ile handling problem

[maifs]

i want to fetch the characters from file for example :

1st example:

// mehmood// hello ,how r u?

just within comments and replace it to all caps

2nd example:

/* hi
mehmood
ahmed */


i want to fetch the characters within sigle line comment and multi line comments .

just within comments not outside the comment.

--------------------------------------------------------------------------------

i am trying this code, kindly correct my code:

FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);

StreamReader sr = new StreamReader(fs);
int countComment=0;
while(sr.Peek() >= 0 )
{
str =sr.ReadLine();
strTemp = new char[str.Length];
#region From String method
int count=0;
for (int i = 0; i < str.Length; i++)
{
if (str[i] == '/')
{
++countComment;
count=i;
}
if (char.IsLetterOrDigit(str,count+1) && countComment==2)
{
strTemp2 += str.Substring(count+1).ToUpper();
}

}
#endregion


countComment = 0;
this.textBox2.Text += strTemp2 + Environment.NewLine; ;
this.textBox1.Text += str + Environment.NewLine;
}
sr.Close();
fs.Close();



it generates an exception :

System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: index

[BigEd781]

I would suggest learning how to use regular expressions. Short of that, your code is hard to read as you are not wrapping it in [ code][ /code] blocks and you haven't told us what the actual problem is (just, "fix my code").

[maifs]

 FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
           
            StreamReader sr = new StreamReader(fs);
            int countComment=0,countMulti=0;
            while(sr.Peek() >= 0 )
            {
                str =sr.ReadLine();
              
                #region From String method
                int count=0;
                for (int i = 0; i < str.Length; i++)
                {
                    if (str[i] == '/')
                    {
                        ++countComment;          
                        count=i;
                        if (str[i] =='*')
	                    {
		                     ++countMulti;
	                    }                    	                      
                        if (countComment == 2)
                        {
                            strTemp2 += str.Substring(count + 1).ToUpper();
                            break;
                        }
                        if (countComment == 1 && countMulti == 1)
                        {
                            strTemp2 += str.Substring(count + 1).ToUpper();
                            break;
                        }
                    }
                                  
                    
                }
                #endregion
                countComment = 0;
                this.textBox2.Text = strTemp2 + Environment.NewLine; ;
                this.textBox1.Text += str + Environment.NewLine;
            }
            sr.Close();
            fs.Close()

------------------------------------------------------------------------
input file :
---------------------------------------------
// mehmood// hello ,how r u?
/* hi
mehmood
ahmed */

i want take output as:
MEHMOOD//HELLO,HOW R U?
HI MEHMOOD AHMED

I did first line .