Hi,
I have to load in a RadGridView records from a table which has more than 10 millions of records. In my window (apart from the RadGridView) I also have a RadDataPager to paginate all those records from 100 to 100 records, but my problem is that all of the several millions of records are loaded at the beginning and paginated after that. Because of that, my windows becomes too slow when loading.
I have read in http://www.telerik.com/community/forums/wpf/gridview/gridview-loading-rows---tooks-5-to-10-sec-with-2500-records.aspx
that using LINQ-to-SQL or LINQ-to-Entities eliminates the problem, but I don´t know how to implementate it. I've try it in different ways but always with the same result (window takes too much to load). How do you tell RadDataPager to take next 100 records from last time ".Take()" executed?
Please, if it's possible give me an example of how to bring only the amount of records I want (for example, 100 records) and when user clicks on "next page" of RadDataPager bringing the next 100 records... (I'm currently using WPF with pattern MVVM).

Thanks for answer,

Sonia.

Hi.
I've added RadBusyIndicator to my window, so it's looks like :
    <telerik:RadBusyIndicator Name="rbi" IsBusy="True" IsIndeterminate="False">
    <Grid>
        
        <Grid.RowDefinitions>

(......)

//all grids/wrappanels/buttons/radgridviews goes here

    </Grid>
    </telerik:RadBusyIndicator>
</Window>

And in window i've added method .Loaded, so it changes busyIndicator isBusy value to false.
Problem is that, when im pressed button to open this window all i can see is white screen (without anything), that tooks couple seconds, and then just viewing all controls in window.
How can i force busyIndicator to work while window isn't loaded?

Thanks!

I am working on a radgrid with ComboBox columns and I'm wanting to switch around the way the keyboard manipulates the dropdowns and the grid. I want to navigate through the cells with the arrow keys and when I get to the cell I want I want to hit Enter and that will open the dropdown list of that cell. After I navigate through the items of the dropdown list I want to hit Enter again and the cell no longer be in edit mode and the value i chose to be displayed. Currently I have it behaving similar to that except not exactly. The dropdown will open on Enter and I can cycle through the items, however, when I hit enter again the dropdown closes and the value is selected but the cell is still active and when I use the arrow keys it still sorts through the dropdown items so I have to hit Enter again to commit the data. And when I hit Enter the second time the data is committed and the cell under the cell I just changed is now the selected cell....I don't want Enter to move down. How can I accomplish this. I realize this is kind of confusing so any help would be appreciated thanks.

Hi,

I am creating an application using WPF, MVVM , C#.
I am just wondering if there is a way to save each tile of a RadTileView as image.

So far I manage to save the whole tileview by using the following code:

 private void SaveTileView()
        {
            var imagePath = "C:\\Users\\" + "TestSciChart" + Random.Next(200) + ".png";

            using (Stream stream = new FileStream(imagePath, FileMode.Create))
            {
                var encoder = new TiffBitmapEncoder();
                Telerik.Windows.Media.Imaging.ExportExtensions.ExportToImage(
                    ChartTileView, stream, encoder);
            }
        }

but I haven been able to save each tile separately? Can someone help me please?

this is my tileview declaration:

<telerik:RadTileView    x:Name="ChartTileView"
                                    telerik:PersistenceManager.StorageId="ChartTileView"
                                    Margin="0" Padding="0"
                                    VerticalContentAlignment="Top"
                                    VerticalAlignment="Stretch" 
                                    HorizontalAlignment="Stretch"
                               ColumnsCount="1"
                               IsAutoScrollingEnabled="True"
                               IsDockingEnabled="True"
                               IsVirtualizing="True"
                               ItemsSource="{Binding Views}"
                               ItemTemplate="{StaticResource HeaderTemplate}"
                                    ColumnWidth="*"
                                    RowHeight="250"   
                                    MaximizeMode="Zero" 
                               TileStateChangeTrigger="SingleClick">
            </telerik:RadTileView>


Thanks so much.

Sandra

I'm using the RadGridView GridViewMaskedInputColumn with a mask for a phone number "(###) ###-####", and I would like to have the phone number display with the mask when not being edited in the grid.  I can seem to get the "DataFormatString to work.  I've tried DataFormatString="{}{0:(###) ###-####}" with no luck.  Thanks!

Hi,
<UserControl>
     <telerik:RadGridView.ColumnGroups>
                            <telerik:GridViewColumnGroup Name="CommonID" Header="{Binding DataContext.ID, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}/>  
     </telerik:RadGridView.ColumnGroups>
  <telerik:RadGridView.Columns>
               <telerik:GridViewDataColumn
Header="{Binding DataContext.ID, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}
DataMemberBinding="{Binding CID}" ColumnGroupName="CommonID"/>

</telerik:RadGridView.Columns>
</UserControl>

ViewModel
=========
public string ID {get; set;}

Model
=====
public string CID {get; set;}

Output
=======
RadGrid :
------------------------------------------
       CommonID // but i need E001 here  [Column Group Header]
-----------------------------
E001       // column header
------------
c101



The binding is not working for ColumnGroup header. I have faced the same issue on Column header, but it is resolved using Datacontext.ID,relativesource....and Data is showing properly

Can anyone help me out to resolve this ?

Here is what I've been given:  The logic is bound to the grid as a conditional formatting.  On the RowLoaded Event the logic will see if the equipment is in use already.  If it is, it marks the entire row red with white forground.  However there are two editable cells that must be marked readonly.  If not this form will fail the QA testing.

So with only the RowLoadedEventArgs being passed, how do I get to the object to bind to the edit event to bind an event handler that cancels any edit???

I've seen in several forum posts (like here: http://www.telerik.com/community/forums/wpf/gridview/binding-to-cell-of-gridview-and-datacontext-says-datarow.aspx) that the Data Context for a cell is the entire object, not just the bound property. Is there a way to change this behavior so the data context is only what the column is bound to? We are binding to complex objects that are all the same type (called ValueWithFormat) and would like to set cell properties based on this type. Here's my example cell template.

I want to use FilteringControl(which appears on radgridview/radtreelistview coloumn filters) independently in my user control. Is it possible to use it independently, if yes can some one guide me with some examples...

I just upgraded from the Q1 2013 WPF controls to Q2. I had already converted my app to the new DragDropManager and it was working. After upgrading however my drop handler was never called. My drop target is a RadTreeView, my source is a RadGridView (but I don't think that matters). In addition only certain nodes in my heterogeneous tree are drop targets. I register DragEnter/Leave and Drop handlers in the Loaded event for the data template of the valid tree nodes. Hence when a drag enters the valid node I update the visual cue, when it leaves I update it, and of course when you drop it handles the drop (or it did before Q2).  

After upgrading the drop handler was never called (although the DragEnter and Leave handlers worked fine). I tried all combinations of AllowDrop, IsDragDropEnabled, TreeViewSettings.DragDropExecutionMode = true, and everything else I could find. After MUCH experimentation I found that if I register a DragOver handler on the RadTreeView with exactly one line of code in it (e.Handled = true;) the Drop handler will get called. 

I am just curious if there is an easier way or if I missed something.

Regards
Dave Goughnour