asp.net - Using MultiView and View in .net giving following error -

i testing multiview , view in application , getting error:

    compiler error message: cs1061: 'asp.default_aspx' not contain definition 'nextview' , no extension method 'nextview' accepting first argument of type 'asp.default_aspx' found (are missing using directive or assembly reference?)  source error:   line 24:                 view 1 . have ! cool because of c#.<br /> line 25:                 <br /> line 26:                 <asp:button id="button1" runat="server" text="next" onclick="nextview" /> line 27:                 <br /> line 28:                 <br />  source file: c:\users\xxxxx\documents\visual studio 2012\projects\windowsazure2\testcrole\default.aspx    line: 26    show detailed compiler output:        c:\program files\iis express> "c:\windows\microsoft.net\framework64\v4.0.30319\csc.exe" /t:library /utf8output /r:"c:\windows\microsoft.net\assembly\gac_msil\system.web.entity\v4.0_4.0.0.0__b77a5c561934e089\system.web.entity.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\6e2beae7\65ed30e8_a086ce01\dotnetopenauth.core.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.servicemodel.web\v4.0_4.0.0.0__31bf3856ad364e35\system.servicemodel.web.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.web.services\v4.0_4.0.0.0__b03f5f7f11d50a3a\system.web.services.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.servicemodel.activation\v4.0_4.0.0.0__31bf3856ad364e35\system.servicemodel.activation.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\f8024e97\5ae96ae9_a086ce01\dotnetopenauth.aspnet.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\c3d9637a\918f4ce5_a086ce01\antlr3.runtime.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.web.webpages.deployment\v4.0_1.0.0.0__31bf3856ad364e35\system.web.webpages.deployment.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.activities\v4.0_4.0.0.0__31bf3856ad364e35\system.activities.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\0ef8a197\0002c02e_8037ce01\microsoft.windowsazure.diagnostics.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\8cf78885\661236e9_a086ce01\dotnetopenauth.openid.relyingparty.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\system.configuration.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\0f135984\0002c02e_8037ce01\microsoft.windowsazure.diagnostics.storageutility.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.servicemodel.activities\v4.0_4.0.0.0__31bf3856ad364e35\system.servicemodel.activities.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\9af94552\fd6f8ee7_a086ce01\microsoft.scriptmanager.webforms.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\6a1d662a\440d81e6_a086ce01\aspnet.scriptmanager.jquery.ui.combined.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\c173128b\d527edf3_a086ce01\microsoft.windowsazure.configuration.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\fd6a6bde\883f6ef3_a086ce01\microsoft.data.edm.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.data.datasetextensions\v4.0_4.0.0.0__b77a5c561934e089\system.data.datasetextensions.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\mscorlib.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\f48702fd\d6c260f4_a086ce01\microsoft.windowsazure.storage.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\microsoft.csharp\v4.0_4.0.0.0__b03f5f7f11d50a3a\microsoft.csharp.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary  sp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\013c6eb1\224a2af3_a086ce01\system.spatial.dll" /r:"c:\windows\microsoft.net\assembly\gac_64\system.enterpriseservices\v4.0_4.0.0.0__b03f5f7f11d50a3a\system.enterpriseservices.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\app_web_4ujcsvkd.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.web.dynamicdata\v4.0_4.0.0.0__31bf3856ad364e35\system.web.dynamicdata.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.workflowservices\v4.0_4.0.0.0__31bf3856ad364e35\system.workflowservices.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.core\v4.0_4.0.0.0__b77a5c561934e089\system.core.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.componentmodel.dataannotations\v4.0_4.0.0.0__31bf3856ad364e35\system.componentmodel.dataannotations.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\d0dfc6a8\b31683e8_a086ce01\dotnetopenauth.oauth.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\ea4ee4b1\08e025e6_a086ce01\system.web.optimization.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\41a8bdc9\6cc349e6_a086ce01\aspnet.scriptmanager.jquery.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.xml\v4.0_4.0.0.0__b77a5c561934e089\system.xml.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.web.extensions\v4.0_4.0.0.0__31bf3856ad364e35\system.web.extensions.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\fe7db49b\dc9293e5_a086ce01\system.web.providers.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\microsoft.visualstudio.web.pageinspector.loader\v4.0_1.0.0.0__b03f5f7f11d50a3a\microsoft.visualstudio.web.pageinspector.loader.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.web.applicationservices\v4.0_4.0.0.0__31bf3856ad364e35\system.web.applicationservices.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.runtime.serialization\v4.0_4.0.0.0__b77a5c561934e089\system.runtime.serialization.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\microsoft.web.infrastructure\v4.0_1.0.0.0__31bf3856ad364e35\microsoft.web.infrastructure.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\b65b2946\e442abeb_a086ce01\microsoft.aspnet.friendlyurls.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\86ffbcaf\1a0b54e5_a086ce01\webgrease.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\b859b3a5\ff2db5e8_a086ce01\dotnetopenauth.oauth.consumer.dll" /r:"c:\windows\microsoft.net\assembly\gac_64\system.web\v4.0_4.0.0.0__b03f5f7f11d50a3a\system.web.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\app_global.asax.al4ak3u5.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\228bb4bd\6145e1e9_a086ce01\entityframework.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\67c861d6\58ca9b56_a286ce01\testcrole.dll" /r:"c:\windows\microsoft.net\assembly\gac_64\system.data\v4.0_4.0.0.0__b77a5c561934e089\system.data.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\system.drawing.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.identitymodel\v4.0_4.0.0.0__b77a5c561934e089\system.identitymodel.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\4f582235\3a8a04e7_a086ce01\microsoft.scriptmanager.msajax.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\23c9d56d\58494aeb_a086ce01\microsoft.aspnet.membership.openauth.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.xml.linq\v4.0_4.0.0.0__b77a5c561934e089\system.xml.linq.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\bb0ccab2\67d8b9f3_a086ce01\microsoft.data.odata.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\991d36a5\dbdde9e8_a086ce01\dotnetopenauth.openid.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system\v4.0_4.0.0.0__b77a5c561934e089\system.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.web.webpages.deployment\v4.0_2.0.0.0__31bf3856ad364e35\system.web.webpages.deployment.dll" /r:"c:\windows\microsoft.net\assembly\gac_msil\system.servicemodel\v4.0_4.0.0.0__b77a5c561934e089\system.servicemodel.dll" /r:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\assembly\dl3\171e3f4f\3f887ceb_a086ce01\microsoft.aspnet.web.optimization.webforms.dll" /out:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\app_web_zxhsulcz.dll" /d:debug /debug+ /optimize- /win32res:"c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\zxhsulcz.res" /w:4 /nowarn:1659;1699;1701;612;618 /warnaserror-  "c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\app_web_zxhsulcz.0.cs" "c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\app_web_zxhsulcz.1.cs" "c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\app_web_zxhsulcz.2.cs" "c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\app_web_zxhsulcz.3.cs" "c:\windows\microsoft.net\framework64\v4.0.30319\temporary asp.net files\root\6364a8aa\d5e0a0cd\app_web_zxhsulcz.4.cs"   microsoft (r) visual c# compiler version 4.0.30319.17929 

can explain doing wrong ? or error means..

i have found answer question.

i need use protected classes used button.

that's it.. :p