@{
var dataFilePath = "~/dataFile.txt";
var fileContents = "";
var physicalPath = Server.MapPath(dataFilePath);
var userMessage = "Hello world, the time is " + DateTime.Now;
var userErrMsg = "";
var errMsg = "";
if(IsPost)
{
// When the user clicks the "Open File" button and posts
// the page, try to open the created file for reading.
try {
// This code fails because of faulty path to the file.
fileContents = File.ReadAllText(@"c:\batafile.txt");
// This code works. To eliminate error on page,
// comment the above line of code and uncomment this one.
//fileContents = File.ReadAllText(physicalPath);
}
catch (FileNotFoundException ex) {
// You can use the exception object for debugging, logging, etc.
errMsg = ex.Message;
// Create a friendly error message for users.
userErrMsg = "A file could not be opened, please contact "
+ "your system administrator.";
}
catch (DirectoryNotFoundException ex) {
// Similar to previous exception.
errMsg = ex.Message;
userErrMsg = "A directory was not found, please contact "
+ "your system administrator.";
}
}
else
{
// The first time the page is requested, create the text file.
File.WriteAllText(physicalPath, userMessage);
}
}
Try-Catch Statements
@fileContents
@userErrMsg