I have some dynamic querystring parameters that I would like to interact with as an IDictionary<string,string>. How do I do this?
I tried
public IHttpActionResult Get(FromUri]IDictionary<string, string> selections)
as suggested but for a query of
/api/MyController?selections%5Bsub-category%5D=kellogs
it always gives me a dictionary with 0 items.
I don't even need the selections prefix. I literally just need all querystring parameters as a dictionary. How do I do this and why won't the above work?
You can use the GetQueryNameValuePairs extension method on the HttpRequestMessage to get the parsed query string as a collection of key-value pairs.
public IHttpActionResult Get()
{
var queryString = this.Request.GetQueryNameValuePairs();
}
And you can create some further extension methods to make it eaiser to work with as described here: WebAPI: Getting Headers, QueryString and Cookie Values
/// <summary>
/// Extends the HttpRequestMessage collection
/// </summary>
public static class HttpRequestMessageExtensions
{
/// <summary>
/// Returns a dictionary of QueryStrings that's easier to work with
/// than GetQueryNameValuePairs KevValuePairs collection.
///
/// If you need to pull a few single values use GetQueryString instead.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public static Dictionary<string, string> GetQueryStrings(
this HttpRequestMessage request)
{
return request.GetQueryNameValuePairs()
.ToDictionary(kv => kv.Key, kv=> kv.Value,
StringComparer.OrdinalIgnoreCase);
}
}
In addition to what nemesv mentioned, you can also create a custom parameter binding for IDictionary<string,string> similar to the approach I show here:
How would I create a model binder to bind an int array?
We can use HttpUtility.ParseQueryString(<string>) method from System.Web namespace. This method will parse the query string given as input and return it as an NameValueCollection.
Related
How to detach entity object from context?
Unable to get access to the context in my application service
How to clone a row using asp.net boilerplate?
e.g. I have row say row1 with primary key Id
I want to insert same row contents with new Id
You can access DbContext in repository (should not use DbContext in application service). Create custom repository, define some methods that you want to use in application service layer, see document here
To clone object, you can create copy method in the entity class or use AutoMapper.
1) You can inject IDbContextProvider<TDbContext> into your class and use it's GetDbContext method to get the DbContext.
2) If you have a DTO class which you use for saving your entity, then for cloning an entity, you can follow below steps:
Get original entity from database
Map it to your entity save dto (I assume it does not contain Id field)
Then map your dto to entity
Save your entity.
Thanks.
You can use newtonsoft serialization:
/// <summary>
/// Perform a deep Copy of the object, using Json as a serialisation method. NOTE: Private members are not cloned using this method.
/// </summary>
/// <typeparam name="T">The type of object being copied.</typeparam>
/// <param name="source">The object instance to copy.</param>
/// <returns>The copied object.</returns>
public static T CloneJson<T>(this T source)
{
// Don't serialize a null object, simply return the default for that object
if (Object.ReferenceEquals(source, null))
{
return default(T);
}
// initialize inner objects individually
// for example in default constructor some list property initialized with some values,
// but in 'source' these items are cleaned -
// without ObjectCreationHandling.Replace default constructor values will be added to result
var deserializeSettings = new JsonSerializerSettings {ObjectCreationHandling = ObjectCreationHandling.Replace};
return JsonConvert.DeserializeObject<T>(JsonConvert.SerializeObject(source), deserializeSettings);
}
Or you can use ObjectCopier
using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
/// <summary>
/// Reference Article http://www.codeproject.com/KB/tips/SerializedObjectCloner.aspx
/// Provides a method for performing a deep copy of an object.
/// Binary Serialization is used to perform the copy.
/// </summary>
public static class ObjectCopier
{
/// <summary>
/// Perform a deep Copy of the object.
