ListBox, when the RadChart is part of a DataTemplate that varies on DataType, no plots of my Datapoints are render. Telerik, what's up with that, why can't RadChart render in a ItemsControl and/or ListBox?.

Chart

answered on 24 Aug 2009

1 answer

63 views

Feature request - automatic detection of display

Hi,

these days I stumbled over the "automatic edit selection" as described here.
http://www.telerik.com/help/wpf/gridview-data-editors.html
Although this looks "nothing special" the mechanism behind it allows us to implement our own editor and register is with the system.
I made a code library post about it since this is a real powerful mechanism.
By the way - congratulations for this - I love it!!

And since I have to proof my role as annoying customer I ask if it wouldn't be possible to implement this also for the "display part" of the RadGridView.
So additional to RegisterDefaultEditor(typeof(myDataType), typeof(myDataTypeEditorSettings)) I would like to see something like
RegisterDefaultCellTemplate(typeof(myDataType), typeof(myTemplate)).

Since in this case there is no need for the complex logic of an editor (with editor settings) a simple "Dictionary of DataTemplates" could do the job. At least in the first step.

Regards

Manfred

GridView

answered on 24 Aug 2009

1 answer

80 views

Multiple XCategories in every XCategory

Hi,

I am trying to add multiple barseries where each of them also have another serie that belongs to it.

So basically what I want to do is to have the line (or point) value to be directly above or below the bar that the serie belongs to. Right now the bars are standing next to each other (just like i want them to) but the lines or points that are connected to each bar serie is located in the middle of the XCategory and not in correlation with the bar.

I am assuming that this happens since bar are not drawn on top of each other but lines and points are. So if there is any way to prevent this that would be helpful.

What I want to achieve in the end is to show min/max and standard deviation values for an average bar, so in case there are better ways to do this I would be glad to hear about that too.

Thanks in advance,

Mattias

Chart

answered on 24 Aug 2009

3 answers

143 views

How to start

This is my first experience with WPF and Telerik.

When I create an empty WPF project in VS2008, I'm given a Window1.xaml and the outer component is <Window x:Class="..." >

If I'm going to use the Rad controls throughout, should I replace that with telerik:RadWindow? If so, how? When I drag a RadWindow into my current canvas, it is nested. When I run the app, I don't see the RadWindow.

Essentially I'm looking to have a base window for my app that has a RadPanelBar on the left side as the primary menu, and a main content area that will hold multiple windows created dynamically based on menu selections.

I'm not sure what the foundation of a Telerik WPF app should start with.

Thanks,
ms

General Discussions

answered on 22 Aug 2009

6 answers

1.0K+ views

Way to hide a column?

I have a dataset that is a master/detail, displaying as hierchical data.

The 2 tables are joined on a column called "InvoiceID"

I do not want to show the "InvoiceID" column in the detail data

Without defining every column that should be displayed in xaml, is there a way to specify a column that I want to hide? Thanks

GridView

answered on 22 Aug 2009