Questions on UI for WPF Forum

1 answer

88 views

Preview richtext????

How i can preview richtext? Thank

RichTextBox

answered on 16 Mar 2011

1 answer

93 views

PageUp/PageDown doesn't move selection

I'm using a RadGridView with SelectionUnit=FullRow. When I press the up/down arrow keys, the selected row moves to the new row that I've navigated to. When I press PageUp or PageDown, the grid scrolls, but the selection isn't updated. I've tried using a CustomKeyboardCommandProvider, but it seems like the PageUp/PageDown keys are handled specially by the grid: even when I return an empty List of ICommands, the grid still scrolls up and down.

Any ideas on how to handle this?

GridView

answered on 16 Mar 2011

1 answer

1.3K+ views

Enable/Disable button according Items count in XAML

Hi!

I would like to know how to enable a button when items.count > 0 and disable it when items.count == 0 but into XAML using binding. I did this:

<Button x:Name="btnAceptar" Content="Aceptar" Command="{Binding GrabarCommand}" IsEnabled=

"{Binding ElementName=grdGrid, Path=Items.Count, Converter={StaticResource ConvertidorHabilitacionItemsGrid}, Mode=OneWay}"

>

converter is:

public class ConvertidorHabilitacionItemsGrid : IValueConverter

{

public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

{

return !((int)value == 0);

}

public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

{

throw new NotImplementedException();

}

But it not works

thanks

GridView

answered on 16 Mar 2011

2 answers

112 views

Background color and selecting

For the selected items I do not see the selected color for the columns that have a background color. here is how i am setting them

<telerik:GridViewDataColumn Header="QTR" UniqueName="Quarter" Background="Silver" DataMemberBinding="{Binding Quarter}" Width="50" />

GridView

answered on 16 Mar 2011

2 answers

125 views

Column Filtering

I have 3 radio buttons that will do the following
1) rbAll: Get all the values
2) rbMapped: Get all the values where the program column is not blank
3) rbUnMapped: Get all the values where the program column is blank
I have all the button clicks go to the below method
I am getting a blank results for all them. Any ideas

Telerik.Windows.Controls.GridView.FieldFilterDescriptor columnDescriptor = new Telerik.Windows.Controls.GridView.FieldFilterDescriptor("Program", typeof(System.String));

if (rbAll.IsChecked.Value)

{

columnDescriptor.Filter1.Operator = Telerik.Windows.Data.FilterOperator.IsGreaterThan;

columnDescriptor.Filter1.Value = "0";

return;

}

if (rbMapped.IsChecked.Value)

{

columnDescriptor.Filter1.Operator = Telerik.Windows.Data.FilterOperator.IsNotEqualTo;

columnDescriptor.Filter1.Value = "";

}

else if (rbUnmapped.IsChecked.Value)

{

columnDescriptor.Filter1.Operator = Telerik.Windows.Data.FilterOperator.IsEqualTo;

columnDescriptor.Filter1.Value = "";

}

rgvSellingTitles.FilterDescriptors.Add(columnDescriptor);

GridView

answered on 16 Mar 2011

1 answer

78 views

TileView is not working properly when app has several windows

Hello! Recently found bug with RadTileView. In my project I have several modeless windows that have RadTileView inside them. Inside my main window TileView is working good, but inside all other windows item dragging inside RadTileView is buggy, when I start drag - there is no animation there and RadTileViewItems are not repositioned during drag operation. Only when I release mouse button I can see a result. And also if I spend some time dragging items in that TileViews, app often crashes with stack overflow in Telerik.Windows.Controls.Navigation.dll. Finally I've found the solution for that - always set Application.Current.MainWindow to window that is active at the moment. But this is not very convenient. Can you help me to solve that issue?

Best regards,
Ivan Petroff

TileView

answered on 16 Mar 2011

4 answers

430 views

Differentiate between left/right click

I created a context menu for each row in a gridview following this example - http://blogs.telerik.com/vladimirenchev/posts/09-04-09/how_to_radgridview_for_silverlight_row_context_menu_in_three_simple_steps.aspx and it works fine without the SelectionChanged event.
Now, the problem is that I want a user to be able to left-click a row and it will take them to another page:

    
            private void radGVInspectionForm_SelectionChanged(object sender, Telerik.Windows.Controls.SelectionChangeEventArgs e) 
        
                    { 
        
                        ////Get the reference to the selected item 
        
                        object mySelectedRow = radGVInspectionForm.SelectedItem; 
        
                        ////Get the id of the form 
        
                        string id = ((InspectionFormDS.InspectionFormTableRow)mySelectedRow).Id; 
        
                        ////Navigate to the edit form page 
        
                        this.NavigationService.Navigate(new DisplayInspectionFormPage(Convert.ToInt32(id))); 
        
                    }

But this code fires when I try to right-click a row to get to the context menu. So the SelectionChanged event fires for both left and right clicks.
How can I figure out which mouse button was clicked in the SlectionChanged event so if a right button is clicked, then show context menu, if a left button is clicked, then navigate to other page?

GridView

answered on 16 Mar 2011

1 answer

90 views

Example code for UI Virtualization

Hi,

1) Could you please provide an example code for the Treelistview UI Virtualization code? Also, should it be "LINQ-Based Data Engine" always to avail the UI Virtualization feature? If yes then provide an example with LINQ based.

2) UI Virtualization still should work even if my Treelistview control has some editable columns?

Thanks,
Suman

TreeListView

answered on 16 Mar 2011

4 answers

191 views

Can't set time portion for datetime-picker column

Hello,

we have the following problem on a radgridview that is bound to an observable collection of entities (entities of EF class):

After binding the collection to the grid the date is shown with its time portion just as expected. Problem is, when setting / edting the date (either manual or via the picker) the time is being re-set to 00:00:00, which can't be changed. When manually trying to specify the time it is again re-set to 00:00:00. Is there a way to edit the time portion as well, i.e. to set the time somehow (this feature would be crucial for us!!!!).

Our xaml is pretty standard:

    
                        <telerik:RadGridView x:Name="radBerthingSlots" 
        
                            AutoGenerateColumns="False" 
        
                            MaxHeight="500" 
        
                            IsEnabled="True" 
        
                            ItemsSource="{Binding BerthingSlots}">  
        
                            <telerik:RadGridView.Columns> 
        
                                <telerik:GridViewDataColumn Header="High Tide Date" DataMemberBinding="{Binding HighTideDate}" />
        
                            </telerik:RadGridView.Columns> 
        
                        </telerik:RadGridView>

I tried a couple of things including adding a timespan property to our EF class to circumvent the issue, but I have given up now (spend already 2 days on this).

Please advise....

Regards...

M

GridView

answered on 15 Mar 2011

1 answer

113 views

Advanced exporting

Hi,

what I have: a simple gridview with list of patients.
what I need to do: export the selected patients to excel, with details that are not in the gridview, like their measurements, activities and a graph generated by the telerik chart control.
so my question is: how should I do this, taking advantage of the export features of the gridview?

Thanks!
L

GridView

answered on 15 Mar 2011