Error in reading file

[vjshankwar]

Hi all,

I have made a .txt file in a format that it contains data per line i.e. in the format

/*text1*/
/*text2abc*/

And its not defined that how much data it can contain per line.

I am reading this file in a per line format basis using this code

CStdioFile ptr;
CString str;
int i = 0;
ptr.Open(file_name, CFile::ReadWrite, NULL);
while(ptr.ReadString(str))
{   
m_List.InsertItem(i,str);
   i++;
}
ptr.Close();

My problem is if a list contains more data(5000 lines or above) its taking a lot of time to read it.

I also know that i can read particular number of bytes from buffer but the problem is how can i know that the line has been completely read or not.

Can anybody please help me in this?
Is there any other way to read thid file.

Thanks in advance

[cilu]

Is it taking long if the list contains too many elements, or if the file has too many lines?

[vjshankwar]

supoose if the file is having 30,000 lines i will read a single line and then add it in list control and every time i read that file it is taking considerate amount of time to read and populate the list.

[cilu]

30,000 lines in a list control? You didn't say "list control", you said only "list". It's a different thing. In this case the proper solution is a virtual list.
http://msdn.microsoft.com/en-us/library/ye4z8x58.aspx
http://www.codeguru.com/cpp/controls...icle.php/c4151

You can find lots of other references too.

[Skizmo]

supoose if the file is having 30,000 lines i will read a single line and then add it in list control and every time i read that file it is taking considerate amount of time to read and populate the list.

reading 30000 lines from disk doesn't take that long, inserting them in a listcontrol does.