How to: Write Object Data to an XML File (Visual Basic)
This example writes the object from a class to an XML file using the XmlSerializer class.
Example
Public Module XMLWrite
Sub Main()
WriteXML()
End Sub
Public Class Book
Public Title As String
End Class
Public Sub WriteXML()
Dim overview As New Book
overview.Title = "Serialization Overview"
Dim writer As New System.Xml.Serialization.XmlSerializer(GetType(Book))
Dim file As New System.IO.StreamWriter(
"c:\temp\SerializationOverview.xml")
writer.Serialize(file, overview)
file.Close()
End Sub
End Module
Compile the code
The class must have a public constructor without parameters.
Robust Programming
The following conditions may cause an exception:
The class being serialized does not have a public, parameterless constructor.
The file exists and is read-only (IOException).
The path is too long (PathTooLongException).
The disk is full (IOException).
.NET Framework 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. 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.
