Questions on UI for WPF Forum

6 answers

292 views

[Solved] Binding SeriesDefinition properties. RadChart is not updated

Hi,

I am trying to implement a binding for some properties of SeriesDefinition for RadChart in XAML. Here is a part of my XAML:

<telerik:RadChart.SeriesMappings>

<telerik:SeriesMapping LegendLabel="Rates" CollectionIndex="1">

<telerik:SeriesMapping.SeriesDefinition>

<telerik:LineSeriesDefinition AxisName="Rate" ItemLabelFormat="0.00 \%">

<telerik:LineSeriesDefinition.Visibility>

<Binding Path="ChartRateSeriesVisible" Source="{StaticResource ViewModel}" Converter="{StaticResource BooleanToSeriesVisibilityConverter}" />

</telerik:LineSeriesDefinition.Visibility>

</telerik:LineSeriesDefinition>

</telerik:SeriesMapping.SeriesDefinition>

</telerik:SeriesMapping>

</telerik:RadChart.SeriesMappings>

This binding works fine, it gets the value from my ViewModel, so series are either visible on invisible.

The issue is the following:
I have a CheckBox on my View (UserControl defined in XAML) which is also binded to the same property of ViewModel (ChartRateSeriesVisible property). And I want to control the visibility of a series by clicking on the checkbox. CheckBox's binding is defined property. I can see in the trace that checking/unchecking the checkbox updates the value of ChartRateSeriesVisible property.

But chart is not updated automatically. Only then I reload the chart completely (by updating its ItemsSource for instance), my LineSeries is hidden or visible depending on the value of ChartRateSeriesVisible.

What am I doing wrong or what am I missing?
In the telerik's sample application 'Simple Filtering' almost the same approach is used! Series Visiblity property is also binded to the ViewModel's property, etc.

I am using WPF 3.5 and the version of telerik assemblies is 2010.2.924.35.

Thanks in advance.

Chart

answered on 21 Jul 2011

3 answers

193 views

Error Binding String Value to X Axis using MVVM.

Hi,

I am using MVVM Architecture, When I tried to bind ClientID (int value) to X Axis, everything seems working fine, but when I tried to bind Client Name (String Value) to X Axis. I am getting Error saying "Input string is not in correct format".

How Can I bind Custom String Value to X Axis using XAML (no Code Behind)?

<telerik:RadChart x:Name="RadChart1" ItemsSource="{Binding Data}" Grid.Row="0" Grid.Column="0" Width="700" >

<telerik:RadChart.SeriesMappings>
<telerik:SeriesMappingCollection>
<telerik:SeriesMapping LegendLabel="CandleStick Series" >

<telerik:SeriesMapping.SeriesDefinition >

<telerik:CandleStickSeriesDefinition />
</telerik:SeriesMapping.SeriesDefinition>

<telerik:ItemMapping FieldName="High" DataPointMember="High" />

<telerik:ItemMapping FieldName="Low" DataPointMember="Low" />

<telerik:ItemMapping FieldName="Open" DataPointMember="Open" />

<telerik:ItemMapping FieldName="Close" DataPointMember="Close" />

<telerik:ItemMapping FieldName="CName" DataPointMember="XValue" />
</telerik:SeriesMapping>

</telerik:SeriesMappingCollection>

</telerik:RadChart.SeriesMappings>

<telerik:RadChart.DefaultView>

<telerik:ChartDefaultView>

<telerik:ChartDefaultView.ChartArea>

<telerik:ChartArea>

<telerik:ChartArea.AxisX>

<telerik:AxisX LabelRotationAngle="90" Title="Client Name"> </telerik:AxisX>

</telerik:ChartArea.AxisX>

<telerik:ChartArea.AxisY> <telerik:AxisY ExtendDirection="Down" AutoRange="False" MinorTickPointMultiplier="5" Step="{Binding Interval}" MinValue="{Binding MinValue}" MaxValue="{Binding MaxValue}" Title="Blood Volume (mL)">

</telerik:AxisY>

</telerik:ChartArea.AxisY>

<telerik:ChartArea.Legend>

<telerik:ChartLegend Visibility="Collapsed" /> </telerik:ChartArea.Legend>

</telerik:ChartArea> </telerik:ChartDefaultView.ChartArea> </telerik:ChartDefaultView> </telerik:RadChart.DefaultView>

</telerik:RadChart>

Chart

answered on 21 Jul 2011

1 answer

72 views

New Row Adition Issue

Dear Team

After adding a new row in DataGrid, if we click on any other row than both rows are shown as selected. We want that row that is clicked lately only it should be shown as selected and SelectedItems must only containt one element.

Regards
Shahnawaz Babar

GridView

answered on 21 Jul 2011

3 answers

138 views

How to get last selected column?

Hi

I want to get last selected column when I select new column.

Regards
Vijay

GridView

answered on 21 Jul 2011

0 answers

89 views

Problem select cell and change Background column

Hello,

I want to change background color to gridview column when user click in a cell. I have this code:

private void SelectColumn (string columnName)
{

  foreach (var column in GridViewNew.Columns)
                {
                    if (column == columnName)
                    {
                        ((GridViewDataColumn)column ).Background = new SolidColorBrush(Color.FromArgb(255, 165, 215, 241));

                    }
                    else
                    {
                        ((GridViewDataColumn) column ).Background = new SolidColorBrush(Colors.White);
                    }
                }
}

At first it works, but when i click over another cell, the column chages its color but column´s footer doesn´t.

GridView

asked on 21 Jul 2011

0 answers

125 views

disable drag and drop on certain row

Hi,

is it posisble to disable drag and drop only on a certain row but not entirely disable the row?

thanks

GridView

asked on 21 Jul 2011

6 answers

331 views

Copying cell content problem

Hi,

I'm using VS2008 and Telerik V2010.3.1314.35 and I have a RadGridView with Date, Time and string column and I don't know why but when I try to copy cell content of cell type other that string, I have an error...

When I copy cell content of a data cell type other than string, "e.Value" always equal null....

How I can handle any cell data type when I try to copy a cell content???

Thank's

private void SignCtxVisitsGrid_CopyingCellClipboardContent(object sender, GridViewCellClipboardEventArgs e)

{

e.Cancel =

false;

if (mSelectedCell != null && mSelectedCell.Column == e.Cell.Column)

{

try

{

System.Windows.Forms.

Clipboard.SetText(e.Value as string);

}

catch (Exception exc)

{

}

else

{

e.Cancel =

true;

}

GridView

answered on 20 Jul 2011

1 answer

155 views

[Solved] Styling the collapsed RibbonGroup Popup

How does one style the Popup that appears when the RibbonGroup is in a collapsed state?

Thanks

RibbonView and RibbonWindow

answered on 20 Jul 2011

1 answer

164 views

How to set Variants when using MVVM

Basing my implementation on your RadRibbonView MVVM example I need to be able to set the variants. But this does not appear to be possible. If it is can you please supply an example where the groups are derrived from the ViewModel.

Thanks

RibbonView and RibbonWindow

answered on 20 Jul 2011

11 answers

368 views

[Solved] DescriptionPanel

As the beta example is not that detailed, I have to ask:

Is it possible to set the initial height of the description panel and where can I switch on, that the user can change the height of the description panel?

Greets

PropertyGrid

answered on 20 Jul 2011