public static object GetPropertyDefaultValue(this IDefaultPropertyExtension Instance, PropertyInfo property)
{
// DefaultValue
if (property.GetCustomAttribute(typeof(DefaultValueAttribute)) is DefaultValueAttribute valueAttr)
{
return(valueAttr.Value);
}
// DefaultValueByMethod
if (property.GetCustomAttribute(typeof(DefaultValueByMethodAttribute)) is DefaultValueByMethodAttribute methodAttr)
{
var method = Instance.GetType().GetMethod(methodAttr.MethodName);
if (method == null)
{
throw new Exception();
}
return(method.Invoke(Instance, null));
}
// NewInstance
if (property.GetCustomAttribute(typeof(DefaultValueNewInstanceAttribute)) is DefaultValueNewInstanceAttribute)
{
return(DefaultValue.GetDefault(property.PropertyType));
}
// ValueType
if (property.PropertyType.IsValueType)
{
return(DefaultValue.GetDefault(property.PropertyType));
}
// object
return(null);
}
public static void ResetAllProperties(this IDefaultPropertyExtension Instance)
{
var properties = from property in Instance.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public)
select property;
ResetProperties(Instance, properties);
}
public static void ResetProperties(this IDefaultPropertyExtension Instance, params string[] PropertyNames)
{
var properties = from property in Instance.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public)
where PropertyNames.Contains(property.Name)
select property;
ResetProperties(Instance, properties);
}
public static void ResetProperties(this IDefaultPropertyExtension Instance, IEnumerable <PropertyInfo> properties)
{
foreach (var property in properties)
{
if (property.CanWrite)
{
var value = Instance.GetPropertyDefaultValue(property);
property.SetValue(Instance, value);
}
else if (property.CanRead && property.GetValue(Instance) is IDefaultPropertyExtension propertyInstance)
{
propertyInstance.ResetAllProperties();
}
}
}
public static object GetPropertyDefaultValue(this IDefaultPropertyExtension Instance, string PropertyName)
{
var property = Instance.GetType().GetProperty(PropertyName);
return(GetPropertyDefaultValue(Instance, property));
}
