problem with double and single quotes in string

[belgam20]

Hi,

I have a problem with double and single quotes in a string.

I have a textbox where i take a string from.
In the textbox are double quotes and single quotes quotes.
Problem is that if i return the string all the single quotes are replaced by double quotes.
How can i get it to keep the single quotes as single quotes?

Thanks in advance

[jmcilhinney]

Single quotes don't turn into double quotes on their own. Either it's not happening or your code is making it happen. We're going to need more information on the specifics of your application.

[belgam20]

this is my code i'm using.
i have a webpage with 2 textboxes and a button.

If page.Ispostback then
   dim oCodeZonder as string
   dim oCodeMet as new system.text.stringbuilder
   dim oNewLine as integer
   dim teller as integer = 1
   htmlDoc.GetElementbyId("codeVoorTry").innerHtml = page.Request("codeVoorTry")
   oCodeZonder = page.Request("codeVoorTry")
   oCodeMet.Append("Try" & vbcrlf & "errNum = " & teller.ToString & vbCrLf)
   dim uitgaan as boolean
   uitgaan = false
   While uitgaan <> true
      teller = teller+1
      oNewline = oCodeZonder.IndexOf(vbCrLf)
      if oNewLine = -1 then
         uitgaan = true
         oCodeMet.Append(oCodeZonder & vbCrLf)
         oCodeMet.Append("errNum = " & teller.ToString & vbCrLf)
         oCodeMet.Append("catch ex as exception" & vbCrLf & "throw new exception (errNum & ""-"" & ex.Message)")
         oCodeMet.Append(vbCrLf & "end try")
      else
         oCodeMet.Append(Left(oCodeZonder, oNewLine))
         oCodeMet.Append(vbCrLf & "errNum = " & teller.ToString)
         oCodeZonder = oCodeZonder.Remove(0, oNewLine+1)
      end if    
   end while
   htmlDoc.GetElementbyId("codeNaTry").innerHtml = oCodeMet.tostring
end if

if for example i put this in the textbox:

oDetail.append("<tr><td>Section name</td><td><input type='text' id='afdelingNaamEng' name='afdelingNaamEng' value='" & cfc("afdelingnaam",1).ToString & "' runat='server'></td></tr>")
oDetail.append("<tr><td>Afdeling naam</td><td><input type='text' id='afdelingNaamNed' name='afdelingNaamNed' value='" & cfc("afdelingnaam",2).ToString & "' runat='server'></td></tr>")

it gives back this

oDetail.append("<tr><td>Section name</td><td><input type="text" id="afdelingNaamEng" name="afdelingNaamEng" value=""></td></tr>")
oDetail.append("<tr><td>Afdeling naam</td><td><input type="text" id="afdelingNaamNed" name="afdelingNaamNed" value=""></td></tr>")

[jmcilhinney]

Right, so it's not your text box. The lack of any other information in your first post implies that it's your own TextBox in a WinForms application. It's important to provide the whole story.

[belgam20]

owk so finally know what the problem is. apparantly if you write a string from vb.net to an aspx page the string gets changed.
the chars having problems are <, >, ", '. what i did to prevent this was using string.replace to replace these chars to html code &quot; etc