Questions on UI for WPF Forum

1 answer

83 views

Dynamic GridViewColumns filter function throw exception

I have a GridView where the GridViewColumns are created dynamically. We now have data in a column that can sometimes be null. I have kind of figured out how to use the Converter from the binding to change the value based on the value coming in - but this did not fix it. When I click on the filter It throws the error that must be of type Int64.

Here is the code that builds the column:

GridViewDataColumn col = new GridViewDataColumn();

col.Header = column.Name;

col.DataMemberBinding = binding;

col.DataType = column.DataType;

col.IsSortable = true;

if (column.DataType == typeof(Int64))

{

col.DataMemberBinding.Converter = new LongConverter();

}

Here is the converter:

public class LongConverter : IValueConverter

{

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

{

//Int64? convertedValue = (Int64)value;

//if (convertedValue.HasValue)

//{

// return convertedValue.Value;

//}

//else

//{

// return "";

//}

return "N/A";

}

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

{

if (value.ToString().ToUpper() == string.Empty)

{

return new Int64();

}

else

{

return Int64.Parse(value.ToString());

}

You can see I commented all most of the code out on the converter. I was just trying to get it to work. The value was coming back as the type - so I'm not sure whats going on there.

So I really have to issues here:
1) How to properly set the converter on the column datamember binding.
2) Why does the filter still recognize the null value even though I set the value to "N/A"

GridView

answered on 01 Oct 2013

3 answers

90 views

Setting a cells style during edit...on row change clears style

I have a grid that we need to bold the text when the value changes...the code Im using is in the CellEditEnded event handler:

void GridView_CellEditEnded(object sender, GridViewCellEditEndedEventArgs)
{
if(e.NewData != e.OldData)
{
e.Cell.FontWeight = FontWeights.Bold;
}

}

This works fine...BUT when I switch rows the style goes back to its original style. My use case requires that ALL changed values remain bolded.

How can I achieve this?

Thanks,
Ron

GridView

answered on 01 Oct 2013

1 answer

178 views

StyleManager.ApplicationTheme memory leak?

Hey guys,

I have functionality to dynamically change themes via StyleManager.ApplicationTheme. Whenever the user changes themes, there is a roughly 20~30mb spike in memory usage that never seems to get garbage collected. Any idea on what would cause this?

The following code is used to dynamically change the theme:

public Theme ThisApplicationTheme

{

get { return StyleManager.ApplicationTheme; }

set

{

StyleManager.ApplicationTheme = value;

var binding = new Binding("ThisApplicationTheme") { Source = this, Mode = BindingMode.OneWay };

foreach (Window window in Application.Current.Windows)

{

foreach (var element in GetWindow(window).ChildrenOfType<FrameworkElement>().ToList())

{

element.SetBinding(StyleManager.ThemeProperty, binding);

}

Application.Current.MainWindow.SetBinding(StyleManager.ThemeProperty, binding);

}

Thanks.

General Discussions

answered on 01 Oct 2013

1 answer

143 views

Problem with RadChart scroll and zoom

Hi,

I have a chart like the one in the image,the code is the next:

<telerik:RadChart Name="RadChartDemo" Grid.ColumnSpan="3" Content="" Margin="10" Grid.Row="2" BorderThickness="0">

<telerik:RadChart.DefaultView>

<telerik:ChartDefaultView>

<telerik:ChartDefaultView.ChartArea>

<telerik:ChartArea>

<telerik:ChartArea.ZoomScrollSettingsY>

<telerik:ZoomScrollSettings ScrollMode="ScrollAndZoom"/>

</telerik:ChartArea.ZoomScrollSettingsY>

<telerik:ChartArea.ZoomScrollSettingsX>

<telerik:ZoomScrollSettings ScrollMode="ScrollAndZoom"/>

</telerik:ChartArea.ZoomScrollSettingsX>

</telerik:ChartArea>

</telerik:ChartDefaultView.ChartArea>

<telerik:ChartDefaultView.ChartTitle>

<telerik:ChartTitle Content="Tons Per Day" HorizontalAlignment="Center"/>

</telerik:ChartDefaultView.ChartTitle>

</telerik:ChartDefaultView>

</telerik:RadChart.DefaultView>

</telerik:RadChart>

And I create the series using SeriesMapping and ItemMapping. When I run the application I can see both scroll bars but it seems to be disable, I can't scroll nor zoom the chart.