/// </summary>
/// <typeparam name="T">The type of object being copied.</typeparam>
/// <param name="source">The object instance to copy.</param>
/// <returns>The copied object.</returns>
public static T Clone<T>(T source)
{
if (!typeof(T).IsSerializable)
{
throw new ArgumentException("The type must be serializable.", "source");
}
// Don't serialize a null object, simply return the default for that object
if (Object.ReferenceEquals(source, null))
{
return default(T);
}
IFormatter formatter = new BinaryFormatter();
Stream stream = new MemoryStream();
using (stream)
{
formatter.Serialize(stream, source);
stream.Seek(0, SeekOrigin.Begin);
return (T)formatter.Deserialize(stream);
}
}
}
I've added the following extension method
/// <summary>
/// Provides a statically typed interface for db includes
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="set">The set.</param>
/// <param name="includes">The includes.</param>
/// <returns>DbSet<T>.</returns>
public static DbSet<T> Include<T>(this DbSet<T> set, params Expression<Func<T, object>>[] includes) where T : class
{
if (includes != null)
{
foreach (var expression in includes)
{
set.Include(expression);
}
}
return set;
}
This is based on the repository code I found here
https://github.com/carbonrobot/FullStackEF/tree/master/src
However, when I utilise this with the following
public ServiceResponse<Town> Get(int id)
{
Func<Patient> func = delegate
{
using (var context = _contextFactory())
{
return context.Get<Town>(id, x => x.County);
}
};
return this.Execute(func);
}
Where the town class contains a County entity.
I am getting a infinite loop as its calling the extension method rather than the base include?
Any ideas what I am doing wrong here?
There a several mistakes in that method.
The DbExtensions.Include method has the following signature:
public static IQueryable<T> Include<T, TProperty>(
this IQueryable<T> source,
Expression<Func<T, TProperty>> path
)
where T : class
As you can see, it receives IQueryable<T> and returns another IQueryable<T> which has to be assigned to a variable and returned instead of the original in order to has effect, which the code is not doing.
Also, since the method calls Include on the set variable of type DbSet<T> which is more concrete than the IQueryable<T>, and the argument matches the signature of the custom method, the compiler simply calls the same method, hence the StackOverflowException.
With that being said, here is the correct custom method signature and implementation:
public static IQueryable<T> Include<T>(this DbSet<T> set, params Expression<Func<T, object>>[] includes)
where T : class
{
var result = set.AsQueryable();
if (includes != null)
{
foreach (var expression in includes)
{
result = result.Include(expression);
}
}
return result;
}
It appears that the RemoteAttribute validator introduced in ASP.NET MVC 3 does not validate on the server-side, only via JavaScript. If you turn off JS in your browser, you will find that on model binding, the validation controller action (that you specified when decorating a model property with the RemoteAttribute) will not be hit. In fact, if you inspect the source code for the RemoteAttribute, you will find the IsValid methods just returns true in all cases.
This seems to be quite an omission - I think most people would assume that the RemoteAttribute would work like all the other built-in validators and validate on both client-side and server-side. Instead, you must manually call your remote validation logic in your controller action.
Are people aware of this and has anyone tried to address it?
I have subclassed RemoteAttribute and overridden the IsValid method where I have access to RouteData, RouteName and Routes as well as a GetUrl method that returns the action URL. I was thinking about using reflection to call the action and get the result so I can see if it is valid or not, but are there any built-in methods that I can use without resorting to reflection?
Maybe its not the best code. If you have some recommendations please let me know.
Developed #MVC4
Model property with custom attribute
[CustomRemote("ValidateIP", "Validation", ErrorMessage = "Input is not a valid IP")]
Subclassed RemoteAttribute
/// <summary>
/// Custom Remote Attribute for Client an Server validation.
/// </summary>
public class CustomRemoteAttribute : RemoteAttribute
{
/// <summary>
/// List of all Controllers on MVC Application
/// </summary>
/// <returns></returns>
private static List<Type> GetControllerList()
{
return Assembly.GetCallingAssembly().GetTypes().Where(type => type.IsSubclassOf(typeof(Controller))).ToList();
}
/// <summary>
/// Constructor of base class.
/// </summary>
protected CustomRemoteAttribute()
{
}
/// <summary>
/// Constructor of base class.
/// </summary>
public CustomRemoteAttribute(string routeName)
: base(routeName)
{
}
/// <summary>
/// Constructor of base class.
/// </summary>
public CustomRemoteAttribute(string action, string controller)
: base(action, controller)
{
}
/// <summary>
/// Constructor of base class.
