Questions on UI for WPF Forum

2 answers

112 views

Visual issue with resizing of form with chart control.

Hi.

Is there any solution to avoid heaviest redraw and flickering during form resize operations in cases when charting control placed on form?
I noticed this strange behaviour only on chart control. Issues easily reproduced on your demo sample (zoom.zip). Launch it and try to resize form with mouse.
You can notice here not painted background appears on new form rectangle till the moment when chart drawn. This is very noticeable even if to use core i7 with 32Gb ram and video card with 1gb ram, and that effect had very bad impact on presentation charts when intensive using it.

I hope that there is some solution to avoid that behaviour. Please help to find solution.
Thank you in advance.
Alex.

ChartView

answered on 25 Mar 2014

4 answers

249 views

GroupRenderMode="Flat" and style binding errors

I am getting binding errors in the debug log when I use GroupRenderMode="Flat" with styles that depend on the ItemsSource item values. It looks as if each row is trying to bind to the RadGridView's DataContext in addition to the actual items. The style is applying correctly, the only difference I can see is the new errors in the debug log.

Below is a small example showing the problem. Note the binding error for every line in the grid:

System.Windows.Data Error: 40 : BindingExpression path error: 'IsComplete' property not found on 'object' ''MainWindow' (Name='')'. BindingExpression:Path=IsComplete; DataItem='MainWindow' (Name=''); target element is 'GridViewRow' (Name=''); target property is 'NoTarget' (type 'Object')

which does not occur if GroupRenderMode="Nested". It's trying to bind to MainWindow object instead of an Item.

Is this a bug or have I done something wrong somewhere?

Thanks,
Louis

<telerik:RadGridView ItemsSource="{Binding Path=Items}" AutoGenerateColumns="False" GroupRenderMode="Flat">

<telerik:RadGridView.Resources>

<Style TargetType="{x:Type telerik:GridViewRow}">

<Style.Triggers>

<DataTrigger Binding="{Binding Path=IsComplete}" Value="False">

<Setter Property="Background" Value="Red"/>

</DataTrigger>

</Style.Triggers>

</Style>

</telerik:RadGridView.Resources>

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="ItemName" DataMemberBinding="{Binding Path=ItemName}" Width="*" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

public class Item

{

public string ItemName { get; set; }

public bool IsComplete { get; set; }

}

public partial class MainWindow : Window

{

public ObservableCollection<Item> Items { get; set; }

public MainWindow()

{

InitializeComponent();

Items = new ObservableCollection<Item>();

for (int i = 0; i < 5; i++)

Items.Add(new Item()

{

ItemName = "Object " + i,

IsComplete = (i % 2 == 1 ? true : false)

});

DataContext = this;

}

GridView

answered on 25 Mar 2014

7 answers

231 views

RadDiagramConnection SourceCapType

I am using the Arrow5Filled and Arrow5 SourceCapType's to differentiate between 2 different join types in my diagram. When a user double clicks the join line I throw up a popup and allow them to enter/edit information about the join. The problem I am facing is that the Arrow5 SourceCapType is not clickable unless you get right on the line (very fiddly), opposed to the Arrow5Filled which is clickable anywhere in the shape. How can I make the Arrow5 SourceCapType to have the same behavior as the Arrow5Filled SourceCapType?

Diagram

answered on 24 Mar 2014

1 answer

65 views

Can I Get a Hold of a WPF 3.5 build?

I understand you are not supporting WPF 3.5 officially, but if I buy a license, can I still get a hold of the latest WPF .NET 3.5 build without support? I'm in a bind here, and I know from experience that Telerik is the best thing out there. Our company can only develop with .NET 3.5 for customer deployment reasons with various clients. Currently I'm stuck modifying the plain vanilla .NET 3.5 WPFToolkit DataGrid and open source codeplex files such as TreeViewEx. Although they do the job, I don't completely trust them as much as I trust a third party tool such as Telerik, and have already run into hurdles with them that are eating up my time fixing them.

best,

-Mike Gold

General Discussions

answered on 24 Mar 2014

3 answers

151 views

Group Multiple Categories

I love the examples you have showing how you can group by a category. Is it possible to add multiple categories to an appointment and group by it? For example, lets say using your TV Schedule example, a show might be Sports and Documentary. So when Grouping, I would like to see the Appointment come up in both Sports and Documentary. Obviously, I have to be able to select multiple categories. But how to group by them as well? Would be a HUGE Help if you could give me some direction.

ScheduleView

answered on 24 Mar 2014

1 answer

162 views

WPF - Telerik schedule view recursive block creation with shift key

Hi,

I tried to create a schedule view grid with recursive block feature.

For Radscheduleview - EnableSimpleReccurrenceRendering="True" RecurringSelectionModifier="Shift"
Active view definition - <telerik:WeekViewDefinition Orientation="Vertical" GroupHeaderDateStringFormat="{}{0:yyyy MMMM dd}" TimerulerMajorTickStringFormat="{}{0:%h t}" DayStartTime="05:00" DayEndTime="05:00" VisibleDays="30"/>

I am able to create recursive blocks in all the areas, except last row 04 30 to 05 00 AM in the grid.
If i set grid start and end as 05 00 AM to 04:59 AM then it is working fine.

