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;

Is possible add a custom sort for children? Or sort just parents?

It happens only on some of our client's computers even for the simplest demo. I can't repeat it in development  environment.

The OS is Windows 7 x64, .net framework version is 4.7.2.

The operation triggers the error is just dropping down and select items. 

I think the problem happens when rendering the selectionbox.