public override void OnResultExecuting(ResultExecutionContext context)
{
if (_suppressResultFiltering)
return;
HttpResponseBase response = context.HttpContext.Response;
context.HttpContext.Session.UpdateSessionId();
_filter = response.Filter;
response.Flush();
response.Filter = new CaptureFilter(response.Filter);
}
public override void OnResultExecuting(ResultExecutionContext context)
{
if (_suppressResultFiltering)
{
return;
}
HttpResponseBase response = context.HttpContext.Response;
context.HttpContext.Session.UpdateSessionId();
_filter = response.Filter;
response.Flush();
response.Filter = new CaptureFilter(response.Filter);
}
protected virtual ResultExecutedContext InvokeActionResultFilters(
ControllerContext context, ICollection <IResultFilter> filters, ActionResult result)
{
Precondition.Require(context, () => Error.ArgumentNull("context"));
Precondition.Require(result, () => Error.ArgumentNull("result"));
Precondition.Require(filters, () => Error.ArgumentNull("filters"));
ResultExecutionContext rec = new ResultExecutionContext(context, result);
Func <ResultExecutedContext> continuation = () => {
InvokeActionResult(context, result);
return(new ResultExecutedContext(context, rec.Result, null));
};
Func <ResultExecutedContext> thunk = filters.Reverse().Aggregate(continuation,
(next, filter) => () => InvokeActionResultFilter(filter, rec, next));
return(thunk());
}
private static ResultExecutedContext InvokeActionResultFilter(IResultFilter filter,
ResultExecutionContext context, Func <ResultExecutedContext> continuation)
{
filter.OnResultExecuting(context);
if (context.Cancel)
{
return(new ResultExecutedContext(context, null));
}
bool wasError = false;
ResultExecutedContext postContext = null;
try
{
postContext = continuation();
}
catch (ThreadAbortException)
{
// This type of exception occurs as a result of Response.Redirect(), but we special-case so that
// the filters don't see this as an error.
postContext = new ResultExecutedContext(context, null);
filter.OnResultExecuted(postContext);
throw;
}
catch (Exception ex)
{
wasError = true;
postContext = new ResultExecutedContext(context, ex);
filter.OnResultExecuted(postContext);
if (!postContext.ExceptionHandled)
{
throw;
}
}
if (!wasError)
{
filter.OnResultExecuted(postContext);
}
return(postContext);
}
public virtual void OnResultExecuting(ResultExecutionContext context)
{
}
public virtual void OnResultExecuting(ResultExecutionContext context)
{
}
protected virtual ResultExecutedContext InvokeActionResultFilters(
ControllerContext context, ICollection<IResultFilter> filters, ActionResult result)
{
Precondition.Require(context, () => Error.ArgumentNull("context"));
Precondition.Require(result, () => Error.ArgumentNull("result"));
Precondition.Require(filters, () => Error.ArgumentNull("filters"));
ResultExecutionContext rec = new ResultExecutionContext(context, result);
Func<ResultExecutedContext> continuation = () => {
InvokeActionResult(context, result);
return new ResultExecutedContext(context, rec.Result, null);
};
Func<ResultExecutedContext> thunk = filters.Reverse().Aggregate(continuation,
(next, filter) => () => InvokeActionResultFilter(filter, rec, next));
return thunk();
}
private static ResultExecutedContext InvokeActionResultFilter(IResultFilter filter,
ResultExecutionContext context, Func<ResultExecutedContext> continuation)
{
filter.OnResultExecuting(context);
if (context.Cancel)
return new ResultExecutedContext(context, null);
bool wasError = false;
ResultExecutedContext postContext = null;
try
{
postContext = continuation();
}
catch (ThreadAbortException)
{
// This type of exception occurs as a result of Response.Redirect(), but we special-case so that
// the filters don't see this as an error.
postContext = new ResultExecutedContext(context, null);
filter.OnResultExecuted(postContext);
throw;
}
catch (Exception ex)
{
wasError = true;
postContext = new ResultExecutedContext(context, ex);
filter.OnResultExecuted(postContext);
if (!postContext.ExceptionHandled)
throw;
}
if (!wasError)
filter.OnResultExecuted(postContext);
return postContext;
}
/// <summary>
/// Method called before the action result returned by an action method is executed.
/// </summary>
/// <param name="context">Contains information about the current request and action result</param>
protected virtual void OnPreResult(ResultExecutionContext context)
{
}
void IResultFilter.OnResultExecuting(ResultExecutionContext context)
{
OnPreResult(context);
}
