Two way Binding not working on second hit

[Tanuj]

We are having RadRichTextBox in a user control and my user control is never disposed (means RadRichtextBox also),only visiblity of user control is toggled and we change the data inside usercontrol, every time
Now during first run, control gets intialised and data comes into radRichTextbox and goes out to binded poperty very well

Problem comes in second time, when same user contol is visible again with different set of data, radRichTextbox show same old value
I have tried clearing value, history everything and raisingPorpertyChange events explictly but nothing is working

Can you please help

[Boby]

Hello Tanuj,
Could you please provide more details on how you bind RadRichTextBox? Do you use our data providers? You can also open a support ticket and send us attached runnable sample project that reproduces the issue, so we can investigate it further.
Looking forward to your reply.

Regards,
Boby
the Telerik team

[Tanuj]

I am using RADRichTextBox without Ribbon Bar and with HTML data provider, and using it like this

<telerik1:RadRichTextBox Grid.Row="8" Grid.Column="1" Grid.ColumnSpan="3" TabIndex="2"
                                                 IsContextMenuEnabled="True" IsSelectionMiniToolBarEnabled="True" IsSpellCheckingEnabled="True"
                                                 LayoutMode="Flow"  Margin="0" Name="txtdetails" MinHeight="15" BorderThickness="0"
                                                 VerticalAlignment="Stretch" DocumentInheritsDefaultStyleSettings="False"
                                                 Padding="0" MouseOverBorderThickness="0">
                            <telerik1:RadRichTextBox.Resources>
                                <RadHTMLDataProvider:HtmlDataProvider x:Key="HTMLDataProvider" RichTextBox="{Binding ElementName=txtdetails}" Html="{Binding Details,Mode=TwoWay,ValidatesOnDataErrors=True,NotifyOnValidationError=True}"></RadHTMLDataProvider:HtmlDataProvider>
                            </telerik1:RadRichTextBox.Resources>
                        </telerik1:RadRichTextBox>

[Iva Toteva]

Hello Tanuj,

As noted in this article, the data providers have to be in the visual tree, because otherwise their context is not properly updated.

In a nutshell, the change that you have to rewrite your XAML like this:

<telerik1:RadRichTextBox Grid.Row="8" Grid.Column="1" Grid.ColumnSpan="3" TabIndex="2" IsContextMenuEnabled="True" IsSelectionMiniToolBarEnabled="True" IsSpellCheckingEnabled="True" LayoutMode="Flow" Margin="0" Name="txtdetails" MinHeight="15" BorderThickness="0" VerticalAlignment="Stretch" DocumentInheritsDefaultStyleSettings="False" Padding="0" MouseOverBorderThickness="0" />
<RadHTMLDataProvider:HtmlDataProvider x:Name="HTMLDataProvider" RichTextBox="{Binding ElementName=txtdetails}" Html="{Binding Details,Mode=TwoWay,ValidatesOnDataErrors=True,NotifyOnValidationError=True}" />

You don't have to worry about the place in the visual tree where the provider is, as it does not have a visual representation.

Regards,
Iva Toteva
the Telerik team

[Tanuj]

Thanks Iva it does solves the problem partially
Let me scratch my head for remaining part, will ping you again if required :)

-Tanuj