Application Error Method Not Found
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring method not found set_ developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask method not found get_ c# Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join method not found 0 them; it only takes a minute: Sign up System.MissingMethodException: Method not found? up vote 90 down vote favorite 10 My asp.net webforms app was working fine until this morning. Now it throws this error?? The DoThis is on the c# missingmethodexception same class so should work? I have a generic handler which contains: public class MyHandler: IHttpHandler { public void Processrequest(HttpContext context) { switch (somepage) { case "page1.aspx" this.DoThis(); // throws error now System.MissingMethodException: Method not found? } } public void DoThis() { // } } c# asp.net httphandler share|improve this question edited Nov 9 '11 at 2:10 Amy 11.5k1348102 asked Nov 9 '11 at 0:09 user603007 3,3242368122 can you post some more code, because this code is
Method Not Found 'int32
not valid. –mironych Nov 9 '11 at 0:37 2 What is somepage? As 'sound' noted, this code isn't valid. Please give us a complete code snippet that demonstrates the problem. –Amy Nov 9 '11 at 2:11 add a comment| 17 Answers 17 active oldest votes up vote 163 down vote accepted This is a problem which can occur when there is an old version of a DLL still lingering somewhere around. Make sure that the latest assemblies are deployed and no duplicated older assemblies are hiding in certain folders. Your best bet would be to delete every built item and rebuild/redeploy the entire solution. share|improve this answer edited May 5 at 10:33 Luke Girvin 9,70554768 answered Nov 9 '11 at 2:10 Polity 9,20612132 26 In particular, be sure an old version is not in the GAC. –ladenedge Aug 4 '12 at 2:40 3 Also, if you're working in the unfortunate case where you have a library that depends on a library, that depends on a library, etc. Then make sure to Clean/Rebuild all of the dependent libraries with the same version of whichever dll, NHibernate in my case... –Serj Sagan Sep 19 '13 at 20:47 Upgrading the .NET target framework for the project can also fix the error. I was upgrading an MVC4 / Web API 1 project targeting .NET 4.5. After upgrading all the MVC, Web API, a
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