Code: Writing Text to a File (Visual Basic)

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This example writes a string to a text file using the WriteLine method of the StreamWriter class.


Dim file As New System.IO.StreamWriter("c:\test.txt") file.WriteLine("Here is the first line.") file.Close()Compiling the Code

This example requires:

A reference to System namespace. Robust Programming

The following conditions may cause an exception:

The file exists and is read-only (IOException Class). The disk is full (IOException Class). The pathname is too long (PathTooLongException Class). Security

This example creates a new file, if the file does not already exist. If an application needs to create a file, that application needs Create access for the folder (see Access Control). If the file already exists, the application needs only Write access, a lesser privilege. Where possible, it is more secure to create the file during deployment, and only grant Read access to a single file, rather than Create access for a folder.