Streamwriter，删除找到特定字符的整行

Question

Maybe I'm overthinking this. I've got a working method for writing to a text file, and reading from it.

Writing:

public void SaveNotes()
{
    using (StreamWriter save= new StreamWriter("notes.txt", true))
    {               
        foreach (var element in collection)
        {
            spara.Write(element.Prio+ " " + element.Note+ "\n");
        }
    }
}

Now I'm trying to design a method that looks for any '0' in my list, and overwrite the entire line.

Is there any easier way to tell the program that all lines containing a '0' should be overwritten with blankspaces? Any input much appreciated.

public static void Delete(Note note)
{         
    using (StreamWriter remove = new StreamWriter("notes.txt"))
    {
        Regex rgx = new Regex("");
        foreach (var element in collection)
        {       
            while (element.Notering.Contains("0"))
            {
                rgx.Replace(element.Note, "");   
                rgx.Replace(element.Prio, "");
            }
        }
    }
}

Answer 1

Why don't you combine two of them?

public void SaveNotes()
{
    using (StreamWriter save= new StreamWriter("notes.txt", true))
    {               
        foreach (var element in collection)
        {
            if (element.Prio.IndexOf('\0') < 0 && element.Note.IndexOf('\0') < 0)
                spara.Write(element.Prio+ " " + element.Note+ "\n");
            else spara.Write(" \n");
        }
    }
}