Hi All,

I am using RadGridView with MVVM binding. I am pulling large amount of data i.e.5000 records from database so used BackgroundWorker for data processing.

In RunWorkerCompleted event  i am assigning data to ObservableCollection which is my grid's ItemsSource.

Everything works well except rowindicator, it's not visible if i bind data in worker completed event.

If i remove background worker and execute process on main thread then rowindicator displayed on grid.

Here is my sample code;

  public ObservableCollection<Assets> AssetDs { get; set; } = new ObservableCollection<Assets>();

   private voids search()
        {

          BackgroundWorker bw = new BackgroundWorker();

           bw.DoWork += (sender, e) =>
                {
                   e.Result = //DB call to fetch records 
                };

            bw.RunWorkerCompleted += (sender, e) =>
                {

                     List<Asset> result = (List<Asset>)e.Result;

                     result.ForEach(a => AssetDs.Add(a));

                 }

               bw.RunWorkerAsync();

          }

Any help would be appreciated,

Prashant

Hi All,

What is the best approach to notify required combobox on button click? I have a form with 4 tabs and each tab has some mandatory fields.

If user clicks on button i want to validate all tabs and notify user with highlighting required controls. 

Looking for possible solutions for above workflow.

Any help would be appreciated,

Regards,

Prashant

Hi guys,

I have a PivotGrid with a LocalDataSourceProvider.

The Itemsource of this LocalDataSourceProvider is a ObservableCollection.

I set these Descriptions:

            Telerik.Pivot.Core.PropertyGroupDescription pgdKWJahr = new Telerik.Pivot.Core.PropertyGroupDescription();
            pgdKWJahr.PropertyName = "KWJahr";
            pgdKWJahr.SortOrder = SortOrder.None;
            Telerik.Pivot.Core.PropertyGroupDescription pgdBearbeiter = new Telerik.Pivot.Core.PropertyGroupDescription();
            pgdBearbeiter.PropertyName = "Bearbeiter";
            PropertyAggregateDescription padAnzahl = new PropertyAggregateDescription();
            padAnzahl.PropertyName = "Anzahl";

            using (ldspAnzahlÜbergabeWerk.DeferRefresh())
            {
                ldspAnzahlÜbergabeWerk.RowGroupDescriptions.Add(pgdKWJahr);
                ldspAnzahlÜbergabeWerk.ColumnGroupDescriptions.Add(pgdBearbeiter);
                ldspAnzahlÜbergabeWerk.AggregateDescriptions.Add(padAnzahl);

            };

If the ObservableCollection now changes, I have to call a Refresh on the LocalDataProvider:

UcReklamationsAnzahlÜbergabeWerkVerlauf.ldspAnzahlÜbergabeWerk.Refresh();

This is not that great, but works if a value changes.The problem is, it not triggers anything if a new item should appear or an item is removed.

For better understanding:

My Collection is a list of how much things a user in each week completed. If someone now changes the weekrange, there should appear the new weeks in this range.

Is there any possibility to achieve this?

Greetings

Benedikt

Hi everyone

I need to give each item in a RadCombobox a very specific color..

My XAML is:

<telerik:RadComboBox x:Name="cmbToolTypeForLoad" ItemsSource="{Binding ToolTypeForCmb}" DisplayMemberPath="Description"  Margin="46,29,0,0"                          HorizontalAlignment="Left" VerticalAlignment="Top" Width="421"  Height="48"  >
                    <ComboBoxItem>
                        <Style TargetType="ComboBoxItem">
                            <Setter Property="Background" Value="{Binding Color}"/>
                        </Style>
                    </ComboBoxItem>
                </telerik:RadComboBox>

to populate my combobox I had to convert the integer color stored in SQL:

 public partial class ToolTypeForCmb
    {
        public int ToolTypeId { get; set; }
        public string Description { get; set; }
        public Brush Color { get; set; }
    }

       List<ToolType> toolTypes = toolTypeService.GetAll(MachineryCode);
       List<ToolTypeForCmb> toolTypeForCmb = new List<ToolTypeForCmb>();
       foreach (ToolType toolType in toolTypes)
       {
                ToolTypeForCmb ttfcmb = new ToolTypeForCmb();
                ttfcmb.Color = UtilityService.ConvertIntToColorBrush(toolType.Color);
                ttfcmb.Description = toolType.Description;
                ttfcmb.ToolTypeId = toolType.ToolTypeId;
                toolTypeForCmb.Add(ttfcmb);
        }

       cmbToolTypeForLoad.ItemsSource = toolTypeForCmb;

Unfortunately, it generates an error when I assign the item.

"The collection of items must be empty before you can use ItemsSource".

how can i solve?

thanks

Hi All,

I am using RadGridView in WPF application with MVVM light. In celltemplate i am able to bind relay command for button but i am getting null argument on click event.

Sample Code:

<UserControl

                      ..

                       DataContext="{Binding SearchControlVM, Source={StaticResource Locator}}"

</UserControl>

..

 <telerik:RadGridView

  ..
                        <telerik:GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <telerik:RadButton Content="View" Command="{Binding Path=DataContext.ViewCommand,
                                                    RelativeSource={RelativeSource FindAncestor,AncestorType=telerik:RadGridView}}"  />
                                ..

 </telerik:RadGridView>

How to pass argument to MVVMlight relay command. Any help would be appreciated.

