Questions on UI for WPF Forum

1 answer

133 views

I have a Problem from LoadOnDemand for TreeView

Hi

i have problem following this scenario :

TreeView use LoadOnDemand and CheckList

1. parent node checked;
2. parent node expand;

i want to result that is all check of child node for parent node

but all not checked for checkbox for child node for parent node

how to do checked for all checkbox of child node for parent node??

thank you

TreeView

answered on 08 Dec 2011

3 answers

175 views

[Solved] clear selectedcolor

hello,

I use a colorselector in a raddropdownbutton (on a ribbon), to select color for several objects.
i have a framework as described bellow.

I'd like that each time i click on "color" button, the selectedcolor is empty.
because i need to be able to apply the same color for different objects, and sometimes user doesn't select all at one time, but select one defines a color, the selects another object and want to define same color. then he needs to change color selection, then reopen colorselector to choose right color.

<Window x:Class="tlk_colorpicker.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:tlk="http://schemas.telerik.com/2008/xaml/presentation"

Title="MainWindow" Height="350" Width="525">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<tlk:RadDropDownButton Content="Color" x:Name="color">

<tlk:RadDropDownButton.DropDownContent>

<tlk:RadColorSelector SelectedColorChanged="PredefSelectedColorChanged" NoColorVisibility="Collapsed" />

</tlk:RadDropDownButton.DropDownContent>

</tlk:RadDropDownButton>

<Rectangle x:Name="oRect" Width="50" Height="50" Grid.Row="2" Fill="AliceBlue" />

</Grid>

</Window>

private void PredefSelectedColorChanged(object sender, EventArgs e)

{

oRect.Fill = new SolidColorBrush(((RadColorSelector)sender).SelectedColor);

color.IsOpen = false;

}

thanks for your expertise
Aurore

ColorPicker

answered on 08 Dec 2011

2 answers

218 views

[Solved] Customize item ToolTip placement?

Is there a way to customize the ToolTip placement for an item tooltip within the WPF RadChart? It looks like it always uses MousePoint but I would like to have the tooltips shown above their source DataPoint. Ideally I would like to specify a CustomPopupPlacementCallback similar to WPF ToolTips.

The WPF equivalent property is ToolTipService.Placement. I did not see any similar properties on the ItemToolTip2D class. I found a ChartTooltipBehavior class in the WPF documentation which was promising but it only appears to apply to Windows Phone.

Thanks for any help or suggestions that can be offered.

Chart

answered on 08 Dec 2011

1 answer

255 views

Printing page range

Hello Telerik,
I'm following the demo titled "GridView Printing Paged Data" and I got some problem selecting a print range... since my view can have a lot of items I wish to let the user select a range...

Here's my PrintPreview method

public static void PrintPreview(GridViewDataControl source)

{

Window window = new Window();

window.Title = "Print Preview";

DocumentViewer documentViewer = new DocumentViewer();

PrintDialog printDialog = new PrintDialog();

printDialog.PageRangeSelection = PageRangeSelection.UserPages;

printDialog.UserPageRangeEnabled = true;

printDialog.MaxPage = 40;

documentViewer.Document = ToFixedDocument(ToPrintFriendlyGrid(source), printDialog);

window.Content = documentViewer;

window.ShowDialog();

}

It shows me only Print alla pages...what am I doing wrong?
Thanks
Paolo

GridView

answered on 08 Dec 2011

3 answers

93 views

How to prevent EventRouting from grid to grid?

Hi Folks,
I've got a RadGridView with a details view that itself contains three RadGridViews.
The problem is, events from the inner Grid e.g. SelectionChanged or MouseDoubleClick are transported somehow to the outer Grid.
This leads to serious problems, for example the outer grid collapses the details when the user double clicks in the inner gridview..
How can I prevent the outer grid accepting events from controls of the details page ?
(Is this a common event routing issue ?)

