Appending a New line at specified location in a Text file

[srinivasc_it]

Hi
I have a “Make File” (.mak). Please see below partial “make file” below:-
# The nmake reference can be found here:
# http://msdn2.microsoft.com/en-us/lib...ha(VS.80).aspx

.SILENT:

LRBSDKDIR=$(LRB_ABS_PATH)
!INCLUDE <$(LRB_ABS_PATH)\lrb.mak>
*****End of Make File*********

I am trying to append a new line into to this “make file” at specific location, just after the line “.SILENT:”
And before line starting with “LRBSDKDIR=$(LRB_ABS_PATH)”. But not able to append at that place.

Please see the code below:-

string fileName = @"c:\srini1981\rt_aa\lrb.mak";
using (StreamWriter sw2 = new StreamWriter(fileName,true))
{
sw2.Write("LRB_ABS_PATH=C:\\perforce\\AVC\\mainline\\AVCSDK");

}

The above code appends the New line at the End of the make file, which is not I want. So how can I make it to append in-between those two lines specified above. Also there is lot of space between those two line, were in
I want to append this new line

Thanks in advance,

[Hack]

Could you read the file into a textbox, remove the blank lines, add your line, and write it back out again? Would that work?

[jwiese]

Here is a sample console application that will accomplish this for you. You could get fancier and have it simply replace the existing file by opening the file and editing it in place if you want too.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            StreamWriter sw = new StreamWriter("NewFile.txt");

            using(StreamReader sr = new StreamReader("textfile1.txt",Encoding.ASCII))
            {
                string line;
                while (!sr.EndOfStream)
                {
                    line = sr.ReadLine();
                    sw.WriteLine(line);
                    if (line.StartsWith("B"))
                    {
                        sw.WriteLine("\n\r");
                    }                    
                }
            }
            sw.Close();
        }
    }
}

Here is what TextFile1.txt looks like:

A
B
C
D
E
F
G
H
I
J
K
L
M