TextFieldParser - reading tab delimited file

VB.NET

    Sponsored Links

    Next

  • 1. Server Controls
    Dear All Can I make a web server control that inherit from a textbox and in the same time show a button, in other words can we make inheritance and composition in the same time in the same server control. If so pls. give a sample Ahmed Hashish
  • 2. "Cannot load type library for ..."
    I have various VB.NET projects that include a reference to a COM object called CMI.DLL. This COM object is something I've created myself in VB6 as an ActiveX DLL project. Everything works fine in all projects ... I can access CMI.DLL by making calls to it, and it returns the desired data to me in response to my calls from VB.NET. However, every once in a while (ie: once a week) VB.NET gives me messages saying that the type library can't be loaded for CMI.DLL. To solve the problem I've found that I can go to a DOS prompt and type "regsvr32 cmi.dll". This seems to fix it, because then VB.NET is satisfied when I add the COM reference to CMI.DLL. Given that I've made no changes to CMI.DLL (therefore it's GUID should not have changed) I should not have to re-add the reference to it into my VB.NET project. What could be the problem here? I have a band-age solution, but prefer to have things working properly. Thanks in advance, Tom
  • 3. how do you send PJL commands to a printer?
    I thought this would have been easy... can someone clue me in? Bob
  • 4. How can I determine WHICH exception I got in my CATCH?
    I want to set up my CATCH for a specific exception, but I really don't know which one of the multitude that it is. I am getting the exception now with Catch ex as Exception but I want to be more specific. I can't find any property of the exception object that tells me WHICH one it is. TIA, Larry Woods
  • 5. detect clicked column in datagrid
    Hi, How can I detect if the cell on which the user clicked, belong to which column of my datagrid ? say if the user clicks on a cell in the second column, I would be able to detect it is the second column. Thx

TextFieldParser - reading tab delimited file

Postby al jones » Fri, 22 Sep 2006 20:34:05 GMT

I using textfieldparser to read a data file. which contains, for example:

Amond Szegi	Amondo Szegi
andr nossek	Andr Nossek
 Characte	Character

Note the vowels with diacriticals and the copyright symbol - it is dropping
these (and other similar) characters which fall outside ascii range
(apparently)

The code is simple and looks like:
        Using MyReader As New TextFieldParser(Application.StartupPath &
"\designers.txt")
            MyReader.TextFieldType = FileIO.FieldType.Delimited
            MyReader.CommentTokens = New String() {"#"}
            MyReader.Delimiters = New String() {vbTab}
            MyReader.TrimWhiteSpace = True
            Dim currentRow As String()
            intElement = 0
            While Not MyReader.EndOfData
                Try
                    currentRow = MyReader.ReadFields()
                    If Microsoft.VisualBasic.Left(currentRow(0), 7) =
"UNKNOWN" Then
                        strUnknownDesigner = currentRow(1)
                        Continue While
                    End If
                    arDesigner(intElement, 0) = currentRow(0)
                    arDesigner(intElement, 1) = currentRow(1)
                    arDesignerCounter(intElement) = 0
                    intElement += 1
                Catch ex As MalformedLineException
                    MsgBox("Designer Line " & ex.Message & "is not valid
and will be skipped.")
                End Try
            End While
        End Using

I can see any reason in the documentation for it dropping copyright or
the French and German (etc vowels with accents.

Comments or suggestions anyone??

Thanks //al

Re: TextFieldParser - reading tab delimited file

Postby Andrew Morton » Fri, 22 Sep 2006 21:02:59 GMT


> Characte Charact>r
>>
> Note the vowels with diacriticals and the copyright symbol - it >s
> dropping these (and other similar) characters which fall outsi>e
> ascii range (apparently)

It appears to be an encoding problem where the file uses (I'm guessing) 
ISO-8859-1 or maybe Windows-1252 whereas the .NET framework defaults to 
Unicode. Does a TextFieldParser have a setting for that (or have a 
.BaseClass that does)?

Or perhaps you can arrange for the file to be encoded with Unicode?

