public override string ToString()
{
using (var writer = new StringBlockWriter(CultureInfo.InvariantCulture))
{
_action(writer);
return writer.ToString();
}
}
public static MvcHtmlString Action(this HtmlHelper htmlHelper, string actionName, string controllerName, RouteValueDictionary routeValues)
{
using (var writer = new StringBlockWriter(CultureInfo.CurrentCulture))
{
ActionHelper(htmlHelper, actionName, controllerName, routeValues, writer);
return MvcHtmlString.Create(writer.ToString());
}
}
public static MvcHtmlString Partial(this HtmlHelper htmlHelper, string partialViewName, object model, ViewDataDictionary viewData)
{
using (var writer = new StringBlockWriter(CultureInfo.CurrentCulture))
{
htmlHelper.RenderPartialInternal(partialViewName, viewData, model, writer, ViewEngines.Engines);
return MvcHtmlString.Create(writer.ToString());
}
}
public static async Task<MvcHtmlString> PartialAsync(this HtmlHelper htmlHelper, string partialViewName, object model, ViewDataDictionary viewData)
{
using (var writer = new StringBlockWriter(CultureInfo.CurrentCulture))
{
await htmlHelper.RenderPartialInternalAsync(partialViewName, viewData, model, writer, ViewEngines.Engines).ConfigureAwait(false);
return MvcHtmlString.Create(writer.ToString());
}
}
public override string ToString()
{
using (var writer = new StringBlockWriter(CultureInfo.InvariantCulture))
{
_action(writer);
return(writer.ToString());
}
}
private async Task <HelperResult> RenderPageCoreAsync(string path, bool isLayoutPage, object[] data)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "path");
}
WebPageContext pageContext;
var subPage = PrepareRenderPage(path, isLayoutPage, data, out pageContext);
var writer = new StringBlockWriter(_currentWriter.FormatProvider);
await subPage.ExecutePageHierarchyAsync(pageContext, writer).ConfigureAwait(false);
return(new HelperResult(writer.CopyTo));
}
public void PushContext(WebPageContext pageContext, TextWriter writer)
{
_currentWriter = writer;
PageContext = pageContext;
pageContext.Page = this;
InitializePage();
// Create a temporary writer
_tempWriter = new StringBlockWriter(CultureInfo.InvariantCulture);
// Render the page into it
OutputStack.Push(_tempWriter);
SectionWritersStack.Push(new Dictionary <string, SectionWriter>(StringComparer.OrdinalIgnoreCase));
// If the body is defined in the ViewData, remove it and store it on the instance
// so that it won't affect rendering of partial pages when they call VerifyRenderedBodyOrSections
if (PageContext.BodyAction != null)
{
_body = PageContext.BodyAction;
PageContext.BodyAction = null;
}
}
public static async Task<MvcHtmlString> ActionAsync(this HtmlHelper htmlHelper, string actionName, string controllerName, RouteValueDictionary routeValues)
{
using (var writer = new StringBlockWriter(CultureInfo.CurrentCulture))
{
await ActionHelperAsync(htmlHelper, actionName, controllerName, routeValues, writer).ConfigureAwait(false);
return MvcHtmlString.Create(writer.ToString());
}
}
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
if (filterContext == null)
{
throw new ArgumentNullException("filterContext");
}
if (filterContext.IsChildAction)
{
// Skip validation and caching if there's no caching on the server for this action. It's ok to
// explicitly disable caching for a child action, but it will be ignored if the parent action
// is using caching.
if (IsServerSideCacheDisabled())
{
return;
}
ValidateChildActionConfiguration();
// Already actively being captured? (i.e., cached child action inside of cached child action)
// Realistically, this needs write substitution to do properly (including things like authentication)
if (GetChildActionFilterFinishCallback(filterContext) != null)
{
throw new InvalidOperationException(MvcResources.OutputCacheAttribute_CannotNestChildCache);
}
// Already cached?
string uniqueId = GetChildActionUniqueId(filterContext);
string cachedValue = ChildActionCacheInternal.Get(uniqueId) as string;
if (cachedValue != null)
{
filterContext.Result = new ContentResult() { Content = cachedValue };
return;
}
// Swap in a new TextWriter so we can capture the output
var cachingWriter = new StringBlockWriter(CultureInfo.InvariantCulture);
TextWriter originalWriter = filterContext.HttpContext.Response.Output;
filterContext.HttpContext.Response.Output = cachingWriter;
// Set a finish callback to clean up
SetChildActionFilterFinishCallback(filterContext, wasException =>
{
// Restore original writer
filterContext.HttpContext.Response.Output = originalWriter;
// Grab output and write it
string capturedText = cachingWriter.ToString();
filterContext.HttpContext.Response.Write(capturedText);
// Only cache output if this wasn't an error
if (!wasException)
{
ChildActionCacheInternal.Add(uniqueId, capturedText, DateTimeOffset.UtcNow.AddSeconds(Duration));
}
});
}
}
private async Task<HelperResult> RenderPageCoreAsync(string path, bool isLayoutPage, object[] data)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "path");
}
WebPageContext pageContext;
var subPage = PrepareRenderPage(path, isLayoutPage, data, out pageContext);
var writer = new StringBlockWriter(_currentWriter.FormatProvider);
await subPage.ExecutePageHierarchyAsync(pageContext, writer).ConfigureAwait(false);
return new HelperResult(writer.CopyTo);
}
public void PushContext(WebPageContext pageContext, TextWriter writer)
{
_currentWriter = writer;
PageContext = pageContext;
pageContext.Page = this;
InitializePage();
// Create a temporary writer
_tempWriter = new StringBlockWriter(CultureInfo.InvariantCulture);
// Render the page into it
OutputStack.Push(_tempWriter);
SectionWritersStack.Push(new Dictionary<string, SectionWriter>(StringComparer.OrdinalIgnoreCase));
// If the body is defined in the ViewData, remove it and store it on the instance
// so that it won't affect rendering of partial pages when they call VerifyRenderedBodyOrSections
if (PageContext.BodyAction != null)
{
_body = PageContext.BodyAction;
PageContext.BodyAction = null;
}
}
private void Write(StringBlockWriter writer)
{
Flush();
_parts.Add(writer);
}
private void Write(StringBlockWriter writer)
{
Flush();
_parts.Add(writer);
}
