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ASP .NET 4.6 MVC controller creates Razor Template at runtime and runs it using RazorEngine.
One big template causes Stack Overflow exception when running from Visual Studio or Method CompiledRazorTemplates.Dynamic.dbcfcaeeb:Execute () is too complex. when runing from Mono.
If large number of divs are removed from template, it compiles and runs OK.
How to fix this ? How to increase net stack size or any other idea ?
Razor template which causes this has 2880 lines. It contains 228 variables and lot of divs:
@inherits Reporting.ReportTemplateBase<MYApp.ViewModels.RazorViewModel>
<!DOCTYPE html>
<html>
....
<body>
@{
dynamic Vrapopref=ko.Keel;
dynamic Vymardada=Iif(Ko.Ymardus==1,2,Iif(Ko.Ymardus==2,0,1));
dynamic Vjag=Iif(Ko.Ymardus!=3,1,1000);
dynamic V4gr= true ;
dynamic Vs41gr=0;
dynamic Vs42gr=0;
...
dynamic _calculated229=Round(Vs52gr/Vjag*Iif(Core.Left(r.BilskeemKontoklass,1)=="K",-1,1),Vymardada);
_calculated229=SetDefault(_calculated229);
}
<div class='row' style='min-height:0.45cm'>
<div class='field' style='@TextBox(0.00,0.66,7.37,0.45);font-family:"Arial";font-weight:bold;'>@{try{WriteLiteral(Out(Eeva.Business.Prpalk.GetSfirmanimi()));} catch (Exception ex) {LogiVormiViga("Out(Eeva.Business.Prpalk.GetSfirmanimi())",ex);} }</div>
</div>
<div class='row' style='min-height:0.03cm'>
<div class='field' style='@TextBox(0.00,1.87,2.39,0.45);font-family:"Arial";font-size:9pt;'>@{try{WriteLiteral(Out(Ise.Regnr));} catch (Exception ex) {LogiVormiViga("Out(Ise.Regnr)",ex);} }</div>
</div>
<div class='row' style='min-height:0.42cm'>
<div class='field' style='left:0.66cm;font-family:"Arial";font-size:9pt;'>@Raw(IR("Reg nr"))</div>
</div>
<div class='row' style='min-height:0.71cm'>
<div class='field' style='@TextBox(0.00,0.66,7.74,0.55);font-family:"Arial";font-size:9pt;'>@{try{WriteLiteral(Out(RTrim(Ise.Tanav)+" "+RTrim(Ise.Piirkond)+" "+RTrim(Ise.Postiindek)));} catch (Exception ex) {LogiVormiViga("Out(RTrim(Ise.Tanav)+\" \"+RTrim(Ise.Piirkond)+\" \"+RTrim(Ise.Postiindek))",ex);} }</div>
</div>
<div class='row' style='min-height:0.71cm'>
<div class='field' style='left:0.66cm;font-family:"Arial";font-size:16pt;font-weight:bold;'>@Raw(IR("TULEMIARUANNE KUUDE KAUPA"))</div>
</div>
<div class='row' style='min-height:0.39cm'>
<div class='field' style='@TextBox(0.00,0.66,4.00,0.42);font-family:"Arial";font-size:9pt;font-weight:bold;'>@{try{WriteLiteral(Out(Format(Ko.Akuupaev,"-",Ko.Lkuupaev, "d")));} catch (Exception ex) {LogiVormiViga("Out(Format(Ko.Akuupaev,\"-\",Ko.Lkuupaev, \"d\"))",ex);} }</div>
...
</body>
</html>
Whole template is in http://wikisend.com/download/177922/stackoverflow.TXT
Results:
.NET:
exception details contains only
{<Internal Error evaluating expression>}
Mono:
System.InvalidProgramException]: Method CompiledRazorTemplates.Dynamic.dbcfcaeeb:Execute () is too complex.
at RazorEngine.Templating.TemplateBase.RazorEngine.Templating.ITemplate.Run (RazorEngine.Templating.ExecuteContext context) <0x42194120 + 0x001b9> in <filename unknown>:0
at RazorEngine.Templating.TemplateService.Run (ITemplate template, RazorEngine.Templating.DynamicViewBag viewBag) <0x42193d10 + 0x0005b> in <filename unknown>:0
at (wrapper remoting-invoke-with-check) RazorEngine.Templating.TemplateService:Run (RazorEngine.Templating.ITemplate,RazorEngine.Templating.DynamicViewBag)
at RazorEngine.Templating.TemplateService.Parse (System.String razorTemplate, System.Object model, RazorEngine.Templating.DynamicViewBag viewBag, System.String cacheName) <0x4218ac70 + 0x00077> in <filename unknown>:0
at RazorEngine.Razor.Parse[T] (System.String razorTemplate, RazorEngine.T model, System.String cacheName) <0x4218ab00 + 0x0003f> in <filename unknown>:0
You have a loop like this in your code
@do { } while (!endOfData);Make sure thatendOfDatabecomestrueat some point.That's some of the ugliest code I've seen for a while. You should refactor it to use arrays or move the calculations to the controller. It might be the Mono error is correct, that the page is too complex.
And a bit later:
How to debug a StackOverflow Exception has already been asked here:
Bassically, go to Debug -> exceptions and check the
throwncheckbox atCommon Language Runtime Exceptions. Now when you cause the stackoverflow exception, the debugger will stop. When that happens, ignore the exception's stacktrace and go toVisual Studio's Call Stack windowand look at the call stack there.That will indicate which method is generating the infinite recursion.