Pls suggest me the way to achieve this.

-Sugumar Panner selvam

ScheduleView

answered on 24 Mar 2014

2 answers

299 views

href of <a> anchor tags is getting stripped out

The problem that I'm encountering is the xhtml that I'm passing in to the telerik RadRichTextBox is being modified by removing parts of the <a> anchor tag. Specifically, the href and a custom property (not shown in my example). I've include the xhtml that I send into the editor and what I get out from the editor. The links in the editor do not work so I know that the link tag is being stripped when I set the xhtml to the document.

Here is the Get/Set that I use.

public string HtmlText

{

get

{

string xhtml = new HtmlFormatProvider().Export(Document);

return xhtml;

}

set

{

Trace.WriteLine(xhtml);

Document = new HtmlFormatProvider().Import(xhtml);

Trace.WriteLine(new HtmlFormatProvider().Export(Document));

}

xhmtl from the first Trace output (href="http://www.google.com" is there)
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body style="FONT-SIZE: 14pt; FONT-FAMILY: Terminal; COLOR: #000000; DIRECTION: ltr">
 

<a id="BC3BE1011F754A44B7BE22BA0208FB21" name="BC3BE1011F754A44B7BE22BA0208FB21" href="http://www.google.com" style="cursor:pointer;">test link to google</a>fdsa


 


<a name="98E8EC0711AA4508BDAE5A97A4FDA86F" href="http://www.google.com" style="cursor:pointer;">test link to google</a>


 


<a name="3C42D11201D24B7E8848383B02A7F119" href="http://www.google.com" style="cursor:pointer;">test link to google</a>

</body>
</html>

xhtml out of the editor, the href is missing

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>Untitled</title><style type="text/css">
p { margin-top: 0px;margin-bottom: 0px;line-height: 1.15; }
body { font-family: 'Verdana';font-style: Normal;font-weight: normal;font-size: 16px; }
.Normal { telerik-style-type: paragraph;telerik-style-name: Normal;border-collapse: collapse; }
.TableNormal { telerik-style-type: table;telerik-style-name: TableNormal;border-collapse: collapse; }
.NormalWeb { telerik-style-type: paragraph;telerik-style-name: NormalWeb;margin-top: 6.66px;margin-bottom: 6.66px;border-collapse: collapse; }
.s_9397EFD2 { telerik-style-type: local;font-family: 'Arial';font-size: 18.6666666666667px;color: #000000; }
.p_C499D8E6 { telerik-style-type: local;margin-top: 0px;margin-bottom: 0px; }
.s_24B402CC { telerik-style-type: local;font-family: 'Arial';font-size: 18.6666666666667px;color: #0000FF; } </style></head><body>  <a name="BC3BE1011F754A44B7BE22BA0208FB21">test link to google</a>fdsa   <a name="98E8EC0711AA4508BDAE5A97A4FDA86F">test link to google</a>   <a name="3C42D11201D24B7E8848383B02A7F119">test link to google</a> </body></html>

RichTextBox

answered on 24 Mar 2014

2 answers

76 views

Focus stays on right hand side instead of being on left hand side

I have a RadMaskedDateTimeInput for DateTime where I am displaying Time. Now when I click on inbuilt Clear Button, the focus stays on right most side.
Is there a way to get focus on left most side, as it was in the previous version (2013.2.724.40), but my current installed version is 2013.3.1204.40.
Any help will be much more appreciated.

Thanks

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 24 Mar 2014

1 answer

242 views

Call methods from ViewModel

Let's suppose I have a RadPaneGroup in a WPF view.

Now I want to do this:

var x = new RadPane();

myRadPaneGroup.AddItem(x);

This must be done in the ViewModel NOT code behind.

How do we accomplish that?

General Discussions

answered on 24 Mar 2014

1 answer

174 views

How to update RowDetails after editing a row cell value?

Hi,

I'm pretty new to Telerik WPF programming, so please forgive me any dumb questions.

I have a GridView control which displays its data through a ValueConverter which retrieves the data from a complex data structure in memory. I use a DataTemplate which displays additional information from the complex data structure using the same ValueConverter.
This works just fine.
If I now edit a cell value in my GridView, the data gets correctly updated in my data structure, but the value displayed in RowDetails still shows the old value. Even if I close and reopen the RowDetails, the old value remains visible.
I guess this is because of this:
www.telerik.com/help/wpf/radgridview-row-details-programming.html
LoadingRowDetails - the LoadingRowDetails event is raised immediately after the FrameworkElement has been loaded from the Row DetailsDataTemplate. It is raised the very first time the row details are about to be shown. Once this event has been fired, it will never fire again for that row. However, if the row is recycled and then realized, it starts its "life" again, this event will be fired again the first time the details are about to be shown.

Do I need to manually fire the LoadingRowDetails event to get the data updated in the RowDetails? Any other thoughts how to do this? Any code examples or internet pointers how to do this?

Thanks for your help.

Best regards,
Markus

GridView

answered on 24 Mar 2014