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namespace System.Web.ModelBinding {
using System;
using System.Collections.Generic;
using System.Web;
/// <summary>
/// This class provides all the external things that the Model Binding System requires.
/// These include HttpContext and ModelState.
/// </summary>
public class ModelBindingExecutionContext {
private Dictionary<Type, object> _services = new Dictionary<Type,object>();
private HttpContextBase _httpContext;
private ModelStateDictionary _modelState;
public ModelBindingExecutionContext(HttpContextBase httpContext, ModelStateDictionary modelState) {
if (httpContext == null) {
throw new ArgumentNullException("httpContext");
}
if (modelState == null) {
throw new ArgumentNullException("modelState");
}
_httpContext = httpContext;
_modelState = modelState;
}
public virtual HttpContextBase HttpContext {
get {
return _httpContext;
}
}
public virtual ModelStateDictionary ModelState {
get {
return _modelState;
}
}
public virtual void PublishService<TService>(TService service) {
_services[typeof(TService)] = service;
}
public virtual TService GetService<TService>() {
return (TService)_services[typeof(TService)];
}
public virtual TService TryGetService<TService>() {
if (_services.ContainsKey(typeof(TService))) {
return (TService)_services[typeof(TService)];
}
return default(TService);
}
}
}
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