Questions on UI for WPF Forum

1 answer

158 views

Exception in cell validation on RadGridView edit mode, disables keyboard

Hi,

When there is an exception thrown during cell validation in RadGridView edit mode, the keyboard is disabled.

Added the sample code below. Please let me know if this issue can be fixed.

// App.xaml

<Application x:Class="SampleAppWithRadGridView.App"

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

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

StartupUri="MainWindow.xaml"

DispatcherUnhandledException="Application_DispatcherUnhandledException" />

// App.xaml.cs

private void Application_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)

{

e.Handled = true;

MessageBox.Show(e.Exception.Message);

}

// MainWindow.xaml

<telerik:RadGridView Name="gridView" IsReadOnly="False" EditTriggers="F2" Width="200"></telerik:RadGridView>

// MainWindow.xaml.cs

public partial class MainWindow : Window

{

IList<Student> studentList = new List<Student>();

public MainWindow()

{

InitializeComponent();

InitializeStudentList();

LoadGrid();

}

void InitializeStudentList()

{

studentList.Add(new Student { FirstName = "Robert", LastName = "Williams" });

studentList.Add(new Student { FirstName = "Eric", LastName = "James" });

studentList.Add(new Student { FirstName = "Randy", LastName = "Spencer" });

gridView.ItemsSource = studentList;

}

void LoadGrid()

{

gridView.CellValidating += HandleCellValidating;

}

void HandleCellValidating(object sender, GridViewCellValidatingEventArgs e)

{

if (studentList.Any(s => s.FirstName == e.NewValue.ToString()))

{

e.Handled = true;

throw new Exception();

}

GridView

answered on 19 Nov 2014

1 answer

159 views

scrollindexintoviewasync puts record on bottom of screen

Hello,

I am using scrollindexintoviewasync to keep my record in the screen after an edit. I have the below code. It reloads the grid and then calls the ScrollIndexIntoView to display the record. But it is displaying at the bottom of the grid. Could someone please give me an idea why please?

private void EditItem(object sender, Telerik.Windows.Controls.GridViewRowEditEndedEventArgs e)
{
GridViewRow row = e.Row;
int index = this.RadGridView.Items.IndexOf(this.RadGridView.SelectedItem);
GridData recordChanged = (GridData)e.NewData;
dataService.EditRecord(recordChanged);
this.RadGridView.ItemsSource = dataService.GetGridData();
this.RadGridView.ScrollIndexIntoViewAsync(index, null, new Action<FrameworkElement>((f) => { (f as GridViewRow).IsSelected = true; }), null);

LoadTablesAndGrid();
}

Thank you,
Aryn

GridView

answered on 19 Nov 2014

5 answers

281 views

How to filter in Unbound mode

So, when using RadDataFilter in unbound mode, how does the actual filtering get done? I've subscribed to the FilterDescriptor events so I know *when* to do it, but not *how*. Do I need to iterate over the FilterDescriptors and write filtering code myself? I don't see how I can do that, since the only function available on those descriptors is CreateFilterExpression(Expression instance), but I can't find any documentation in the Telerik help on it. What is the instance parameter? Is there a sample that actually demonstrates this?

- Lutz

DataFilter

answered on 19 Nov 2014

7 answers

3.1K+ views

date picker setting for selecting only month and year.

Hi,
I want my date picker to show only months and year in the calender. and on selection the date picker should show only the selected month and year(mm/yy). This kind of date picker is required in case of getting expiry date for credit card.
I tried to set some formatting string in my xaml page but it didn work.
Any help in this regard will be appreciating.

Thanks,
Anil

DatePicker

answered on 19 Nov 2014

1 answer

108 views

Layout not working for custom pasted nodes

Suppose I copied a sub-tree and pasted on another node. It got pasted. But the bounds it take as 0,0 so all the nodes and its children appear on top of each other.
To fix this, in my MyCustomPaste() function, I called the same function which telerik has called in mind map diagram demo for layout.

So my aim is to call any default layout so that nodes get realigned into appropriate position once the pasting of new nodes is done.

settings.Roots.Add(this.diagram.ContainerGenerator.ContainerFromItem(this.maintViewModel.Source.Items.OfType<object>().ElementAt(0)) as IShape);

this.diagram.Layout(LayoutType.Tree, settings);

this.diagram.AutoFit();

This layout works for the remaining of the nodes which have not been touched by my custom cut and copy function. But the rest of the children of the node which is copied, still come on top of each other. Any fix for this?

Diagram

answered on 19 Nov 2014

2 answers

250 views

Customizing Connections and shapes styles

hi there.
i have a data source in which i have to major objects. think of it as a graph in which object type one are nodes and object type two are connections.
i produced these using rad diagram and list of my types perfectly but problems shown up while i had to object type one which had more than one connection to each other. connections are overlapping on each other. it is important for me to make them separated in order to make content of connections readable.
would you please help me to find a solution?
regards
Arian

Diagram

answered on 19 Nov 2014

2 answers

206 views

Setting the current cell border to inactive color when GridView looses focus

Hi,

I have a styling question:

When a GridView looses focus it is possible to set the background of a GridViewRow to a color that indicates, that the selection is inactive (like Selector.IsSelectionActive). Now at the same time, I want to set the Background_Current border of a GridViewCell to an inactive color. Because there is no VisualState like "CurrentUnfocused" on a GridViewCell, I do not know how to achieve this.

I thought about binding somehow to the state of the parent row, but could not find a way. Any ideas?

Thx

GridView

answered on 19 Nov 2014

3 answers

331 views

ShapeFileReader: The DBF file is invalid or has unsupported format

Hi There

Control: RadMaps
Version: 2014.3.1021.45
License: Trial

I'm trying to load ESRI Shapefile inside RadMap using InformationLayer manually, but getting this issue "The DBF file is invalid or has unsupported format."
The shapefiles which I'm referring to is running fine in other window application.

Telerik example link which I'm referring is here http://www.telerik.com/help/wpf/radmap-features-shapefiles-support.html

Here is a WPF project that can reproduce the issue: https://www.dropbox.com/s/tr2vorqfbllbn6r/TelerikRadMap.rar?dl=0

Have attached the screen shots.

Thanks in Anticipation.

Map

answered on 19 Nov 2014

4 answers

352 views

Custom attributes on element

Hi,

Is it posible to set and get custom attributes on Span, ImageInline, Table and other RadRichTextBox elements? Cant find any info in this topic.

RichTextBox

answered on 18 Nov 2014

1 answer

161 views

RadGridView when exception thrown on cell editing disables keyboard

Hi,

When an exception is throw during cell validation in RadGridView edit mode, disables the keyboard.

I am using Telerik for WPF 2014 - Q2 (Version-2014.2.0729.45).

In the attached sample, click on the first cell (Robert), Click F2 to begin the edit mode.
Try providing a name that is already exists (Eric) and exception will be thrown.
Close the message box and try typing anything in the cell which will not accept any keyboard inputs.

Please let me know if this issue can be fixed.

GridView

answered on 18 Nov 2014