/// </summary>
public CustomRemoteAttribute(string action, string controller, string areaName)
: base(action, controller, areaName)
{
}
/// <summary>
/// Overridden IsValid function
/// </summary>
/// <param name="value"></param>
/// <param name="validationContext"></param>
/// <returns></returns>
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
// Find the controller passed in constructor
var controller = GetControllerList().FirstOrDefault(x => x.Name == string.Format("{0}Controller", this.RouteData["controller"]));
if (controller == null)
{
// Default behavior of IsValid when no controller is found.
return ValidationResult.Success;
}
// Find the Method passed in constructor
var mi = controller.GetMethod(this.RouteData["action"].ToString());
if (mi == null)
{
// Default behavior of IsValid when action not found
return ValidationResult.Success;
}
// Create instance of the controller to be able to call non static validation method
var instance = Activator.CreateInstance(controller);
// invoke the method on the controller with value
var result = (JsonResult)mi.Invoke(instance, new object[] { value });
// Return success or the error message string from CustomRemoteAttribute
return (bool) result.Data ? ValidationResult.Success : new ValidationResult(base.ErrorMessageString);
}
}
Validation Controller Code
/// <summary>
/// Controller for Client and Server validation
/// <remarks>disable OutputCache</remarks>
/// </summary>
[OutputCache(Location = OutputCacheLocation.None, NoStore = true)]
public class ValidationController : Controller
{
/// <summary>
/// !!!!!!!!!!!!!!!!!! Needed for instance creation in custom attribute !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
/// </summary>
public ValidationController()
{
}
/// <summary>
/// IP regex pattern of my choice
/// </summary>
const string IpPattern = #"^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$";
/// <summary>
/// MAC regex pattern of my choice
/// </summary>
const string MacPattern = "^([0-9A-F]{2}[:-]){5}([0-9A-F]{2})$";
/// <summary>
/// Validate IP
/// </summary>
/// <param name="ip">IP param is only submited on Serverside validation!!!</param>
/// <returns>Validation Result</returns>
public JsonResult ValidateIP(string ip)
{
// Check if ip and httpcontext is null to dodge NullReferenceException on Server side validation
if (string.IsNullOrEmpty(ip) && HttpContext == null)
{
return Json(false, JsonRequestBehavior.AllowGet);
}
/* Use IP on Serverside validation
* Use Querystring Param 0 to get IP from Client side vaildation without the need for the correct Id of input control */
string checkip = string.IsNullOrEmpty(ip) ? HttpContext.Request.QueryString[0] : ip;
if (string.IsNullOrEmpty(checkip))
{
return new JsonResult { Data = true, JsonRequestBehavior = JsonRequestBehavior.AllowGet };
}
return new JsonResult
{
Data = Regex.IsMatch(checkip, IpPattern),
JsonRequestBehavior = JsonRequestBehavior.AllowGet
};
}
}
This is the intended behavior of remote validation. There is no way to know what the implementation of IsValid would be so it simply returns true. If you want server side validation for the RemoteAttribute you should override IsValid just like you have done.
Remote validator often with an additional field. Here's the implementation for this case.
/// <summary>
/// Remote Attribute for Client an Server validation.
/// </summary>
public class RemoteWithServerSideAttribute : RemoteAttribute
{
/// <summary>
/// List of all Controllers on MVC Application
/// </summary>
/// <returns></returns>
private static IEnumerable<Type> GetControllerList()
{
return Assembly.GetCallingAssembly().GetTypes().Where( type => type.IsSubclassOf( typeof( Controller ) ) ).ToList();
}
/// <summary>
/// Constructor of base class.
/// </summary>
protected RemoteWithServerSideAttribute() {}
/// <summary>
/// Constructor of base class.
/// </summary>
public RemoteWithServerSideAttribute( string routeName ) : base( routeName ) {}
/// <summary>
/// Constructor of base class.
/// </summary>
public RemoteWithServerSideAttribute( string action, string controller ) : base( action, controller ){}
/// <summary>
/// Constructor of base class.
