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Carriage returns not displaying in a details view label RSS

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Last post Apr 29, 2009 10:59 AM by Calmack

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RichardLaw

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Carriage returns not displaying in a details view label

Jan 02, 2007 02:23 PM|LINK

Hi

I’ve got a standard details view (ASP.NET 2.0 – VB). When I try retrieving text data from the database (SQL 2005), the carriage returns that were added are lost when I try to recall like so:

<asp:Label ID="diaryEventBody" runat="server" Text='<%# Bind("postEventFeedback") %>' Width="605px"></asp:Label>

I know they’re still there because if I copy and paste from the database into notepad, they aprear fine.

So what do I need to do to show them in the code above?

Many thanks
Richard
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mbanavige

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Re: Carriage returns not displaying in a details view label

Jan 02, 2007 03:05 PM|LINK
CRLF's do not render in a browser. You'd need to replace them with "<br />" during presentation.

I usually use a function to perform this kind of data "fixup".
```
Protected Function FixCrLf(value As String) As String
   If String.IsNullOrEmpty(value) Then Return String.Empty
   Return value.Replace(Environment.Newline, "<br />")
End Function
```
Now your databind would get changed to:
```
<asp:Label ID="diaryEventBody" 
           runat="server" 
           Text='<%# FixCrLf(Eval("postEventFeedback")) %>' 
           Width="605px">
</asp:Label>
```
Note: post edited to correct missing keyword "String" as mentioned in later post. (Thanks Richard)
Mike Banavige
- Edited by mbanavige on Jan 02, 2007 03:06 PM
- Edited by mbanavige on Jan 12, 2007 12:48 AM
- Edited by mbanavige on Jan 12, 2007 12:48 AM
- Edited by mbanavige on Jan 12, 2007 12:49 AM
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Darmark

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Re: Carriage returns not displaying in a details view label

Jan 02, 2007 03:07 PM|LINK

I may be wrong but i don't think Label controls reads carriage returns.

Darmark

Mark as Answer, if this reply answers your post.
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RichardLaw

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626 Posts

Re: Carriage returns not displaying in a details view label

Jan 02, 2007 09:25 PM|LINK

Hi mbanavige,

Thanks for getting back, only when I paste the VB code into my code behind for the page, it has a problem with 'IsNullOrEmpty' - Name not declared???

Any thoughts?

Thanks
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mbanavige

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Re: Carriage returns not displaying in a details view label

Jan 02, 2007 09:50 PM|LINK
IsNullOrEmpty is new to the 2.0 framework

For 1.1 you could do it like this:
```
Protected Function FixCrLf(value As String) As String
   If value Is Nothing OrElse value.Length=0 Then Return String.Empty
   Return value.Replace(Environment.Newline, "<br />")
End Function
```
Mike Banavige
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RichardLaw

Member

464 Points

626 Posts

Re: Carriage returns not displaying in a details view label

Jan 02, 2007 09:55 PM|LINK

Thank so much.

I found that for 2.0, all I needed to do is add 'string.' in front:

If String.IsNullOrEmpty(value) Then Return String.Empty

This works fine in 2.0, and to come back to Darmark's comment earlier, it also works with lables too!

Thanks all
- Edited by RichardLaw on Jan 02, 2007 09:56 PM
- Edited by RichardLaw on Jan 02, 2007 09:56 PM
- Marked as answer by RichardLaw on Jan 02, 2007 09:57 PM
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Calmack

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2 Posts

Re: Carriage returns not displaying in a details view label

Apr 29, 2009 10:59 AM|LINK

I've just had this problem until I found this post. It was fine having the html encoded into the data when I was just displaying the data. When it came round to maintaining the data in a gridview I ran into the problems of not being able to update html encoded data. I tried a few options of trying to replace the html code on text editing and replacing on update. That didn't seem to work. I didn't want to go and set validaterequest to false or do any messy coding. I then noticed that multiline textboxes could render carriage returns but labels were not. Surely there was a way at least to read the carriage returns. Then I find this post - a simple solution to the problem and without encoding the data with HTML (except for rendering).

Many Thanks