Ufdjrw

i try to write line in file when this exists:

My code is next:

string strRuta = "C:File.txt"

if (!Directory.Exists(strRuta))
 Directory.CreateDirectory(strRuta);


string psContenido = "Hola";

if (!(File.Exists(strRuta + strNombreArchivo)))

 swArchivo = File.CreateText(strRuta + strNombreArchivo);



if (!psContenido.ToLower().Contains("error"))

 swArchivo.WriteLine(psContenido);

 swArchivo.Flush();
 swArchivo.Close();
 swArchivo.Dispose();
 File.SetCreationTime(strRuta + strNombreArchivo, DateTime.Now);

but when run this program i have a error in WriteLine, i don´t undertand which is the reason, could you help me?

I would like to know how to write in the file(in the next line the word)

There are a couple of problems, I think. First, you're specifying what looks like a file name and creating a directory with that name (not sure if this is intentional or not). Second, you can use the static helper method AppendAllText of the File class to both create the file if it doesn't exist, and to write the contents to the end of the file. It handles all the streamwriter stuff for you, so you don't have to worry about calling close and dispose.

private static void Main(string[] args)

 string directory = @"C:privatetemp";
 string fileName = "MyFile.txt";
 string filePath = Path.Combine(directory, fileName);
 string fileContents = "This will be written to the end of the filern";

 // This will create the directory if it doesn't exist
 Directory.CreateDirectory(directory);

 // This will create the file if it doesn't exist, and then write the text at the end.
 File.AppendAllText(filePath, fileContents);

 File.SetCreationTime(filePath, DateTime.Now);