/// </summary>
public RemoteWithServerSideAttribute( string action, string controller, string areaName ) : base( action, controller, areaName ) {}
/// <summary>
/// Overridden IsValid function
/// </summary>
/// <param name="value"></param>
/// <param name="validationContext"></param>
/// <returns></returns>
protected override ValidationResult IsValid( object value, ValidationContext validationContext )
{
// Find the controller passed in constructor
var controller = GetControllerList().FirstOrDefault( x => x.Name == string.Format( "{0}Controller", this.RouteData["controller"] ) );
if ( controller == null )
{
// Default behavior of IsValid when no controller is found.
return ValidationResult.Success;
}
// Find the Method passed in constructor
var mi = controller.GetMethod( this.RouteData["action"].ToString() );
if ( mi == null )
{
// Default behavior of IsValid when action not found
return ValidationResult.Success;
}
// Create instance of the controller to be able to call non static validation method
var instance = Activator.CreateInstance( controller );
// invoke the method on the controller with value and "AdditionalFields"
JsonResult result;
if ( !string.IsNullOrWhiteSpace( AdditionalFields ) )
{
var additionalField = validationContext.ObjectType.GetProperty( AdditionalFields )
.GetValue( validationContext.ObjectInstance );
result = (JsonResult) mi.Invoke( instance, new [] { value, additionalField } );
}
else
result = (JsonResult)mi.Invoke( instance, new [] { value } );
// Return success or the error message string from CustomRemoteAttribute
string errorMessaqe = result.Data as string;
if (errorMessaqe == null)
{
bool isValid;
try
{
isValid = (bool) result.Data;
}
catch (Exception)
{
isValid = false;
}
return isValid ? ValidationResult.Success : new ValidationResult( base.ErrorMessageString );
}
else
return new ValidationResult( errorMessaqe );
}
}
As has been answered before, this is by design.
I have just stumbled upon a nice article on CodeProject - http://www.codeproject.com/Articles/361113/Extending-the-MVC-RemoteAttribute-to-validate-ser
The problem is that Remove Attribute requires Javascript validation, it does not work out of the box on the server-side... in other words, if you enable javascript validation, it will work and show the error(s), if you disable javascript and go to server validation, it will simply not show any errors on the modelstate, this is not a bug, its a feature hahaha... well, that's the way it was built (on ms)...
https://docs.devexpress.com/AspNet/17294/aspnet-mvc-extensions/data-editors-extensions/common-concepts/validation/remote-validation#requirements
If you need a remote validation attribute that works client and server side, you must create your own class inheriting RemoteAttribute, then you must deploy your own validation, check the following video: https://www.youtube.com/watch?v=qopOqppDwc4&t=110s
The video is almost correct, I did post a comment for controllers that use services via injection like dbcontext, etc... I did it and it works...
Is it true that it is possible to load View from anywhere without
implementation of custom VirtualPathProvider in MVC 3.0?
If it is true how to do it?
Basically it is not a problem to implement custom VirtualPathProvider which would load the
View from anywhere but my implementation working only in MVC 2.0 and not working wih MVC 3.0, fore some reason method GetFile newer called for not existed views in MVC 3.0 and in that case I am getting "Server Error in '/' Application."
I followed the same code for my custom VirtualPathProvider from here: http://buildstarted.com/2010/09/28/mvc-3-razor-view-engine-without-a-controller/
UPDATE 1
OK i did fix my problem with my custom VirtualPathProvider after i put registration of my custom VirtualPathProvider provider first line in the Application_Start()
protected void Application_Start()
{
//Should be first line before routes and areas registration.
HostingEnvironment.RegisterVirtualPathProvider(new MyVirtualPathProvider());
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
}
When registration of custom VirtualPathProvider in Global.asax.cs folowing after AreaRegistration.RegisterAllAreas(); or RegisterRoutes(RouteTable.Routes); method method override VirtualFile GetFile(string virtualPath) wont work for "virtual Views".
UPDATE 2
does it means that the classes RazorView and RazorViewEngineRender is the answer?
UPDATE 3
If i have string representation of my razor view which does not exists in the file system (e.g i store razor views in database) how may i render it using this kind of approach http://buildstarted.com/2010/09/28/mvc-3-razor-view-engine-without-a-controller/
For example string representation of my View looks like this:
"#{
ViewBag.Title = ""About Us"";
}
<h2>About</h2>
<p>
Put content here.
