Select Text in RichTextBox inside RadGridView

[Alan]

How can I select text and highlight with a yellow background inside a radRichTextBox which is inside a radgridview from c# code behind.   Here is my XAML, but when I try to access the radRichTextBox from c# the name is not found?

<telerik:GridViewDataColumn Width="300*" Header="Paragraph" IsGroupable="False"  IsFilterable="True" Name="Paragraph" TextWrapping="Wrap" DataMemberBinding="{Binding Paragraph}">

                                   <telerik:GridViewDataColumn.CellTemplate>
                                       <DataTemplate>
                                           <Grid>
                                               <telerik:RadRichTextBox x:Name="radRichPar" FontSize="10" />
                                               <telerik:TxtDataProvider RichTextBox="{Binding ElementName=radRichPar}"  Text="{Binding Path=Paragraph, Mode=TwoWay}"/>
                                           </Grid>
                                       </DataTemplate>
                                   </telerik:GridViewDataColumn.CellTemplate>

from C# I want to access radRichPar to highlight some text programmatically..........it does not appear in intellisense......thanks

 

 

 

　

[Maya]

Hi Alan,

You cannot access an element defined in DataTemplate with its name. What you can try is to work with ChildrenOfType<T>() extension method, find the exact RichTextBox that you want  and work with that instance. Check out this blog post for a reference. 

Regards,
Maya
Telerik

[Alan]

Hi thank you for the response, I tried using the  ChildrenOfType<T>()  which is able to access the radRichTextbox in my radgridview, but it doesn't always work.  For example if I want to change the word "Parrots" to "this is a test"  the following code will not execute on the initial load of data, but will execute as soon as I move the scroll bar down to the next item on the grid?   The background color however will set properly on the load?   Is there another event I should be using, I have tried all the other "load" events with no success?

private void radGridView1_CellLoaded(object sender, CellEventArgs e)
       {
           if (e.Cell.Column.Name == "Paragraph")
           {
               var cells = radGridView1.ChildrenOfType<RadRichTextBox>().Where(c => c.Name == "radRichPar").ToList();
               //cells.ForEach(c => c.Background = Brushes.LightBlue);
               //cells.ForEach(c => c.Document.Selection.SelectAll());
               foreach (var y in cells)
               {

                   //y.Document.Selection.SelectAll();


                   y.Background = Brushes.LightBlue;
                   //y.Document.Selection.SelectAll();

                   DocumentTextSearch search = new DocumentTextSearch(y.Document);

                   foreach (var textRange in search.FindAll("Parrots"))
                   {
                       y.Document.Selection.AddSelectionStart(textRange.StartPosition); y.Document.Selection.AddSelectionEnd(textRange.EndPosition);

                       y.Insert("THIS IS  A TEST");

                   }


                   //RadGridViewCommands.c.Execute(null);

                   y.UpdateLayout();
               }

           }

 

[Maya]

Hello Alan,

Can you try handling the events of the RichTextBox directly (Loaded for example) instead of CellLoaded ?  Do you get the same behavior ?

Regards,
Maya
Telerik