Thanks,

Prashant

Hello,

I have a hierarchical grid similar to this layout https://docs.telerik.com/devtools/wpf/controls/radgridview/getting-started/building-hierarchical-grid-view

I need to be able to navigate through the parent grid and all the child grids using only a keyboard. My expected behavior is as follows:

• If all the rows are collapsed, navigating through the rows will proceed in a left to right, top to bottom pattern, including the expander button
• If focus is on an expander, pressing space bar will activate the expander and expose/hide the child grid as appropriate to the state of the expander
• If a row is expanded to expose a child grid, pressing tab on the last column of the row will shift focus to the first row, first column cell of the child grid
• While focus is in the child grid, navigating through the rows will proceed in a left to right, top to bottom pattern.
• When focus is on the last row, last column cell of a child grid, pressing tab will set focus on the first cell in the next parent row.

Right now I have the following problems

• The expander cannot be focused consistently. If I explicitly set Focusable=True on the column it only gains focus when navigating backwards with shift tab.
• The expander cannot be activated with the keyboard.
• The child grid is not keyboard accessible at all. Even if I use the mouse to explicitly set focus in the child grid I cannot keyboard navigate.

Questions:

1. Does the expander control support consistent keyboard focusability and activation?
2. Does the child grid support keyboard navigate at all?

Hi,

I would like to Export my Document to string. In my older Version 2019.1.116 the following code works fine:

In this case I can use Telerik.Windows.Documents.FormatProviders.Html.HTMLFormatProvider

HtmlFormatProvider provider = new HtmlFormatProvider() { ExportSettings = new HtmlExportSettings() };

string comment = provider.Export(radRichTextBox.Document);

After Update 2019.3.1023 it doesn't work anymore and I have to use Telerik.Windows.Documents.Flow.FormatProviders.Html.HtmlFormatProvider

Same with the exportsettings:

provider.ExportSettings.ExportFontStylesAsTags = true;
provider.ExportSettings.ExportHeadingsAsTags = true;
provider.ExportSettings.StyleRepositoryExportMode = StyleRepositoryExportMode.DontExportStyles;
provider.ExportSettings.ExportLocalOrStyleValueSource = true;
provider.ExportSettings.PropertiesToIgnore["span"].Add("font-family");
provider.ExportSettings.PropertiesToIgnore["p"].Add("margin-top");
provider.ExportSettings.PropertiesToIgnore["p"].Add("margin-bottom");

only the following settings work:

provider.ExportSettings.StylesExportMode = StylesExportMode.Inline;
provider.ExportSettings.DocumentExportLevel = DocumentExportLevel.Fragment;

What do I have to do to use the old methods again or achieve the same behaviour?

Regards,

Frank

Hello,

I have a case when the grid view must display plenty of data in a cell (in a log display). To avoid having very high rows, I have defined a template for the cell, as following:

The problem is that, when I click on the cell, the row is not selected.

Hello,

I'm trying to use a read-only syntax editor inside a GridView. The goal is to display XML data in the grid view with syntax highlighting.
As the SyntaxEditor needs code to populate it, I defined a descendant class with Language and Text dependency properties

My first try was to use the following code for the cell:

The problems are the following:

1. The display has line numbers and unnecessary scroll bars.
2. When I try to zoom in with the mouse wheel, the height doesn't change.
3. When I try to zoom out with the mouse wheel, the control seems to have an infinite height and the application freezes, using 100% of a CPU core.

To avoid problem 3, I've tried to set a maximum height for the control, using MaxHeight="150". Now, each grid view row has a height of 150, even if the content is smaller.

Hi everybody
I need to list a series of tools in a radcombobox where each color has a color associated with it.
The class of the tool is:
  public partial class ToolType
     {
         public int ToolTypeId {get; set; }
         public string Description {get; set; }
         public int Color {get; set; }
         public RecordState RecordState {get; set; }
         public string MachineryCode {get; set; }
         public int OwnerId {get; set; }

     }
where necessarily I had to transform the color to integer to be able to memorize it in SQL.

So I created a class to be able to use it in my RadCombobox to highlight on each item the color associated with my tool.

  public partial class ToolTypeForCmb
     {
         public int ToolTypeId {get; set; }
         public string Description {get; set; }
         public Brush Color {get; set; }
     }

So in my Xaml I created the RadCombobox:

<telerik:RadComboBox x:Name="cmbToolTypeForLoad" ItemsSource="{Binding ToolTypeForCmb}" DisplayMemberPath="Description"  Margin="46,29,0,0"      HorizontalAlignment="Left" VerticalAlignment="Top" Width="421"  Height="48"  >
                    <ComboBoxItem>
                        <Style TargetType="ComboBoxItem">
                            <Setter Property="Background" Value="{Binding Color}"/>
                        </Style>
                    </ComboBoxItem>
 </telerik:RadComboBox>

 List<ToolType> toolTypes = toolTypeService.GetAll(MachineryCode);
            List<ToolTypeForCmb> toolTypeForCmb = new List<ToolTypeForCmb>();
            foreach (ToolType toolType in toolTypes)
            {
                ToolTypeForCmb ttfcmb = new ToolTypeForCmb();
                ttfcmb.Color = UtilityService.ConvertIntToColorBrush(toolType.Color);
                ttfcmb.Description = toolType.Description;
                ttfcmb.ToolTypeId = toolType.ToolTypeId;
                toolTypeForCmb.Add(ttfcmb);
            }
            cmbToolTypeForLoad.ItemsSource = toolTypeForCmb;