Questions on UI for WPF Forum

2 answers

445 views

Show loading progress when a window was loaded

Hello,

I'm using RadWindow to show dialog with information. After the dialog opening my software loads data from database, while the process is in progress I would like to show a user all the dialogs, all controls and BusyIndicator. However, I didn't find a correct event to handle. The way I found which should works is to use Activated event, but it didn't helped me. Data loads firstly, and then dialog appears for a user.
The code I use:

View:

<telerik:RadWindow

...

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

...

>

<telerik:EventToCommandBehavior.EventBindings>

<telerik:EventBinding Command="{Binding OnActivatedCommand}" EventName="Activated" />

</telerik:EventToCommandBehavior.EventBindings>

<telerik:RadBusyIndicator

BusyContent="Loading..."

IsBusy="{Binding IsBusy}"

IsIndeterminate="True">

...

<telerik:RadWindow/>

ViewModel

public class ViewModel: ReactiveObject

{

public ViewModel()

{

OnActivatedCommand = ReactiveCommand.Create(() =>

{

IsBusy = true;

Thread.Sleep(5000); //Loading data simulation

IsBusy = false;

});

}

private bool _isBusy;

public bool IsBusy

{

get { return _isBusy; }

set { this.RaiseAndSetIfChanged(ref _isBusy, value); }

}

public ReactiveCommand OnActivatedCommand { get; private set; }

}

Window

answered on 18 Aug 2017

2 answers

148 views

How do I extract the error icon to use in other controls

I would like to take the row error indicator icon and display it in a different control (not a gridview). Is this possible?

GridView

answered on 17 Aug 2017

1 answer

107 views

Change Filter Control

Hi,

I've created my own Filtering Control how can i change default filter control to my control?

GridView

answered on 17 Aug 2017

1 answer

320 views

GridView.Items.CommitEdit() not making changes as expected?

Hello,

I have a radgridview that populates with data from a database. I also have three empty columns for entering in information. The problem I am having is that whenever I enter in information into the columns and click out of the cell, the information disappears and the gridview doesn't update accordingly. I think I have my code set up right, so I'm unsure of what my issue could be. Here is my code for my xaml:

Here is my code for the gridView_CellEditEnded event which attempts to commit any edits made to those cells:

bool handle = true;

private void gridView_CellEditEnded(object sender, GridViewCellEditEndedEventArgs e)

{

if(e.EditAction == GridViewEditAction.Commit && handle)

{

handle = false;

gridView.Items.EditItem(this.gridView.CurrentItem);

gridView.Items.CommitEdit();

handle = true;

}

If anyone is able to help me understand what I'm doing wrong, it would be greatly appreciated. I've read every forum and thread I could on this and could not fix my issue.

GridView

answered on 17 Aug 2017

1 answer

262 views

Collection was modified; enumeration operation may not execute

I have an application that is extremely close to your ChartView Live data demo. The only real difference is that my data is being fed by the query results of a service and my chart exists in a user control, not the main window. The results are provided back to me in a KeyValue pair list, which I then loop through and parse to get the actual values I need. This in turn is added to a private collection. The chart's collection is a public collection, which is supposed to call and get the private collection. I say supposed to, because at the moment that piece does not work. I can run the code and everything work just fine with no errors, but the moment I bind the data source in the chart's XAML file, I start getting the collection modified error. If I remove the binding, everything runs perfect. I'm currently using UI for WPF R2 2017 SP1.

Is there an actual live data demo where the data is being fed by the results of a query on a timer interval that I can refer to? Everything I have seen thus far are embedded random number generators, which are not realistic in my situation. Thanks.

ChartView

answered on 16 Aug 2017

1 answer

298 views

Draw Line with Arrow Direction in Rad Map between two coordinate

Hi Team,

I have a requirement to display flow with Arrow line from one coordinate to another in Rad Map. Currently, i am using ArcGisMapProvider in Topographic mode. I am not sure how to achieve this.

As this needs to be done urgently Any help will be appreciated.

Thanks in Advance.

Map

answered on 16 Aug 2017

25 answers

733 views

Multiple GanttTasks on One Line?

Support Team,

We just started using your GanttView and we have a requirement to have multiple events or "GanttTasks" on a single line. It appears that whenever I add a GanttTask or child to a GanttTask, it always creates a new line item for the task. Is there anyway to represent multiple events or tasks on a single line?

Kind Regards,

Maurice

GanttView

answered on 16 Aug 2017

1 answer

242 views

Connection Manipulation Adorner for custom shape

I have a custom shape – following along with http://docs.telerik.com/devtools/wpf/controls/raddiagram/howto/create-custom-shape

I do not see connection manipulation adorners for this item when I include it on a diagram.

I have tried to set the IsConnectorsManipulationEnabled property to true in the constructor of the custom shape.
I also tried using RadDiagramShape instead of Telerik.Windows.Controls.Diagrams.RadDiagramShapeBase as the base, but that didn't work either.

I tried to adda built in shape, and I can see the Connection Manipulation Adorner for that shape when it is selected, but not the custom shape

Any thoughts on how I can get those to appear for this example?

Diagram

answered on 16 Aug 2017

1 answer

373 views

No empty strings

My scenario is that I'm binding to a string value and I don't want empty strings. By default the value is null, but if I change it to something and then go back and clear it the value is now an empty string. The OOB TextBox exhibits the same behavior.

I've implemented an IValueConverter that through Convert and ConvertBack eliminates any possibility of an empty string; however, I'm still left wondering if there's a better approach. Please enlighten me if there is.

WatermarkTextBox