</p>"
UPDATE 4
Now i see, to be able to use #Html.<something> custom TemplateBase should be implemented.
The sample of implementation of HtmlTemplateBase<T> could be fount here http://www.fidelitydesign.net/?p=239, but it won't work with RazorEngine v2, i am successfully getting template compiled, then after assembly loaded method public override void Execute() won't be executed i am getting an error: The method or operation is not implemented (stacktrace: http://tinypic.com/r/dcow4/7)
To make “public override T Model” happened i did change declaration of “public TModel Model” to “public virtual TModel Model” in “public abstract class TemplateBase : TemplateBase, ITemplate”. May be there is some another changes should be done? Or something in HtmlTemplateBase<T> should be done another way?
Don't be confused by Ben's (#BuildStarted) sample code in his article. He is detailing how to use an early version of the Razor ViewEngine to render templates without using a controller action. The intention was to be able to render templates in a generic fashion, rather than as specific page views. (This is what has evolved into our RazorEngine templating framework # http://razorengine.codeplex.com).
The VirtualPathProvider is still a core part of ASP.NET. There appears to be a general confusion about MVC 3's DependencyResolver being a replacement of a VirtualPathProvider but this is not the case, you still require a provider to be able to access content on a virtual path (which incidentally, all paths in ASP.NET are virtual).
Reverting my original answer, you should be able to achieve what you want purely through subclassing the RazorViewEngine and using that to create your views.
Have a look at this topic: http://coderjournal.com/2009/05/creating-your-first-mvc-viewengine/
No, loading a view from the database is not supported by default. You need to write your own VirtualPathProvider.
Note that Ben's blog post does not actually address directly the problem that you are trying to solve. The following blog post looks a lot closer to what you want: http://rebuildall.umbraworks.net/2009/11/17/ASP_NET_MVC_and_virtual_views. Note that it does not matter if you are trying to store razor or aspx views in the database. Virtual path providers in Asp.Net are simply about mapping a path to a stream of bytes that are the contents of the file represented by that path.
I ran into a similar issue implementing a VirtualPathProvider for embedded resource views. The solution was to implement GetFolder as well as GetFile. The view engine doesn't just call GetFile when you request that view. On the first request it looks through the views folder to find all available views. If that call doesn't include your database views in the list, they won't be found when you try to load them.
Everyone is correct. My post was not how to load Razor as a replacement but as a way to call razor without using MVC. Now...what you want is most likely related to my post here How to Download Razor View Engine Where I show how to create your own ViewEngine to host a razor page. It uses the same engine #Matthew Abbott and I use for the RazorEngine - which you can get from CodePlex. Unfortunately it's not complete but it should give you an idea on how to do it. (I'll post it here too)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Hosting;
using System.IO;
using System.Text.RegularExpressions;
using System.Xml.Linq;
namespace RazorViewEngine {
/// <summary>
/// ViewEngine for the RazorView. Provides basic file handling to load views.
/// </summary>
public class RazorViewEngine : IViewEngine {
string[] SearchLocations { get; set; }
Tuple<string, string, RazorView> Cache { get; set; }
VirtualPathProvider VirtualPathProvider { get; set; }
public RazorViewEngine() {
//{1} == Controller name
//{0} == View name
SearchLocations = new string[] {
"~/Views/{1}/{0}.cshtml",
"~/Views/Shared/{0}.cshtml",
};
VirtualPathProvider = HostingEnvironment.VirtualPathProvider;
}
#region IViewEngine Members
public ViewEngineResult FindPartialView(ControllerContext controllerContext, string partialViewName, bool useCache) {
return CreateView(controllerContext, partialViewName, null, null, useCache);
}
public ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache) {
return CreateView(controllerContext, viewName, masterName, GetLayoutPath(controllerContext), useCache);
}
/// <summary>
/// Meat of the FindView methods.
