Question

I have created a text file to save the error in that created file. I have a button which, once pressed, generates an error which should be saved to the file. But if I press the button twice, it will overwrite the first error generated, because the contents of the file are overwritten. I want to generate a another separate file to save the new error. A new file should be generated for each new error.

Thanks in advance

Answer 1

private void SaveErrorMessage(string errorMessage)
{
    string errorFile = null;
    for( int x = 0; x < Int32.MaxValue; ++x )
    {
        errorFile = string.Format(CultureInfo.InvariantCulture, "error-{0}.txt", x);
        if( !System.IO.File.Exists(errorFileTest) )
        {
            break;
        }
    }

    File.WriteAllText(errorFile, errorMessage);
}

This will overwrite the last file after you’ve had Int32.MaxValue files, but that’ll take a while.

An alternative (and probably better) approach would be to simply append to the file, rather than creating a new one.

You may also want to consider using a more robust logging solution, such as log4net.