asp.net mvc - MVC 4.0 Routing Issue -

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i building out custom section in site, , has multiple routes, have controller set follows:

  • controller - exporttoexcel action
  • eomspreasheet parameters
  • eomdate, siteid

in routeconfig have following set up.

routes.maproute(name: "eomcoversheet", url: "{controller}/{action}/{eomdate}/{siteid}", defaults: new {     controller = "excelexport",     action = "eomspreasheet",     eomdate = urlparameter.optional,     siteid= urlparameter.optional });

when make call controller, , in code stepping through it, values eomdate , siteid null. when @ routedata can see action , controller, parameters route have in routeconfig file.

i have done numerous times in past, first time have seen behavior , not sure how resolve it. ye can provide appreciated.

two things note .net routing are:

  1. the routes executed in order first registered last, , first match wins.
  2. route tokens (such {controller}) match url segment unless put constraint on them.

this means route posted match any url 2, 3, or 4 segments in it. not useful if have default route matches any url 0, 1, 2, or 3 segments because have large amount of overlap , depending on order declared, 1 of them override other.

one practical solution use literal value route segment, , place route before more generic routes.

routes.maproute(name: "eomcoversheet", url: "excelexport/{action}/{eomdate}/{siteid}", defaults: new {     controller = "excelexport",     action = "eomspreasheet",     eomdate = urlparameter.optional,     siteid= urlparameter.optional });

what make route match url if begins excelexport segment , has 0, 1, 2, or 3 more segments in them.

/excelexport/ /excelexport/eomspreadsheet/ /excelexport/eomspreadsheet/2015-01-01/ /excelexport/eomspreadsheet/2015-01-01/123

if want match url if contains 4 segments, can make segments required instead of optional.

routes.maproute(name: "eomcoversheet", url: "excelexport/{action}/{eomdate}/{siteid}", defaults: new {     controller = "excelexport" });

now route match 4 segment url begins excelexport.

/excelexport/eomspreadsheet/2015-01-01/123

two other possible solutions problem are:

  1. use areas.
  2. use route constraints.

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