Access is denied

[srinivasanr]

This is my code.

When i execute this code, it throws "Access to the path "somepath" is denied."

FileStream file = new FileStream(filePath, FileMode.Create, FileAccess.Write);
                StreamWriter sw = new StreamWriter(file);
                try
                {
                    sw.Write(vendorInfoStr.ToString());
                }

What is going wrong.

Thanks,
Srinivasan R.

[PRR]

@srinivasanr
What application are you using? if its asp.net then it doesnot have fileIO permission...or if you maynot have permission to create in that folder...

[PRR]

using System.Security.Permissions;
 
string filePath = @"C:\Zp\Er.txt";
 System.IO.FileInfo fname = new System.IO.FileInfo(filePath);
 
              FileIOPermission permis = new FileIOPermission(FileIOPermissionAccess.AllAccess, fname.DirectoryName);
 
              bool all = true;
              try
              {
                  permis.Demand();    
                  permis.PermitOnly();             
 
              }
 
              catch (System.Security.SecurityException ex)
              {
                  all = false;
              }
 
              if (all)
              {
//do your stuff
}
 

[srinivasanr]

I am using only ASP.NET. But this code is working in my testing environment.
But it is not working in my production server.

This is the log file.

17:00:03 [9] ERROR VendorIntegration - Error while Transformming Vendor: 
 
System.UnauthorizedAccessException: Access to the path 'some path' is denied.
 
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
 
   at 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)
 
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy)
 
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access)
 
   at DataAccess.Process.VendorIntegration.TransformSource(IList vendorInfoList) 

[PRR]

You could either use impersonation How to implement impersonation in an ASP.NET application
or give rights to asp.net on that particular...

[srinivasanr]

thnaks for the reply.

I have used the methods Impersonate the IIS authenticated account or user and it is working fine when i call the code through UI.

But i have called that code automatically by using Thread concept.
Now it throws the same error "UnAuthorizedAccess" exception. Access is denied.

What can i do for it?

[semomaniz]

You will have to give write permission to the folder that you are outputting the text file through the IIS.

[srinivasanr]

@semomaniz
I do not know how to give write permission to the destination folder through IIS. Please direct me.

[PRR]

@srinivasanr
I am not sure whether this is the right way.. normally for testing i usually do this ... do ask a system admin for the "correct" way.
1. go to properties of the folder you want to give asp.net write rights.
2. Click security->add->advanced ->click on find now...Here you will find list of users... depending on what you have installed on your computer... click asp.net account and add and give permission to it ...

[srinivasanr]

I gave all permissions to all users and it is working when i call that code through UI. But it is not working when i call that same code through automated job by the use of Thread concept.

[PRR]

@srinivasanr
What do you mean by that?

[srinivasanr]

I mean i call the same code through Thread concept at a specified time.

[PRR]

@srinivasanr
Within the same application using a thread... shouldn't be a problem... Could you post some code and error message?

[srinivasanr]

Please see my first post...

[srinivasanr]

This is my code

FileStream file = new FileStream(filePath, FileMode.Create, FileAccess.Write); 
                StreamWriter sw = new StreamWriter(file); 
                try 
                { 
                    sw.Write(vendorInfoStr.ToString()); 
 
                } 

This is my log message

17:00:03 [9] ERROR VendorIntegration - Error while Transformming Vendor:  
 
System.UnauthorizedAccessException: Access to the path 'some path' is denied. 
 
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) 
 
   at 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) 
 
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy) 
 
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access) 
 
   at DataAccess.Process.VendorIntegration.TransformSource(IList vendorInfoList)