[Last Call] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

Convert C# code for concatenating files to VB

Posted on 2004-08-11
6
Medium Priority
?
233 Views
Last Modified: 2012-06-27
VB.NET newbie question.....

I am trying to convert the following C# code from a similar Q&A to VB to combine multiple files together but ended up creating a large continuously growing file.

=================================
ORIGINAL C# CODE
=================================
FileStream file1  = File.OpenRead(textBox1.Text);
FileStream file2  = File.OpenRead(textBox2.Text);
FileStream output = File.OpenWrite("output.file");

int fileByte;
while((fileByte = file1.ReadByte()) != -1)
{
     output.WriteByte((byte)fileByte);              
}

while((fileByte = file2.ReadByte()) != -1)
{
     output.WriteByte((byte)fileByte);              
}

file1.Close();
file2.Close();
output.Close();

=================================
COVERTED VB CODE
=================================
        Dim file1 As New FileStream("c:\temp\ini_files\ini_part_1.txt", FileMode.Open)
        Dim file2 As New FileStream("c:\temp\ini_files\ini_part_2.txt", FileMode.Open)
        Dim fileOutput As New FileStream("c:\temp\ini_files\ini_part_3.txt", FileMode.CreateNew)

        Dim fileByte As Integer

        While ((fileByte = file1.ReadByte()) <> -1)
            fileOutput.WriteByte((byte)fileByte)
        End While

        While ((fileByte = file2.ReadByte()) <> -1)
            fileOutput.WriteByte((byte)fileByte)
        End While

        file1.Close()
        file2.Close()
        fileOutput.Close()
=================================

I'm mainly unsure how to covert the line:

fileOutput.WriteByte((byte)fileByte)

I received "'byte' is a type, and so is not a valid expression" from Visual Studio.

Detailed code or general pointers would be most appreciated.

Thank you
0
Comment
Question by:GCaron
  • 3
  • 2
6 Comments
 
LVL 10

Accepted Solution

by:
Clif earned 600 total points
ID: 11773648
How about:

fileOutput.WriteByte(CType(fileByte, Byte))
0
 
LVL 7

Assisted Solution

by:mdamico
mdamico earned 400 total points
ID: 11773821
In case you aren't aware of these, there are a couple online sites that do C# to VB.Net conversions.  

http://www.developerfusion.com/utilities/convertcsharptovb.aspx

http://authors.aspalliance.com/aldotnet/examples/translate.aspx
0
 

Author Comment

by:GCaron
ID: 11774275
I split the points as you both answered my main question although I am still generating a continous file.

I am now using the following code after changing some lines due to the suggestions and conversions:

================================================================
        Dim file1 As FileStream = file.OpenRead("c:\temp\ini_files\ini_part_1.txt")
        Dim file2 As FileStream = file.OpenRead("c:\temp\ini_files\ini_part_2.txt")
        Dim fileOutput As FileStream = file.OpenWrite("c:\temp\ini_files\ini_part_3.txt")
        Dim fileByte As Integer

        While Not ((fileByte = file1.ReadByte()) = -1)
            fileOutput.WriteByte(CType(fileByte, Byte))
        End While

        While Not ((fileByte = file2.ReadByte()) = -1)
            fileOutput.WriteByte(CType(fileByte, Byte))
        End While

        file1.Close()
        file2.Close()
        fileOutput.Close()
================================================================

I am now receiving the error alert on the lines referencing "file.OpenRead" stating "Local variable 'file' cannot be referred to before it is declared". I know I am close but I just don't see what I am missing?

Thanks again
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 10

Expert Comment

by:Clif
ID: 11774394
Go back to using:

        Dim file1 As New FileStream("c:\temp\ini_files\ini_part_1.txt", FileMode.Open)
        Dim file2 As New FileStream("c:\temp\ini_files\ini_part_2.txt", FileMode.Open)
        Dim fileOutput As New FileStream("c:\temp\ini_files\ini_part_3.txt", FileMode.CreateNew)


0
 

Author Comment

by:GCaron
ID: 11774984
Thanks, the final code I used to achieve what I needed is as follows;

===============================================

        Dim fn1 As String = "c:\temp\ini_files\ini_part_1.txt"
        Dim fn2 As String = "c:\temp\ini_files\ini_part_2.txt"
        Dim fn3 As String = "c:\temp\ini_files\ini_part_3.txt"

        Dim f1 As New FileStream(fn1, FileMode.Open, FileAccess.Read, FileShare.Read)
        Dim f2 As New FileStream(fn2, FileMode.Open, FileAccess.Read, FileShare.Read)
        Dim f3 As New FileStream(fn3, FileMode.Create, FileAccess.Write, FileShare.Read)

        ' Create a reader that can read bytes from the FileStream.
        Dim sr1 As New BinaryReader(f1)
        ' While not at the end of the file, read lines from the file.
        While sr1.PeekChar() > -1
            Dim input As Byte = sr1.ReadByte()
            f3.WriteByte(CType(input, Byte))
        End While
        sr1.Close()

        ' Create a reader that can read bytes from the FileStream.
        Dim sr2 As New BinaryReader(f2)
        ' While not at the end of the file, read lines from the file.
        While sr2.PeekChar() > -1
            Dim input As Byte = sr2.ReadByte()
            f3.WriteByte(CType(input, Byte))
        End While
        sr2.Close()

        f1.Close()
        f2.Close()
        f3.Close()
===============================================

Thanks again
0
 
LVL 10

Expert Comment

by:Clif
ID: 11775072
Glad to be of service.  :)
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to create and use a custom WaterMark textbox class.  The custom WaterMark textbox class allows you to set the WaterMark Background Color and WaterMark text at design time.   IMAGE OF WATERMARKS STEPS Create VB …
Well, all of us have seen the multiple EXCEL.EXE's in task manager that won't die even if you call the .close, .dispose methods. Try this method to kill any excels in memory. You can copy the kill function to create a check function and replace the …
this video summaries big data hadoop online training demo (http://onlineitguru.com/big-data-hadoop-online-training-placement.html) , and covers basics in big data hadoop .
Whether it be Exchange Server Crash Issues, Dirty Shutdown Errors or Failed to mount error, Stellar Phoenix Mailbox Exchange Recovery has always got your back. With the help of its easy to understand user interface and 3 simple steps recovery proced…
Suggested Courses

830 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question