custom-attributes

We implement a log information to our database. I will use a Filters (IActionFilter) functionality for it. I wrote the following class: public class ActionFilter: Attribute, IActionFilter { DateTime start; public void OnActionExecuting(ActionExecutingContext context) { start = DateTime.Now; } public void OnActionExecuted(ActionExecutedContext context) { DateTime end = DateTime.Now; double processTime = end.Subtract(start).TotalMilliseconds; ... some log actions } } Then I have added the following code to the Startup.cs: services.AddMvc(options => { options.Filters.Add(typeof(ActionFilter)); })

I have a custom attribute class defined as follows. [AttributeUsage(AttributeTargets.Property, Inherited = false)] internal class EncryptedAttribute : System.Attribute { private bool _encrypted; public EncryptedAttribute(bool encrypted) { _encrypted = encrypted; } public virtual bool Encrypted { get { return _encrypted; } } } I applied the above attribute to another class as follows. public class KeyVaultConfiguration { [Encrypted(true)] public string AuthClientId { get; set; } = ""; public string AuthClientCertThumbprint { get; set; } = ""; } How do I get the value of Encrypted=True on

I noticed today that some new properties had appeared in my intellisense on the System.Type object for my .NET 4.5 projects. Among these was one called CustomAttributes . I was intrigued by this since I previously had understood that GetCustomAttributes was one of the most expensive reflection calls ( DynamicInvoke and the like aside, of course). As I understand it, every call to GetCustomAttributes results in calling the constructors for the attributes (and thus a memory allocation). I've often resorted to caching the custom attributes separately to avoid performance bottlenecks when

I wrote a somewhat generic deserialization mechanism that allows me to construct objects from a binary file format used by a C++ application. To keep things clean and easy to change, I made a Field class that extends Attribute , is constructed with Field(int offset, string type, int length, int padding) and is applied to the class attributes I wish to deserialize. This is how it looks like : [Field(0x04, "int")] public int ID = 0; [Field(0x08, "string", 0x48)] public string Name = "0"; [Field(0x6C, "byte", 3)] public byte[] Color = { 0, 0, 0 }; [Field(0x70, "int")] public int

I have two custom attributes in my asp.net mvc(C#) application. [CustAttribute1()] [CustAttribute2()] When I use those attributes to my actions, which will get executed first? [CustAttribute1()] [CustAttribute2()] public ActionResult Index() { Can I use more than one custom attributes for my actions? If so, in the above Action, which custom attribute will execute first? Set the Order property. [CustAttribute1(Order=2)] [CustAttribute2(Order=1)] public ActionResult Index() { return View(); } 来源： https://stackoverflow.com/questions/1770550/execution-priority-in-custom-attributes-in-asp-net-mvc

I am delving into custom validation attributes and am curious to know how others structure the projects. Where do you typically store custom attributes? My first thought was to simply create a new folder and be done with it. Any suggestions? I use 2 different approaches. Set up a common Class Library to store common validation that will be used on many MVC applications. Then reference this library from your MVC application. You can use http://dataannotationsextensions.org/ to view the source code on how to setup this project. Place them in folders as suggested by Darin. This folder would be

In the DB i have Role and User entities with one to many relationship. What i am trying to do is to build custom authorization filter. All the tutorials that i have seen are using default ASP.NET membership. All i know is that i need to inherit AuthorizationAttribute but do not know which methods do i need to override and how to implement them. public class UserAuth : AuthorizeAttribute { } In the DB : Role public class Role { [Key] public int RoleID { get; set; } [Required] public int RolenameValue { get; set; } [MaxLength(100)] public string Description { get; set; } // // // // // public

I have a helper class that uses a TypeBuilder to construct a dynamic type. It is used as follows : var tbh = new TypeBuilderHelper("MyType"); tbh.AddProperty<float>("Number", 0.0f); tbh.AddProperty<string>("String", "defaultStringValue"); tbh.Close(); var i1 = tbh.CreateInstance(); var i2 = tbh.CreateInstance(); I now want to add support for property attributes (existing attribute types, not dynamically generated types), along the lines of : public class TypeBuilderHelper { public void AddProperty<T>(string name, T defaultValue, params Attribute[] attributes) { // ... } } public class