Best regards
Oliver

(P.S. or, vica versa, how to prevent the "inner" controls sending events to the outside? There's this structure: The outer grid contains a RadTabControl, some tabs, each tab contains a Grid which contains three RadGridViews and some buttons)

GridView

answered on 08 Dec 2011

0 answers

117 views

Tool Tips on Grid cell template

Hi,

We are using Telerik WPF controls (ver. 2011.2.920.35) and we are trying to accomplish tooltips in the case of a validation failure in one of the grid cells.

Attached is a screenshot that highlights two cells - one with a combobox and the other with a text field. We want the validation errors to be presented for the cell with a combobox just like the way it gets presented for a text field column.

Please let us know how can we do that.

Any help is very much appreciated.

Regards,
Shalini

GridView

asked on 08 Dec 2011

1 answer

131 views

ColumnWidthChanged does not fire when ColumnWidth is changed via ViewModel

Hi,

I have a scenario where I need to update the layout of a RadGridView when I change the width of a column from my ViewModel.
My first approach was to use the ColumnWidthChanged event, but it does not fire.
Is this intended behavior?
I could trigger the UpdateLayout() call from my ViewModel, but it does not belong there because it is entirely UI related stuff...

Any suggestions?

Best Regards,
Christian

GridView

answered on 08 Dec 2011

2 answers

184 views

RAD GRID with Custom Filtering Control

Hi,

As i was trying to create user control(Filtering) and want to attache with RAD GRID. Perhaps it's done but my events for Filtering is not getting fired. Can any one provide a small example for this with source code.

GridView

answered on 08 Dec 2011

1 answer

105 views

Find in GridView

Hi,

I was asked to implement feature to find values in grid (user wants to see all rows so i cant use filters)
user wants (picture)
(1) field to input search text
(2) button to find all rows (kind of bookmark)
(3) button to iterate in find items (find next)

is there built in Search in grid (without filters) ?
I made this feature with this code:

private void btnFind_Click(object sender, RoutedEventArgs e)         {             btnFind.IsEnabled = false;             scrollIntoFindIndex = 0;             string searchText = txtFind.Text;             dgDynGrid.SelectedItems.Clear();             foreach (object o in dgDynGrid.Items)             {                 if (o is DataRowView)                 {                     for (int z = 0; z < (o as DataRowView).Row.ItemArray.Count(); z++)                     {                         try                         {                             string t = (o as DataRowView).Row.ItemArray[z].ToString();                             if (t.IndexOf(searchText, StringComparison.InvariantCultureIgnoreCase) >= 0)                             {                                 dgDynGrid.SelectedItems.Add(o);                                 break;                             }                         }                         catch                         {                             //if it cant be converted to string, i will not find in this field                         }                     }                 }             }             btnFind.IsEnabled = true;             ScrollIntoFind(0);         }         int scrollIntoFindIndex = 0;         private void ScrollIntoFind(int i)         {             if (dgDynGrid.SelectedItems.Count > i)             {                 dgDynGrid.ScrollIntoView(dgDynGrid.SelectedItems[i]);             }             else             {                 scrollIntoFindIndex = 0;                 MessageBox.Show("Završila je pretraga, idučim klikom se pretražuje od početka", "Kraj pretrage", MessageBoxButton.OK, MessageBoxImage.Information);             }         }         private void btnFindNext_Click(object sender, RoutedEventArgs e)         {             scrollIntoFindIndex++;             ScrollIntoFind(scrollIntoFindIndex);         }

but I am sure there must be better way to do this.
I would appreciate any hint

Thank you

GridView

answered on 08 Dec 2011

1 answer

195 views

How to cancel edit appointment?

I would like to disable editing action (editing appointment via double click). How to acomplish that?

I tried with:
private void RadScheduler_AppointmentEditing(object sender, AppointmentEditingEventArgs e)
        {
            e.Cancel = true;
        }

but it doesnt work.

ScheduleView

answered on 08 Dec 2011