CODEWITHSUNDEEP
c#stringconsole
Scott
Scott

Reputation: 1922

How to work out length of a formatted string

I'm wanting to display a message on the console window, as long as the message won't exceed the default 0-79 X width of the window.The code I have looks like:

int xRemaining = 80 - mRobot.CurrentPos.X;
string message = "ID{0:d} Facing {1:s} at ({2:d},{3:d}) home is({4:d},{5:d})";
string formatMessage = string.Format(message,mRobot.ID,mRobot.getDir.ToString()/*...*/;

if(mRobot.CurrentPos.Y < 24)
{
  if (xRemaining < formatMessage.Length)
    {
     Console.SetCursorPosition((mRobot.CurrentPos.X - xRemaining), mRobot.CurrentPos.Y+1); 
    }
  else
    {
     Console.SetCursorPosition(mRobot.CurrentPos.X, mRobot.CurrentPos.Y + 1);
    }
}

else
{
  if(xRemaining < formatMessage.Length)
  {
   Console.SetCursorPosition((mRobot.CurrentPos.X-xRemaining), mRobot.CurrentPos.Y-1);
  }
  else
   {
    Console.SetCursorPosition(mRobot.CurrentPos.X, mRobot.CurrentPos.Y-1);
   }
}
Console.Write(message,,mRobot.ID, mRobot.getDir.ToString(), mRobot.CurrentPos.X, mRobot.CurrentPos.Y,mRobot.Home.X,mRobot.Home.Y);

Edit: Used string.Format, still seems to be running onto the next line though :/

Upvotes: 0

Views: 138

Answers (2)

ChrisF
ChrisF

Reputation: 137108

You need to format the string before getting it's length. You are currently getting the length of the unformatted string. To do that you need to use the string.Format command:

string output = string.Format(message, .....);

....

if (xRemaining < output.Length)
{
    ....
}

....

Console.Write(output);

Upvotes: 0

Zbigniew
Zbigniew

Reputation: 27584

You can format message with string.Format method:

string message = "ID{0:d} Facing {1:s} at ({2:d,3:d}) home is({4:d,5:d})";
string formattedMessage = string.Format(message, mRobot.ID, mRobot.getDir.ToString(), /* ... */);
int msgLength = formattedMessage.Length;

Later on, you can just display it with:

Console.WriteLine(formattedMessage);

Upvotes: 1

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