Do I have something missing?

Regards,

Alberto

Chart

answered on 01 Oct 2013

0 answers

98 views

how to assign tool-tip to my text in RadRichTextBox?

Hi
Is there any way to assign tool-tip to text in RadRichTextBox.

I had tried by assigning Cross-reference bookmark by using editor.InsertBookmark(...) and editor.InsertCrossReferenceToBookmark(... , ... , ..) method. Bookmark is implemented but there is tool-tip is missing.

So how to enable tool-tip which normally shows in MS word.

Any alternate ways?

Regards
Sopan Vaidya

RichTextBox

asked on 01 Oct 2013

4 answers

187 views

Row Selection

Hi,

I have a RadPropertyGrid with several lines.
I Looks somehow like this:

<telerik:RadPropertyGrid Item="{Binding TheSetting}" SearchBoxVisibility="Hidden" AutoGeneratePropertyDefinitions="False" SortAndGroupButtonsVisibility="Collapsed" SearchInNestedProperties="False">

<telerik:RadPropertyGrid.PropertyDefinitions>

<telerik:PropertyDefinition GroupName="Allgemein" OrderIndex="0" Binding="{Binding BaseSearchPath, ValidatesOnDataErrors=True, ValidatesOnExceptions=True}" Description="Basispfad zur Suche der CSV Dateien" DisplayName="Basispfad" />

<telerik:PropertyDefinition GroupName="Allgemein" OrderIndex="1" Binding="{Binding Map_FZeit, ValidatesOnDataErrors=True}" Description="Zuordnung Messwertzeit" DisplayName="Messwertzeit" />

<telerik:PropertyDefinition GroupName="Allgemein" OrderIndex="2" Binding="{Binding Map_ZNr, ValidatesOnDataErrors=True}" Description="Zuordnung Messwertzeile" DisplayName="Messwertzeilennummer" />

When I select a TextBox with the mouse the row is not selected.
This results in a strange (wrong) look.

Example (for the code above) - I select the "Messwertzeit" Row Header with the mouse.
The Description shows the correct value.
Then I press TAB -
-- First strange thing - the "Basispfad" TextBox (one line above) gets the focus - not the "Messwertzeit" Textbox as expected.
-- Second strange thing - the description pane still shows the "Messwertzeit" description (not the one of "Basispfad" where I'm editing).
-- Third thing (only a problem with the description) - TAB brings me to the next textbox
There is no way (without using the mouse - I tried TAB - shift TAB) to select the "RowHeader" - to get the correct description.

Is this "normal" and desired?
Can I get a description only using the mouse?

Manfred

PropertyGrid

answered on 30 Sep 2013

1 answer

95 views

RadDatePicker Issue

I found an issue with RadDatePicker. The scenario is that When I select invalid date, RadDatePicker throws an Error and when I move to next control, the invalid date along with the error message disappears. I want that invalid date along with the Error to be displayed even after I moved to next control. Is there a solution?

DatePicker

answered on 30 Sep 2013

1 answer

136 views

RadRibbonView Title Overlapping Min/Max/Close Buttons

Is there a way to prevent the RadRibbonView Title from overlapping the Min/Max/Close buttons when resizing the application window to a smaller width? See attached image for the current look.

Thanks,
Dan

RibbonView and RibbonWindow

answered on 30 Sep 2013

1 answer

62 views

Windows8Touch theme not displaying beginning appiontment drag time

Hello,

I've applied the Windows8Touch theme from the implicit styles RDs and noticed that when dragging to adjust the beginning of an appointment, the time cue that appears does not change while adjusting the appointment's start time. The time cue does change when adjusting the appointment's end time.

Please advise.

ScheduleView

answered on 30 Sep 2013

0 answers

81 views

how to implement both way cross-reference functionality ?

Hi,

I am trying to implement the cross-reference functionality same in MS word.

But in the RichTextBox, after adding the cross reference, the text not allow to click and redirected to bookmark location.

How to do this task.

Help....

Regards
Sopan Vaidya

RichTextBox

asked on 30 Sep 2013