Vb.net open and write to text file

With the StreamWriter object, you can then write to the file. The following code demonstrates how to create a text file: Dim oFile as System. File Dim oWrite as System. StreamReader object. With the StreamReader object, you can then read the file. File Dim oRead as System. StreamWriter class for writing to the text file are Write and WriteLine. The difference between these methods is that the WriteLine method appends a newline character at the end of the line while the Write method does not.

Both of these methods are overloaded to write various data types and to write formatted text to the file. The following example demonstrates how to use the WriteLine method: oWrite. The ability to format the output has been significantly improved over previous versions of Visual Basic.

There are several overloaded methods for producing formatted text. Close The overloaded method used in these examples accepts a string to be formatted and then a parameter array of values to be used in the formatted string. The first line writes a header for our report. Each curly brace set consists of two numbers. The first number is the index of the item to be displayed in the parameter array. Notice that the parameter array is zero based. IO Imports System. Paste the code below to add a Public Function.

ReadLine If Line. StartsWith Identifier. Substring Identifier. Close Return Result : S. Paste the code below to add a Private function.

If you are running in a partial-trust context, the code might throw an exception due to insufficient privileges. For more information, see Code Access Security Basics. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Reads the next character from the input stream and advances the character position by one character.

The StreamWriter class inherits from the abstract class TextWriter that represents a writer, which can write a series of character. Clears all buffers for the current writer and causes any buffered data to be written to the underlying stream. Writes the text representation of a Boolean value to the text string or stream. Inherited from TextWriter. The above list is not exhaustive. For complete list of methods please visit Microsoft's documentation.