在IIS 7.0中部署时，检索txt文件会导致错误

Question

I have a text file RHKLIS.txt which is placed in D:\\ drive . I have found out some piece of code to retrieve the path of the text file and it is working fine while running in the local host . I have deployed the code in some test machine using IIS 7.0 and tried accessing the same code but its not retrieving its giving the error as Sql transaction has closed in the line if (!File.Exists(path)). So i got to know that path specified is an issue in the code.But still i am not aware of what type of error it is because there is a same text file placed in the D:\\ drive in the same test machine.

in web.config

<appSettings>

  <add key="LISpath" value="D:\RHKLIS.txt"/>

</appSettings>

.cs file

   string path = ConfigurationManager.AppSettings["LISpath"].ToString(); 
   FileStream fs = null;
   if (!File.Exists(path))
   {
       fs = File.Create(path);
       fs.Close();
   }

   StreamWriter sw = File.AppendText(path);

   sw.WriteLine("O~" + billHospNo.Text.Trim() + "~ ~" + opBillNo.Text + "~" + billDate.Text + "~" + itemCode.Text + "~" + itemName.Text + "~" + p.Honourfic + "~" + p.Patient_Name + "~" + p.Gender + "~" + p.Age + "~" + "Y" + "~" + "~" + "~" + "~" + "~" + "~" + department.SelectedItem.ToString() + "~" + billDate.Text + "~" + itemDept.Value + "~" + deptName + "~" + yearOB + "~" + due);
   sw.Close();

Answer 1

This sounds like a security problem. Firstly, the file being on the root of D: would mean that you would have open the whole D: to the IIS server (not good practice). Rather create a new folder, add the IIS_IUSRS user (with read & execute, List folder contents and Read permissions) - then put the file in that folder. Change the setting in the config file and that should work...

Answer 2

This is making the assumption you have you have full admin rights on the server.

Right-click on the folder, select properties. A property window of the folder will open - select the Security tag. You will see two lists - the top is for the users or groups and the bottom is the rights - click the Edit button under users.

Another widow will open - click the Add button - which will open another window. Make sure the locations is for the local machine and not a domain, then click advanced, and click the Find Now button. Look through the list until you see the IIS_IUSRS user and double-click on it. This will put the user in the bottom text filed of the selection window. Just click ok and it will automatically give that user the required permissions for the folder - then just click on ok all the way until all the windows are closed.

I hope this helps... This allow read-only access to that folder from IIS.