notepad

[siddhanta]

hi,
in my notepad i have 2 rows of data seperated by spacebar. value of first row should be saved in one variable and the other in another variable. so, how to differentiate between this values as they are in the same line.
any suggestion plz....

[tlhintoq]

use string.split to split the line into to elements of a string array - using the space as the divider character

[siddhanta]

hi,
how to take a value from notepad and save it in any variable.

[tlhintoq]

From the notepad.exe or from a text file on the hard drive?

[siddhanta]

i have a .dat file where the values are save. i want to store this values one by one in variables.

[tlhintoq]

MSDN on how to read a text file:
http://msdn.microsoft.com/en-us/libr...0d.aspx?ppud=4

[siddhanta]

hi,
i used the following code but getting problem with it.
wat i wanna do is to store a line from notepad having two float values seperated by Space.
private void button1_Click(object sender, EventArgs e)
{
StreamReader sw = new StreamReader("c: \\key.txt");
line = sw.ReadLine();
Console.WriteLine(line);//its showing the output
string[] variables = line.Split(' ');
float fvalue = float.Parse(variables[0]);//this line is showing error while runnig.
can u help plz..

[tlhintoq]

string[] variables = line.Split(' '); 
float fvalue = float.Parse(variables[0]);//this line is showing error 
 

What is the actual error?

A. This assumes that the split returned something. If the split failed to find a space then 'variables' never gets values and remains null.
B. This assumes that the first element of the array can be made into a float. Again, could return an error or at least unexpected results.

[siddhanta]

hi,
to read from a notepad i hv used the following code.
bt the problem is, it will not read the next line.
so how to read line by line.....

using (StreamReader sr = new StreamReader("c: \\key.txt"))
{
 
  string s = sr.ReadLine();
  //etc.
  Console.WriteLine(s);//its showing the output
 
  string[] variables = s.Split(' ');
  float fvalue = float.Parse(variables[0]);
  Console.WriteLine(fvalue);
}

[Markus]

See the examples at the MSDN docs page for this method.

You need to iterate over the file.

Mark.

[siddhanta]

hi,
to seperate two integers in a line seperated by space i used the following function:
string[] variables = s.Split(' ');
but the problem is integers are seperated by more than one space, where the above functiion gives error. Also i cant use more than one space in split.
so, can u help plzz.....

[tlhintoq]

Once you have the string[], trim the leading spaces..

MyArray[0] = MyArray[0].TrimStart();

[Curtis Rutland]

string input = "1   2";  //notice that there are three spaces between the two ints
string[] delims = { " " };  //note that that's a single space
string[] tokens = input.Split(delims, StringSplitOptions.RemoveEmptyEntries);

tokens will now hold 2 strings, with values of "1" and "2". The "StringSplitOptions.RemoveEmptyEntries" part discards empty tokens.

[Curtis Rutland]

I like to use sr.ReadToEnd() if it's a relatively short text file. It will read the entire file into one string variable. If you want it broken into a string[] separated by newlines, you can .Split on the Environment.NewLine value.