Server Error in '/' Application.

The process cannot access the file 'D:\web\es\mag.aspx' because it is being used by another process.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.IOException: The process cannot access the file 'D:\web\es\mag.aspx' because it is being used by another process.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 


[IOException: The process cannot access the file 'D:\web\es\mag.aspx' because it is being used by another process.]
   System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +935
   System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) +1242
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) +126
   System.Web.Hosting.MapPathBasedVirtualFile.Open() +110
   System.Web.UI.TemplateParser.ParseFile(String physicalPath, VirtualPath virtualPath) +246
   System.Web.UI.TemplateParser.ParseInternal() +113
   System.Web.UI.TemplateParser.Parse() +200
   System.Web.Compilation.BaseTemplateBuildProvider.get_CodeCompilerType() +177
   System.Web.Compilation.BuildProvider.GetCompilerTypeFromBuildProvider(BuildProvider buildProvider) +164
   System.Web.Compilation.BuildProvidersCompiler.ProcessBuildProviders() +230
   System.Web.Compilation.BuildProvidersCompiler.PerformBuild() +31
   System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) +583
   System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) +351
   System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) +146
   System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean throwIfNotFound) +11746256
   System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp) +48
   System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +46
   System.Web.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +418
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +158

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4805.0