Writing Files in Visual Basic .NET

Here’s the translation of the Go code example to Visual Basic .NET, with explanations in Markdown format suitable for Hugo:

Writing files in Visual Basic .NET follows similar patterns to the ones we saw earlier for reading.

Imports System
Imports System.IO

Module Program
    Sub Main()
        ' To start, here's how to dump a string (or just bytes) into a file.
        Dim d1 As Byte() = System.Text.Encoding.UTF8.GetBytes("hello" & vbNewLine & "vb.net" & vbNewLine)
        File.WriteAllBytes("C:\temp\dat1", d1)

        ' For more granular writes, open a file for writing.
        Using f As StreamWriter = New StreamWriter("C:\temp\dat2")
            ' You can Write strings as you'd expect.
            Dim d2 As String = "some" & vbNewLine
            f.Write(d2)
            Console.WriteLine($"wrote {d2.Length} bytes")

            ' A WriteLine is also available.
            Dim n3 = f.WriteLine("writes")
            Console.WriteLine($"wrote {n3} bytes")

            ' StreamWriter provides buffered writing.
            Dim w As New StreamWriter(f.BaseStream)
            Dim n4 = w.WriteLine("buffered")
            Console.WriteLine($"wrote {n4} bytes")

            ' Use Flush to ensure all buffered operations have
            ' been applied to the underlying writer.
            w.Flush()
        End Using
    End Sub
End Module

Try running the file-writing code.

$ dotnet run
wrote 5 bytes
wrote 7 bytes
wrote 9 bytes

Then check the contents of the written files.

$ type C:\temp\dat1
hello
vb.net

$ type C:\temp\dat2
some
writes
buffered

Next we’ll look at applying some of the file I/O ideas we’ve just seen to the Console.In and Console.Out streams.

Time Formatting Parsing in Visual Basic .NET

Number Parsing in Visual Basic .NET

Learn X By Example

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Writing Files in Visual Basic .NET