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

Example

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.