Questions on UI for WPF Forum

2 answers

263 views

I have the following DataTemplate:

                    <DataTemplate x:Name="DatePickerCellTemplate" x:Key="DatePickerCellTemplate">         
                        <telerik:RadDatePicker SelectedDate="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type telerik:GridViewCell}},Path=Value, Mode=TwoWay}" />         
                    </DataTemplate>         

that I set to a CellTemplate of a GridViewDataColumn dynamically. I also have the DataMemberBinding of the column set to a property ( MyDate) of some object. The MyDate property binding (TwoWay) is done at runtime in the code behind.

I am able to get the value of MyDate appear in the RadDatePicker. But it is not working the other way round, i.e. the changes are propogated back to the MyDate property.

Am i missing something ?

GridView

answered on 26 Apr 2010

1 answer

198 views

Binding aggregate function result to another element (TextBlock)

Hi,

I need to show the aggregated functions results from the footer outside of the RadGridView (binded to a TextBlock, let's say).
So, if I have:

<

telerikControls:RadGridView Name="MyGrid" CanUserFreezeColumns="False" ....

with a column like this:

<

telerikControls:GridViewDataColumn Header="MyColumn" IsFilterable="False"

DataMemberBinding="{Binding MyProperty}">

<telerikControls:GridViewDataColumn.AggregateFunctions>

<telerikData:CountFunction Caption="Count: " />

</telerikControls:GridViewDataColumn.AggregateFunctions>

</telerikControls:GridViewDataColumn> ...

and somewhere in the UI, a textblock like this:

<

TextBlock Name="MyTextBlock" Text="{Binding ElementName=MyGrid, Path=???CountResultFromFooter???}" />

How can I bind to MyTextBlock the result of the count aggregate function from MyColumn column?

Thanks!

GridView

answered on 26 Apr 2010

5 answers

527 views

GridViewImageColumn problem

I am using Telerik RadGridView in my project. I want to show image in column.

    
                            GridViewImageColumn col1 = new GridViewImageColumn();
            
                            col1.Width = 100;
            
                            col1.DataMemberBinding = new Binding("id");
            
                            col1.Header = "PhotoByConverter";
            
                            col1.DataMemberBinding.Converter = new ThumbnailConverter();
            
                            grid.Columns.Add(col1);
            
                            GridViewDataColumn col2 = new GridViewDataColumn();
            
                            col2.Width = 100;
            
                            col2.DataMemberBinding = new Binding("firstName");
            
                            col2.Header = "Person name";
            
                            grid.Columns.Add(col2);
            
                            Grid.ItemsSource=DataTable;

First column not wokrs but second works fine. I use Converter for image shown below

    
                public class ThumbnailConverter : IValueConverter
            
                {
            
                public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
            
                {
            
                                IEnumerable<thumbNail> result = from n in thumbnails
            
                                                    where n.personID == value.ToString()
            
                                                    select n;
            
                    if (result != null && result.First().thumbnail != null)
            
                    {
            
                        return result.First().thumbnail.file;
            
                    }
            
                    else
            
                    {
            
                        return null;
            
                    }
            
                }
            
                public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
            
                {
            
                    throw new Exception("The method or operation is not implemented.");
            
                }
            
               }

I found by id thumbnail of person and set it like data for GridViewImageColumn. I checked with Debuger conveter works properly. I can't undesrtand why it doesn't work. Any ideas?

I use 2009 Q3 version.

My converter returns byte[] type

GridView

answered on 26 Apr 2010

1 answer

116 views

IsSpinEnabled Mouse Scroll

Hi,

I have recently been working with the RadMaskedTextBox control and noticed it has a cool IsSpinEnabled property to enable the mouse wheel to scroll up/down the date value.

I immediatly went to enable it in the DatePicker controls I am using, but it doesn't exist. Is it named something different in the DatePicker's?
There doesn't appear to be any DatePicker documentation either for WPF or Silverlight (at least in the online version), so I couldn't check myself.

Thanks,

A Marshall

DatePicker

answered on 26 Apr 2010

3 answers

100 views

Column rendering in inherited grid.

On inheriting from "RadGridView" and overriding the "OnApplyTemplate" the only the first column is rendered.

    
            namespace WpfApplication7 
        
            { 
        
                public class  MyGrid : RadGridView 
        
                { 
        
                    public override void OnApplyTemplate() 
        
                    { 
        
                        //Custom Code. 
        
                    } 
        
                } 
        
            }

    
            <Window x:Class="WpfApplication7.Window1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:gridView="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView" 
        
                xmlns:local="clr-namespace:WpfApplication7" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                Title="Window1" Height="300" Width="300"> 
        
                <Grid> 
        
                    <local:MyGrid> 
        
                        <gridView:RadGridView.Columns> 
        
                            <gridView:GridViewColumn Header="Column1"/> 
        
                            <gridView:GridViewColumn Header="Column2"/> 
        
                            <gridView:GridViewColumn Header="Column3"/> 
        
                            <gridView:GridViewColumn Header="Column4"/> 
        
                        </gridView:RadGridView.Columns> 
        
                    </local:MyGrid> 
        
                </Grid> 
        
            </Window>

Am I doing something wrong

GridView

answered on 26 Apr 2010

3 answers

178 views

Binding dynamic xml to RadGridView

Hi,

I want to programmatically bind the xml document to RadGridView. I have xmldataprovider and I am programmatically setting the provider.document=xmldocument and the provider is the static resource of the grid.

This is not working.

Please let me know.

Thanks..

GridView

answered on 26 Apr 2010

1 answer

65 views

Telerik.Windows.Data.TableDefinition.FieldDescriptors Obsolete

Hello all,

Now that the "Telerik.Windows.Data.TableDefinition.FieldDescriptors" property is slated for destruction, what is replacing it? I need to be able to specify colunms to my GridView control and have control over thier individual settings.

- Rashad Rivera

GridView

answered on 26 Apr 2010

1 answer

156 views

Problem with a custom collection implementing INotifyCollectionChanged

hi,

I have a generic collection implementing INotifyCollectionChanged with an Add method as the following:

    
            public void Add(TEntityType item)  
        
                    {  
        
                        if (Criteria(item))  
        
                        {  
        
                            InnerList.Add(item);  
        
                            CollectionChanged(InnerList, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, item));  
        
                            if (SelectAddedItem) CurrentItem = item;  
        
                        }  
        
                    }

and it works fine with framework's ListView and DataGrid components with a binding to its ItemsSource property.

But RadGridView does not updates itself with "NotifyCollectionChangedAction.Add" but it works fine with "NotifyCollectionChangedAction.Reset". Am I doing something wrong ?

GridView

answered on 26 Apr 2010

1 answer

80 views

Chaning collor behind Tabs

Hello All,

I want to change that gray collor *behind* the tabs themselves to lets say Transparent. I'm not taking about the color behind the content or the background color inside the tab. I'm talking about the color behind the tab collection themselves. How do I do that?

In addition, how do I change the background color of the *non-active* tabs from that off-white color?

- Rashad Rivera
www.omegusprime.com

TabControl

answered on 25 Apr 2010

2 answers

169 views

3D Chart -> Export behaviour

Dear Telerik,

Thank you for the export option, but I have two questions:

1. When exporting to png/bmp, the background is not exported,
    instead, a 32bit BMP, or a transparent PNG is created.

    Is there a solution for this problem?

2. We can enter a dpi in the export option, but my problem is sometimes
    the user interface is very small, and so is the chart,
    Would be great if we can supply a Width/Height of the exported chart.

With regards,
Rob

Chart

answered on 24 Apr 2010