问题
Is there a way to edit text in a C# console application? In other words, is it possible to place pre-defined text on the command line so that the user can modify the text and then re-submit it to the app?
回答1:
One thing that came to my mind is to...simulate keystrokes. And a simple example using SendKeys:
static void Main(string[] args)
{
Console.Write("Your editable text:");
SendKeys.SendWait("hello"); //hello text will be editable :)
Console.ReadLine();
}
NOTE: This works only on active window.
回答2:
Yes. You need to use method SetCursorPosition of Console. Example:
Console.WriteLine("hello");
Console.SetCursorPosition(4, 0);
Console.WriteLine(" ");
It will display 'hell' You need custom realization of ReadLine method which let you to edit n-symbols (default string) in Console and return string from a user. This is my example:
static string ReadLine(string Default)
{
int pos = Console.CursorLeft;
Console.Write(Default);
ConsoleKeyInfo info;
List<char> chars = new List<char> ();
if (string.IsNullOrEmpty(Default) == false) {
chars.AddRange(Default.ToCharArray());
}
while (true)
{
info = Console.ReadKey(true);
if (info.Key == ConsoleKey.Backspace && Console.CursorLeft > pos)
{
chars.RemoveAt(chars.Count - 1);
Console.CursorLeft -= 1;
Console.Write(' ');
Console.CursorLeft -= 1;
}
else if (info.Key == ConsoleKey.Enter) { Console.Write(Environment.NewLine); break; }
//Here you need create own checking of symbols
else if (char.IsLetterOrDigit(info.KeyChar))
{
Console.Write(info.KeyChar);
chars.Add(info.KeyChar);
}
}
return new string(chars.ToArray ());
}
This method will display string Default. Hope I understood your problem right (I doubt in it)
来源：https://stackoverflow.com/questions/7565415/edit-text-in-c-sharp-console-application