FileSystemProxy.OpenTextFileReader Method
Definition
Important
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Opens a StreamReader object to read from a file.
Overloads
| OpenTextFileReader(String) |
Opens a StreamReader object to read from a file. |
| OpenTextFileReader(String, Encoding) |
Opens a StreamReader object to read from a file. |
OpenTextFileReader(String)
Opens a StreamReader object to read from a file.
public:
System::IO::StreamReader ^ OpenTextFileReader(System::String ^ file);public System.IO.StreamReader OpenTextFileReader (string file);member this.OpenTextFileReader : string -> System.IO.StreamReaderPublic Function OpenTextFileReader (file As String) As StreamReaderParameters
- file
- String
File to be read.
Returns
StreamReader object to read from the file.
Exceptions
The file name ends with a backslash (\).
The specified file cannot be found.
The user lacks necessary permissions to read from the file.
Examples
This example opens the file Testfile.txt, reads a line from it, and displays the line in a MessageBox.
Dim fileReader =
My.Computer.FileSystem.OpenTextFileReader("C:\testfile.txt")
Dim stringReader = fileReader.ReadLine()
MsgBox("The first line of the file is " & stringReader)
Remarks
Only text files can be read with a StreamReader.
The following table lists examples of tasks involving the My.Computer.FileSystem.OpenTextFileReader method.
| To | See |
|---|---|
| Open a file with a StreamReader | How to: Read Text from Files with a StreamReader |
See also
- Encoding
- StreamReader
- Objects (Visual Basic)
- How to: Read Text from Files with a StreamReader (Visual Basic)
- Reading from Files in Visual Basic
Applies to
OpenTextFileReader(String, Encoding)
Opens a StreamReader object to read from a file.
public:
System::IO::StreamReader ^ OpenTextFileReader(System::String ^ file, System::Text::Encoding ^ encoding);public System.IO.StreamReader OpenTextFileReader (string file, System.Text.Encoding encoding);member this.OpenTextFileReader : string * System.Text.Encoding -> System.IO.StreamReaderPublic Function OpenTextFileReader (file As String, encoding As Encoding) As StreamReaderParameters
- file
- String
File to be read.
- encoding
- Encoding
The encoding to use for the file contents. Default is ASCII.
Returns
StreamReader object to read from the file.
Exceptions
The file name ends with a backslash (\).
The specified file cannot be found.
The user lacks necessary permissions to read from the file.
Examples
This example opens the file Testfile.txt, reads a line from it, and displays the line in a MessageBox.
Dim fileReader =
My.Computer.FileSystem.OpenTextFileReader("C:\testfile.txt")
Dim stringReader = fileReader.ReadLine()
MsgBox("The first line of the file is " & stringReader)
Remarks
Only text files can be read with a StreamReader.
The following table lists examples of tasks involving the My.Computer.FileSystem.OpenTextFileReader method.
| To | See |
|---|---|
| Open a file with a StreamReader | How to: Read Text from Files with a StreamReader |
See also
- Encoding
- StreamReader
- Objects (Visual Basic)
- How to: Read Text from Files with a StreamReader (Visual Basic)
- Reading from Files in Visual Basic
