hello,

I have the following XML file (config.xml):

********
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<dbSettings>
<dbhost>SQLSERVER</dbhost>
<dbuser>user</dbuser>
<dbpass>pass</dbpass>
<dbname>Northwind</dbname>
</dbSettings>
</configuration>

********
Can anyone send me the code for reading and modifying that values please,

thanks in advance,
Adriano

[quoted text, click to view]

Yes, here's what the code you requested would look like using an
XmlSerializer.

- - - CustomConfig.cs
using System;
using System.IO;
using System.Text;
using System.Xml;
using System.Xml.Serialization;


internal class DbSettings
{
private string dbhost;
private string dbuser;
private string dbpass;
private string dbname;

public DbSettings()
{
this.dbhost = "";
this.dbuser = "";
this.dbpass = "";
this.dbname = "";
}

[XmlElement( "dbhost")]
public string Host
{
get { return this.dbhost; }
set { this.dbhost = value; }
}

[XmlElement( "dbuser")]
public string User
{
get { return this.dbuser; }
set { this.dbuser = value; }
}

[XmlElement( "dbpass")]
public string Password
{
get { return this.dbpass; }
set { this.dbpass = value; }
}

[XmlElement( "dbname")]
public string Name
{
get { return this.dbname; }
set { this.dbname = value; }
}
}


[XmlRoot( "configuration")]
public class CustomConfig
{
private DbSettings dbSettings;

public CustomConfig( )
{
this.dbSettings = new DbSettings( );
}

[XmlElement( "dbSettings")]
public DbSettings DbSettings
{
get { return this.dbSettings; }
set { this.dbSettings = value; }
}

public static CustomConfig Load( )
{
XmlSerializer serializer = new XmlSerializer( typeof( CustomConfig));
XmlSerializerNamespaces serialNs = new XmlSerializerNamespaces();
serialNs.Add( "", "");

XmlTextReader reader = new XmlTextReader( "config.xml");
CustomConfig cfig = serializer.Deserialize( reader) as CustomConfig;
reader.Close();

return cfig;
}

public static void Save( CustomConfig cfig)
{
StreamWriter writer = new StreamWriter( "config.xml", false, Encoding.UTF8);
serializer.Serialize( writer, cfig, serialNs);
writer.Flush( );
writer.Close( );
}
}


public class TestCustomConfig
{
public static void Main( )
{
CustomConfig config = CustomConfig.Load( );

if ( config != null )
{
Console.WriteLine( config.DbSettings.Host);
Console.WriteLine( config.DbSettings.User);
Console.WriteLine( config.DbSettings.Password);
Console.WriteLine( config.DbSettings.Name);
}

// Change Database Name.
config.DbSettings.Name = "pubs";

CustomConfig.Save( config);
}
}
- - -

Note that this places the password in plain-text.

For purposes of a config file, I'd really encourage you to look into
the System.Configuration namespace, which handles a lot of this
automatically as long as your config file is named

applicationname.exe.config

or,

web.config


Derek Harmon