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I want to write a string into a binary file.
The length of the string is 22
position 1036
Write name in that chain, the length of the name varies but is always between a length of 22.
As I can fill the remaining length of the string with blank spaces?
The empty spaces in hex is "00"
Thanks in advance.
No absolutely sure about this, but I think you'll find that '00' is effectively a nul or chr$(0) and VB will treat that as end of string - I may be wrong
Pad out with spaces chr$(32) is my best advice
I do not think I explained well
Dim s as string
TextBox1.MaxLength = 22
Textbox1.text = "ANTONIO" 'length 7
s = textbox1.text & "00000000000000"
The problem is that the name may vary in size
How to determine the number of "0" to add?
At a quick guess:
Code:s = textbox1.Text & new String("0", Math.Max(0, 22 - textbox1.Text.Length))
Code:'test data
TextBox1.Text = "Dewayne"
Dim s As String = TextBox1.Text.PadRight(22, "0"c)
Debug.WriteLine(s)
Debug.WriteLine(s.Length)
Thank you friends.
Oo good find db, I have not used that method myself.
Ummmm.... I could be wrong about this but.... won't "0"c give you 0? Which isn't the same as the hex value of 0. "0"c will give you the CHARACTER "0" ... which is hex 2F...
-tg
I wasn't sure what the fill character was supposed to be either.Quote:
Originally Posted by techgnome
Ok, I was jsut checking... thought maybe you knew something I didn't... according to the OP, "The empty spaces in hex is "00"" ... which means it's null padded... which is always a joy in VB... :P
-tg