c# - Parser Error Message: Could not load type 'webmarketing' -

after finishing web application , publishing online no matter try keep getting following error, keep in mind runs locally should...

parser error message: not load type 'webmarketing'.

i ran through solution though supposedly i'm doing same solution, yet i'm still facing same issue...

asp.net parser error cannot load code behind

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here code behind:

using system; using system.collections.generic; using system.linq; using system.web; using system.web.ui; using system.web.ui.webcontrols;  namespace webmarketing {     public partial class masterpage : system.web.ui.masterpage     {         protected void page_load(object sender, eventargs e)         {             string admin = (string)session["admin"];             if (string.isnullorempty(admin))             {                 logout.visible = false;             }             else             {              }         }     } } 

i had same problem before change codebehind codefile , worked.i remember works in local had problem after uploading.