Unable to create a file using c#

Question

1.00/5 (1 vote)

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C#

namespace SimpleLicense
{
    class Program
    {
        static void Main(string[] args)
        {
        
            string fileName = @"C:\\Temp\\abc.txt";

            try
            {
                // Check if file already exists. If yes, delete it. 
                if (File.Exists(fileName))
                {
                    File.Delete(fileName);
                }

                // Create a new file 
                using (StreamWriter sw = File.CreateText(fileName))
                {
                    sw.WriteLine("Installed Date: {0}", DateTime.Now.ToString());
                    sw.WriteLine("Thermo Licensing System file");
                    
                    DateTime newDate = DateTime.Now.AddDays(31);
                    sw.WriteLine("License Expires After"+newDate);
                    
                   // sw.WriteLine("Add ");
                   // sw.WriteLine("Done! ");
                }

                // Write file contents on console. 
                using (StreamReader sr = File.OpenText(fileName))
                {
                    string s = "";
                    while ((s = sr.ReadLine()) != null)
                    {
                        Console.WriteLine(s);
                    }
                }
            }
            catch (Exception Ex)
            {
                Console.WriteLine(Ex.ToString());
            }
        }
    }
}

Hello Everyone,

I have written the above program to create a .txt file to a particular directory.But I am not able to create the file.I even changed the path to string fileName = @"D:\\abc.txt"; ,the program compiles but a file to that particular directory is not created.Would anyone help me to figure out what could be the error?

Thanks

Posted 19-May-14 3:20am

vivek murli

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Comments

ZurdoDev 19-May-14 10:54am

All you have to do is debug it. Have you done that?

2 solutions

Solution 3

In addition to the correct Solution 1:

C#

if (File.Exists(fileName)) // no need to do it
{
    File.Delete(fileName); // don't delete the file, if will be overwritten anyway
}

And also, don't use File.CreateText and the like. Instead, use something like:

using (StreamWriter writer = new StreamWriter(fileName)) {
    writer.WriteLine(/* ... */);
    // ...
} // here, writer.Dispose() is automatically called

You will need to do similar thing with the reader.

—SA

Posted 19-May-14 5:49am

Sergey Alexandrovich Kryukov

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Andrius Leonavicius · Accepted Answer · 2014-05-19T03:30:00

Solution 1

Hi,

The problem is on this line:

C#

string fileName = @"C:\\Temp\\abc.txt";

Try to replace it with this:

C#

string fileName = @"C:\Temp\abc.txt";

In a normal string you would need to escape \ into \\. But you're using @ before the file name, so you don't need to do that.

Posted 19-May-14 3:30am

Andrius Leonavicius

Updated 19-May-14 3:41am

v2

Comments

vivek murli 19-May-14 9:52am

I rectified.Still not able to create

Andrius Leonavicius 19-May-14 10:06am

I think that you don't have a folder "Temp" in the C: drive.
Try adding the line in bold:
// Create a new file
Directory.CreateDirectory(Path.GetDirectoryName(fileName));
using (StreamWriter sw = File.CreateText(fileName))

Sergey Alexandrovich Kryukov 19-May-14 11:50am

Good catch, both the answer and the comment. My 5.
I added a couple of good suggestions in Solution 3, please see.
—SA

Andrius Leonavicius 19-May-14 12:31pm

Thank you, Sergey. +5 for you as well.

Sergey Alexandrovich Kryukov 19-May-14 12:39pm

Thank you, Andrius.
—SA

Andrius Leonavicius 19-May-14 12:45pm

You're welcome. ;)