Server Error in '/' Application.

Access to the path 'C:\inetpub\wwwroot\lib.nstru.ac.th\ErrorLog\ErrorLog.txt' is denied.

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.UnauthorizedAccessException: Access to the path 'C:\inetpub\wwwroot\lib.nstru.ac.th\ErrorLog\ErrorLog.txt' is denied.

ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6 and IIS 7, and the configured application pool identity on IIS 7.5) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate="true"/>, the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.

To grant ASP.NET access to a file, right-click the file in File Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.

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:


[UnauthorizedAccessException: Access to the path 'C:\inetpub\wwwroot\lib.nstru.ac.th\ErrorLog\ErrorLog.txt' is denied.]
   System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +12797107
   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) +738
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) +68
   System.IO.StreamWriter.CreateFile(String path, Boolean append, Boolean checkHost) +76
   System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize, Boolean checkHost) +75
   System.IO.StreamWriter..ctor(String path, Boolean append) +39
   log.LogError(String ex, String page) +335
   SolrnetSearch.KeywordSearch() +5632
   SolrnetSearch..ctor(DataTable InputQuery_, Int32 CurrentPage_, Int32 RowPerPage_, String OrderBy_) +506
   Results.binding_keyword(String Ntk, String Ntt, String Nto, Int32 _currentPage) +1833
   Results.Page_Load(Object sender, EventArgs e) +853
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4682.0