Not answered Initialize RichTextBox with docx file

Terry

Posted on Aug 10, 2010 (permalink)

I am trying to do something that I think should be pretty simple, but I'm not having any success.

I want to display a static docx file using a RichTextBox in read only mode in a silverlight 4 user control running on a web site. This is just to display a legal disclaimer on a site. The file exists on the web server, not on the individual's local machine. I'm using VS 2010.

I looked at the examples and I tried using the code from the Document API example for the RichTextBox control. Every time I try to create a Stream object that can be used with the DocxFormatProvider Import method, I get the error that Null exception has occurred.

Is there a sample that shows how to load a docx file from the server (not using the client OpenFileDialog function)?

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Mike

Posted on Aug 20, 2010 (permalink)

Any chance that someone has (or can) converted this project to VB?

If I download the project and run it, it works just exactly like what I want.

I've tried to convert it to VB for my needs, but am having trouble with the "webClient.OpenReadcompleted" line. I get an error message that says: "Public Event OpenReadCompleted(sender As Object, e As System.Net.OpenReadCompletedEventARgs)" is an event, and cannot be called directly. Use a 'RaiseEvent' statement to raise an event.

Basically, here's what I'm trying to accomplish:
1) I'm developing a SilverLight website for my client using Telerik controls using SilverLight's Navigation structure.
2) Client has a MSWord document that describes their Guidelines.
3) I want to upload that that document to a folder on the website and have it display in a RichTextBox on one of the pages when the user navigates to the page.
4) The guidelines can change from year-to-year, so I want to just be able to upload a new verison of the .docx file to the folder on the host whenever the document changes.

Is this project the correct approach?
If so, hopefully I can get it converted to VB and working with my project and be on my merry way!

Thanks in advance,
Mike T.

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Terry

Posted on Aug 20, 2010 (permalink)

Mike,

Here's a VB version of the project that Ivailo supplied to me....

Actually, I was trying to supply a vb version, but I can't attach a zip file. The main issue you are probably having is in the MainPage.xaml.vb file because VB handles events differenly and C#. Here is that file:

Imports

System

Imports

System.Net

Imports

System.Windows.Controls

Imports

Telerik.Windows.Documents.FormatProviders.OpenXml.Docx

Partial

Public Class MainPage

Inherits UserControl

Private WithEvents webClient As WebClient

Public Sub New()

InitializeComponent()

webClient =

New WebClient

webClient.OpenReadAsync(

New Uri("Rad-RichTextBox-for-Silverlight.docx", UriKind.Relative))

End Sub

Private Sub webClient_OpenReadCompleted(ByVal sender As Object, ByVal e As OpenReadCompletedEventArgs) Handles webClient.OpenReadCompleted

richTextBox.Document =

New DocxFormatProvider().Import(e.Result)

e.Result.Close()

End Sub

End

Class

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Terry

Posted on Aug 20, 2010 (permalink)

Mike,

Let me try that again. Pasting the code looked fine when I was submitting, but it's unreadable as it display here. I'll try with just plain text:

Imports System
Imports System.Net
Imports System.Windows.Controls
Imports Telerik.Windows.Documents.FormatProviders.OpenXml.Docx
Partial Public Class MainPage
    Inherits UserControl
    Private WithEvents webClient As WebClient
    Public Sub New()
        InitializeComponent()

        webClient = New WebClient
        webClient.OpenReadAsync(New Uri("Rad-RichTextBox-for-Silverlight.docx", UriKind.Relative))
    End Sub

    Private Sub webClient_OpenReadCompleted(ByVal sender As Object, ByVal e As OpenReadCompletedEventArgs) Handles webClient.OpenReadCompleted
        richTextBox.Document = New DocxFormatProvider().Import(e.Result)
        e.Result.Close()
    End Sub
End Class

Reply

Mike
Posted on Aug 20, 2010 (permalink)
Terry,
Thanks a ton for your reply. That did get rid of errors that I was having.

The page displays, and I put borders around the richtextbox control so that I could see it.
BUT, the richtextbox is empty, no text displays.

This is the line with the filename:
Snippet
```
webClient.OpenReadAsync(New Uri("guidelines.docx", UriKind.Relative))
```
I know that file exists. Do I need to qualify it more with some other kind of path details?

The only other difference I see is that your code "Inherits UserControl" and mine "Inherits Page" because I'm using navigation pages.
That wouldn't matter would it?

Does anything need to change in the .xaml?

Here's my declaration for the richtextbox control:
Snippet
```
<telerik:RadRichTextBox Name="radRichTextBox1" Width="700" Background="White" BorderThickness="1" BorderBrush="Black" IsReadOnly="True" />
```
Thanks again, a ton, for your help!
Reply

Terry

Posted on Aug 20, 2010 (permalink)

Mike,

Did you put the guidelines.docx file in the ClientBin folder?

Reply

Mike

Posted on Aug 20, 2010 (permalink)

Doh! At first I didn't.

But, even after putting it there, it still doesn't show.

I did notice that when I run the project from VS 2010, if the file is not in the ClientBin folder, the status bar on FireFox says "Waiting on Localhost...". If the file is there, it says: "Transferring data from Localhost...", but nothing ever shows up.

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Mike

Posted on Aug 22, 2010 (permalink)

Terry,
Thanks so much for your help. I finally figured out what my problem was.

For some reason, the "Handles webClient.OpenReadCompleted" statement was missing from the OpenReadCompleted() event.

Added that and it started working perfectly.

Thanks again for all of your help!

Mike T.

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