ConfigurationPropertyAttribute
namespace System.Configuration
{
[AttributeUsage(AttributeTargets.Property)]
public sealed class ConfigurationPropertyAttribute : Attribute
{
internal const string DefaultCollectionPropertyName = "";
public string Name { get; }
public object DefaultValue { get; set; } = ConfigurationElement.s_nullPropertyValue;
public ConfigurationPropertyOptions Options { get; set; }
public bool IsDefaultCollection {
get {
return (Options & ConfigurationPropertyOptions.IsDefaultCollection) != ConfigurationPropertyOptions.None;
}
set {
if (value)
Options |= ConfigurationPropertyOptions.IsDefaultCollection;
else
Options &= ~ConfigurationPropertyOptions.IsDefaultCollection;
}
}
public bool IsRequired {
get {
return (Options & ConfigurationPropertyOptions.IsRequired) != ConfigurationPropertyOptions.None;
}
set {
if (value)
Options |= ConfigurationPropertyOptions.IsRequired;
else
Options &= ~ConfigurationPropertyOptions.IsRequired;
}
}
public bool IsKey {
get {
return (Options & ConfigurationPropertyOptions.IsKey) != ConfigurationPropertyOptions.None;
}
set {
if (value)
Options |= ConfigurationPropertyOptions.IsKey;
else
Options &= ~ConfigurationPropertyOptions.IsKey;
}
}
public ConfigurationPropertyAttribute(string name)
{
Name = name;
}
}
}