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Using a VB.NET 2005 Class to Convert RichText to HTML

, 2 Nov 2006 CPOL
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A quick way to convert RichText to HTML.

A window showing a Rich Editor and the resutling HTML code


This code was written to solve the problem of having RichText data needing to be displayed in HTML, both in HTML reports and in ASP.NET web pages.

Using the code

Use of the code is exceptionally simple. Simply create a new instance of the class and then use the properties to first pass in the RichText to parse and then use the html property to get the resulting HTML. (The code file for the class is attached to this article).

''Assume you have a RichTextBox on your 
''form named rtbFoo and a button named btnBar

  Private Sub btnBar_Click(ByVal sender as object, _
          e as System.EventArgs) Handles btnBar.Click
    dim r2h as new RTFtoHTML
    r2h.rtf = rtbFoo.rtf
  End Sub


  • Initial release - 11/02/2006.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

George H. Slaterpryce III
United States United States
Developing software since 1995, starting out with Borland Turbo C++ 3 & Motorolla Assembly.
Eventually learning several different languages such as
Pascal/Delphi,Basic, Visual Basic,FoxPro, ASP, PHP, and Perl.
Currently using the .net framework for most development task.
Hobbies include underwater robotics, and electronics.
George's current language of choice is C#.

Comments and Discussions

AnswerRe: New Release Pinmemberdotnetme227-Sep-13 6:28 
Answervery nice code & good readers hint. Pinmembernasimb16-Nov-11 4:00 
Questiondisplay html format in Pinmemberepit2429-Sep-11 18:04 
QuestionFix for .NET4 and VS2010 PinmemberJohnnyasdf11-Sep-11 13:36 
The code didn't work for me in VS2010, it created individual html statements for every single character when using a very simple set of basic strings. The problem was here:
If _rtfSource.SelectionBackColor <> clrBackColor Then
This would show true for every single character. So, by changing it to:
If _rtfSource.SelectionBackColor.ToArgb <> clrBackColor.ToArgb Then
It made the statement false, thus, the html output was fine. I have no clue why VS2010,.NET4 was showing them as not equal, I even put in a messabox to show the string values and they showed equal in the messagebox's, but for some reason, the color's were different themselves. Could be a bug in VS or .NET, I'm not sure. Either way, if someone else is having the same problem, this fixed it for me, I'm going to test out using different colors, and other fonts next. I'll make another post if something else is broken. Thanks again for this, it's very solid.
AnswerRe: Fix for .NET4 and VS2010 PinmemberMember 945127426-Apr-14 3:29 
BugA little bug? Pinmember98z2813-Aug-11 9:38 
GeneralRe: A little bug? PinmemberGeorge H. Slaterpryce III15-Aug-11 17:31 
GeneralRe: A little bug? Pinmember98z2817-Aug-11 10:18 
GeneralRe: A little bug? PinmemberJohnnyasdf10-Sep-11 14:54 
QuestionConversion of text in textbox to HTML file PinmemberAdarshPatil25-Nov-10 20:35 

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