How To Create A Fixed Length String In C# Mono

[iccaros]

ok I need to create a fixed length string that is 31 char and a null

this is what I am trying

StringBuilder sb = new StringBuilder(name,31);

this.Name = sb.ToString();

Ideals or suiggestions..

how is this done in c++

[jcl]

ok I need to create a fixed length string that is 31 char and a null

How easily do you need the access the trailing null? If it's just for interop, I believe .NET strings are internally null-terminated so they can be passed to unmanaged code without marshalling.

StringBuilder sb = new StringBuilder(name,31);

this.Name = sb.ToString();

No idea if that's guaranteed to work. You probably have to set the StringBuilder's Capacity if you really 31 characters -- the ctor argument is a 'suggestion' -- but I'm not sure that's guaranteed to work, and I don't think there's any guarantee that the length of the string returned by ToString() will be the same as the StringBuilder's Capacity.

how is this done in c++

char s[32] = "foo"

Edited June 22, 2007 by jcl

[iccaros]

thanks,

stringbuild does infact shorten the string to the actual length when the ToString() method is used..

I did it this way

string FixedLength(string value)
{
  if (string.lenght > 31)
  {
	 string = string.substring(0,31);
	 string += "\zero";
  }
  else
  (
	 string = value;
	 string +=  value.PadRight(31) + "\zero";
  }

  return string
}

EDIt:

Replace the word zero with the number 0, the BB keeps removing my 0 ..

Edited June 23, 2007 by iccaros