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.NET Forum / Languages / VB.NET / July 2007Stringbuilder and tostring
Hi all, A very weird problem here. The toString method does not convert the whole StringBuilder elements. I find out it is because there are a series of this " " inside the stringbuilder. Any idea how to replace those characters. I try to replace them with space before I append the String into the StringBuilder.  SignatureThanks, RL "Egghead" <robertlo@NO_SHAW.CA> schrieb: > The toString method does not convert the whole StringBuilder elements. I > find out it is because there are a series of this " " inside the > stringbuilder. This should work. What are the character codes of the characters which are missing in the output? How do you determine that characters are missing? SignatureM S Herfried K. Wagner M V P <URL:http://dotnet.mvps.org/> V B <URL:http://dotnet.mvps.org/dotnet/faqs/> Hi here, I should have an example :) dim cc as new stringbuilder cc.append("abcde ede") dim st as string = cc.tostring st is only "abcde" The problem is that I do not know what is " ." I only find out the " " when I write the cc.tostring to a file. Signaturecheers, RL > "Egghead" <robertlo@NO_SHAW.CA> schrieb: >> The toString method does not convert the whole StringBuilder elements. I [quoted text clipped - 4 lines] > are missing in the output? How do you determine that characters are > missing? > Hi here, > [quoted text clipped - 25 lines] > > M V P <URL:http://dotnet.mvps.org/> > > V B <URL:http://dotnet.mvps.org/dotnet/faqs/> That is not the exact code that is causing your problem. I run that code and the string contains "abcde ede" as it should. So please show us and example that really reproduces the problem. Chris Hi here, The exact code is very similar. I believe it works in your PC is because of your newsreader filtering out the problematic characters. Dim dString as string = some select command Dim connectionString as string = connectionstring Dim oConnection As New System.Data.SqlClient.SqlConnection(connectionString) Dim oSqlDataAdapter As New System.Data.SqlClient.SqlDataAdapter(dString, oConnection) Dim dTable As New System.Data.DataTable("dTable") oConnection.Open() oSqlDataAdapter.Fill(dTable) Dim ss As New System.Text.StringBuilder ss.Append(" " & vbCrLf) ss.Append("-- Date : " & iDate.Trim & " -- " & vbCrLf) For Each dd As DataRow In fTable.Rows ss.Append(" X = : " & Convert.ToString(dd("X")).Trim & vbCrLf) Next dim xs as string = ss.tostring '<-The problem is that there are a series of funny characters in the field causing the stringbuilder or string throught it reachs the end of the string already. If my select statement does not include those problematic rows, the string will have all the characters. Signaturecheers, RL >> Hi here, >> [quoted text clipped - 32 lines] > > Chris > dim xs as string = ss.tostring '<-The problem is that there are a > series of funny characters in the field causing the stringbuilder or > string throught it reachs the end of the string already. If my select > statement does not include those problematic rows, the string will > have all the characters. Perhaps you have nulls ('\0') in your string. The information here.... http://www.yoda.arachsys.com/csharp/strings.html ...suggests that this is fine in the strings themselves, but that... "many of the Windows Forms ones (classes) may well think that the string finishes at the first null character - if your string ever appears to be truncated oddly, that could be the problem." or perhaps a display issue with the vbcrlfs that you are injecting? -- Ror Hi thanks, I thought there were some easy ways to replace any funny characters in the string. I tried the vblf, vbcr, vbcrlf, and it did nothing. BTW, how to repersent '\0' in VB.net? "\0" means \0 in VB.net Signaturecheers, RL >> dim xs as string = ss.tostring '<-The problem is that there are a >> series of funny characters in the field causing the stringbuilder or [quoted text clipped - 13 lines] > -- > Rory "Egghead" <robertlo@NO_SHAW.CA> schrieb: > I thought there were some easy ways to replace any funny characters in the > string. I tried the vblf, vbcr, vbcrlf, and it did nothing. > BTW, how to repersent '\0' in VB.net? "\0" means \0 in VB.net 'ControlChars.NullChar' or 'vbNullChar'. SignatureM S Herfried K. Wagner M V P <URL:http://dotnet.mvps.org/> V B <URL:http://dotnet.mvps.org/dotnet/faqs/> Hi thanks, It is the nullchar. After I apply the replace method, I can convert the whole string. The funny thing is that I get those funny characters as well :) Signaturecheers, RL > "Egghead" <robertlo@NO_SHAW.CA> schrieb: >> I thought there were some easy ways to replace any funny characters in >> the string. I tried the vblf, vbcr, vbcrlf, and it did nothing. >> BTW, how to repersent '\0' in VB.net? "\0" means \0 in VB.net > > 'ControlChars.NullChar' or 'vbNullChar'. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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