public string GetAbsolutePath(string executingFilePath, string pagePath)
{
if (string.IsNullOrEmpty(pagePath))
{
// Path is not valid; no change required.
return(pagePath);
}
if (IsApplicationRelativePath(pagePath))
{
// An absolute path already; no change required.
return(pagePath);
}
if (!IsRelativePath(pagePath))
{
// A page name; no change required.
return(pagePath);
}
if (string.IsNullOrEmpty(executingFilePath))
{
// Given a relative path i.e. not yet application-relative (starting with "~/" or "/"), interpret
// path relative to currently-executing view, if any.
// Not yet executing a view. Start in app root.
var absolutePath = "/" + pagePath;
return(ViewEnginePath.ResolvePath(absolutePath));
}
return(ViewEnginePath.CombinePath(executingFilePath, pagePath));
}
public static bool IsCurrentPage(this ViewContext context, string pageName)
{
string normalizedRouteValue = NormalizedRouteValue.GetNormalizedRouteValue(context, "page");
string expectedPageValue = ViewEnginePath.CombinePath(normalizedRouteValue, pageName);
RouteData routeData = context.HttpContext.GetRouteData();
var page = (string)routeData.Values["page"];
if (page == expectedPageValue)
{
return(true);
}
return(false);
}
private static object CalculatePageName(ActionContext actionContext, string pageName)
{
Debug.Assert(pageName.Length > 0);
// Paths not qualified with a leading slash are treated as relative to the current page.
if (pageName[0] != '/')
{
var currentPagePath = NormalizedRouteValue.GetNormalizedRouteValue(actionContext, "page");
if (string.IsNullOrEmpty(currentPagePath))
{
// Disallow the use sibling page routing, a Razor page specific feature, from a non-page action.
throw new InvalidOperationException(Resources.FormatUrlHelper_RelativePagePathIsNotSupported(pageName));
}
return(ViewEnginePath.CombinePath(currentPagePath, pageName));
}
return(pageName);
}