Andrew 



Re: TextFieldParser - reading tab delimited file

Postby al jones » Sat, 23 Sep 2006 02:31:52 GMT





>> AmondSzegi Amondo Szegi
>>> andrnossek AndrNosse>>
>> Characte Charact>>
>> Note the vowels with diacriticals and the copyright symbol - it >>
>> dropping these (and other similar) characters which fall outsi>>
>> ascii range (apparentl>)
> It appears to be an encoding problem where the file uses (I'm guessing> 
> ISO-8859-1 or maybe Windows-1252 whereas the .NET framework defaults t> 
> Unicode. Does a TextFieldParser have a setting for that (or have > 
> .BaseClass that does>?
> Or perhaps you can arrange for the file to be encoded with Unicod>?
> Andrew

Possibly my confusion is from the fact that I maintain these files (there
are three of them) within VS 2005 so I would have epected them to be
unicode. The characters exist within the files (the three line examples are
cut & paste from the file itself) so I don't understand why reading them
would literally eliminate the characters.

I've been over the TextFieldParser docs and see nothing that indicates that
it shouldn't take the data as presented.

Re: TextFieldParser - reading tab delimited file

Postby Jeff Glatt » Sun, 24 Sep 2006 01:42:40 GMT

Try OrchidGrid control, which can pase/import data from delimited files.






Similar Threads:

1.How to read a Tab Delimited text file in to a Flexgrid without using .Clip Method

I  need to Read Tab limited Txt file in other controls, on a form,
convert to PDF .... etc etc

I saw Your eg. in a previous post...its very good..

another problem the flexgrid displays a special charecter in the first
col  if .Clip method is used.
Further i should  be able to find the no of cols and rows in the Txt
file . to re create the file to any suitable  control .

Thank You

2.How to read a Tab Delimited text file in to a Flexgrid without using .Clip Method

How to read a Tab Delimited text file in to  a Flexgrid without using
.Clip Method

3.Problem reading Unicode from a tab-delimited file

Hi,
I have a spreadsheet that contains multiple languages. Per project
requirements I have saved this speadsheet in a tab-delimted format
using Excel 2007. I have been able to pretty much get all the
charaters correct when reading the file. I will also have to parse
Japanese from this, which I have not been able to do. I cannot read
the 3 byte characters from the file correctly for some reason. I have
an example here showing 2 characters for simplicity.

??

I get the correct value for ? but not for ? The value of ?should be
2019, instead I getting something that just displays a box in the
debugger, some value around 65k.
Note in the code snippet below, If I pass the unicodeString to the
foreach (Byte b in encodedBytes)
it works perfectly, outs the correct values for the charaters.. I have
a tab-delimted file that contains the same characters. When I open
that file and reead from it, the ?is correct, but the ?is not.
Likewise for the Japanese characters I am tring to read. Almost seems
like the issue is the file open() or the readline().
Any help and code examples would be appreciated.
Thanks
Jeff




 String unicodeString = " ???";;
            // Create a UTF-8 encoding.
            UTF8Encoding utf8 = new UTF8Encoding();
            // determine whether fileName is a file
            if (File.Exists(fileName))
            {
                     // obtain reader and file contents
                    StreamReader stream = new StreamReader(fileName);
                    // Open the file to read from.
                    using (StreamReader sr = File.OpenText(fileName))
                    {

                        while( sr.ReadLine() != null )
                        {

                            // Encode the string.
                            Byte[] encodedBytes = utf8.GetBytes
(unicodeString);
                            Console.WriteLine();
                            Console.WriteLine("Encoded bytes:");
                            foreach (Byte b in encodedBytes)
                            {
                                if (b != 9)
                                {
                                    Console.Write("[{0}]", b);
                                }
                            }

                        }

                    }

            } // end if

4.Reading tab delimited file

I have a file that is tab delimited and has no header row with column 
headings. What is the best method for reading this data into a dataset?

5.Reading Tab Delimited Data With Imbedded Double Quotes

I can't get the Microsoft Jet OLEDB 4.0 driver to read a tab delimited 
text file that has double quotes imbedded in the data. For example

Field1 | Field2 | Field3
Bob | Pant Size 34" Waist | 22

(I'm using a vertical bar here for the tab)

Field2 will contain: Pant Size 34
Field3 will contain: Waist

I have a schema.ini

[MyFile.txt]
ColNameHeader=True
Format=TabDelimited
MaxScanRows=25
CharacterSet=OEM

How do I get it to read the double quote?

Tom

6. Reading Tab Delimited Text thorugh VB6

7. Reading a delimited text file into Access 2000 mdb file with VB 6.0

8. Save a excel file as a TAB delimited text file



Return to VB.NET

 

Who is online

Users browsing this forum: No registered users and 1 guest