Question

Please write a short code that opens a text file called "data.txt" and reads, writes, and keeps writing data to the file in vb.net.

Answer 1

' read/open file

Dim variable_name As String

variable_name = My.Computer.FileSystem.ReadAllText("location\data.txt")

OR

' open and read file line by line

Dim file_name, read_line As String

file_name = "location\data.txt"

If System.IO.File.Exits(file_name) = True Then

Dim objReader As New

System.IO.StreamReader(file_name)

Do While objReader.Peek <> -1

read_file = read_file & objReader.ReadLine() & vbNewLine

Loop

TextBox1.text = read_line

Else

MessageBox.Show("file is not available")

End If

' Write file

Dim file_name As String

file_name = "location\data.txt"

If System.IO.File.Exits(file_name) = True Then

Dim objWriter as New

System.IO.StreamWriter(file_name)

objWriter.Write(TextBox1.text)

obj.Writer.Close()

MessageBox.Show("write text here into file")

Else

MessageBox.Show("file is not available")

End If