Here are the basic ways of writing text to a file. Each of these will create a new file, or overwrite if the file already exists. Each are useful in different situations.
All three of these have an equivalent Async
version as well.
/// <summary> /// When you have a single string: /// </summary> void SingleString() { const string FILE_CONTENTS = "This is my file"; File.WriteAllText(FULL_FILE_NAME, FILE_CONTENTS); } /// <summary> /// When you have a collection of lines: /// </summary> void Lines() { string[] fileLines = { "Line 1", "Line 2", "Line 3" }; File.WriteAllLines(FULL_FILE_NAME, fileLines); } /// <summary> /// When you're looping through a collection and want to write once per item: /// </summary> void LinesFromLoop() { using StreamWriter writer = File.CreateText(FULL_FILE_NAME); foreach (Foo foo in GetFoos()) { writer.WriteLine(foo.Name); } }