/// </summary>
/// <param name="controllerContext">The current controller context for this request.</param>
/// <param name="viewName">The requested view name. </param>
/// <param name="masterName">The master page view name (currently unused)</param>
/// <param name="layoutPath">The layout path location (Replaces the masterpage in other view engines)</param>
/// <param name="useCache">Cache the viewpage?</param>
/// <remarks>The layout path is currently hardcoded to "Layout" and will look in the SearchLocations for that path</remarks>
/// <returns>Returns a ViewEngineResult with the requested view</returns>
public ViewEngineResult CreateView(ControllerContext controllerContext, string viewName, string masterName, string layoutPath, bool useCache) {
//grab the current controller from the route data
string controllerName = controllerContext.RouteData.GetRequiredString("controller");
//for proper error handling we need to return a list of locations we attempted to search for the view
string[] SearchedLocations;
//get the actual path of the view - returns null if none is found
string viewPath = GetViewPath(viewName, controllerName, out SearchedLocations);
if (viewPath != null) {
RazorView view = new RazorView(this, controllerContext, viewPath, layoutPath);
return new ViewEngineResult(view, this);
}
//we couldn't find the view - return an array of all locations we've looked in
return new ViewEngineResult(SearchedLocations);
}
/// <summary>
/// Look for the view in the current file system
/// </summary>
/// <param name="viewName">The name of the View you're looking for</param>
/// <param name="controllerName">Current controller name</param>
/// <param name="SearchedLocations">out a list of locations searched</param>
/// <returns>A string value of the relative path</returns>
public string GetViewPath(string viewName, string controllerName, out string[] SearchedLocations) {
return FindPath(viewName, controllerName, out SearchedLocations);
}
/// <summary>
/// Look for the view in the current file system
/// </summary>
/// <param name="viewName">The name of the View you're looking for</param>
/// <param name="controllerName">Current controller name</param>
/// <param name="SearchedLocations">out a list of locations searched</param>
/// <returns>A string value of the relative path</returns>
public string FindPath(string viewName, string controllerName, out string[] SearchedLocations) {
SearchedLocations = new string[SearchLocations.Length];
for (int i = 0; i < SearchLocations.Length; i++) {
string virtualPath = string.Format(SearchLocations[i], viewName, controllerName);
SearchedLocations[i] = virtualPath;
//check the active VirtualPathProvider if the file exists
if (VirtualPathProvider.FileExists(virtualPath)) {
//add it to cache - not currently implemented
return VirtualPathProvider.GetFile(virtualPath).VirtualPath;
}
}
return null;
}
/// <summary>
/// Get the layout virtual path
/// </summary>
/// <param name="controllerContext">The current Controller context for this request</param>
/// <returns>A string virtual path</returns>
public string GetLayoutPath(ControllerContext controllerContext) {
//This should probably be added to a list of locations - I'm not sure exactly
//what I need to do with this yet.
string[] locations;
return FindPath("Layout", controllerContext.RouteData.GetRequiredString("controller"), out locations);
}
/// <summary>
/// Current irrelevant
/// </summary>
/// <param name="controllerContext">The active controller context</param>
/// <param name="view">View to release</param>
public void ReleaseView(ControllerContext controllerContext, IView view) {
IDisposable disposable = view as IDisposable;
if (disposable != null) {
disposable.Dispose();
}
}
#endregion
}
/// <summary>
/// Implements IView and renders a Razor
/// </summary>
public class RazorView : IView {
ControllerContext ControllerContext;
string ViewPath;
string LayoutPath;
RazorViewEngine Engine;
public RazorView(RazorViewEngine engine, ControllerContext controllerContext, string viewPath, string layoutPath) {
//load the file
this.ControllerContext = controllerContext;
this.ViewPath = viewPath;
this.LayoutPath = layoutPath;
this.Engine = engine;
}
#region IView Members
/// <summary>
/// Converts Razor to html and writes it to the passed in writer
/// </summary>
/// <param name="viewContext"></param>
/// <param name="writer"></param>
public void Render(ViewContext viewContext, System.IO.TextWriter writer) {
//View contents
string contents = new StreamReader(VirtualPathProvider.OpenFile(ViewPath)).ReadToEnd();
string layoutContents = LayoutPath == null
? null
: new StreamReader(VirtualPathProvider.OpenFile(LayoutPath)).ReadToEnd();
contents = Parse(contents);
string output;
output = contents;
writer.Write(output);
}
/// <summary>
/// Converts Razor to html
/// </summary>
/// <param name="Razor">Razor text</param>
/// <returns>Html formatted Razor text</returns>
string Parse(string Razor) {
//Where do I get the model From
return RazorEngine.Razor.Parse(Razor);
}
#endregion
}
}
I'm curious as to whether the following will negatively impact performance in a significant way...
