我有与ASP.NET MVC视图紧密绑定的类。 对于他们的字段/属性(列),我必须使用Guid.NewGuid()生成一个唯一的名称。这样,每次打开视图时,对于与该类中特定字段/列相关联的每个控件都会有新的唯一名称。
但是,我想在生成唯一名称时跳过一些属性。因为,这些属性是隐藏的输入或占位符用于其他特定目的。什么可能是好方法?我应该为此应用自定义属性吗?在迭代字段期间,我只是跳过这些字段。
例如,班级是“
public abstract class DashboardModuleCommonSettings
{
public int ForwarderId { get; set; }
public int ClientSubsidiaryId { get; set; }
public bool IsContentUpdateable { get; set; }
public int? AfterTime { get; set; }
public string Title { get; set; }
[Not Required to be iterated for generating unique name]
public string ModuleSettingsPopupName { get; set; }
[Not Required to be iterated for generating unique name]
public int ClientId { get; set; }
[Not Required to be iterated for generating unique name]
[HiddenInput(DisplayValue = false)]
public string CurrentLayout { get; set; }
}
我怎样才能做到这一点?
答案 0 :(得分:4)
以下是如何使用它的完整示例:
[AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)]
public class NotRequiredForUniqueNameAttribute : Attribute { }
NotRequiredForUniqueNameAttribute
适用于您不想使用的属性,因此您的班级将成为:
public abstract class DashboardModuleCommonSettings
{
public int ForwarderId { get; set; }
public int ClientSubsidiaryId { get; set; }
public bool IsContentUpdateable { get; set; }
public int? AfterTime { get; set; }
public string Title { get; set; }
[NotRequiredForUniqueName]
public string ModuleSettingsPopupName { get; set; }
[NotRequiredForUniqueName]
public int ClientId { get; set; }
[NotRequiredForUniqueName]
[HiddenInput(DisplayValue = false)]
public string CurrentLayout { get; set; }
}
然后,当您想要提取没有该属性的属性时,您可以执行以下操作:
public class TestClass
{
public static string GenerateUniqueName(DashboardModuleCommonSettings dmcs)
{
var propInfos = dmcs.GetType().GetProperties(
BindingFlags.Instance | BindingFlags.Public).Where(
p => p.GetCustomAttribute<NotRequiredForUniqueNameAttribute>() == null);
string uniqueName = "";
foreach (var propInfo in propInfos)
{
//Do something with the property info
}
return uniqueName;
}
}
答案 1 :(得分:2)
这样做的一种可能方法是定义自定义属性,如果已分配属性,则忽略该属性。
public sealed class SkipPropertyAttribute: Attribute
{
}
在你的班上:
public abstract class DashboardModuleCommonSettings
{
public int ForwarderId { get; set; }
public int ClientSubsidiaryId { get; set; }
public bool IsContentUpdateable { get; set; }
public int? AfterTime { get; set; }
public string Title { get; set; }
[SkipProperty]
public string ModuleSettingsPopupName { get; set; }
[SkipProperty]
public int ClientId { get; set; }
[SkipProperty]
[HiddenInput(DisplayValue = false)]
public string CurrentLayout { get; set; }
}
您可以使用Attribute.IsDefined
方法查明属性是否已定义。
答案 2 :(得分:0)
对于后人来说,这是没有旗帜的脏版本。
public abstract class DashboardModuleCommonSettings
{
public int ForwarderId { get; set; }
public int ClientSubsidiaryId { get; set; }
public bool IsContentUpdateable { get; set; }
public int? AfterTime { get; set; }
public string Title { get; set; }
public string __marker__ { get; }
public string ModuleSettingsPopupName { get; set; }
public int ClientId { get; set; }
public string CurrentLayout { get; set; }
}
public static class Extractor
{
public static IEnumerable<PropertyInfo> VisibleProperties<T>()
{
foreach (var p in typeof(T).GetProperties())
{
if ("__marker__".Equals(p.Name, StringComparison.InvariantCultureIgnoreCase)) yield break;
yield return p;
}
}
}