Is there a way to delete a character that has just been written using Console.WriteLine?

“\b” is ASCII backspace. Print it to back up one char.

Console.Write("Abc");
Console.Write("\b");
Console.Write("Def");

outputs “AbDef”;

As pointed out by Contango and Sammi, there are times where overwriting with a space is required:

Console.Write("\b \b");