I have a web form with an input box and grid (could be any form of application really) and allows the user to search Active Directory for users...I don't want user accounts that have the $ as part of there sAMAccountName and so am wondering whether I should have them returned and then filter them out in a loop in the application or whether they should be excluded in the ActiveDirectory filter like the following:
(&(objectCateogry=person)(objectClass=user)(!(sAMAccountName=*$*))(cn=<Insert User Query>))
I guess it's the *$* that i'm concerned will impact performance...any insight would be greatly appreciated!
I would include (!(sAMAccountName=*$*)) in the query for the following reasons:
It is indexed in Active Directory so searches are quick.
In most environments domain controllers aren't hit as hard as web servers and have CPU and RAM to spare.
I'm just guessing but I would think that the extra entries that the domain controllers will have to process and send to the web server would actually make everything take a little longer. You could try it both ways in your environment and measure the difference.
Also, you could take a look at the classes in System.DirectoryServices.Protocols if you're concerned with performance.
The filter about AD as follwing:
class ExpressionTemplates
{
/// <summary>
/// The start with expression. eg: "({0}={1}*)".
/// </summary>
public readonly static string StartWithExpression = "({0}={1}*)";
/// <summary>
/// The end with expression. eg: "({0}=*{1})".
/// </summary>
public readonly static string EndWithExpression = "({0}=*{1})";
/// <summary>
/// The has a value expression. eg: "({0}=*)".
/// </summary>
public readonly static string HasAValueExpression = "({0}=*)";
/// <summary>
/// The has no value expression. eg: "(!{0}=*)".
/// </summary>
public readonly static string HasNoValueExpression = "(!{0}=*)";
/// <summary>
/// The is expression. eg: "({0}={1})".
/// </summary>
public readonly static string IsExpression = "({0}={1})";
/// <summary>
/// The is not expression. eg: "(!{0}={1})".
/// </summary>
public readonly static string IsNotExpression = "(!{0}={1})";
/// <summary>
/// The and expression. eg: "(&{0})".
/// </summary>
public readonly static string And = "(&{0})";
/// <summary>
/// The or expression. eg: "(|{0})".
/// </summary>
public readonly static string Or = "(|{0})";
/// <summary>
/// The parenthesis expression. eg: "({0})".
/// </summary>
public readonly static string Parenthesis = "({0})";
/// <summary>
/// The join expression. eg: "{0}{1}".
/// </summary>
public readonly static string Join = "{0}{1}";
}
You can refer my OSS project which base on ActiveRecord pattern as following(Because it is open source you can find out how to operate the AD with DirectoryEntry, DirectoryEntry is not only support the LDAP protocol but also IIS, WIN and so on, so I develop this lib):
class ComplexFilterUnitTest : BaseUnitTest
{
[TestCase]
public void TestComplexFilter()
{
IFilter filter =
new And(
new IsUser(),
new Is(OrganizationalUnitAttributeNames.OU, "pangxiaoliangOU"),
new Or(
new StartWith(AttributeNames.CN, "pang"),
new And(
new EndWith(AttributeNames.CN, "liu"),
new Is(PersonAttributeNames.Mail, "mv#live.cn")
)
)
);
Assert.AreEqual("(&(objectClass=user)(ou=pangxiaoliangOU)(|(cn=pang*)(&(cn=*liu)(mail=mv#live.cn))))", filter.BuildFilter());
foreach (var userObject in UserObject.FindAll(this.ADOperator, filter))
{
using (userObject)
{
Console.WriteLine(userObject.DisplayName);
}
}
}
}
https://landpyactivedirectory.codeplex.com/documentation
And you will find it easy to operate the AD with it, if you have no interest with it please ignore my answer.
Any question about AD please contact me :)