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How do I define custom web.config sections with potential child elements and attributes for the properties?

namespace Ani {

    public sealed class MailCenterConfiguration : ConfigurationSection
    {
        [ConfigurationProperty("userDiskSpace", IsRequired = true)]
        [IntegerValidator(MinValue = 0, MaxValue = 1000000)]
        public int UserDiskSpace
        {
            get { return (int)base["userDiskSpace"]; }
            set { base["userDiskSpace"] = value; }
        }
    }
}
<configSections>
    <!-- Mailcenter configuration file -->
    <section name="mailCenter" type="Ani.MailCenterConfiguration" requirePermission="false"/>
</configSections>
...
<mailCenter userDiskSpace="25000">
    <mail
     host="my.hostname.com"
     port="366" />
</mailCenter>
public sealed class MailCenterConfiguration : ConfigurationSection
{
    [ConfigurationProperty("mail", IsRequired=true)]
    public MailElement Mail
    {
        get { return (MailElement)base["mail"]; }
        set { base["mail"] = value; }
    }

    public class MailElement : ConfigurationElement
    {
        [ConfigurationProperty("host", IsRequired = true)]
        public string Host
        {
            get { return (string)base["host"]; }
            set { base["host"] = value; }
        }

        [ConfigurationProperty("port", IsRequired = true)]
        [IntegerValidator(MinValue = 0, MaxValue = 65535)]
        public int Port
        {
            get { return (int)base["port"]; }
            set { base["port"] = value; }
        }
private static MailCenterConfiguration instance = null;
public static MailCenterConfiguration Instance
{
    get
    {
        if (instance == null)
        {
            instance = (MailCenterConfiguration)WebConfigurationManager.GetSection("mailCenter");
        }

        return instance;
    }
}
public void SendMail()
{
    MailCenterConfiguration conf = MailCenterConfiguration.Instance;
    SmtpClient smtpClient = new SmtpClient(conf.Mail.Host, conf.Mail.Port);
}
protected void Application_ Start(object sender, EventArgs e)
{
    MailCenterConfiguration.Instance;
}

Tags: asp.net

Source: By Dave Anderson as answer to the question

This code snippet was collected from stackoverflow, and is licensed under CC BY-SA 4.0


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